Extended bandwidth microstrip antenna

Details Extended bandwidth microstrip antenna Extended bandwidth microstrip antenna

1984-06-06

1986-08-12

Lieberman, Eli

Communications: radio wave antennas

Antennas

Microstrip

343830, H01Q 138

Patent

active

046059334

ABSTRACT:
A microstrip antenna having approximately an octave bandwidth comprises a planar radiating element disposed approximately coplanar with and in front of an upper ground plane and spaced above a lower ground plane at a distance equal to approximately one-tenth wavelength at the lowest operating frequency (one-quarter wavelength at the upper operating frequency). A thin dielectric layer is disposed on top of the upper ground plane which is coupled to the lower ground plane. The antenna, which is linearly polarized, is fed from the rear by a launcher that is approximately coplanar with the radiating element and mounted above the dielectric layer. Impedance matching means are provided for improved performance.

REFERENCES:
patent: 3823404 (1974-07-01), Buie
patent: 4051477 (1977-09-01), Murphy et al.
patent: 4063246 (1977-12-01), Greiser
patent: 4074270 (1978-02-01), Kaloi
patent: 4083046 (1978-04-01), Kaloi
patent: 4089003 (1978-05-01), Conroy
patent: 4160976 (1979-07-01), Conroy
patent: 4197544 (1980-04-01), Kaloi
patent: 4460894 (1984-07-01), Robin et al.
Carver et al. "Microstrip Antenna Technology", IEEE Trans., vol. AP-29, No. , Jan. 1981, pp. 2-24.
Takeichi et al., "Flush Mounted Antennas for Rockets", Mitsubishi Denki Lab Reports, Japan, vol. 11, No. 1/2, Apr. 1970, pp. 51-62.

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