WO2014061381A1 - 減結合回路 - Google Patents
減結合回路 Download PDFInfo
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- WO2014061381A1 WO2014061381A1 PCT/JP2013/074698 JP2013074698W WO2014061381A1 WO 2014061381 A1 WO2014061381 A1 WO 2014061381A1 JP 2013074698 W JP2013074698 W JP 2013074698W WO 2014061381 A1 WO2014061381 A1 WO 2014061381A1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P9/00—Delay lines of the waveguide type
- H01P9/006—Meander lines
Definitions
- the present invention relates to a decoupling circuit connected to a plurality of antennas mounted on a radio communication device or the like, and more particularly to a decoupling circuit that reduces coupling between two antennas.
- the present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a decoupling circuit that can reduce coupling between antennas over a wide band.
- a decoupling circuit includes first and second distribution circuits that distribute one input into two or combine two inputs into one, and a transmission line having a predetermined characteristic impedance.
- 1 is a distribution circuit that includes first to third terminals, outputs a high-frequency signal input from the first terminal to the second and third terminals
- the second distribution circuit includes: , A distribution circuit that includes fourth to sixth terminals, and outputs a high-frequency signal input from the fourth terminal to the fifth and sixth terminals, and includes a third terminal and one end of the transmission line.
- a decoupling circuit connecting the sixth terminal and the other end of the transmission line, and connecting the first antenna to the second terminal and connecting the second antenna to the fifth terminal It is what you do.
- the decoupling circuit includes a first distribution circuit that outputs a high-frequency signal input from the first terminal to the second and third terminals, and fourth to sixth terminals. And a second distribution circuit for outputting the high-frequency signal input from the fifth and sixth terminals, connecting the third terminal and one end of the transmission line, and connecting the sixth terminal and the transmission line. Since the other end is connected, the first antenna is connected to the second terminal, and the second antenna is connected to the fifth terminal, decoupling that can reduce coupling between antennas over a wide band A circuit can be obtained.
- FIG. 1 is a block diagram showing a decoupling circuit according to Embodiment 1 of the present invention.
- FIG. 2 is an example of an antenna to which the decoupling circuit according to the first embodiment is applied, and is a diagram showing a two-element dipole antenna.
- FIG. 3 is a calculation result of inter-antenna coupling in the two-element dipole antenna of FIG.
- FIG. 4 shows the coupling amplitude and phase of paths A and B when the decoupling circuit according to the first embodiment is applied to the two-element dipole antenna of FIG.
- FIG. 1 is a block diagram showing a decoupling circuit according to Embodiment 1 of the present invention.
- FIG. 2 is an example of an antenna to which the decoupling circuit according to the first embodiment is applied, and is a diagram showing a two-element dipole antenna.
- FIG. 3 is a calculation result of inter-antenna coupling in the two-element dipole antenna of FIG.
- FIG. 4 shows the coup
- FIG. 5 shows the coupling amount when the decoupling circuit according to the first embodiment is applied to the two-element dipole antenna of FIG.
- FIG. 6 shows the amount of coupling when the decoupling circuit of Non-Patent Document 1 is applied to the two-element dipole antenna of FIG.
- the second distribution circuit 32 has fourth to sixth terminals.
- the fourth terminal of the second distribution circuit 32 is connected to the input / output terminal 4.
- the fifth terminal of the second distribution circuit 32 is connected to the opposite side of the input / output terminal 2 from the second antenna 52.
- a sixth terminal of the second distribution circuit 32 and the other end of the transmission line 21 are connected to the connection unit 12.
- the characteristic impedance of the transmission line 21 is the same as the standardized impedance for designing the first and second distribution circuits 31 and 32 (for example, 50 ⁇ ), the design becomes easy, but the value is not limited here. Absent.
- the first distribution circuit 31 distributes the high frequency signal to the input / output terminal 1 and the connection portion 11.
- the high-frequency signal distributed to the input / output terminal 1 is input to the first antenna 51, and electromagnetic waves are radiated from the first antenna 51. A part of this electromagnetic wave is received by the second antenna 52 and input to the input / output terminal 2.
- the high-frequency signal distributed to the connection unit 11 passes through the transmission line 21 and is input to the connection unit 12.
- the signal input to the input / output terminal 2 and the signal input to the connection unit 12 are combined by the second distribution circuit 32 and output to the input / output terminal 4.
