Claims
- 1. A multibeam antenna comprising:
- a dielectric substrate; and
- a plurality of transmitting/receiving channels for transmitting high-frequency signals and receiving echo signals, said transmitting/receiving channels being mounted on said dielectric substrate and comprising a first group of planar array antenna elements acting as a transmitting only primary radiator and a second group of planar array antenna elements acting as a receiving only primary radiator, said first group of planar array antenna elements and said second group of planar array antenna elements being disposed in opposite relation to each other on said dielectric substrate to reduce interference between the first and second groups of antenna elements.
- 2. A multibeam antenna according to claim 1, wherein said first group of planar array antenna elements and said second group of planar array antenna elements are disposed in interdigitating relation to each other on said dielectric substrate.
- 3. A multibeam antenna according to claim 1, further comprising an electromagnetic shield partition disposed on said dielectric substrate, said first group of planar array antenna elements and said second group of planar array antenna elements being separated from each other by said electromagnetic shield partition disposed therebetween.
Priority Claims (2)
Number |
Date |
Country |
Kind |
8-135903 |
May 1996 |
JPX |
|
8-135904 |
May 1996 |
JPX |
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Parent Case Info
This is a divisional of application Ser. No. 08/847,453 filed Apr. 24, 1997 now U.S. Pat. No. 5,933,109.
US Referenced Citations (22)
Foreign Referenced Citations (1)
Number |
Date |
Country |
0 531 877 A1 |
Mar 1993 |
EPX |
Non-Patent Literature Citations (1)
Entry |
Microstrip Patch Array with Multiple Beams, School of Electrical Engineering & Science, Royal Military College of Science, Swindon, U.K.; Authors: P.S. Hall and S.J. Vetterlein,. |
Divisions (1)
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Number |
Date |
Country |
Parent |
847453 |
Apr 1997 |
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