Communications: radio wave antennas – Antennas – Microstrip
Reexamination Certificate
2005-10-17
2008-12-09
Wimer, Michael C (Department: 2821)
Communications: radio wave antennas
Antennas
Microstrip
Reexamination Certificate
active
07463197
ABSTRACT:
A multi-band antenna for multi-band radio frequency telecommunications. The multi-band antenna includes a conductive patch separated from a ground plane by a dielectric material. A slot pattern formed in the conductive patch defines a perimeter substantially surrounding two feed pins and arranged symmetrically about a center line. The slot pattern includes one or more inwardly extending arms projected along axes that pass between the two feed pins. The axes may be parallel to the center line. The slot pattern may be arranged using folded slots. In one embodiment, circular polarization is realized at GPS frequency by using one feed pin and linear or circular polarization is realized by using one or two feed pins for other bands. The feed pins may be controlled independently without a fixed phase and amplitude arrangement necessary to achieve a fixed polarization (linear, circular, or elliptical), which allows for adaptive pattern and polarization agility.
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Chaudhuri Sujeet K.
Rafi Gholamreza Zeinolabedin
Safavi-Naeini Safieddin
Tang Wai-Cheung
Cummings, P.C. Eugene M.
Mark IV Industries Corp.
Wimer Michael C
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