- the path of the input / output terminal 3 ⁇ the first distribution circuit 31 ⁇ the input / output terminal 1 ⁇ the first antenna 51 ⁇ the second antenna 52 ⁇ the input / output terminal 2 ⁇ the second distribution circuit 32 ⁇ the input / output terminal 4 Is route A (first route).
- f is the frequency
- ⁇ (f) is the coupling amplitude at frequency f
- ⁇ (f) is the coupling phase at frequency f.
- the route of the input / output terminal 3 ⁇ the first distribution circuit 31 ⁇ the connection unit 11 ⁇ the transmission line 21 ⁇ the connection unit 12 ⁇ the second distribution circuit 32 ⁇ the input / output terminal 4 is defined as a route B (second route).
- f is the frequency
- ⁇ (f) is the coupling amplitude at the frequency f
- ⁇ (f) is the coupling phase at the frequency f.
- the frequency band to be used is f 1 to f 2 . Further, the center frequency in this frequency band is assumed to be f 0 .
- the distribution ratio of the first distribution circuit 31 and the second distribution circuit 32 is determined so that the coupling amplitude ⁇ (f) of the path A and the coupling amplitude ⁇ (f) of the path B are substantially equal within the band. .
- the passing amplitude (dB) from the input / output terminal 3 to the input / output terminal 1 is P 1
- the passing amplitude (dB) from the input / output terminal 3 to the connection portion 11 is P 2
- the passing amplitude (dB) from the input / output terminal 4 to the input / output terminal 2 is P 1
- the passing amplitude (dB) from the input / output terminal 4 to the connection portion 12 is P 2
- the average value of the maximum value and the minimum value in the band of the amplitude of the coupling between the antennas shown in FIG. 3 is ⁇ (dB).
- P 2 is obtained from the following equation so that the coupling amplitudes of the route A and the route B in FIG.
- the coupling phase ⁇ of the path A is equal to the phase of coupling between antennas shown in FIG.
- the length of the transmission line 21 is obtained by the following equation, so that the coupling phase of the path A and the coupling phase of the path B are opposite in phase at f 0 , and the group delays of the path A and the path B are substantially equal.
- the units of ⁇ and ⁇ are [deg. ] (Degrees).
- FIG. 4 shows the amplitude and phase of the combination of paths A and B in this example. It can be confirmed that the coupling amplitudes are almost equal in the paths A and B. Further, the coupling phase is different by about 180 degrees between the paths A and B in the band, and it can be confirmed that the group delay (the slope of the frequency characteristic of the phase) is almost equal.
- FIG. 5 shows the amplitude of the coupling S 43 from the input / output terminal 3 to the input / output terminal 4 (a combination of paths A and B).
- the coupling amount is -25 dB or less, and it can be confirmed that the coupling amount is reduced by this decoupling circuit.
- FIG. 6 shows the amount of coupling when the decoupling circuit of Non-Patent Document 1 is installed on the two-element dipole antenna shown in FIG.
- the coupling amount is ⁇ 20 dB or less, but it can be confirmed that the coupling amount deteriorates as the frequency approaches the end of the band, and the coupling amount cannot be reduced over the entire band.
- the first and second distribution circuits that distribute one input into two or synthesize two inputs into one, and a predetermined characteristic impedance
- the first distribution circuit is a distribution circuit that includes first to third terminals and outputs a high-frequency signal input from the first terminal to the second and third terminals
- the second distribution circuit is a distribution circuit that includes fourth to sixth terminals, and outputs a high-frequency signal input from the fourth terminal to the fifth and sixth terminals.
- a decoupling circuit that connects the terminal and one end of the transmission line, and connects the sixth terminal and the other end of the transmission line, and connects the first antenna to the second terminal; Since the second antenna is connected to the terminal, coupling between antennas is reduced over a wide band. Decoupling that can have the effect that can be obtained.
- the fourth terminal from the first terminal through the first distribution circuit, the first antenna, the space, the second antenna, and the second distribution circuit.
- the path output from the first terminal to the fourth terminal through the first distribution circuit, transmission line, and second distribution circuit is defined as the second path.
