Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Reexamination Certificate
2007-03-27
2007-03-27
Dinh, Trinh Vo (Department: 2821)
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
C343S7000MS, C343S829000
Reexamination Certificate
active
10718919
ABSTRACT:
A dual polarized three-sector base station antenna with variable beam tilt in each sector. The invention advantageously provides a variable phase shifter with very small lateral dimensions which significantly reduces the diameter of a three-sector antenna. The feed network is located on both sides of the antenna ground plane, and the combination of the cable, microstrip and airstrip lines further reduces the lateral size of the antenna. Metal rings on the radome and double-bended ground plane are providing antenna with better cross-polarization and port-to-port isolation.
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Ai Xiangyang
Teillet Anthony
Timofeev Igor
Andrew Corporation
Dinh Trinh Vo
Jackson & Walker, LLP
Klinger Robert C.
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