Communications: radio wave antennas – Antennas – Microstrip
Reexamination Certificate
2007-09-27
2009-02-03
Dinh, Trinh V (Department: 2821)
Communications: radio wave antennas
Antennas
Microstrip
Reexamination Certificate
active
07486239
ABSTRACT:
A dual polarization planar antenna comprising a first layer comprising a first patch, a second layer beneath the first layer comprising a first feed line for coupling a first signal to the first patch and a second feed line for coupling a second signal to the first patch such that the first patch radiates a field that has two different polarizations, and a third layer comprising first and second coupling discs electrically connected to the first feed line and third and fourth coupling discs electrically connected to the second feed line, wherein the first and second discs are electrically coupled to each other by a first half wavelength conductor and the third and fourth discs are electrically coupled the each other by a second half wavelength conductor, the first and second half wavelength conductors not being disposed in the second layer.
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Kin-Lu Wong and Tzung-Wern Chiou, Finite Ground Plane Effects on Broad-Band Dual Polarized Patch Antenna Properties, IEEE Transactions on Antennas and Propagation, vol. 51, No. 4, Apr. 2003, pp. 903-904.
Dinh Trinh V
Duong Dieu Hien T
Naccarella Theodore
Saul Ewing LLP
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