Communications: radio wave antennas – Antennas – Microstrip
Reexamination Certificate
2007-07-17
2007-07-17
Nguyen, Hoang (Department: 2821)
Communications: radio wave antennas
Antennas
Microstrip
C343S702000, C343S895000
Reexamination Certificate
active
10862864
ABSTRACT:
A dual band antenna includes a metal strip and a feeding leg. The metal strip formed on a substrate further comprises a first band portion and a second band portion, in which a tail of the first band portion is connected to the second band portion. The feeding leg extended from a head of the first band portion is led to connect with a signal processing circuit. The metal strip can be tuned to second frequency band signals, in which the first band portion is purposely tuned to first frequency band signals. Also, the second band portion has a function of adjusting frequencies of the second frequency band.
REFERENCES:
patent: 6204826 (2001-03-01), Rutkowski et al.
patent: 6795026 (2004-09-01), Chiu et al.
patent: 6987483 (2006-01-01), Tran
patent: 2003/0122722 (2003-07-01), Sugiyama et al.
patent: 2004/0095281 (2004-05-01), Poilasne et al.
Alemu Ephrem
Benq Corporation
Ladas and Parry LLP
Nguyen Hoang
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