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WO1999056346A1 - Antenne a fentes - Google Patents

Antenne a fentes Download PDF

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Publication number
WO1999056346A1
WO1999056346A1 PCT/JP1998/001933 JP9801933W WO9956346A1 WO 1999056346 A1 WO1999056346 A1 WO 1999056346A1 JP 9801933 W JP9801933 W JP 9801933W WO 9956346 A1 WO9956346 A1 WO 9956346A1
Authority
WO
WIPO (PCT)
Prior art keywords
slot
frequency
short
array antenna
resonates
Prior art date
Application number
PCT/JP1998/001933
Other languages
English (en)
Japanese (ja)
Inventor
Masahito Sato
Yoshihiko Konishi
Moriyasu Miyazaki
Hideyuki Oh-Hashi
Shuji Urasaki
Original Assignee
Mitsubishi Denki Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Denki Kabushiki Kaisha filed Critical Mitsubishi Denki Kabushiki Kaisha
Priority to PCT/JP1998/001933 priority Critical patent/WO1999056346A1/fr
Publication of WO1999056346A1 publication Critical patent/WO1999056346A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/0006—Particular feeding systems
    • H01Q21/0031—Parallel-plate fed arrays; Lens-fed arrays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061—Two dimensional planar arrays
    • H01Q21/064—Two dimensional planar arrays using horn or slot aerials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
    • H01Q5/42—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements using two or more imbricated arrays

Definitions

  • the present invention relates to a slot array antenna in which antennas operating at different frequencies are shared by one antenna aperture.
  • FIG. 11 is a diagram showing an example of the configuration of a conventional slot array antenna. This is an example shown in Japanese Patent Application Laid-Open No. 63-218104.
  • 1 is a conductor plate
  • 5 is a slot element resonating at the first frequency formed on the conductor plate 1
  • 6 is formed on the conductor plate 1 in an angular relationship orthogonal to the slot element 5.
  • the slot elements resonating at the second frequency thus formed, 28 and 29 are dielectrics formed above and below the conductor plate 1, respectively, and 30 is the first slot element 5 formed on the dielectric 28.
  • Slot elements 5 and 6 having different resonance frequencies are arranged orthogonally on an intermediate conductor plate 1, and the slot element 5 that resonates at the first frequency is excited by a microstrip line 30.
  • the slot element 6 which resonates at the second frequency is re-excited by the microstrip line 31. Therefore, the microstrip lines 30 and 31 corresponding to the first frequency and the second frequency are divided into the front and back sides of the conductor plate 1, so that there is almost no electrical coupling and different Acts as a slot array antenna that radiates radio waves with polarizations orthogonal to the resonance frequency.
  • this slot array antenna is used as one sub-array.
  • the array antennas are arranged to form a larger array antenna, there is a problem that the slot element cannot be arranged in the space to the distribution circuit portion of each subarray, and the radiation characteristics of the array antenna deteriorate.
  • the present invention has been made to solve the above-described problems of the conventional slot antenna, and it has been proposed that the excitation to two types of slot elements having different resonance frequencies be reduced in thickness and to provide a small feed loss.
  • the purpose is to obtain a dual-frequency slot array antenna using a waveguide.
  • the slot array antenna according to the present invention is composed of two parallel first and second conductor plates, and an end substantially opposite to the first conductor plate is attached to the second conductor plate. Each of the short surfaces is short-circuited to form a short surface, and the wide wall surface is substantially parallel to the short surface on the second conductor plate and substantially in the middle of the opposing short surface.
  • the slot array antenna of the present invention is arranged such that at least one or more slot elements that generally resonate at a lower frequency of the first frequency or the second frequency are rotated around the center thereof as a rotation axis, It is characterized in that the radiation impedance of the slot element is controlled. Further, the slot array antenna of the present invention is configured such that at least one or more slot elements that resonate at a lower frequency of the first frequency or the second frequency are formed as cross-shaped slot elements. The present invention is characterized in that the radiation impedance of the above-mentioned slit element is controlled and the cross polarization component is suppressed.
  • the slot array antenna of the present invention includes the above-described slot elements such that the directions of the electric fields of the slot element that substantially resonates at the first frequency and the slot element that resonates substantially at the second frequency are substantially orthogonal to each other. Rotate its center It is characterized by being arranged to rotate as an axis.
