Communications: radio wave antennas – Antennas – Microstrip
Reexamination Certificate
2005-10-11
2005-10-11
Ho, Tan (Department: 2821)
Communications: radio wave antennas
Antennas
Microstrip
C343S909000, C343S846000
Reexamination Certificate
active
06954177
ABSTRACT:
An antenna unit formed in the shape of a hollow box comprising (a) a substrate forming the front side of the antenna unit, (b) a first microstrip antenna array formed on the substrate, (c) a second microstrip antenna array formed on the substrate, (d) a ground plane forming the rear side of the antenna unit, and (e) a plurality of periodic filters formed on the ground plane. The periodic filters are formed by etching a series of circular patterns, or holes, through the ground plane. The periodic stop band filters provide for improved isolation between the microstrip antenna arrays, without the need for adding additional costly or space consuming components.
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Anderson Richard Alan
Channabasappa Eswarappa
Kolak Frank
Ho Tan
M/A-COM, Inc.
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