WO2006009006A1 - デジタル放送受信用アンテナ装置及びこれを搭載した移動体 - Google Patents
デジタル放送受信用アンテナ装置及びこれを搭載した移動体 Download PDFInfo
- Publication number
- WO2006009006A1 WO2006009006A1 PCT/JP2005/012802 JP2005012802W WO2006009006A1 WO 2006009006 A1 WO2006009006 A1 WO 2006009006A1 JP 2005012802 W JP2005012802 W JP 2005012802W WO 2006009006 A1 WO2006009006 A1 WO 2006009006A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- digital broadcast
- antennas
- phase
- antenna
- diversity
- Prior art date
Links
- 230000015572 biosynthetic process Effects 0.000 claims description 44
- 238000003786 synthesis reaction Methods 0.000 claims description 44
- 239000005357 flat glass Substances 0.000 claims description 17
- 230000002194 synthesizing effect Effects 0.000 claims description 7
- 239000011521 glass Substances 0.000 abstract description 26
- 239000004020 conductor Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 7
- 239000002131 composite material Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000005340 laminated glass Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/1271—Supports; Mounting means for mounting on windscreens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/084—Equal gain combining, only phase adjustments
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/0848—Joint weighting
Definitions
- the present invention relates to a moving body that moves on the ground surface, for example, a digital broadcast receiving antenna device that performs diversity reception using a glass antenna provided on a window glass of a vehicle such as an automobile, and a moving body that includes the antenna device.
- Patent Document 1 JP-A-10-70517 (Fig. 1)
- the antenna switching diversity technique is an effective technique for receiving an analog broadcast wave.
- the received electric field strength is high!
- the present invention has been made in consideration of such a problem, and is applied to a moving body that moves on the ground surface, whereby a digital broadcast receiving antenna device that can obtain high-level reception characteristics can be obtained. And it aims at providing the mobile body carrying this.
- the present invention is also applicable to a digital broadcast receiving antenna device that performs diversity reception using a glass antenna provided on a window glass of a vehicle such as an automobile such as an automobile, which moves on the ground surface. It is an object of the present invention to provide an antenna device for a vehicle and a mobile object equipped with the antenna device.
- the digital broadcast receiving antenna device includes at least two digital broadcasts out of a plurality of antennas provided on the moving body 12 moving on the ground surface and digital broadcast waves received by the plurality of antennas.
- At least two digital broadcast wave signals received by a plurality of antennas are in-phase combined by a plurality of in-phase combining means, and diversity combining is performed on the signals after in-phase combining by diversity combining means. Therefore, high-level reception characteristics of digital broadcast waves can be obtained.
- the complex receiving the digital broadcast wave synthesized in phase by the in-phase synthesis means is preferably arranged to aim for omnidirectionality. Ideally, if the omnidirectional antenna that receives radio waves equally in all directions of 360 ° can be configured, how the mobile body looks Radio waves can be received efficiently even when facing in any direction.
- the digital broadcast receiving antenna device having such a configuration is applied to a moving body that moves on the surface of the ground such as a road, a lake, and sand, and particularly to a vehicle such as an automobile that relatively changes the traveling direction. It is preferable to apply.
- one antenna is provided on each window glass facing each other on both sides of the vehicle, and two antennas are provided on the rear window glass. Is provided.
- the digital broadcast wave signal obtained by both antennas of one antenna adjacent to the feeding section is in-phase combined by the in-phase combining means.
- the digital broadcast wave signals obtained by both antennas of the antenna on the other side and the remaining one of the two antennas on the rear side that are adjacent to each other are fed in phase by the in-phase combining means.
- the four antennas related to the in-phase synthesis / diversity synthesis provided on the window glass of a vehicle such as an automobile complement the directivity of each antenna, and all the 360 ° are It is preferable that the antennas are arranged so as to be omnidirectional antennas (all-around directional antennas) that receive radio waves evenly in the direction. As a result, the antenna gain of all four antennas is improved, and the reception characteristics after diversity combining are at a high level.