- the distribution ratio between the first distribution circuit and the second distribution circuit is determined so that the coupling amplitude of the first path is substantially equal to the coupling amplitude of the second path, and the length of the transmission line is set to
- the coupling phase of the first path and the coupling phase of the second path are substantially opposite in phase at the center frequency of the use frequency band, and the difference between the coupling phase at the upper limit frequency and the lower limit frequency of the use frequency band is Since the lengths of the first route and the second route are almost equal to each other, It is possible to reduce the amount of coupling between the terminal and the fourth terminal.
- FIG. 7 is a configuration diagram showing a decoupling circuit according to the second embodiment.
- the first directional coupler 33 has first to fourth terminals.
- the first terminal is connected to the input / output terminal 3, and the second terminal is connected to the opposite side of the input / output terminal 1 from the first antenna 51.
- the third terminal of the first directional coupler 33 and one end of the transmission line 21 are connected to the connection unit 11.
- a fourth terminal of the first directional coupler 33 and the other end of the termination resistor 201 are connected to the connection unit 13.
- the second directional coupler 34 has four terminals from fifth to eighth.
- the fifth terminal is connected to the input / output terminal 4, and the sixth terminal is connected to the opposite side of the input / output terminal 2 from the second antenna 52.
- a seventh terminal of the second directional coupler 34 and the other end of the transmission line 21 are connected to the connection unit 12.
- An eighth terminal of the second directional coupler 34 and the other end of the termination resistor 202 are connected to the connection unit 14.
- the first directional coupler 33 is a directional coupler that outputs a high-frequency signal input from the first terminal to the second and third terminals and does not output to the fourth terminal.
- the second directional coupler 34 is a directional coupler that outputs a high-frequency signal input from the fifth terminal to the sixth and seventh terminals and does not output it to the eighth terminal.
- the isolation between the input / output terminal 1 of the first directional coupler 33 and the connection portion 11 is ensured, and the input / output terminal 2 of the second directional coupler 34 is Since the isolation of the connecting portion 12 is ensured, the design can be easily performed.
- the values of the first and second termination resistors 201 and 202 are generally the same as the standardized impedance for designing the first and second directional couplers 33 and 34 (for example, 50 ⁇ ). This is not a limitation. Further, the coupling amount of the first directional coupler 33 and the second directional coupler 34 is determined so that the coupling amplitude of the path A and the coupling amplitude of the path B are substantially equal. Further, the length L of the transmission line 21 is obtained in the same manner as in the first embodiment.
- the ground conductor are connected via a first termination resistor, and the eighth terminal and the ground conductor are connected via a second termination resistor. Since the first antenna is connected to the second terminal and the second antenna is connected to the sixth terminal, the coupling between the antennas can be reduced over a wide band and the design is possible. However, it is possible to obtain an easy decoupling circuit.
- the first distribution circuit 31 of the decoupling circuit according to the first embodiment is a first Wilkinson distribution circuit 35
- the second distribution circuit 32 is a second distribution circuit.
- the first Wilkinson distribution circuit 35 is provided with transmission lines 301 to 305, a resistor 203, and connection portions 15 to 17.
- transmission lines 306 to 310, a resistor 204, and connection portions 18 to 20 are provided.
- the characteristic impedance Z 0 ′ of the transmission lines 301 and 306, the characteristic impedance Z 2 of the transmission lines 302 and 307, and the characteristic impedance Z 3 of the transmission lines 303 and 308 are expressed by the following equations.
- the coupling amount between the input / output terminal 1 and the connection portion 11 is very small. Further, in the second Wilkinson distribution circuit 36, the coupling amount between the input / output terminal 2 and the connection portion 12 is very small.
- the first distribution circuit is the first Wilkinson distribution circuit
- the second distribution circuit is the second Wilkinson distribution circuit
- the isolation between the second and third terminals is ensured
- the isolation between the fifth and sixth terminals is ensured.
- the transmission line is a meander line
- the coupling between antennas can be reduced over a wide band, and a small decoupling circuit can be obtained.
- the transmission line 21 of the decoupling circuit according to the first embodiment is a phase shift circuit 23 composed of a plurality of lumped constant elements.
- 10 is a diagram showing a decoupling circuit according to the fifth embodiment of the present invention
- FIG. 11 is a diagram showing a decoupling circuit having another configuration according to the fifth embodiment.
- the transmission line 21 of the decoupling circuit according to the first embodiment is a phase shift circuit 23 composed of lumped constant elements.
