WO2004091034A1 - 導波管形偏分波器 - Google Patents
導波管形偏分波器 Download PDFInfo
- Publication number
- WO2004091034A1 WO2004091034A1 PCT/JP2004/004859 JP2004004859W WO2004091034A1 WO 2004091034 A1 WO2004091034 A1 WO 2004091034A1 JP 2004004859 W JP2004004859 W JP 2004004859W WO 2004091034 A1 WO2004091034 A1 WO 2004091034A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- radio wave
- waveguide
- main waveguide
- square
- square main
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/16—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion
- H01P1/161—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion sustaining two independent orthogonal modes, e.g. orthomode transducer
Definitions
- the present invention relates to a waveguide type polarization splitter used in, for example, a VHF band, a UHF band, a microwave band, a millimeter wave band, and the like.
- a thin metal plate having an arc-shaped notch symmetrically provided is provided at a branch portion of the main waveguide.
- the fundamental mode of the horizontally polarized radio wave H input from the input terminal P1 is branched at right angles and symmetrically with respect to the direction of the tube axis of the leading waveguide, and output. Output from terminals P 3 and P 4.
- the fundamental mode of the vertically polarized radio wave V input from the input terminal P1 is output from the output terminal P2 opposite to the input terminal P1 (for example, see Patent Document 1).
- Patent Document 1 Japanese Patent Application Laid-Open No. H11-3330801 (Pages 4 to 6, Figure 1)
- the conventional waveguide type polarizer / demultiplexer is configured as described above, a thin metal plate is inserted into a branch portion of the leading waveguide. For this reason, the length of the leading waveguide in the tube axis direction becomes longer, and there is a problem that it is difficult to reduce the size and the shorter axis in the tube axis direction.
- the frequency of the guide wavelength generally changes drastically, and the frequency change of the impedance discontinuity at the branch of the leading waveguide also sharply. Because there was also a problem that it was difficult to suppress the deterioration of the reflection characteristics of both polarized waves in the frequency band near the cutoff frequency.
- the present invention has been made to solve the above-described problems, and provides a waveguide type polarization splitter that can achieve downsizing and a short axis and high performance.
- the purpose is to: Disclosure of the invention
- the waveguide type polarization splitter propagates one radio wave of the horizontal polarization branched by the radio wave branching means, propagates the other radio wave of the horizontal polarization, and combines the two radio waves.
- a first radio wave propagation unit that separates and outputs a fundamental mode radio wave and a higher mode radio wave, and propagates one of the vertically polarized waves branched by the radio wave branching unit and the other of the vertically polarized waves.
- a second radio wave propagation unit that combines the two radio waves and separates and outputs the fundamental mode radio wave and the higher mode radio wave.
- FIG. 1 is a plan view showing a waveguide type polarization splitter according to Embodiment 1 of the present invention.
- FIG. 2 is a side view showing a waveguide type polarization splitter according to Embodiment 1 of the present invention.
- FIG. 3 is a side view of a branch portion showing an electric field distribution in a fundamental mode when a horizontally polarized wave is input.
- FIG. 4 is a side view of a branch portion showing an electric field distribution when a higher-order mode occurs.
- Fig. 5 shows a four-branch circuit showing the electric field distribution in the fundamental mode at the time of horizontal polarization input. It is a perspective view of a part.
- FIG. 6 is a perspective view of a four-branch circuit showing an electric field distribution when a higher-order mode occurs.
- FIG. 7 is a side view showing a waveguide type polarization splitter according to Embodiment 2 of the present invention.
- FIG. 1 is a plan view showing a waveguide type polarization splitter according to Embodiment 1 of the present invention
- FIG. 2 is a side view showing a waveguide type polarization splitter according to Embodiment 1 of the present invention.
- FIG. 3 is a side view of the branch section showing the electric field distribution of the fundamental mode when horizontal polarization is input.
- Fig. 4 is a side view of the branch section showing the electric field distribution when a higher-order mode is generated.
- FIG. 6 is a perspective view of a four-branch circuit part showing the electric field distribution of the fundamental mode, and FIG. 6 is a perspective view of the four-branch circuit part showing the electric field distribution when a higher-order mode occurs.