- At least two digital broadcast wave signals received by a plurality of antennas are in-phase combined by a plurality of in-phase combining means, and the combined signal is diversity combined by the diversity combining means. So that you can move on the surface of the earth. A high level reception characteristic of a digital broadcast wave can be obtained on a moving object.
- the present invention combines in-phase synthesis of at least two digital broadcast wave signals received by a plurality of glass antennas provided on a window glass of a vehicle that moves on the ground surface such as an automobile. Since diversity combining is performed on the subsequent signals by diversity combining means, it is possible to obtain high-level reception characteristics of digital broadcast waves in a non-directional manner on the vehicle.
- FIG. 1 is an explanatory diagram showing a schematic top view configuration of a vehicle of an automobile as a moving body according to an embodiment equipped with a digital broadcast receiving antenna device according to an embodiment of the present invention.
- FIG. 2 is an explanatory diagram showing an in-phase synthesis circuit and a connection configuration arrangement on its input / output side.
- FIG. 3 is an explanatory diagram showing an in-phase composite circuit and a connection configuration arrangement on the input / output side when two conductors connected from the antenna to the in-phase composite circuit have different lengths.
- FIG. 4 is a top view for explaining the directivity of the glass antenna.
- FIG. 5 is a schematic explanatory diagram showing the directivity after synthesis in the in-phase synthesis circuit when the directivity is tuned as shown in FIG.
- FIG. 6 is an explanatory diagram showing the configuration of a digital broadcast receiving antenna device according to another embodiment of the present invention.
- FIG. 1 shows a schematic plan view configuration of a vehicle 12 of an automobile as a moving body according to an embodiment equipped with a digital broadcast receiving antenna device 10 according to an embodiment of the present invention. .
- a digital broadcast receiving antenna device 10 such as an OFDM system includes a left and right rear quarter glass (both sides of the vehicle 12 facing each other) on both sides of the vehicle 12 in the vehicle width direction.
- (Window glass) 14L and 14R are provided as UHF antennas 21 and 22, antennas 23 and 24, and so-called glass antennas.
- the four antennas 21 to 24 are formed by embedding conductive wires in the left and right rear quarter glasses 14L and 14R in an intermediate layer of printed wiring or laminated glass.
- the antennas 21 to 24 can be provided not only on the rear quarter glasses 14L and 14R, but also on appropriate window glasses on the left and right side surfaces or on the rear window glass as described later, depending on the vehicle type.
- Each of the four antennas 21 to 24 has a so-called all-round directivity that receives radio waves equally in all directions of 360 ° by complementing the directivity by tuning the arrangement and shape of the elements. It is said that the structure is aimed at an omnidirectional antenna that can be secured.
- Digital broadcast wave signals output from the left two antennas 21 and 22 serve as in-phase combining means via the conducting wires 41 and 42 so that the phases of the power feeding units 31 and 32 are matched.
- the signal is supplied to the in-phase synthesis circuit 36 and is in-phase synthesized by the in-phase synthesis circuit 36.
- the digital broadcast wave signals output from the two antennas 23 and 24 on the right side are supplied to the in-phase synthesis circuit 38 via the conductors 43 and 44 so that the phases are matched in the power feeding units 33 and 34, and the in-phase synthesis
- the circuit 38 performs in-phase synthesis.
- the two digital broadcast wave signals synthesized by the in-phase synthesis circuits 36 and 38 are supplied to a diversity synthesis circuit 56 as a diversity synthesis means constituting the receiver 54 via conductors 51 and 52, respectively.
- the diversity combining circuit 56 combines the two supplied digital broadcast wave signals with diversity.
- the digital broadcast wave signal after diversity combining is demodulated by a demodulator (not shown) and then supplied to a display monitor (not shown) to reproduce video and audio.
- the lines 51 and 52 can be constituted by a coaxial line, a strip line by a printed wiring board, a microstrip, or the like.
- the in-phase synthesis circuits 36 and 38 and the diversity synthesis circuit 56 can be configured by component-mounted printed wiring boards.
