Bilayer microstrip reflector antenna

Details Bilayer microstrip reflector antenna Bilayer microstrip reflector antenna

2005-03-01

2005-03-01

Wimer, Michael C. (Department: 2828)

Communications: radio wave antennas

Antennas

Microstrip

C343S754000, C343S755000

Reexamination Certificate

active

06861987

ABSTRACT:
A bilayer microstrip reflector antenna is disclosed to include a first dielectric layer, the first dielectric layer having antenna units and phase-delay circuit units overlapped on antenna units, and a second dielectric layer abutting against the first dielectric layer. A better gain-bandwidth is obtained by adjusting the overlapping distance of the antenna units and phase-delay circuit units, side length of antenna units and the dielectric constant and thickness of the two dielectric layers. Surface wave phenomenon is reduced by means of selecting a relatively lower dielectric constant. A satisfactory grounding effect is obtained to reduce radiation from phase-delay circuit units by lowering the second dielectric layer toward the ground.

REFERENCES:
patent: 4684952 (1987-08-01), Munson et al.
patent: 6441787 (2002-08-01), Richards et al.

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