- a circular main waveguide 1 transmits a circularly polarized signal (a vertically polarized wave, a horizontally polarized wave) input from an input / output terminal P1.
- the square main waveguide (first square main waveguide) 2 transmits the circularly polarized signal transmitted by the circular main waveguide 1.
- Square main waveguide (second square main waveguide) 3 is narrower than the aperture diameter of square main waveguide 2, and horizontally polarized radio waves of circularly polarized signals transmitted by square main waveguide 2 It diverges in the direction (first horizontal symmetry direction), and diverges vertically polarized radio waves in the V direction (second horizontal symmetry direction).
- the opening diameter of the square main waveguide 3 is square. Although the opening diameter of the square main waveguide 2 is smaller than the opening diameter of the square main waveguide 2 and the opening diameter of the square main waveguide 2 is smaller than the diameter of the circular main waveguide 1, The opening diameter of the square main waveguide 2 may be wider than the diameter of the circular main waveguide 1, and may be wider than the opening diameter of the waveguide 2.
- the short-circuiting plate 4 closes one terminal of the square main waveguide 3, and the quadrangular pyramid-shaped metal block 5 is installed on the short-circuiting plate 4 to split the vertically polarized wave and the horizontally polarized wave.
- the circular main waveguide 1, the square main waveguides 2 and 3, the short-circuit plate 4, and the square pyramid-shaped metal block 5 constitute a radio wave branching means.
- the rectangular branch waveguides 6 a to 6 d are connected at right angles to the four tube axes of the square main waveguide 3.
- the rectangular waveguide multi-stage transformers 7a to 7d are connected to the rectangular branch waveguides 6a to 6d, respectively, and the tube axis is bent in the H plane, and the opening diameter is a rectangular branch. The transformer becomes smaller as the distance from the waveguides 6a to 6d increases.
- the rectangular waveguide quadrant circuit 8 combines the horizontally polarized radio wave transmitted by the rectangular waveguide multi-stage transformer 7a and the horizontally polarized radio wave transmitted by the rectangular waveguide multi-stage transformer 7b. Then, the fundamental mode radio wave of the combined signal is output to the input / output terminal P2, and the higher mode radio wave is output to the input / output terminal P4. The end of the input / output terminal P4 is closed by the short-circuit plate 9, and is made of a lossy dielectric.
- the rectangular waveguide four-branch circuit 10 converts the vertically polarized radio wave transmitted by the rectangular waveguide multi-stage transformer 7c and the vertically polarized radio wave transmitted by the rectangular waveguide multi-stage transformer 7d.
- the signals are combined, the radio wave of the basic mode in the synthesized signal is output to the input / output terminal P3, and the radio wave of the higher mode is output to the input / output terminal P5.
- the end of the input / output terminal P5 is closed by the short-circuit plate 11, and is made of a lossy dielectric.
- the first radio wave propagation means is composed of the four branch circuits 8 and the rectangular waveguides 6 c and 6 d, the rectangular waveguide multistage transformers 7 c and 7 d, and the four rectangular waveguides.
- the circuit 10 constitutes second radio wave propagation means.
- the fundamental mode (TE01 mode) of the horizontally polarized radio wave H is input from the input / output terminal P1, the circular main waveguide 1, the square main waveguide. Transmit H.
- the horizontally polarized radio wave H is designed so that the distance between the upper and lower side walls of the rectangular branch waveguides 6c and 6d is less than half of the free space wavelength in the used frequency band. Therefore, the light is not branched in the directions of the rectangular branch waveguides 6 c and 6 d (the V direction in the figure), and the directions of the rectangular branch waveguides 6 a and 6 b (the H direction in the figure) ).
- the two rectangular waveguides E having equivalently excellent reflection characteristics are provided. Evening—Electric field distribution with bends placed symmetrically. Therefore, the horizontally polarized radio wave H is efficiently output in the directions of the rectangular branch waveguides 6a and 6b while suppressing leakage to the rectangular branch waveguides 6c and 6d.
