Notched/diagonally fed electric microstrip antenna

Details Notched/diagonally fed electric microstrip antenna Notched/diagonally fed electric microstrip antenna

1976-11-10

1977-09-27

Smith, Alfred E.

Communications: radio wave antennas

Antennas

Microstrip

343830, 343846, H01A 928, H01A 138

Patent

active

040514781

ABSTRACT:
A notched/diagonally fed electric microstrip dipole antenna consisting of a hin electrically conducting, rectangular-shaped element formed on one surface of a dielectric substrate, the ground plane being on the opposite surface. The length of the element determines the resonant frequency. The feed point is in a notch located along the diagonal with respect to the antenna length and width, and the input impedance can be varied to match any source impedance by moving the feed point along the diagonal line of the antenna without affecting the radiation pattern. The antenna bandwidth increases with the width of the element and spacing between the element and ground plane. Singularly fed circular polarization is easily obtained with this antenna.

REFERENCES:
patent: 3478362 (1969-11-01), Ricardi et al.
patent: 3803623 (1974-04-01), Charlot, Jr.
patent: 3810183 (1974-05-01), Krutsinger et al.
patent: 3947850 (1976-03-01), Kaloi
patent: 3972049 (1976-07-01), Kaloi
patent: 3972050 (1976-07-01), Kaloi
patent: 3978488 (1976-08-01), Kaloi
patent: 3984834 (1976-10-01), Kaloi
patent: 3984834 (1976-10-01), Kaloi

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