- the phase shift circuit 23 is provided with a plurality of capacitors 211 and a plurality of inductors 212.
- One end of the capacitor 211 is connected to the ground conductor 101.
- One inductor 212 is installed between each capacitor 211, and the end of the capacitor 211 opposite to the ground conductor is connected by the inductor 212.
- the phase shift circuit 23 may have a configuration in which a plurality of parallel capacitors 211 and a plurality of series inductors 212 are alternately connected.
- T-type and saddle-type circuits configured using lumped elements (capacitors, inductors) can be used as phase shift circuits. In addition, if a plurality of these are combined, the amount of phase shift can be increased.
- the phase shift circuit 23 shown in FIGS. 10 and 11 is configured as described above, and is configured only by the lumped constant element, so that the size can be reduced.
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Abstract
Description
実施の形態1.
図1は、この発明の実施の形態1による減結合回路を示す構成図である。図2は、実施の形態1に係る減結合回路を適用するアンテナの例であり、2素子のダイポールアンテナを示す図である。図3は、図2の2素子ダイポールアンテナにおけるアンテナ間結合の計算結果である。図4は、図2の2素子ダイポールアンテナに実施の形態1に係る減結合回路を適用した場合の経路A、Bの結合の振幅、位相である。図5は、図2の2素子ダイポールアンテナに実施の形態1に係る減結合回路を適用した場合の結合量である。図6は、図2の2素子ダイポールアンテナに非特許文献1の減結合回路を適用した場合の結合量である。
入出力端子3に高周波信号を入力すると、第1の分配回路31により、高周波信号が入出力端子1と接続部11へ分配される。入出力端子1へ分配された高周波信号は第1のアンテナ51に入力され、第1のアンテナ51から電磁波が放射される。この電磁波は、その一部が第2のアンテナ52で受信され、入出力端子2に入力される。一方、接続部11へ分配された高周波信号は伝送線路21を通過し、接続部12に入力される。入出力端子2に入力された信号と、接続部12に入力された信号は、第2の分配回路32により合成され、入出力端子4に出力される。
(1)中心周波数f0において、経路Aの結合位相φ(f0)と経路Bの結合位相θ(f0)がほぼ逆相となる。
(2)φ(f2)-φ(f1)がθ(f2)-θ(f1)とほぼ等しくなる。すなわち、経路Aと経路Bの群遅延がほぼ等しくなる。
本実施の形態2では、実施の形態1に係る減結合回路の第1,第2の分配回路31,32を、第1,第2の方向性結合器33,34としたものである。図7は実施の形態2に係る減結合回路を示す構成図である。
本実施の形態3では、実施の形態1に係る減結合回路の第1,第2の分配回路31,32を、第1,第2のウィルキンソン分配回路35,36としたものであり、図8に、この発明の実施の形態3に係る減結合回路を示す。
本実施の形態4では、実施の形態1に係る減結合回路の伝送線路21を、メアンダライン22としたものであり、図9に実施の形態4に係る減結合回路を示す。
本実施の形態5では、実施の形態1に係る減結合回路の伝送線路21を、複数の集中定数素子から成る移相回路23としたものである。図10は、この発明の実施の形態5に係る減結合回路を示す図であり、図11は、実施の形態5に係る別の構成の減結合回路を示す図である。
Claims (9)
- 一つの入力を二つに分配または二つの入力を一つに合成する第1、第2の分配回路と、所定の特性インピーダンスを有する伝送線路とを備え、
前記第1の分配回路は、第1~第3の端子を備え、前記第1の端子から入力された高周波信号を前記第2と第3の端子に出力する分配回路であり、かつ、前記第2の分配回路は、第4~第6の端子を備え、前記第4の端子から入力された高周波信号を前記第5と第6の端子に出力する分配回路であり、
かつ、
前記第3の端子と前記伝送線路の一端とを接続すると共に、前記第6の端子と前記伝送線路の他端とを接続した減結合回路であって、
前記第2の端子に第1のアンテナを接続すると共に、前記第5の端子に第2のアンテナを接続することを特徴とする減結合回路。 - 前記第1の端子から前記第1の分配回路、前記第1のアンテナ、空間、前記第2のアンテナ、前記第2の分配回路を介して、前記第4の端子へ出力される経路を第1の経路とし、
前記第1の端子から前記第1の分配回路、前記伝送線路、前記第2の分配回路を介して、前記第4の端子へ出力される経路を第2の経路とし、