- connection between the circular main waveguide 1 and the square main waveguide 2, the square main waveguide 2, and the connection between the square main waveguide 2 and the square main waveguide 3 are defined as a circular-square waveguide multi-stage transformer.
- the cutoff frequency of the fundamental mode of radio wave H Frequency The reflection loss is large in several bands, and the reflection loss can be extremely reduced in a frequency band somewhat higher than the cutoff frequency.
- the rectangular waveguide multi-stage transformers 7a and 7b have curved tube axes, a plurality of steps formed on the upper wall surface, and the distance between the steps is the guide wavelength with respect to the waveguide center line. Therefore, the radio wave H separated into the rectangular branch waveguides 6 a and 6 b is combined by the rectangular waveguide 4 branch circuit 8 without deteriorating the reflection characteristics. It is efficiently output from the input / output terminal P2 (see Fig. 5).
- the fundamental mode (TE 10 mode) of the vertically polarized radio wave V is input from the input / output terminal P 1
- the circular main waveguide 1 and the square main waveguides 2 and 3 transmit the vertically polarized radio wave V. Is transmitted.
- the vertically polarized radio wave V is designed so that the distance between the upper and lower side walls of the rectangular branch waveguides 6a and 6b is less than half of the free space wavelength in the frequency band used, so that their blocking effect is reduced. Therefore, the light is not branched in the directions of the rectangular branch waveguides 6 a and 6 b (the H direction in the figure), and the directions of the rectangular branch waveguides 6 c and 6 d (the V direction in the figure) ).
- the direction of the electric field is along the square pyramid-shaped metal block 5 and the short-circuit plate 4. Since it can be changed, it is equivalent to the reflection characteristic 1; two rectangular waveguides that are excellent in life. Therefore, the vertically polarized radio wave V is efficiently output in the directions of the rectangular branch waveguides 6c and 6d while suppressing leakage to the rectangular branch waveguides 6a and 6b.
- connection between the circular main waveguide 1 and the square main waveguide 2, the square main waveguide 2, and the connection between the square main waveguide 2 and the square main waveguide 3 are referred to as a circular rectangular waveguide multi-stage transformer.
- the cut-off frequency of the fundamental mode of the radio wave V is obtained.
- the return loss is large in this frequency band, and the return loss can be made very small in the frequency band somewhat higher than the cutoff frequency.
- the reflection characteristic of the above-mentioned branch portion is similar to the reflection characteristic of the above-mentioned branch portion, and the above-mentioned position is where the reflection wave from the branch portion and the reflection wave from the above-mentioned circular-rectangular waveguide multistage transformer cancel each other near the cutoff frequency band.
- the reflection characteristics in the frequency band near the cutoff frequency are not deteriorated without deteriorating the good reflection characteristics in the frequency band somewhat higher than the cutoff frequency of the fundamental mode of the radio wave V. Can be suppressed.
- the rectangular waveguide multi-stage transformers 7c and 7d have curved tube axes, provided a plurality of steps on the lower wall surface, and set the interval between the steps to the waveguide center line with respect to the waveguide center line. Since the wavelength is about 1/4 of the wavelength, the radio wave V separated into the rectangular branch waveguides 6c and 6d is eventually combined by the rectangular waveguide four-branch circuit 10, thereby deteriorating the reflection characteristics. The signal is output efficiently from the input / output terminal P3 (see Fig. 5).
- the radio waves of the higher-order mode synthesized by the rectangular waveguide four-branch circuits 8 and 10 are transmitted to the input / output terminal P 4 , P5.
- one radio wave of the horizontal polarization branched by the radio wave branching means is propagated, and the other radio wave of the horizontal polarization is propagated.
- Embodiment 2 since the configuration does not use a metal thin plate or a metal post, the processing difficulty can be reduced, and as a result, the effect of reducing cost can be obtained.
- Embodiment 2 since the configuration does not use a metal thin plate or a metal post, the processing difficulty can be reduced, and as a result, the effect of reducing cost can be obtained.
- the circular main waveguide 1 is connected on the square main waveguide 2.
- the circular main waveguide 2 is connected on the square main waveguide 2.
