Microstrip antenna with circular ring

Details Microstrip antenna with circular ring Microstrip antenna with circular ring

1983-09-19

1985-11-19

Lieberman, Eli

Communications: radio wave antennas

Antennas

Microstrip

343769, H01Q 138, H01Q 1310

Patent

active

045545499

ABSTRACT:
A radar antenna is shown in a first embodiment to have a ground plane and a feed line on opposite sides of a dielectric sheet and a ring-shaped antenna element on another dielectric sheet to form a microstrip assembly wherein such antenna element is capacitively coupled to the feed line. In a second embodiment the radar antenna has a parasitic antenna element on still another dielectric sheet, such parasitic antenna element being in register with the ring-shaped antenna element.

REFERENCES:
patent: 3665480 (1972-05-01), Fassett
patent: 4054874 (1977-10-01), Oltman, Jr.
"Circular Ring Microstrip Antenna Elements," IEEE-APS International Symposium Digest, pp. 605-608, 1980, by J. W. Mink.
"Characteristics of Microstrip Ring Antennas," IEEE-APS Symposium Digest, vol. I, pp. 27-30, 1981 by I. J. Bahl and S. S. Stuckly.
"Resonant Frequency of a Circular Disc, Printed-Circuit Antenna," vol. AP-25, IEEE Transactions, pp. 595-596, Jul. 1977, by L. C. Shen, S. A. Long, M. R. Allerding & M. D. Walton.
"Conformal Microstrip Antennas and Microstrip Phased Arrays," vol. AP-22, IEEE Transactions, pp. 74-78, Jan. 1974, by R. E. Munson.

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