Partially reflective surface antenna

Details Partially reflective surface antenna Partially reflective surface antenna

2008-01-15

2008-01-15

Chen, Shih-Chao (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S725000, C343S844000

Reexamination Certificate

active

07319429

ABSTRACT:
The present invention relates to a partially reflective surface antenna and, more particularly, to a partially reflective surface antenna including a reflective board composed of arrays of microstrip antennas, and has advantages of low side lobe and high gain. It comprises: a substrate with an upper surface having a signal transmitting notch for transmitting and receiving a high frequency signal; a reflective board for partially reflecting the high frequency signal; and a plurality of supporting elements for supporting the reflective board on the substrate. The reflective board has a second antenna array and a first antenna array surrounded by the second antenna array, wherein the first and the second antenna array are composed of a plurality of first microstrip reflective units and a plurality of second microstrip reflective units, respectively. Besides, the distance between the first microstrip reflective units is smaller than the distance between the second microstrip reflective units.

REFERENCES:
patent: 5444453 (1995-08-01), Lalezari
patent: 6529166 (2003-03-01), Kanamaluru
patent: 7026995 (2006-04-01), Sreenivas et al.

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