- the waveguide 1 need not be connected, and the same effects as in the first embodiment can be obtained.
- the opening diameter of the square main waveguide 3 is smaller than the opening diameter of the square main waveguide 2, but the opening diameter of the square main waveguide 3 is smaller than that of the square main waveguide 2. It may be wider than the caliber.
- the waveguide type polarization splitter according to the present invention is used for a waveguide type polarization splitter used in a VHF band, a UHF band, a microwave band and a millimeter wave band. Can be.
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- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04725537A EP1612880B1 (en) | 2003-04-04 | 2004-04-02 | Waveguide branching filter/polarizer |
DE602004021789T DE602004021789D1 (de) | 2003-04-04 | 2004-04-02 | Wellenleiter-verzweigungsfilter/-polarisierer |
US10/517,838 US7330088B2 (en) | 2003-04-04 | 2004-04-02 | Waveguide orthomode transducer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003101798A JP4060228B2 (ja) | 2003-04-04 | 2003-04-04 | 導波管形偏分波器 |
JP2003-101798 | 2003-04-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004091034A1 true WO2004091034A1 (ja) | 2004-10-21 |
Family
ID=33156778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/004859 WO2004091034A1 (ja) | 2003-04-04 | 2004-04-02 | 導波管形偏分波器 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7330088B2 (ja) |
EP (1) | EP1612880B1 (ja) |
JP (1) | JP4060228B2 (ja) |
DE (1) | DE602004021789D1 (ja) |
WO (1) | WO2004091034A1 (ja) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4011511B2 (ja) * | 2003-04-04 | 2007-11-21 | 三菱電機株式会社 | アンテナ装置 |
US8081046B2 (en) * | 2006-03-10 | 2011-12-20 | Optim Microwave, Inc. | Ortho-mode transducer with opposing branch waveguides |
US7397323B2 (en) * | 2006-07-12 | 2008-07-08 | Wide Sky Technology, Inc. | Orthomode transducer |
EP2214251B1 (en) | 2009-02-02 | 2012-01-18 | Centre National D'etudes Spatiales | A waveguide orthomode transducer |
CA2801948C (en) | 2010-06-08 | 2017-08-08 | National Research Council Of Canada | Orthomode transducer |
KR101019670B1 (ko) | 2010-08-13 | 2011-03-07 | 엘아이지넥스원 주식회사 | 도파관 변환기 |
US8653906B2 (en) | 2011-06-01 | 2014-02-18 | Optim Microwave, Inc. | Opposed port ortho-mode transducer with ridged branch waveguide |
US8994474B2 (en) | 2012-04-23 | 2015-03-31 | Optim Microwave, Inc. | Ortho-mode transducer with wide bandwidth branch port |
US20130314172A1 (en) * | 2012-05-25 | 2013-11-28 | Government Of The United States, As Represented By The Secretary Of The Air Force | Broadband Magic Tee |
US9203128B2 (en) | 2012-10-16 | 2015-12-01 | Honeywell International Inc. | Compact twist for connecting orthogonal waveguides |
US9406987B2 (en) | 2013-07-23 | 2016-08-02 | Honeywell International Inc. | Twist for connecting orthogonal waveguides in a single housing structure |
DE102014000438B4 (de) * | 2014-01-17 | 2018-08-09 | Airbus Defence and Space GmbH | Breitband Signalverzweigung mit Summensignalabsorption (BSmS) |
JP7316836B2 (ja) | 2019-05-15 | 2023-07-28 | 日本無線株式会社 | 導波管型偏分波器 |
JP7252054B2 (ja) * | 2019-05-15 | 2023-04-04 | 日本無線株式会社 | ターンスタイル型偏分波器 |
