WO2018188294A1

WO2018188294A1 - Double-stub matching open load- and coupling structure-based signal transmitting device

Info

Publication number: WO2018188294A1
Application number: PCT/CN2017/106226
Authority: WO
Inventors: 曲美君; 邓力; 李书芳; 张贯京; 葛新科; 高伟明; 张红治
Original assignee: 深圳市景程信息科技有限公司
Priority date: 2017-04-15
Filing date: 2017-10-14
Publication date: 2018-10-18
Also published as: CN206673944U

Abstract

The present utility model provides a double-stub matching open load- and coupling structure-based signal transmitting device. The signal transmitting device comprises a filter, a voltage controlled oscillator, an amplifier, and a transmitting antenna. An output end of the voltage controlled oscillator is connected to an input end of the amplifier. The filter comprises two signal transmission ends provided on a surface of a dielectric slab. An output end of the amplifier is connected to one of the signal transmission ends of the filter. The signal transmitting device provided by the present utility model can achieve a broadband out-of-band rejection function in a specific working frequency band, enable original microstrip lines to have a filtering function, and provide a good suppression effect on out-of-band signals.

Description

Signal transmitting device based on double-branch section matching open-circuit load and coupling structure

[0001] The present invention relates to the field of microwave communication technologies, and in particular, to a signal transmitting device based on a double-branch joint matching circuit load and a coupling structure.

Background technique

[0002] When a signal transmitting device transmits a signal, in order to ensure that the signal transmission is not disturbed, it is usually necessary to filter the signal through a filter. Specifically, the filter acts as a very important component of the RF front-end, which filters out out-of-band noise and improves the sensitivity of the circuitry. A microstrip filter is a device used to separate microwave signals of different frequencies. Its main function is to suppress unwanted signals so that they cannot pass through the filter and only pass the desired signal. In microwave circuit systems, the performance of the filter has a large impact on the performance of the circuit system. In general, the out-of-band rejection performance of the filter is an important influence indicator, and the out-of-band rejection performance of the existing filter is poor, which affects the performance of the entire communication system. Therefore, there is a need for a signal transmitting device having high broadband out-of-band rejection.

technical problem

[0003] The object of the present invention is to provide a signal transmitting device based on a double-branch joint matching load and coupling structure, which aims to solve the technical problem of poor broadband out-of-band rejection performance of the signal transmitting device in the prior art.

Problem solution

Technical solution

[0004] In order to achieve the above object, the present invention provides a signal transmitting apparatus based on a double-branch section matching loop load and a coupling structure, the signal transmitting apparatus including a filter, a voltage controlled oscillator, an amplifier, and a transmitting antenna. An output of the voltage controlled oscillator is coupled to an input of the amplifier, the filter comprising two signal transmission ends disposed on a surface of the dielectric plate, an output end of the amplifier and a signal transmission end of the filter Connecting, another output of the filter is connected to the transmitting antenna, wherein

[0005] The filter further includes two first microstrip lines, two second microstrip lines, and two disposed on the surface of the dielectric board a third microstrip line, two fourth microstrip lines, two fifth microstrip lines, a sixth microstrip line, and two signal transmission ends; the double branch-based matching circuit load and coupling structure The signal transmitting device is bilaterally symmetrical about a central axis, wherein the central axis is a line connecting the midpoints of the upper and lower horizontal frames of the signal transmitting device, one end of each of the first microstrip lines and a second microstrip line One end is connected to form a double-branched matching circuit load, and the other end of each second microstrip line is vertically connected to a signal output end and a third microstrip line, and each fourth microstrip line is parallelly arranged in one An upper position of the third microstrip line and a coupling structure, one end of each fourth microstrip line is connected to one end of a fifth microstrip line, and the two ends of the sixth microstrip line are respectively The other end of the fifth microstrip line is connected.

[0006] Preferably, the two first microstrip lines and the two second microstrip lines are parallel to the left and right vertical borders of the signal transmitting device.

[0007] Preferably, the two third microstrip lines, the two fourth microstrip lines, the two fifth microstrip lines, one sixth microstrip line, and two signal transmission ends are connected to the signal The upper and lower lateral frames of the launching device are parallel.

[0008] Preferably, the signal transmitting device based on the double-branch node matching circuit load and the coupling structure comprises two double-branch joint matching circuit loads and two coupling structures.

[0009] Preferably, the two signal transmission ends are used for inputting and outputting signals, wherein one signal transmission end serves as a signal input end, and the other signal transmission end serves as a signal output end.