  • the end face of the connection portion is formed on the second conductor plate and substantially in the center of the opposing short face so that the short face and the wide wall face are substantially parallel to each other.
  • a power supply oversized waveguide having a short surface at a frequency and a power oversize waveguide serving as a short surface at a second frequency are connected substantially adjacent to each other. is there.
  • the slot array antenna of the present invention has a slot element that resonates substantially at the first frequency and a slot element that resonates generally at the second frequency. From the other short surface, the slots are arranged at an interval of approximately one wavelength based on the position of approximately a half wavelength to form a slot row, and the arrangement of the slot elements that generally resonate at the first frequency described above.
  • a power supply oversize having means for making the end face of the connection portion a short surface at the first frequency so that the short surface and the wide wall surface are substantially parallel to each other on the second conductor plate near the reference short surface.
  • the short surface and the wide wall surface are almost on the second conductor plate near the short surface, which is the reference for the arrangement of the slot elements that generally resonate at the second frequency.
  • Connecting end face so that the line is characterized in that to connect the power supply oversized waveguide having a means comprising a short face at the second frequency.
  • the slot array antenna of the present invention includes both a slot element that generally resonates at the first frequency and a slot element that resonates generally at the second frequency, and the short element of one of the opposing short surfaces. Only one half-wavelength position is used as a reference to form a slot array with an interval of approximately one wavelength, and an oversized waveguide for power supply is connected to a short surface that serves as a reference for the arrangement of the slot elements. Above near the other opposing short plane The short surface and the wide wall surface of the oversize waveguide for power supply are connected so as to be substantially parallel to each other.
  • the slot array antenna of the present invention includes the above-described slot antenna on a first conductor plate on which a slot element that generally resonates at a first frequency and a slot element that resonates substantially at a second frequency are formed. And a polarizer having means for converting linearly polarized light radiated from the G element into circularly polarized light.
  • N is an integer of 2 or more
  • N slots are arranged in a straight line or an arbitrary plane as one sub-array. It is characterized in that a feeder circuit comprising at least one of the distribution circuit and at least one of the combining circuits or both is connected.
  • FIG. 1 is a configuration diagram of a slot antenna according to a first embodiment of the present invention.
  • FIG. 3 is a configuration diagram of a slot array antenna according to a third embodiment of the present invention.
  • FIG. 4 is a configuration diagram of a slot array antenna according to a fourth embodiment of the present invention.
  • FIG. 5 is a configuration diagram of a slot array antenna according to a fifth embodiment of the present invention.
  • FIG. 6 is a configuration diagram of a slot array antenna according to a sixth embodiment of the present invention.
  • FIG. 7 is a configuration diagram of a slot array antenna according to a seventh embodiment of the present invention.
  • FIG. 8 is a configuration diagram of a slot array antenna according to an eighth embodiment of the present invention.
  • FIG. 9 is a configuration diagram of a slot array antenna according to the ninth embodiment of the present invention.
  • FIG. 10 is a block diagram of a slot array antenna according to Embodiment 9 of the present invention.
  • FIG. 11 is a configuration diagram showing an example of a conventional slot array antenna. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIG. 1 is a configuration diagram of a slot array antenna according to an embodiment of the present invention, wherein (a) and (b) show the appearance and cross section, respectively.
  • Fig. 1 and 2 are conductor plates parallel to each other
  • 3 is a dielectric inserted between conductor plate 1 and conductor plate 2
  • 4 is a short-circuit between conductor plate 1 and the generally opposite end of conductor plate 2.
  • 5 and 6 are slot elements formed on the conductor plate 1 that resonate at frequencies f1 and f2, respectively.
  • 7 is approximately the middle of the opposing short surface 4 on the conductor plate 2.
  • the oversized waveguide for power supply connected so that the short surface 4 and the wide wall surface are almost parallel to each other
  • 8 is connected to the oversized waveguide 7 for power supply and separates the frequency f1 from the frequency f2
  • the diplexers 9 and 10 are feed ports connected to the diplexer 8 for the frequency f1 and the frequency f2, respectively.
  • the slot element 5, which generally resonates at f1 is connected to the oversize waveguide 7 for power supply sequentially from the two short planes 4 parallel to the Y-axis, each with a position at about a half wavelength ( ⁇ 1 ⁇ 2). Since these parts are arranged at approximately one wavelength interval ( ⁇ 1), these slot elements 5 operate as a center-fed resonant planar slot array at the frequency f 1.
