Antenna and receiver

Details Antenna and receiver Antenna and receiver

2007-05-11

2009-06-09

Nguyen, Hoang V (Department: 2821)

Communications: radio wave antennas

Antennas

Slot type

C343S846000

Reexamination Certificate

active

07545334

ABSTRACT:
It is an object of the present invention to provide an antenna capable of reducing a backside gain while keeping the sensitivity of overall antenna to a certain level. Particularly, in the case of an antenna subject to a circularly polarized wave, it is an object of the invention to provide an antenna capable of reducing the sensitivity of a left-handed circularly polarized wave more than ever before as well as keeping the sensitivity of a right-handed circularly polarized wave to a certain level. The antenna of the invention includes a plurality of ground conductors, a radiation conductor provided via a dielectric on a part of the above-mentioned ground conductor. The notch is formed on at least one of the above-mentioned ground conductors. The notch is formed outside of the area opposite to the above-mentioned radiation conductor.

REFERENCES:
patent: 5539420 (1996-07-01), Dusseux et al.
patent: 5661493 (1997-08-01), Uher et al.
patent: 6445354 (2002-09-01), Kunysz
patent: 6452560 (2002-09-01), Kunysz
patent: 2000-77930 (2000-03-01), None
patent: 2005-203873 (2005-07-01), None

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