- connection configuration arrangement of one in-phase synthesis circuit 36 and its input / output side is the same as the connection arrangement configuration of the other in-phase synthesis circuit 38 and its input / output side.
- the connection configuration arrangement on the input / output side will be described as an example.
- FIG. 2 shows the in-phase synthesis circuit 36 and the connection configuration arrangement on the input / output side thereof.
- the lengths of the conductors 41 and 42 from the power feeding sections 31 and 32 of the antennas 21 and 22 are the same, and are connected to the conductors 41 and 42 at the connection part 60 such as a Y-shaped coaxial connector fixed to the mounting plate.
- connection part 60 such as a Y-shaped coaxial connector fixed to the mounting plate.
- Each signal line and the ground line are connected directly or in a matched manner, and supplied to the diversity combining circuit 56 via the conductive line 51.
- FIG. 3 shows the in-phase synthesis circuit 36 and the connection configuration arrangement on the input / output side when the lengths of the conductors 41 and 42 cannot be the same due to the arrangement configuration.
- the frequency power of the digital broadcast wave signal supplied via 2 is converted to a digital broadcast wave signal of IF frequency by frequency change ⁇ 61, 62.
- the level of the digital broadcast wave signal of IF frequency output from the frequency change ⁇ ⁇ 61, 62 and added by the adder 64, that is, the level of the signal supplied to the diversity combining circuit 56 through the conductor 51 is the maximum. As shown, feedback control is performed.
- the output of the adder 64 is converted into digital data by the AZD conversion 66, and the phase shift amount of the phase controller (phase shifter) 68 is controlled in accordance with the level of this digital data. Automatically adjusted by circuit 70.
- the local signal from the local oscillator 69 is branched, one is supplied to the frequency converter 61 through the synchronization circuit 71, and the other is supplied via the phase controller 68 and the synchronization circuit 72. Supplied to frequency shift 62.
- phase controller 68 is adjusted by the level variation control circuit 70 so that the level of the digital data by the AZD variation 66 is maximized.
- the phase controller 68 is adjusted by the level variation control circuit 70 so that the level of the digital data by the AZD variation 66 is maximized.
- the common-mode synthesis circuit 36 by configuring the common-mode synthesis circuit 36, the length limitation of the conductors 41 to 44 from the power feeding units 31 to 34 to the common-mode synthesis circuit 36 (38) is relaxed, and Ease of mounting and placement, such as wiring and circuit board placement, is improved.
- FIG. 4 is a top view for explaining the directivity of the glass antenna.
- the antennas 21 and 22 and the antennas 23 and 24 respectively have directivities 81 to 8 that are curved outward of the vehicle 12.
- FIG. 5 shows an in-phase synthesis circuit 36, 38 when the directivities 81 to 84 are tuned as shown in FIG. It is a schematic diagram which shows the directivity 85L and 85R after the synthesis in FIG.
- the directivity 85L after synthesis in the in-phase synthesis circuit 36 for the left glass antenna consists of one antenna 86L with the equivalent feeders 31 and 32 that consider the antenna 21 and the antenna 22 as a single unit. It is equivalent to the directivity tuned to have directivity in all directions (180 ° circumference direction) of the left half of the vehicle 12 outside.
- the directivity of the antenna 86R with the equivalent feeders 33 and 34 in the common position after combining in the in-phase combining circuit 38 for the right glass antenna in the same direction (180R) It is equivalent to the directivity tuned so that there is directivity in the (ambient direction).
- the four antennas 21 to 24 provided on the rear quarter glasses 14L and 14R of the vehicle 12 are respectively directed to the directivity 81 to the antennas 21 to 24 by the action of the in-phase synthesis circuits 36 and 38.
- Complementing 84 it becomes an omnidirectional antenna with directivity of 85L and 85R that receives radio waves equally in all directions of 360 °.
- the combined signals in the in-phase combining circuits 36 and 38 are supplied to the diversity combining circuit 56 in the wireless device 54.