  • the slot element 6, which generally resonates at the frequency f2 also sequentially feeds the oversized waveguides 7 from the two short planes 4 parallel to the Y-axis with reference to the position of approximately a half wavelength ( ⁇ 2 2 2).
  • these slot elements 6 Since these are arranged at approximately one wavelength interval ( ⁇ 2) up to the point where they are connected, these slot elements 6 operate as a center-fed resonant planar slot array at frequency f 2. Excitation to the slot elements 5 and 6 is performed by sharing a parallel plate waveguide composed of the conductor plate 1 and the conductor plate 2 sandwiching the dielectric 3. For this reason, the slot element 5 which resonates substantially at the frequency f1 does not look like a short at the frequency f2 and has some resistance and reactance in the impedance.However, since the values are very small, the resonance element 5 generally resonates at the frequency f2. The effect on the excitation distribution formed by slot 6 is small. The same applies to the case of the reverse frequency relationship.
  • both the slot elements 5 and 6 are arranged so that their electric field directions are in the X-axis direction orthogonal to the short plane 4, each of the slot elements 5 and 6 has the same linear polarization. Radiate. Therefore, the excitation to the two types of slot elements 5 and 6 having different resonance frequencies is performed by a thin, parallel plate waveguide with small power loss, and the two frequencies that emit the same linear polarization at different frequencies are used. Acts as a slot array antenna.
  • the slot array antenna according to the present embodiment does not require a distribution circuit according to the frequency, and the two types of slot elements 5 and 6 having different resonance frequencies arranged on the same aperture are combined into one. It can be excited by a parallel plate waveguide.
  • the excitation to the slot elements 5 and 6 is performed by a parallel plate waveguide, power can be supplied with a lower loss than when a microstrip line or the like is used. Therefore, the effect of realizing a slot array antenna that is thin, has low loss, and can radiate the same linearly polarized wave at different frequencies can be realized.
  • FIG. 2 is a configuration diagram showing a slot array antenna according to Embodiment 2 of the present invention.
  • the second embodiment has a configuration in which the slot element having the lower resonance frequency in the first embodiment shown in FIG. 1 is rotated around its center as a rotation axis and arranged as a slot element 6a. It is.
  • the sectional configuration of the slot antenna in the second embodiment is the same as that in FIG. 1 (b).
  • the slot array antenna of this embodiment two types of slot elements 5 and 6a having different resonance frequencies disposed on the same aperture are formed by one parallel plate waveguide. Since excitation is performed, the power supply circuit for each slot element 5, 6a can be shared, and power can be supplied with lower loss than when using a microstrip line or the like. Furthermore, since the slot element 6a having the lower resonance frequency is rotated around its center as the rotation axis, the radiation impedance of the slot element 6a can be set to an arbitrarily small value depending on the rotation angle.
  • the normalized input impedance (the value normalized by the characteristic impedance of the parallel-plate waveguide) as viewed from the oversized waveguide 7 for feeding at the short-circuited surface 4 at both ends is obtained for both the frequency f1 and the frequency f2.
  • the reflection characteristic at the lower frequency f2 of the mouth array antenna can be improved. Therefore, rotation of the slot element 6a generates cross polarization components (components in the Y-axis direction), but it emits the same linear polarization at different frequencies and has good reflection characteristics. This has the effect of realizing a slot array antenna that can be shared by two frequencies.
  • all slot elements 6a are rotated about their respective centers as rotation axes, but at least one or more of the many
  • the slot element 6a may be rotated by an arbitrary angle around the center of the slot element as a rotation axis. Further, the rotation angle of each slot element 6a may be set to a different arbitrary rotation angle.
  • FIG. 3 is a configuration diagram showing a slot array antenna according to Embodiment 3 of the present invention.
  • the slot element 6 having the lower resonance frequency in the first embodiment shown in FIG. 1 or the second embodiment shown in FIG. This is the device 6b.
  • the sectional configuration of the slot array antenna according to the third embodiment is the same as that in FIG. 1 (b).
  • the slot array antenna of this embodiment two types of slot elements 5 and 6b having different resonance frequencies arranged on the same aperture are excited by one parallel plate waveguide.