[0010] Preferably, the first microstrip line, the second microstrip line, the third microstrip line, the fourth microstrip line, the fifth microstrip line, the sixth microstrip line, and the signal transmission end are all strips Metal copper sheet with a structure.

[0011] Preferably, the length of the first microstrip line is L4=14.4 mm, the width is W4=2.95 mm, and the length of the second microstrip line is L3=15 mm, and the width is W3=0.97 mm, The length of the triple microstrip line is the same as the length of the fourth microstrip line and both C11=15.99 mm is C11=15.99 mm, and the width of the third microstrip line is the same as the width of the fourth microstrip line and both are Cwl=0.22 Mm, the distance between the third microstrip line and the fourth microstrip line is Csl=0.1m, the length of the fifth microstrip line is L1=15.2mm, and the width is Wl=0.73mm, the first The length of the six microstrip line is L2 = 15.3 mm and the width is W2 = 0.64 mm, and the length of the signal transmission end is L0 = 10 mm and the width is W0 = 1.66 mm.

[0012] Preferably, each first microstrip line has an impedance of 34 Ω, each second microstrip line has an impedance of 68 Ω, and each fifth microstrip line has an impedance of 78 Ω, each of the sixth microstrip lines The impedance is 83 Ω, the odd mode impedance of each coupling structure 22 is 60 Ω, and the even mode impedance of each coupling structure 22 is 180 Ω, and the electrical length of each coupling structure 22 It is 90 degrees.

[0013] Preferably, the signal transmitting device based on the dual-branch matching circuit load and the coupling structure is further provided with a power supply, a voltage regulating module and a voltage stabilizing module, the voltage regulating module, the voltage stabilizing module and the voltage controlled oscillator. Connected, the power source is electrically connected to the voltage regulating module and the voltage stabilizing module.

[0014] Preferably, the signal transmitting device based on the double-branch node matching circuit load and the coupling structure is further provided with a power source, a second voltage regulating module and a second voltage stabilizing module, and the second voltage regulating module and the second voltage regulating module The voltage stabilizing module and the amplifier are connected, and the power source is electrically connected to the second voltage regulating module and the second voltage stabilizing module. Advantageous effects of the invention

Beneficial effect

[0015] Compared with the prior art, the signal transmitting device based on the double-branched matching circuit load and the coupling structure of the present invention can be realized by designing two double-branch joint matching load and two coupling structures. The broadband out-of-band rejection characteristic is formed in the working frequency band, so that the original microstrip line has filtering performance, can have a good suppression effect on the out-of-band signal, has high selectivity to the passband signal, introduces less noise, and avoids causing the RF front end. interference.

Brief description of the drawing

DRAWINGS

1 is a schematic view showing the structure of a signal transmitting device based on a double-branched matching circuit load and a coupling structure according to the present invention.

2 is a schematic structural view of a preferred embodiment of a voltage controlled oscillator in a signal transmitting device based on a double-branched matching circuit load and a coupling structure according to the present invention.

3 is a schematic structural view of a preferred embodiment of an amplifier in a signal transmitting device based on a double-branched matching circuit load and coupling structure according to the present invention.

4 is a schematic structural view of a preferred embodiment of a filter in a signal transmitting apparatus based on a double-branched matching circuit load and a coupling structure according to the present invention.

5 is a schematic diagram showing the dimensions of various components of a preferred embodiment of a filter in a signal transmitting device based on a double-branched matching circuit load and coupling structure of the present invention. [0020] FIG.

[0021] FIG. 6 is a circuit schematic diagram of a preferred embodiment of a filter in a signal transmitting apparatus based on a double-branched matching circuit load and a coupling structure according to the present invention. [0022] FIG. 7 is a schematic diagram of S-parameter results simulated by the electromagnetic simulation software of the signal transmitting device based on the double-branch joint matching circuit load and the coupling structure.

BEST MODE FOR CARRYING OUT THE INVENTION

[0023] The present invention will be further described in detail below with reference to specific embodiments. The following embodiments are illustrative of the present invention, and the present invention is not limited to the following embodiments.

Referring to FIG. 1, FIG. 1 is a schematic structural view of a signal transmitting apparatus based on a double-branched matching circuit load and a coupling structure according to the present invention. In the present embodiment, the signal transmitting apparatus 1 based on the double-branch section matching circuit load and coupling structure of the present invention comprises a filter 10, a voltage controlled oscillator 20, an amplifier 30 and a transmitting antenna 40, and the voltage controlled oscillator An output of 20 is coupled to an input of said amplifier 30, an output of said amplifier 30 is coupled to an input of said filter 10, and an output of said filter 10 is coupled to an input of said transmit antenna.