前記第1の経路の結合振幅と前記第2の経路の結合振幅がほぼ等しくなるように、前記第1の分配回路と前記第2の分配回路の分配比を決定すると共に、
前記伝送線路の長さを、前記第1の経路の結合位相と前記第2の経路の結合位相が、使用周波数帯域の中心周波数においてほぼ逆相で、かつ、当該使用周波数帯域の上限周波数における結合位相と下限周波数における結合位相の差が、前記第1の経路と前記第2の経路でほぼ等しくなるような長さとしたことを特徴とする請求項1記載の減結合回路。 - 第1,第2の方向性結合器と、伝送線路と、第1,第2の終端抵抗と、グランド導体とを備え、
前記第1の方向性結合器は、第1~第4の端子を備え、前記第1の端子から入力された高周波信号を前記第2と第3の端子に出力し、前記第4の端子には出力しない方向性結合器であり、かつ、前記第2の方向性結合器は、第5~第8の端子を備え、前記第5の端子から入力された高周波信号を前記第6と第7の端子に出力し、前記第8の端子には出力しない方向性結合器であって、
かつ、
前記第3の端子と前記伝送線路の一端を接続すると共に、前記第7の端子と前記伝送線路の他端を接続し、かつ、前記第4の端子と前記グランド導体とを前記第1の終端抵抗を介して接続すると共に、前記第8の端子と前記グランド導体とを前記第2の終端抵抗を介して接続した減結合回路であって、
前記第2の端子に第1のアンテナを接続し、前記第6の端子に第2のアンテナを接続したことを特徴とする減結合回路。 - 前記第1の端子から前記第1の方向性結合器、前記第1のアンテナ、空間、前記第2のアンテナ、前記第2の方向性結合器を介して、前記第5の端子へ出力される経路を第1の経路とし、
前記第1の端子から前記第1の方向性結合器、前記伝送線路、前記第2の方向性結合器を介して、前記第5の端子へ出力される経路を第2の経路とし、
前記第1の経路の結合振幅と前記第2の経路の結合振幅がほぼ等しくなるように、前記第1の方向性結合器と前記第2の方向性結合器の結合量を決定すると共に、
前記伝送線路の長さを、前記第1の経路の結合位相と前記第2の経路の結合位相が、使用周波数帯域の中心周波数においてほぼ逆相で、かつ、当該使用周波数帯域の上限周波数における結合位相と下限周波数における結合位相の差が、前記第1の経路と前記第2の経路でほぼ等しくなるような長さとしたことを特徴とする請求項3記載の減結合回路。 - 前記第1の分配回路を第1のウィルキンソン分配回路とすると共に、前記第2の分配回路を第2のウィルキンソン分配回路とし、
前記第1のウィルキンソン分配回路において、前記第2、第3の端子のアイソレーションを確保し、前記第2のウィルキンソン分配回路において、前記第5、第6の端子のアイソレーションを確保したことを特徴とする請求項1記載の減結合回路。 - 前記伝送線路を、メアンダラインとしたことを特徴とする請求項1記載の減結合回路。
- 前記伝送線路を、メアンダラインとしたことを特徴とする請求項3記載の減結合回路。
- 前記伝送線路を、集中定数素子から構成された移相回路とし、当該移相回路は、並列のキャパシタと直列のインダクタが交互に複数個接続されたことを特徴とする請求項1記載の減結合回路。
- 前記伝送線路を、集中定数素子から構成された移相回路とし、当該移相回路は、並列のキャパシタと直列のインダクタが交互に複数個接続されたことを特徴とする請求項3記載の減結合回路。
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| Application Number | Priority Date | Filing Date | Title |
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| DE112013005067.6T DE112013005067T5 (de) | 2012-10-18 | 2013-09-12 | Entkopplungsschaltkreis |
| US14/433,848 US20150255865A1 (en) | 2012-10-18 | 2013-09-12 | Decoupling circuit |
| JP2014541999A JP5889425B2 (ja) | 2012-10-18 | 2013-09-12 | 減結合回路 |
| CN201380054076.6A CN104756316A (zh) | 2012-10-18 | 2013-09-12 | 去耦电路 |
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| JP2012230919 | 2012-10-18 | ||
| JP2012-230919 | 2012-10-18 |
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| EP2942639A1 (en) * | 2014-05-06 | 2015-11-11 | Delphi Technologies, Inc. | Radar antenna assembly |
| US9293812B2 (en) | 2013-11-06 | 2016-03-22 | Delphi Technologies, Inc. | Radar antenna assembly |
| CN113659311A (zh) * | 2020-05-12 | 2021-11-16 | 西安电子科技大学 | 天线装置和电子设备 |
| CN119695485A (zh) * | 2024-12-30 | 2025-03-25 | 联想(北京)有限公司 | 天线模组和电子设备 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9543644B2 (en) * | 2014-07-01 | 2017-01-10 | The Chinese University Of Hong Kong | Method and an apparatus for decoupling multiple antennas in a compact antenna array |