  • the power supply circuit for the elements 5 and 6b can be shared, and power can be supplied with lower loss than when using a microstrip line or the like.
  • the radiation impedance of the wrist slot element 6b is adjusted by adjusting the opening angle. Can be set to any small value.
  • the input impedance value normalized by the characteristic impedance of the parallel flat waveguide
  • the reflection characteristic at the lower frequency f2 of the slot array antenna of the first embodiment shown in FIG. 1 can be improved.
  • the cross-shaped slot element 6b since the cross-shaped slot element 6b is used, the cross-polarization component (Y-axis direction component) which is a problem in the slot array antenna according to the second embodiment shown in FIG. 2 can be canceled. Therefore, a slot array antenna that radiates the same linear polarization at different frequencies, has good reflection characteristics, has good cross-polarization characteristics, is thin and has low loss, and is a dual-frequency dual-frequency antenna can be realized. The effect is obtained.
  • all the slot elements 6 are formed as cross-shaped slot elements 6b. At least one or more arbitrary slot elements 6 are formed as cross-shaped slot elements.
  • the element 6b may be used. Further, the opening angles of the cross-shaped slot elements 6b may be set to arbitrary different opening angles.
  • the slot array antenna of this embodiment two types of slot elements 5c and 6c having different resonance frequencies arranged on the same aperture are excited by one parallel plate waveguide. It is possible to share feeding electric circuit for the element 5 c, 6 C, when due to a microstrip line Power can be supplied with lower loss. Further, since the slot element 5c and the slot element 6c are arranged so that their electric field directions are substantially orthogonal to each other, linearly polarized waves orthogonal to each other can be radiated. In addition, the normalized input impedance (the value normalized by the characteristic impedance of the parallel plate waveguide) when the short-circuited surface 4 on both ends is viewed from the oversize waveguide 7 for power supply is applied to both the frequency f1 and the frequency f2.
  • all the slot elements 5, 6 are slot elements 5c, 6c inclined with respect to the short surface 4, but the slot elements that are not inclined 5 or 6 is fine.
  • FIG. 5 is a configuration diagram showing a slot array antenna according to a fifth embodiment of the present invention, where (a) and (b) show the appearance and cross section, respectively.
  • the fifth embodiment is different from the first embodiment shown in FIG. 1 to the fourth embodiment shown in FIG. 4 in that the oversize waveguide 7 and the diplexer 8 for feeding are replaced on the conductor plate 2 and A power supply over filter provided with a filter 13 so that the end face of the connection part operates as a short at frequency f2 so that the short face 4 and the wide wall are almost parallel to the middle part of the opposing short face 4
  • the configuration is such that the size waveguide 11 and the power supply oversize waveguide 12 provided with the filter 14 so as to operate as a short circuit at the frequency f1 are connected substantially adjacent to each other.
  • the slot antenna of this embodiment two types of slot elements having different resonance frequencies arranged on the same aperture are used. Since the elements 5 and 6 are excited by one parallel-plate waveguide, the power supply circuit for each slot element 5 and 6 can be shared, and power can be supplied with lower loss than when using a microstrip line or the like. Further, when operating at the frequency f1, the connection between the oversized waveguide for power supply 12 and the conductor plate 2 functions as a short by the filter 14, and when operating at the frequency f2, the filter 13 As a result, the connection between the feeding oversized waveguide 11 and the conductor plate 2 acts as a short circuit, so that the slotted antenna of the first embodiment shown in FIG. 1 to the fourth embodiment shown in FIG. Compared to the connection between the power-over waveguide 7 and the conductor plate 2, the connection between the power-over waveguides 11 and 12 and the conductor plate 2 is only in each band. It is sufficient to operate, and the effect that the configuration becomes easy can be obtained.
  • FIG. 6 is a configuration diagram showing a slot antenna according to a sixth embodiment of the present invention.
  • one of the short surfaces 4 facing the slot element 5 that generally resonates at the frequency f1 and the slot element 6 that resonates generally at the frequency f2 are opposed.
  • From the other short surface 4 to form a slot array by arranging them at intervals of approximately one wavelength ( ⁇ 1 and ⁇ 2) based on the positions of approximately half wavelengths ( ⁇ 1 ⁇ 2 and ⁇ 2 ⁇ 2). I have to do it.