[0025] The signal transmitting device 1 based on the double-branch node matching circuit load and coupling structure is used to generate a signal (for example, a communication signal) and is transmitted to the air through the transmitting antenna 40. In this embodiment, the transmitting antenna 40 is an Yagi transmitting antenna, and the transmitting antenna 40 has a transmitting frequency of between 340 and 570 MHz.

Referring to FIG. 2, FIG. 2 is a schematic structural view of a preferred embodiment of a voltage controlled oscillator in a signal transmitting apparatus based on a double-branched matching circuit load and a coupling structure according to the present invention.

[0027] The signal transmitting device 1 based on the double-branched matching circuit load and coupling structure further includes a power source 204, a first voltage regulating module 202, and a first voltage stabilizing module 203. The first voltage regulation module 202 is connected to the first voltage stabilization module 203 and the voltage controlled oscillator 20 . The power source 204 is electrically connected to the first voltage regulating module 202 and the first voltage stabilizing module 203. The power source 204 is used to provide power to the voltage controlled oscillator 20. The first voltage adjustment module 202 is configured to control the voltage controlled oscillator 20 to generate signals of different frequencies by voltage regulation. The first voltage stabilizing module 203 is configured to adjust and regulate the voltage of the power source 204 to prevent voltage fluctuations of the power source 204 from affecting the first voltage regulating module 202. In this embodiment, the first voltage adjustment module 202 can be, but is not limited to, a potentiometer or a sliding varistor. The first voltage stabilizing module 203 is a voltage regulator. It should be noted that the connecting wire between the power source 204 and the voltage controlled oscillator 20 in FIG. 2 does not form a cross path with the connecting wire between the first voltage regulating module 202 and the first voltage stabilizing module 203, but only It is convenient for the display of Fig. 2. In other embodiments, the first voltage regulation module 202 and the first voltage regulation module 203 can be To omit. It should be noted that the voltage controlled oscillator 20 is prior art and will not be described herein.

Referring to FIG. 3, FIG. 3 is a schematic structural view of a preferred embodiment of an amplifier in a signal transmitting apparatus based on a double-branched matching circuit load and a coupling structure according to the present invention.

[0029] The signal transmitting device 1 based on the double-branched matching circuit load and coupling structure further includes a second voltage regulating module 302 and a second voltage stabilizing module 303. The second voltage regulating module 302 is connected to the second voltage stabilizing module 303 and the amplifier 30. The power source 204 is electrically connected to the second voltage regulating module 302 and the second voltage stabilizing module 303. The power source 204 is used to provide power to the amplifier 30. The second voltage regulation module 302 is configured to control the amplifier 30 to generate signals of different frequencies by voltage regulation. The second voltage stabilizing module 303 is configured to adjust and regulate the voltage of the power source 204 to prevent voltage fluctuations of the power source 204 from affecting the second voltage regulating module 302. In this embodiment, the second voltage adjustment module 302 can be, but is not limited to, a potentiometer or a slip varistor. The second voltage stabilizing module 303 is a voltage regulator. It should be noted that the connecting wire between the power source 204 and the amplifier 30 in FIG. 3 does not form a cross path with the connecting wire between the second voltage regulating module 302 and the second voltage stabilizing module 303, but only for FIG. The display is convenient. In other embodiments, the second voltage regulation module 302 and the second voltage regulation module 303 may be omitted. It should be noted that the amplifier 30 (for example, an integrated operational amplifier) is prior art and will not be described herein.

[0030] In the present embodiment, the signal transmitting device 1 generates a signal through the voltage controlled oscillator 20, and amplifies the RF power of the signal through the amplifier 30, for example, amplifies the power signal of 6 dBm to an adjustable power. The signal (maximum 60 W) is filtered by the filter 10 and then transmitted through the transmitting antenna 40 into the air.

4 to 6, FIG. 4 is a schematic structural view of a preferred embodiment of a filter in a signal transmitting apparatus based on a double-branch section matching load and coupling structure according to the present invention; FIG. 5 is a double-branch section based on the present invention. FIG. 6 is a schematic diagram of a filter in a signal transmitting apparatus based on a double-branch section matching circuit load and coupling structure according to the present invention; FIG. Circuit schematic.

