Communications: radio wave antennas – Antennas – With polarization filter or converter
Reexamination Certificate
2006-07-04
2006-07-04
Ho, Tan (Department: 2821)
Communications: radio wave antennas
Antennas
With polarization filter or converter
C343S7000MS, C343S909000
Reexamination Certificate
active
07071889
ABSTRACT:
DC inductive FSS technology is a printed slow wave structure usable for reduced size resonators in antenna and filter applications of wireless applications. It is a dispersive surface defined in terms of its parallel LC equivalent circuit that enhances the inductance and capacitance of the equivalent circuit to obtain a pole frequency as low as 300 MHz. The effective sheet impedance model has a resonant pole whose free-space wavelength can be greater than 10 times the FSS period. A conductor-backed DCL FSS can create a DC inductive artificial magnetic conductor (DCL AMC), high-impedance surface with resonant frequencies as low as 2 GHz. Lorentz poles introduced into the DCL FSS create multi-resonant DCL AMCs. Antennas fabricated from DCL FSS materials include single-band elements such as a bent-wire monopole on the DCL AMC and multi-band (dual and triple) shorted patches, similar to PIFAs with the patch/lid being a DCL FSS.
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Diaz Rodolfo E.
McKinzie, III William E.
Mendolia Gregory S.
Actiontec Electronics, Inc.
Brinks Hofer Gilson & Lione
Ho Tan
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