Patch antenna having tuning means for improved performance

Details Patch antenna having tuning means for improved performance Patch antenna having tuning means for improved performance

1981-05-21

1983-05-31

Lieberman, Eli

Communications: radio wave antennas

Antennas

Microstrip

H01Q 138

Patent

active

043863574

ABSTRACT:
A patch antenna employing a matching stub for improved performance. The patch antenna comprises a conductive patch disposed closely over a ground plane, having a shorting pin shorting the conductive patch to the ground plane at a central point and a coaxial feed line attached to the conductive patch at a point between the shorting pin and the edge of the patch for conducting electromagnetic energy to or from the conductive patch. The matching stub comprises a conductive member extending at least partially between the ground plane and the conductive patch at a point located on the opposite side of the shorting pin from the feed line. Performance is further improved by leaving only a small portion of the inner conductor of the coaxial feed line uncovered by the outer conductor.

REFERENCES:
patent: 3680136 (1972-07-01), Collings
patent: 4053895 (1977-10-01), Malagisi

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