[0032] In this embodiment, the filter 10 includes two first microstrip lines 101, two second microstrip lines 102, two third microstrip lines 103, and two disposed on the surface of the dielectric board 1. The fourth microstrip line 104, the two fifth microstrip lines 105, one sixth microstrip line 106, and two signal transmission ends P.

[0033] The filter 10 is bilaterally symmetrical about a central axis, and the central axis is the upper and lower sides of the filter 10 a line connecting the midpoints of the horizontal borders (ie, the line ab in FIG. 1), the two first microstrip lines 101 and the two second microstrip lines 102 are both vertically aligned with the left and right sides of the filter 10. The straight borders are parallel, and the two third microstrip lines 103, the two fourth microstrip lines 104, the two fifth microstrip lines 105, one sixth microstrip line 106, and the two signal transmission ends P are both The upper and lower horizontal borders of the filter 10 are parallel. It should be noted that the central axis is not a metal component in the filter 10, but is convenient for the user to design the component on the filter 10 (for example, two firsts) for production or design. a microstrip line 101, two second microstrip lines 102, two third microstrip lines 103, two fourth microstrip lines 104, two fifth microstrip lines 105, a sixth microstrip line 106, and The two signal transmission ends P) are bilaterally symmetrical about the central axis. When the filter 10 is activated, the central axis does not participate in any operation such as signal filtering. In the present embodiment, the central axis is for the convenience of describing the left and right symmetrical structure of the filter 10.

[0034] The output of the amplifier 30 is connected to a signal transmission terminal P on the filter 10, and the other signal transmission terminal P on the filter 10 is connected to the transmitting antenna 40.

[0035] One end of each of the first microstrip lines 101 is connected to one end of a second microstrip line 102 and forms a double-branched matching circuit load 20, and the other end of each second microstrip line 102 and one The signal output terminal P and a third microstrip line 103 are vertically connected, and each of the fourth microstrip lines 104 is disposed in parallel above a third microstrip line 103 and forms a coupling structure, and each fourth microstrip One end of the line 104 is connected to one end of a fifth microstrip line 105, and both ends of the sixth microstrip line 106 are respectively connected to the other end of a fifth microstrip line 105.

[0036] The dielectric plate 1 is a PCB board, and the specific plate type is Roger RO4350B, wherein the relative dielectric constant is 3.66, and the plate thickness is 0.762 mm.

[0037] In this embodiment, the first microstrip line 101, the second microstrip line 102, the third microstrip line 103, the fourth microstrip line 104, the fifth microstrip line 105, and the sixth microstrip line 106 And the signal transmission end P is a metal copper piece of a strip structure. The signal transmitting device based on the double-branch joint matching circuit load and the coupling structure of the present invention can make the filter 10 of the present invention work by changing the length and width of the microstrip line with respect to the existing band pass filter. A good match is achieved in the band.

[0038] In this embodiment, the operating frequency band of the filter 10 is in the range of 1.88 GHz to 4.12 GHz, and the first microstrip line 101 and the second microstrip line disposed on the surface of the dielectric board 1 are illustrated by specific embodiments. 102. The lengths of the third microstrip line 103, the fourth microstrip line 104, the fifth microstrip line 105, the sixth microstrip line 106, and the signal transmission end P And width.

[0039] Specifically, as shown in FIG. 5:

[0040] The length of the first microstrip line 101 is L4 = 14.4 mm, and the width of the first microstrip line 101 is W4 = 2.95 mm.

[0041] The length of the second microstrip line 102 is L3 = 15 mm, and the width of the second microstrip line 102 is W3 = 0.97 mm.

[0042] The length of the third microstrip line 103 is the same as the length of the fourth microstrip line 104, both C11=15.99 mm is C11=15.99 mm, the width of the third microstrip line 103 and the fourth microstrip line 104 are The width is the same, both are Cwl=0.22 mm, and the distance between the third microstrip line 103 and the fourth microstrip line 104 is Csl=0.1 m.

[0043] The length of the fifth microstrip line 105 is L1 = 15.2 mm, and the width of the fifth microstrip line 105 is Wl = 0.73 mm.

[0044] The length of the sixth microstrip line 106 is L2 = 15.3 mm, and the width of the sixth microstrip line 106 is W2 = 0.64 mm.

[0045] The length of the signal transmission end P is L0=10 mm, and the width of the signal transmission end P is W0=1.66 mm.