  • connection portion has a frequency f1 such that the short face 4 and the wide wall face are substantially parallel to each other on the conductor plate 2 near the short face 4 serving as a reference for the arrangement of the slot elements 5 that generally resonate at the frequency f1.
  • each slot element 5 And 6 can be shared, and power can be supplied with lower loss than when using a microstrip line or the like.
  • the connection between the oversized waveguide for power supply 12a and the conductive plate 2 acts as a short by the filter 14, and when operating at the frequency f2, the filter Since the connection between the oversized waveguide for power supply 11a and the conductor plate 2 acts as a short circuit according to 13, the slot in the embodiment 1 shown in Fig. 1 to the embodiment 4 shown in Fig.
  • connection between the feeding oversized waveguide 7 and the conductor plate 2 of the array antenna Compared to the connection between the feeding oversized waveguide 7 and the conductor plate 2 of the array antenna, the connection between each feeding oversized waveguide 11 and 12 and the conductor plate 2 operates only in each band. This has the effect of simplifying the configuration. Also, as compared with the case of the slot array antenna according to the fifth embodiment shown in FIG. 5, the oversized waveguides 11a and 12a for feeding can be arranged separately, so that they are shown in the figure. However, there is also an effect that connection of the subsequent circuit components to the power supply ports 9 and 10 becomes easy.
  • FIG. 7 is a configuration diagram showing a slot antenna according to a seventh embodiment of the present invention.
  • both the slot element 5 that generally resonates at the frequency f1 and the slot element 6 that resonates generally at the frequency f2 are connected to only one of the short faces 4 of the opposing short faces 4.
  • the short surface 4 and the wide wall surface are almost parallel on the conductor plate 2 near the other short surface 4 opposite to the short surface 4 which is the reference of the arrangement of 6.
  • the configuration is such that the power supply oversized waveguide 7a is connected so that
  • slot antenna of this embodiment two types of slot elements 5, 6 arranged at the same aperture and having different resonance frequencies are excited by one parallel plate waveguide. And 6 can be shared, and power can be supplied with lower loss than when using a microstrip line or the like. Furthermore, since the oversize waveguide 7a for power supply and the diplexer 8 are configured on one short surface 4, the slot elements 5 and 6 that generally resonate at each frequency are all approximately one wavelength ( ⁇ 1 and The effect of arranging them at equal intervals at an interval of ⁇ 2) is obtained.
  • FIG. 8 is a configuration diagram showing a slot array antenna according to an eighth embodiment of the present invention.
  • each of the above-described slot elements 5, 6 is formed on a conductor plate 1 on which a slot element 5 that resonates substantially at frequency f1 and a slot element 6 that resonates substantially at frequency f2 are formed.
  • a polarizer 15 having means for converting a linearly polarized wave radiated from the optical disk into a circularly polarized wave.
  • the slot array antenna of this embodiment two types of slot elements 5 and 6 arranged at the same aperture and having different resonance frequencies are excited by one parallel plate waveguide. And 6 can be shared, and power can be supplied with lower loss than when using a microstrip line or the like. Furthermore, a volatilizer 15 (for example, a meander volatilizer) for converting the linearly polarized light radiated from each of the slot elements 5 and 6 into a circularly polarized wave is provided on the conductor plate 1 via a spacer 16. Circularly polarized waves can be radiated together at different frequencies. Therefore, the effect of realizing a thin, low-loss, dual-frequency slot array antenna that radiates circularly polarized waves co-rotating at different frequencies can be realized.
  • a volatilizer 15 for example, a meander volatilizer
  • slot element 5 and slot element 6 are both arranged so that their electric field directions are in the X-axis direction perpendicular to short plane 4.
  • the slot element 5 and the slot element 6 may be arranged so that their electric field directions are substantially orthogonal to each other, and may radiate circularly polarized waves having opposite frequencies at different frequencies.
  • FIG. 9 is a configuration diagram illustrating a slot array antenna according to a ninth embodiment of the present invention
  • FIG. 10 is a block diagram of the slot array antenna according to the ninth embodiment.
  • a total of 16 (4 ⁇ 4) arrays are arranged from the first embodiment shown in FIG. 1 to the slot array antenna according to the eighth embodiment shown in FIG. 8 as one sub-array.
  • This is a planar slot array antenna.
