Microstrip antenna having a plurality of broken loops

Details Microstrip antenna having a plurality of broken loops Microstrip antenna having a plurality of broken loops

1995-04-05

1997-07-08

Hajec, Donald T.

Communications: radio wave antennas

Antennas

Microstrip

343742, 343846, 343895, H01Q 138

Patent

active

056466331

ABSTRACT:
The microstrip antenna includes a conductive ground plane and a number of conductive broken loops which extend from a first end to an opposed second end. The first ends of each of the broken loops are connected to a feedline conductor for transmitting and receiving signals. In addition, the second end of each broken loop is spaced apart from the respective first end of the broken loop to define the broken loop. Further, a layer of dielectric material, such as a printed circuit board, can be disposed between the ground plane and a plurality of broken loops. Thus, by appropriately selecting the respective lengths of the broken loops, the frequency range over which the microstrip antenna transmits and receives signals can be tuned. In addition, the microstrip antenna is relatively thin so as to be disposed flush with the surface of a mounting platform within a relatively shallow cavity. In addition, the microstrip antenna can be shaped to conform with the complexly shaped mounting platform while still providing reception and transmission over a broadband of frequencies.

REFERENCES:
patent: 3019439 (1962-01-01), Reis et al.
patent: 3135960 (1964-06-01), Kaiser et al.
patent: 4518965 (1985-05-01), Hidaka
patent: 4647937 (1987-03-01), Hidaka et al.
patent: 4809008 (1989-02-01), Gunton
patent: 5198826 (1993-03-01), Ito
patent: 5220340 (1993-06-01), Shafai
patent: 5313216 (1994-05-01), Wang et al.
Wang and Tripp, Design Of Multioctave Spiral-Mode Microstrip Antennas, IEEEE Transactions On Antennas And Propagation, vol. 39, No. 3, Mar. 1991, pp. 332-335.

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