Wideband circularly polarized single layer compact...

Details Wideband circularly polarized single layer compact... Wideband circularly polarized single layer compact...

2006-02-28

2006-02-28

Chen, Shih-Chao (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S785000, C343S846000

Reexamination Certificate

active

07006043

ABSTRACT:
An electrically small wideband circularly polarized single layer compact microstrip antenna that permits a substantial reduction in antenna size is provided, by stacking a semicircular radiating arch on a dielectric substrate and a conductive ground plane that permits both a considerably reduced antenna length and significantly high efficiency antenna performance. The radiating arch is composed from a group of arc-shaped segments that are each separated by a gap, with one segment having an opening allowing a connector center probe to protrude upwards. In the preferred embodiment, the arc-shaped segments are arranged into a semicircle on the top surface of the dielectric substrate. Other embodiments include an array antenna and a method for decreasing a wideband circularly polarized compact microstrip antenna with a given length, AL.

REFERENCES:
patent: 5448252 (1995-09-01), Ali et al.
patent: 6005520 (1999-12-01), Nalbandian et al.
patent: 6285325 (2001-09-01), Nalbandian et al.
patent: 6839030 (2005-01-01), Noujeim
patent: 2004/0227668 (2004-11-01), Sievenpiper

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