[0046] It should be noted that the thickness of the metal copper plate disposed on the PCB board is generally um, so the present invention does not apply to the first microstrip line 101, the second microstrip line 102, and the third microstrip line 103, The thickness of the metal copper piece of the length and width of the fourth microstrip line 104, the fifth microstrip line 105, the sixth microstrip line 106, and the signal transmission end P is limited, and does not affect the double-branched matching according to the present invention. Characteristics of signal transmitters for road loads and coupling structures. In addition, two signal transmission terminals P are used for signal input and output, wherein one signal transmission terminal P serves as a signal input terminal, and the other signal transmission terminal P serves as a signal output terminal. Further, the signal input end may be the signal transmission end P on the left side in FIG. 4 or the signal transmission end P on the right side; the signal output end may be the signal transmission end P on the left side in FIG. 4, or may be the signal transmission on the right side. End P. For example, if the signal transmission terminal P on the left side of FIG. 4 serves as a signal input terminal, the signal transmission terminal P on the right side of the shell cap 4 serves as a signal output terminal, and the signal enters from the signal transmission terminal P on the left side, and is output from the signal transmission terminal P on the right side. . If the signal transmission terminal P on the left side of Fig. 4 is used as the signal output terminal, the signal transmission terminal P on the right side of Fig. 4 serves as a signal input terminal, and the signal enters from the signal transmission terminal P on the right side, and is output from the signal transmission terminal P on the left side.

[0047] Further, as shown in FIG. 6, a first microstrip line 101 and a second microstrip line 102 form a double-branched matching circuit load 20, a third microstrip line 103 and a The fourth microstrip line 104 forms a coupling structure 22. As can be seen from Figure 3, the filter 10 includes two double-branch junction-carrying loads 20 and two coupling structures 22.

[0048] In this embodiment, the impedance of each of the first microstrip lines 101 is 34 ohms (Ω), and the impedance of each of the second microstrip lines 102 is 68 ohms (Ω), each of the fifth microstrips. Line 105 has an impedance of 78 ohms (Ω), each The impedance of the six microstrip line 106 is 83 ohms (Ω), the odd mode impedance of each coupling structure 22 is 60 ohms (Ω), and the even mode impedance of each coupling structure 22 is 180 ohms (Ω), each coupling structure The electrical length of 22 is 90 degrees.

[0049] The signal transmitting device based on the double-branched matching circuit load and the coupling structure according to the present invention can be formed in a specific working frequency band by designing two double-branched matching circuit load 20 and two coupling structures 22 The broadband out-of-band rejection feature makes the original microstrip line have filtering performance, which can have a good suppression effect on the out-of-band signal, high selectivity to the passband signal, introduce less noise, and avoid interference to the RF front end.

Referring to FIG. 7, FIG. 7 is a schematic diagram of S-parameter results simulated by the electromagnetic simulation software of the signal transmitting device based on the double-branched matching circuit load and the coupling structure of the present invention.

As can be seen from FIG. 7, the filter 10 has a relative bandwidth of 74.67% between 1.88 GHz and 4.12 GHz in the operating frequency band. At the same time, outside the working band and below 1.64 GHz, IS11 beeps less than -10 dB, and between the operating frequency bands of 4.36 GHz and 7.64 GHz, 18121 is less than -10 (18, as can be seen from Figure 7, the filtering The device 10 has a broadband out-of-band rejection characteristic. It can be seen that the signal transmitting device based on the double-branch-matching circuit load and the coupling structure of the present invention can have a good suppression effect on the out-of-band signal and a high selectivity to the passband signal. , introducing less noise to avoid interference with the RF front end.

The above is only a preferred embodiment of the present invention, and thus does not limit the scope of the patent of the present invention, and the equivalent structure or equivalent process transformation using the specification and the drawings of the present invention, or directly or indirectly In other related technical fields, the same is included in the scope of patent protection of the present invention.

Industrial applicability

Compared with the prior art, the signal transmitting device based on the double-branch joint matching circuit load and the coupling structure of the present invention can be realized by designing two double-branch joint matching load and two coupling structures. The broadband out-of-band rejection characteristic is formed in the working frequency band, so that the original microstrip line has filtering performance, can have a good suppression effect on the out-of-band signal, has high selectivity to the passband signal, introduces less noise, and avoids causing the RF front end. interference.

