Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Reexamination Certificate
2006-02-28
2006-02-28
Chen, Shih-Chao (Department: 2821)
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
C343S7000MS, C343S835000
Reexamination Certificate
active
07006051
ABSTRACT:
An antenna apparatus comprising bent dipoles and fed by a quarter-wave balun transformer with a single coaxial cable feed is disclosed. In this embodiment, the antenna elements are patterned onto a dielectric circuit board which is then mounted horizontally into a molded shell. The antenna is tuned by trimming the bent dipoles patterned on the circuit board.
REFERENCES:
patent: 6211840 (2001-04-01), Wood et al.
patent: 6249260 (2001-06-01), Holloway
El-Mahdawy Ahmed
Hestness Mark
Chen Shih-Chao
FRC Components Products Inc.
Whitham Curtis & Christofferson, P.C.
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