  • SSPA 22 and LNA 23 are connected to the feed port 9 for frequency f 1 and the feed port 10 for frequency f 2 of each sub-array via BPF 20 and 21 respectively. Are connected to a distribution circuit 24 and a synthesis circuit 25, respectively.
  • slot array antenna of this embodiment two types of slot elements 5, 6 arranged at the same aperture and having different resonance frequencies are excited by one parallel plate waveguide. And 6 can be shared, and power can be supplied with lower loss than when using a microstrip line or the like.
  • this thin, low-loss, dual-frequency slot array antenna is used as one sub-array, and a total of 16 4 ⁇ 4 antennas are arranged to form a planar slot array antenna. The effect of realizing a thin and low-loss slot array antenna having a narrow beam and a narrow beam is obtained.
  • a total of 16 4 ⁇ 4 antennas are used as one slot array antenna.
  • they may be constituted by arranging N (N is an integer of 2 or more) linearly or in an arbitrary plane.
  • one distribution circuit 24 and one combining circuit 25 are connected, but the distribution circuit 24 or the combining circuit is connected to a plurality of sub-arrays. After the connection of the circuit 25, the distribution circuit 24 or the combining circuit 25 may be further connected.
  • band-pass filters (BPF) 20 and 21, solid-state power amplifier (SSPA) 22 and low-noise amplifier (LNA) 23 are connected. Alternatively, some or all of these may not be connected.
  • frequency f1 is used as the transmission frequency and frequency f2 is used as the reception frequency, but both may be configured as different transmission frequencies or reception frequencies. good. Possible use for cereal II
  • the present invention Since the present invention has the configuration described above, it has the following effects.
  • two types of slot elements having different resonance frequencies are provided on one conductor plate of a parallel plate waveguide composed of two parallel conductor plates, each of which has an electric field direction corresponding to the short plane.
  • a thin, low-loss, dual-frequency slot array antenna that can radiate the same linearly polarized wave at different frequencies is realized because it is arranged orthogonally and excited by a common parallel plate waveguide. The effect that can be obtained is obtained.
  • the radiation impedance of the slot element can be set to an arbitrarily small value depending on the rotation angle.
  • the normalized input impedance value normalized by the characteristic impedance of the parallel-plate waveguide
  • the effect of improving the reflection characteristics at the lower frequency can be obtained.
  • the radiation impedance of the re-slot element is adjusted by adjusting the opening angle of the cross portion.
  • the slot elements having different resonance frequencies are arranged so that their electric field directions are substantially orthogonal to each other, it is possible to obtain an effect of radiating linearly polarized waves orthogonal to each other.
  • the normalized input impedance (the value normalized by the characteristic impedance of the parallel plate waveguide) when viewing the short-circuit side of both ends from the oversized waveguide for feeding can be set to approximately 2 at both frequencies. The effect of realizing good reflection characteristics can be obtained.
  • the oversize waveguides for the power supply for the frequency f2 and the power supply for the frequency f1 which act as short-circuits at the frequencies (f1 and f2) at which the connection portion with the conductor plate is opposed by the filter are provided. Therefore, the connection between each oversized waveguide for power supply and the conductor plate only needs to operate in each band, and the operating band can be narrowed and the configuration is easy compared to the case where two frequencies are shared. Is obtained.
  • the oversized waveguides for power supply for the frequency f1 and the frequency f2 are separated and arranged near the short surfaces facing each other. With such a configuration, it is also possible to obtain an effect that the subsequent circuit components can be easily connected to each power supply port.
  • the oversize waveguide for power supply and the diplexer that can be shared at different frequencies are configured on one of the short surfaces, all the slot elements that generally resonate at different frequencies have the same frequency. This has the effect of being able to be arranged at equal intervals at approximately one wavelength interval.
  • a volatilizer for example, a meander volatilizer for converting linearly polarized light radiated from each slot element into circularly polarized wave is provided on the conductive plate, so that the concentric or reverse rotation is performed at different frequencies. The effect of being able to emit circularly polarized waves is obtained.
  • N is an integer of 2 or more linearly or arbitrarily arranged as one subarray of such a thin, low-loss, dual frequency shared slot antenna. Therefore, an effect of realizing a thin and low-loss slot array antenna having higher gain and a narrow beam can be obtained.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Aerials (AREA)

Abstract

L'invention concerne une antenne à fentes mince, à faibles pertes et à deux fréquences, qui excite des éléments fente ayant différentes fréquences de résonance à travers un guide d'ondes à plaques parallèles commun, et qui émet la même onde polarisée de manière linéaire à différentes fréquences. L'antenne à fentes comporte ces éléments fente qui ont différentes fréquences de résonance, et qui sont pratiqués sur une plaque conductrice du guide d'ondes à plaques parallèles ayant des faces courtes aux deux extrémités, de sorte que les directions des champs électriques des éléments fente sont perpendiculaires aux faces courtes.
PCT/JP1998/001933 1998-04-27 1998-04-27 Antenne a fentes WO1999056346A1 (fr)

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PCT/JP1998/001933 WO1999056346A1 (fr) 1998-04-27 1998-04-27 Antenne a fentes

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PCT/JP1998/001933 WO1999056346A1 (fr) 1998-04-27 1998-04-27 Antenne a fentes

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002033612A (ja) * 2000-07-14 2002-01-31 Mitsubishi Electric Corp ビーム走査アンテナ
EP1425817A2 (fr) * 2001-08-23 2004-06-09 Kathrein Werke KG Antenne a faisceau commute sur un double mode
JP2004266573A (ja) * 2003-02-28 2004-09-24 Nissei Electric Co Ltd 多周波アンテナ素子及び多周波アンテナ
JP2007336459A (ja) * 2006-06-19 2007-12-27 Tokyo Institute Of Technology 導波管スロットアレーアンテナ
JP2008141273A (ja) * 2006-11-30 2008-06-19 Japan Radio Co Ltd ２周波複直交偏波導波管スロットアレーアンテナおよび複直交偏波通信システム
WO2009107216A1 (fr) * 2008-02-28 2009-09-03 三菱電機株式会社 Système d'antenne de type à réseau à fentes de guide d'ondes
CN102394379A (zh) * 2011-06-21 2012-03-28 中国兵器工业第二○六研究所 双波段共孔径平板阵列天线
JP2013110494A (ja) * 2011-11-18 2013-06-06 Toko Inc 複合アンテナ
EP3621156A4 (fr) * 2017-05-25 2020-04-22 Samsung Electronics Co., Ltd. Antenne et dispositif de communication sans fil comprenant une antenne

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Cited By (14)

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JP2002033612A (ja) * 2000-07-14 2002-01-31 Mitsubishi Electric Corp ビーム走査アンテナ
EP1425817A2 (fr) * 2001-08-23 2004-06-09 Kathrein Werke KG Antenne a faisceau commute sur un double mode
EP1425817A4 (fr) * 2001-08-23 2005-10-12 Kathrein Werke Kg Antenne a faisceau commute sur un double mode
JP2004266573A (ja) * 2003-02-28 2004-09-24 Nissei Electric Co Ltd 多周波アンテナ素子及び多周波アンテナ
JP2007336459A (ja) * 2006-06-19 2007-12-27 Tokyo Institute Of Technology 導波管スロットアレーアンテナ
JP4662070B2 (ja) * 2006-11-30 2011-03-30 日本無線株式会社 ２周波複直交偏波導波管スロットアレーアンテナおよび複直交偏波通信システム
JP2008141273A (ja) * 2006-11-30 2008-06-19 Japan Radio Co Ltd ２周波複直交偏波導波管スロットアレーアンテナおよび複直交偏波通信システム
WO2009107216A1 (fr) * 2008-02-28 2009-09-03 三菱電機株式会社 Système d'antenne de type à réseau à fentes de guide d'ondes
CN101965664A (zh) * 2008-02-28 2011-02-02 三菱电机株式会社 波导管缝隙阵列天线装置
US8599090B2 (en) 2008-02-28 2013-12-03 Mitsubishi Electric Corporation Waveguide slot array antenna apparatus
CN102394379A (zh) * 2011-06-21 2012-03-28 中国兵器工业第二○六研究所 双波段共孔径平板阵列天线
JP2013110494A (ja) * 2011-11-18 2013-06-06 Toko Inc 複合アンテナ
EP3621156A4 (fr) * 2017-05-25 2020-04-22 Samsung Electronics Co., Ltd. Antenne et dispositif de communication sans fil comprenant une antenne
US11005169B2 (en) 2017-05-25 2021-05-11 Samsung Electronics Co., Ltd. Antenna and wireless communication device including antenna

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