| CN105633575A (zh) * | 2016-01-18 | 2016-06-01 | 深圳微迎智科技有限公司 | 天线互耦消除设备、方法以及无线通信装置 |
| CN105655709B (zh) * | 2016-01-29 | 2018-10-16 | 深圳飞特尔科技有限公司 | 干扰消除电路和天线阵列 |
| US10727579B2 (en) | 2018-08-03 | 2020-07-28 | The Chinese University Of Hong Kong | Device and method of reducing mutual coupling of two antennas by adding capacitors on ground |
| US10931014B2 (en) * | 2018-08-29 | 2021-02-23 | Samsung Electronics Co., Ltd. | High gain and large bandwidth antenna incorporating a built-in differential feeding scheme |
| CN112997359B (zh) * | 2018-12-17 | 2022-07-26 | 华为技术有限公司 | 一种天线阵列去耦结构及天线阵列 |
| CN113659310B (zh) * | 2020-05-12 | 2024-08-16 | 西安电子科技大学 | 天线装置和电子设备 |
| CN113659336B (zh) * | 2020-05-12 | 2024-06-07 | 西安电子科技大学 | 天线装置、电子设备及用于天线装置的去耦方法 |
| EP4148900A4 (en) | 2020-05-12 | 2023-11-08 | Xidian University | ANTENNA DEVICE AND ELECTRONIC DEVICE |
| CN113659307B (zh) * | 2020-05-12 | 2024-07-26 | 西安电子科技大学 | 天线装置和电子设备 |
| US11916522B2 (en) * | 2020-05-20 | 2024-02-27 | The Regents Of The University Of Colorado, A Body Corporate | Broadband diplexed or multiplexed power amplifier |
| CN115548676A (zh) * | 2022-08-10 | 2022-12-30 | 宁波隔空智能科技有限公司 | 微带天线组件、雷达收发组件及雷达系统 |
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- 2013-09-12 CN CN201380054076.6A patent/CN104756316A/zh active Pending
- 2013-09-12 US US14/433,848 patent/US20150255865A1/en not_active Abandoned
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| WO2011119460A1 (en) * | 2010-03-23 | 2011-09-29 | Rf Micro Devices, Inc. | Multiband simultaneous transmission and reception front end architecture |
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| US9293812B2 (en) | 2013-11-06 | 2016-03-22 | Delphi Technologies, Inc. | Radar antenna assembly |
| EP2942639A1 (en) * | 2014-05-06 | 2015-11-11 | Delphi Technologies, Inc. | Radar antenna assembly |
| CN111969336A (zh) * | 2014-05-06 | 2020-11-20 | 安波福技术有限公司 | 雷达天线组件 |
| CN111969336B (zh) * | 2014-05-06 | 2023-03-28 | 安波福技术有限公司 | 雷达天线组件 |
| CN113659311A (zh) * | 2020-05-12 | 2021-11-16 | 西安电子科技大学 | 天线装置和电子设备 |
| CN119695485A (zh) * | 2024-12-30 | 2025-03-25 | 联想(北京)有限公司 | 天线模组和电子设备 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5889425B2 (ja) | 2016-03-22 |
| CN104756316A (zh) | 2015-07-01 |
| JPWO2014061381A1 (ja) | 2016-09-05 |
| US20150255865A1 (en) | 2015-09-10 |
| DE112013005067T5 (de) | 2015-06-25 |
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