Waveguide antenna apparatus provided with rectangular...

Details Waveguide antenna apparatus provided with rectangular... Waveguide antenna apparatus provided with rectangular...

2005-02-01

2005-02-01

Phan, Tho (Department: 2821)

Communications: radio wave antennas

Antennas

Wave guide type

C343S786000

Reexamination Certificate

active

06850205

ABSTRACT:
A waveguide antenna apparatus is provided including a rectangular waveguide having one end short-circuited by a terminating conductor and another end opened. The rectangular waveguide includes a grounding conductor and a ceiling conductor opposed to each other, and includes two side surface conductors joining the grounding conductor with the ceiling conductor and being opposed to each other. An antenna element has one end and another end, where one end thereof is connected with a position in the ceiling conductor in a vicinity of opened another end of the rectangular waveguide, and another end thereof is connected with a feeding portion located in the grounding conductor. The ceiling conductor includes a removed portion on the side of opened another end of the rectangular waveguide. Then an electromagnetic wave of a fed radio signal is radiated from the removed portion and opened another end of the rectangular waveguide.

REFERENCES:
patent: 4086598 (1978-04-01), Bogner
patent: 4912482 (1990-03-01), Woloszczuk
patent: 5331332 (1994-07-01), West et al.
patent: 6275196 (2001-08-01), Bobier
patent: 6538618 (2003-03-01), Yamamoto et al.
patent: 6680712 (2004-01-01), Yamamoto et al.
patent: 20020044099 (2002-04-01), Yamamoto et al.
patent: 9-135115 (1997-05-01), None

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