Shorted microstrip antenna with multiple ground planes

Details Shorted microstrip antenna with multiple ground planes Shorted microstrip antenna with multiple ground planes

1986-12-03

1988-12-13

Sikes, William L.

Communications: radio wave antennas

Antennas

Microstrip

343702, H01Q 138

Patent

active

047914238

ABSTRACT:
A low and broadband shorted microstrip antenna is disclosed which is mainly applicable to a mobile body in a mobile communication system. A first grounding conductive sheet which faces a radiating conductive sheet is provided at both ends thereof with a second and a third grounding conductive sheets which are perpendicular to the first grounding conductive sheet, whereby a beam tilt characteristic of the antenna is improved. The passive element and a conductive stub are disposed atop the grounding conductive sheet. The passive element and the conductive stub face the radiating conductive element and serve to improve the impedance matching parameter of the microstrip antenna.

REFERENCES:
patent: 4386357 (1983-05-01), Patton
patent: 4410891 (1983-10-01), Schaubert et al.
patent: 4575725 (1986-03-01), Tresselt
patent: 4644361 (1987-02-01), Yokoyama

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