- Diversity reception by the radio 54 having the diversity combining circuit 56 is performed by using the directivity 85L and 85R shown in FIG. Diversity synthesis is applied to the digital broadcast wave received by two equivalent antennas 86L and 86R on the front side, so the location, position, speed, direction, etc. of the vehicle 12 are changed. However, it is possible to always obtain a high level of reception characteristics.
- FIG. 6 shows the configuration of digital broadcast receiving antenna apparatus 110 according to another embodiment of the present invention.
- This digital broadcast receiving antenna device 110 is provided with one antenna 121 and 123 having power feeding portions 131 and 133 on the left and right quarter glasses 14L and 14R, respectively, and the power feeding portions on both sides of the rear window glass, that is, the rear glass 140.
- One antenna 122 and 124 each having 132 and 134 is provided.
- the antenna 121 of the left quarter glass 14L and the antenna 122 of the rear glass 140 which are close to each other, are supplied to the in-phase synthesis circuit 36 via the conductors 141 and 142, and on the right side of the vehicle 12!
- the antenna 123 of the right quarter glass 14R and the antenna 124 of the rear glass 140 are supplied to the in-phase synthesis circuit 38 via the conductors 143 and 144.
- the digital broadcast wave signal synthesized by the in-phase synthesis circuits 36 and 38 is synthesized by the diversity synthesis circuit 56.
- the antenna can be disposed on the front glass (front window glass) 150 if the installation layout is allowed or if it is a transparent electrode.
- the above-described digital broadcast receiving antenna devices 10 and 110 in FIG. 1 and FIG. 6 have the four antennas 21 to 24 and 121 to 120 provided on the window glass of the vehicle 12.
- 124 is optimally tuned and arranged to be omnidirectional.
- Two antennas ⁇ (21, 22), (23, 24) ⁇ , ⁇ (121, 122), (123, 124) ⁇ Is combined with the feeding parts ⁇ (31, 32), (33, 34) ⁇ , ⁇ (131, 132), (133, 134) ⁇ , and the output ends of the two antennas 86L and 86R by this combination Is connected to a diversity combining circuit 56 that performs diversity combining so as to perform optimal combining, so that antenna gain can be improved and reception sensitivity of digital broadcast waves can be increased.
- the four antennas can be output from two equivalent antennas 86L and 86R by so-called feeding unit synthesis by the in-phase synthesis circuits 36 and 38, which makes complex and expensive diversity.
- the synthesis circuit 56 can be halved to one. As a result, the cost of the receiver 54 can be reduced.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Transmission System (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/631,739 US20080026705A1 (en) | 2004-07-15 | 2005-07-12 | Digital Broadcast Receiving Antenna Apparatus and Movable Body Incorporating the Same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004209108A JP2006033407A (ja) | 2004-07-15 | 2004-07-15 | デジタル放送受信用アンテナ装置及びこれを搭載した移動体 |
JP2004-209108 | 2004-07-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006009006A1 true WO2006009006A1 (ja) | 2006-01-26 |
Family
ID=35785122
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/012802 WO2006009006A1 (ja) | 2004-07-15 | 2005-07-12 | デジタル放送受信用アンテナ装置及びこれを搭載した移動体 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20080026705A1 (ja) |