Citations (4)
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JPS54115842U (ja) * | 1978-02-01 | 1979-08-14 | ||
JPS58111403A (ja) * | 1981-12-17 | 1983-07-02 | バイタリンク・コミユニケイシヨンズ・コ−ポレイシヨン | 2重偏波及び2重周波信号のための導波管装置及び方法 |
JPS601902A (ja) * | 1983-06-16 | 1985-01-08 | Nec Corp | 2周波数帯共用偏分波器 |
JPS62181003U (ja) * | 1986-05-08 | 1987-11-17 |
Family Cites Families (16)
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JPS6057721B2 (ja) | 1977-07-28 | 1985-12-17 | 三菱電機株式会社 | 分波装置 |
JPS54115842A (en) | 1978-02-28 | 1979-09-08 | Shimano Industrial Co | Derailer for bicycle |
JPS5528676A (en) | 1978-08-22 | 1980-02-29 | Mitsubishi Electric Corp | Branch unit |
DE3020514A1 (de) | 1980-05-30 | 1981-12-10 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Antennenspeisesystem fuer eine nachfuehrbare antenne |
US4385253A (en) * | 1981-08-21 | 1983-05-24 | General Electric Company | Commutator cone |
JPS58205304A (ja) | 1982-05-25 | 1983-11-30 | Nippon Telegr & Teleph Corp <Ntt> | 偏分波器 |
US4504805A (en) * | 1982-06-04 | 1985-03-12 | Andrew Corporation | Multi-port combiner for multi-frequency microwave signals |
JPS6030606U (ja) | 1983-08-08 | 1985-03-01 | 日本電信電話株式会社 | 偏分波器 |
JPS60176303A (ja) | 1984-02-22 | 1985-09-10 | Mitsubishi Electric Corp | 偏分波器 |
JPS6152002A (ja) | 1984-08-20 | 1986-03-14 | Mitsubishi Electric Corp | マイクロ波給電回路 |
JP3191972B2 (ja) * | 1992-01-31 | 2001-07-23 | キヤノン株式会社 | 半導体基板の作製方法及び半導体基板 |
JP4076594B2 (ja) | 1996-07-12 | 2008-04-16 | 三菱電機株式会社 | 導波管形分波器及び偏分波器 |
FR2763749B1 (fr) | 1997-05-21 | 1999-07-23 | Alsthom Cge Alcatel | Source d'antenne pour l'emission et la reception d'ondes hyperfrequences polarisees |
JP3673080B2 (ja) | 1998-05-20 | 2005-07-20 | 三菱電機株式会社 | 導波管形偏分波器 |
US6087908A (en) * | 1998-09-11 | 2000-07-11 | Channel Master Llc | Planar ortho-mode transducer |
DE10032172A1 (de) * | 2000-07-01 | 2002-01-17 | Marconi Comm Gmbh | Übergang für orthogonal orientierte Hohlleiter |
-
2003
- 2003-04-04 JP JP2003101798A patent/JP4060228B2/ja not_active Expired - Lifetime
-
2004
- 2004-04-02 WO PCT/JP2004/004859 patent/WO2004091034A1/ja active Application Filing
- 2004-04-02 DE DE602004021789T patent/DE602004021789D1/de not_active Expired - Lifetime
- 2004-04-02 EP EP04725537A patent/EP1612880B1/en not_active Expired - Fee Related
- 2004-04-02 US US10/517,838 patent/US7330088B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS54115842U (ja) * | 1978-02-01 | 1979-08-14 | ||
JPS58111403A (ja) * | 1981-12-17 | 1983-07-02 | バイタリンク・コミユニケイシヨンズ・コ−ポレイシヨン | 2重偏波及び2重周波信号のための導波管装置及び方法 |
JPS601902A (ja) * | 1983-06-16 | 1985-01-08 | Nec Corp | 2周波数帯共用偏分波器 |
JPS62181003U (ja) * | 1986-05-08 | 1987-11-17 |
Non-Patent Citations (1)
Title |
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See also references of EP1612880A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP1612880A4 (en) | 2006-05-17 |
JP2004312271A (ja) | 2004-11-04 |
US7330088B2 (en) | 2008-02-12 |
JP4060228B2 (ja) | 2008-03-12 |
EP1612880B1 (en) | 2009-07-01 |
EP1612880A1 (en) | 2006-01-04 |
DE602004021789D1 (de) | 2009-08-13 |
US20050200430A1 (en) | 2005-09-15 |
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