Communications: radio wave antennas – Antennas – Microstrip
Reexamination Certificate
2007-05-08
2007-05-08
Nguyen, Hoang V. (Department: 2821)
Communications: radio wave antennas
Antennas
Microstrip
C343S850000
Reexamination Certificate
active
11168391
ABSTRACT:
A bi-frequency symmetrical patch antenna includes two bi-frequency symmetrical radiation units, each having a first band radiation section and two second band radiation sections, to radiate a feed-in signal in a selected direction. Further, the antenna has a power distribution unit, to evenly distribute the feed-in power, corresponding to the feed-in signal, to each bi-frequency symmetrical radiation unit. The power distribution unit has two side arms connecting respectively to each bi-frequency symmetrical radiation unit to increase the bandwidth range of the bi-frequency antenna.
REFERENCES:
patent: 3887925 (1975-06-01), Ranghelli et al.
patent: 6859176 (2005-02-01), Choi
patent: 2001/0007446 (2001-07-01), Amano
Cheng Wei-Tong
Song Jia-Jiu
Birch Stewart Kolasch & Birch, LLP.
Nguyen Hoang V.
Smartant Telecom Co., Ltd.
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