Communications: radio wave antennas – Antennas – Switching between antennas and lines
Reexamination Certificate
2008-03-07
2009-11-17
Nguyen, Hoang V (Department: 2821)
Communications: radio wave antennas
Antennas
Switching between antennas and lines
C343S833000, C343S834000
Reexamination Certificate
active
07619582
ABSTRACT:
A printed monopole smart antenna is provided. The smart antenna includes a monopole antenna having a plane for receiving and transmitting a signal, two conductors for directing and/or reflecting the signal to the monopole antenna respectively, and a circuit device electrically connected between the first and second conductors, for selectively switching the first and second conductors to determine an operation mode of the smart antenna. The smart antenna further has at least a groove in the ground for concentrating the current distribution and solving the influence of the antenna gain to the ground size. The sequence of the antenna pattern of the smart antenna is randomly arranged, depending on user's situation. When a plurality of printed monopole smart antennas are disposed on different directions of the WLAN AP/router, the omnidirectional radiation pattern will be obtained and the antenna gain will be increased.
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European Search Report, dated Jan. 13, 2009, European Appln. No. EP08004619.
Chung Shyh-Jong
Liu Yen-Chih
Delta Networks, Inc.
Nguyen Hoang V
Volpe and Koenig P.C.
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