JP (1) | JP2006033407A (ja) |
CN (1) | CN1973452A (ja) |
WO (1) | WO2006009006A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009105615A (ja) * | 2007-10-23 | 2009-05-14 | Panasonic Corp | 車載アンテナ装置 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006039357B4 (de) * | 2005-09-12 | 2018-06-28 | Heinz Lindenmeier | Antennendiversityanlage zum Funkempfang für Fahrzeuge |
JP4913580B2 (ja) * | 2006-12-18 | 2012-04-11 | ダイキョーニシカワ株式会社 | 自動車のアンテナ装置 |
JP2008199454A (ja) * | 2007-02-15 | 2008-08-28 | Mitsubishi Electric Corp | テレビジョン受信装置 |
CA2710499C (en) * | 2008-10-02 | 2013-05-14 | Central Glass Company, Limited | Vehicular glass antenna |
JP5560607B2 (ja) * | 2008-11-26 | 2014-07-30 | セントラル硝子株式会社 | ガラスアンテナ |
US9266405B1 (en) | 2009-07-23 | 2016-02-23 | Stephen R. Blanchard | Roof top automobile ventilation system |
DE102010003646A1 (de) * | 2010-04-06 | 2011-10-06 | Robert Bosch Gmbh | Antennenanordnung für Fahrzeuge zum Senden und Empfangen |
DE102010041612B4 (de) | 2010-09-29 | 2021-02-11 | Bayerische Motoren Werke Aktiengesellschaft | Empfangsanordnung eines Kraftfahrzeugs |
JP5472348B2 (ja) * | 2012-03-15 | 2014-04-16 | 旭硝子株式会社 | ガラスアンテナチューニング方法 |
JP5873926B2 (ja) * | 2012-06-13 | 2016-03-01 | 本田技研工業株式会社 | 車両用通信装置のアンテナ配置構造 |
CN110506362A (zh) * | 2016-12-12 | 2019-11-26 | Ami研发有限责任公司 | 用于车辆的am / fm定向天线阵列 |
JP7447716B2 (ja) | 2020-07-13 | 2024-03-12 | Agc株式会社 | 車両用窓ガラス |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6281101A (ja) * | 1985-10-03 | 1987-04-14 | Asahi Glass Co Ltd | 自動車のダイバ−シテイ−アンテナ装置 |
JPH0591003A (ja) * | 1991-09-25 | 1993-04-09 | Mazda Motor Corp | 車両用アンテナ装置 |
JPH0936631A (ja) * | 1995-07-24 | 1997-02-07 | Central Glass Co Ltd | 自動車用アンテナ装置 |
JPH1117595A (ja) * | 1997-06-26 | 1999-01-22 | Nippon Denki Ido Tsushin Kk | 4面ダイバーシティアンテナ装置 |
JP2003179531A (ja) * | 2001-12-10 | 2003-06-27 | Alps Electric Co Ltd | Ofdm信号受信装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6449469B1 (en) * | 1999-03-01 | 2002-09-10 | Visteon Global Technologies, Inc. | Switched directional antenna for automotive radio receivers |
EP1318641A3 (en) * | 2001-12-10 | 2006-10-04 | Alps Electric Co., Ltd. | Carrier recovery with antenna diversity |
-
2004
- 2004-07-15 JP JP2004209108A patent/JP2006033407A/ja active Pending
-
2005
- 2005-07-12 US US11/631,739 patent/US20080026705A1/en not_active Abandoned
- 2005-07-12 WO PCT/JP2005/012802 patent/WO2006009006A1/ja active Application Filing
- 2005-07-12 CN CNA2005800208244A patent/CN1973452A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6281101A (ja) * | 1985-10-03 | 1987-04-14 | Asahi Glass Co Ltd | 自動車のダイバ−シテイ−アンテナ装置 |
JPH0591003A (ja) * | 1991-09-25 | 1993-04-09 | Mazda Motor Corp | 車両用アンテナ装置 |
JPH0936631A (ja) * | 1995-07-24 | 1997-02-07 | Central Glass Co Ltd | 自動車用アンテナ装置 |
JPH1117595A (ja) * | 1997-06-26 | 1999-01-22 | Nippon Denki Ido Tsushin Kk | 4面ダイバーシティアンテナ装置 |
JP2003179531A (ja) * | 2001-12-10 | 2003-06-27 | Alps Electric Co Ltd | Ofdm信号受信装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009105615A (ja) * | 2007-10-23 | 2009-05-14 | Panasonic Corp | 車載アンテナ装置 |
Also Published As
Publication number | Publication date |
---|---|
CN1973452A (zh) | 2007-05-30 |
US20080026705A1 (en) | 2008-01-31 |
JP2006033407A (ja) | 2006-02-02 |
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