Two-frequency slotted planar antenna

Details Two-frequency slotted planar antenna Two-frequency slotted planar antenna

1986-05-16

1988-10-04

Sikes, William L.

Communications: radio wave antennas

Antennas

Microstrip

343725, 343729, 343767, H01Q 138

Patent

active

047758660

ABSTRACT:
A two-frequency planar antenna incorporates a resonant antenna and a slot antenna which are arranged in a superposed manner on the same dielectric substrate so as to be operable independently without interfering with each other. The two-frequency planar antenna includes a front conductor plate arranged on one surface of a dielectric substrate to serve as a radiation conductor plate of a resonant antenna and a slotted conductor of a slot antenna, a back conductor plate arranged on the other surface of the dielectric substrate to serve as a grounding conductor of the resonant antenna and a reflector of the slot antenna, and a slot antenna feed line embedded in the dielectric substrate. The slot antenna feed line is arranged along an axis where an electric field in an excitation mode of the resonant antenna is reduced to zero and at least one slot is formed in the front conductor plate along the feed line.

REFERENCES:
patent: 3818490 (1974-06-01), Leahy
patent: 3864690 (1975-02-01), Pierrot
patent: 3971032 (1976-07-01), Munson et al.
patent: 4162499 (1979-07-01), Jones, