Planar antenna with matched impedance and/or polarization

Details Planar antenna with matched impedance and/or polarization Planar antenna with matched impedance and/or polarization

2005-11-28

2008-09-02

Wimer, Michael C (Department: 2821)

Communications: radio wave antennas

Antennas

Slot type

C343S767000

Reexamination Certificate

active

07420518

ABSTRACT:
The present invention relates to a planar antenna carried by a substrate comprising a slot in the form of a closed curve dimensioned to operate at a given frequency, supplied by a feeder line intersecting the slot at a point known as an excitation point, characterized in that at least two short circuits in parallel on the slot are positioned with respect to the excitation point so as to match the impedance to the excitation point and/or the polarization of the antenna.

REFERENCES:
patent: 2977595 (1961-03-01), Zisler et al.
patent: 7227507 (2007-06-01), Minard et al.
patent: 1 367 673 (2003-12-01), None
patent: 1 546 571 (1979-05-01), None
patent: 1 775 757 (1992-11-01), None
Japan Abstract 05267923; published Oct. 15, 1993; Kokusai Kagaku Shinko Zaldan; vol. 16, No. 038.
Dual-Loop Slot Antenna With Simple Feed; Stevenage, Herts; Electronics Letters; pp. 1218-1219; vol. 25, No. 18; Aug. 31, 1989.
Search Report dated May 11, 2005.

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