JPS5496389A - Radar device - Google Patents
Radar deviceInfo
- Publication number
- JPS5496389A JPS5496389A JP346678A JP346678A JPS5496389A JP S5496389 A JPS5496389 A JP S5496389A JP 346678 A JP346678 A JP 346678A JP 346678 A JP346678 A JP 346678A JP S5496389 A JPS5496389 A JP S5496389A
- Authority
- JP
- Japan
- Prior art keywords
- circular polarized
- signal
- polarized wave
- antenna
- slot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
Landscapes
- Waveguide Aerials (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
PURPOSE:To decrease the number of the component parts as well as to prevent the reduction of the transmission output and deterioration of the noise exponent at the reception time by securing the function of the duplexer circuit to isolate the transmission signal from the reception signal via the circular polarized wave slot antenna. CONSTITUTION:When the microwave signal enters feeder terminal 131 of one side of antenna 13 from transmitter 11, field EA1 and EB1 of nearly same amplitude are generated with vertical crossing to slot A1 and B1 featuring an angle of 90 deg.C to each other. Then the right-turned circular polarized wave's electromagnetic wave is radiated form slot pairs A1 and B1. The above electromagnetic wave hits the metal substance and is then reflected in the form of the left-turned circular polarized wave to then return to antenna 13. In this case, the similar field EA1 and EB1 are generated from slot pairs A1 and B1 with the phase of EA1 advance more than EB1 by 90 deg.C because of the left-turned circular polarized wave. As a result, the signal on strip line conductor 134 advances in the direction of feeder terminal 132 to be led to receiver 12 in the form of the reception signal. In this way, the transmission signal can be isolated from the reception signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP346678A JPS5496389A (en) | 1978-01-17 | 1978-01-17 | Radar device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP346678A JPS5496389A (en) | 1978-01-17 | 1978-01-17 | Radar device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5496389A true JPS5496389A (en) | 1979-07-30 |
Family
ID=11558096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP346678A Pending JPS5496389A (en) | 1978-01-17 | 1978-01-17 | Radar device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5496389A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997033342A1 (en) * | 1996-03-08 | 1997-09-12 | Nippon Steel Corporation | Planar array antenna |
| JPH1056321A (en) * | 1996-08-09 | 1998-02-24 | Nippon Telegr & Teleph Corp <Ntt> | Antenna system |
| WO2009084050A1 (en) | 2007-12-28 | 2009-07-09 | Selex Communications S.P.A. | Slot antenna and method for operating the same |
| JP2020148757A (en) * | 2019-03-11 | 2020-09-17 | パナソニックＩｐマネジメント株式会社 | Radar device and vehicle |
-
1978
- 1978-01-17 JP JP346678A patent/JPS5496389A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997033342A1 (en) * | 1996-03-08 | 1997-09-12 | Nippon Steel Corporation | Planar array antenna |
| JPH1056321A (en) * | 1996-08-09 | 1998-02-24 | Nippon Telegr & Teleph Corp <Ntt> | Antenna system |
| WO2009084050A1 (en) | 2007-12-28 | 2009-07-09 | Selex Communications S.P.A. | Slot antenna and method for operating the same |
| JP2020148757A (en) * | 2019-03-11 | 2020-09-17 | パナソニックＩｐマネジメント株式会社 | Radar device and vehicle |
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