Claims

Claim

A signal transmitting device based on a double-branch node matching circuit load and a coupling structure, wherein the signal transmitting device comprises a filter, a voltage controlled oscillator, an amplifier and a transmitting antenna, and an output end of the voltage controlled oscillator An input end of the amplifier is connected, the filter includes two signal transmission ends disposed on a surface of the dielectric board, an output end of the amplifier is connected to a signal transmission end of the filter, and another one of the filters The output end is connected to the transmitting antenna, wherein: the filter further comprises two first microstrip lines, two second microstrip lines, two third microstrip lines, two roots disposed on the surface of the dielectric board a four microstrip line, two fifth microstrip lines, a sixth microstrip line, and two signal transmission ends; the signal transmitting device based on the double branch section matching the load and the coupling structure is bilaterally symmetric about the central axis, The central axis is a line connecting the midpoints of the upper and lower horizontal frames of the signal transmitting device, and one end of each of the first microstrip lines is connected to one end of a second microstrip line Forming a double branch matching 幵 load, the other end of each second microstrip line is perpendicularly connected to a signal output end and a third microstrip line, and each fourth microstrip line is parallelly disposed in a third An upper position of the microstrip line and a coupling structure, one end of each fourth microstrip line is connected to one end of a fifth microstrip line, and the two ends of the sixth microstrip line are respectively connected with a fifth micro Connect the other end of the line.

The signal transmitting device based on the double-branched matching circuit load and coupling structure according to claim 1, wherein the two first microstrip lines and the two second microstrip lines are combined with the signal transmitting device The two vertical borders are parallel.

The signal transmitting device based on the double-branched matching circuit load and coupling structure according to claim 1, wherein the two third microstrip lines, the two fourth microstrip lines, and the two fifth microstrips The line, a sixth microstrip line and two signal transmission ends are both parallel to the upper and lower lateral frames of the signal transmitting device.

The signal transmitting apparatus based on the double-branch section matching circuit load and coupling structure according to claim 1, wherein the signal transmitting apparatus based on the double-branch section matching load and coupling structure comprises two double-branch section matching circuits Load and two coupling structures.

Signal transmission based on double-branch section matching circuit load and coupling structure according to claim The transmitting device is characterized in that the two signal transmitting ends are used for inputting and outputting signals, wherein one signal transmitting end serves as a signal input end and the other signal transmitting end serves as a signal output end.

The signal transmitting apparatus based on the double-branch section matching circuit load and coupling structure according to claim 1, wherein the first microstrip line, the second microstrip line, the third microstrip line, and the fourth microstrip The wire, the fifth microstrip line, the sixth microstrip line and the signal transmission end are metal copper sheets of a strip structure.

The signal transmitting device based on the double-branched matching circuit load and coupling structure according to claim 6, wherein the length of the first microstrip line is L4=14.4 mm and the width is W4=2.95 mm. The length of the second microstrip line is L3=15 mm and the width is W3=0.97 mm, and the length of the third microstrip line is the same as the length of the fourth microstrip line and both are C11=15.99 mm for C11=15.99 mm, third The width of the microstrip line is the same as the width of the fourth microstrip line and both are Cwl=0.22 mm, and the distance between the third microstrip line and the fourth microstrip line is Csl=0.1 m, the fifth micro The length of the strip line is L1=15.2 mm, the width is Wl=0.73 mm, the length of the sixth microstrip line is L2=15.3 mm, the width is W2=0.64 mm, and the length of the signal transmission end is L0=10 mm, The width is W0=1.66mm.

The signal transmitting apparatus based on the double-branch section matching circuit load and coupling structure according to claim 6, wherein each first microstrip line has an impedance of 34 Ω, and each second microstrip line has an impedance of 68 Ω. The impedance of each fifth microstrip line is 78 Ω, the impedance of each sixth microstrip line is 83 Ω, the odd mode impedance of each coupling structure 22 is 60 Ω, and the even mode impedance of each coupling structure 22 is 180 Ω, each The electrical length of the coupling structure 22 is 90 degrees.

The signal transmitting apparatus based on the double-branch section matching circuit load and the coupling structure according to claim 1, wherein the signal transmitting apparatus based on the double-branch section matching the load and the coupling structure is further provided with a power source, and the first The voltage regulation module and the first voltage regulation module are connected to the first voltage regulation module and the voltage control oscillator, and the power source is electrically connected to the first voltage regulation module and the first voltage regulation module.

The signal transmitting apparatus based on the double-branch section matching circuit load and coupling structure according to claim 1, wherein the signal based on the double-branch section matching the load and the coupling structure The power transmitting device is further provided with a power source, a second voltage regulating module and a second voltage stabilizing module, wherein the second voltage regulating module is connected to the second voltage stabilizing module and the amplifier, the power source and the second voltage regulating module and the second The voltage regulator module is electrically connected.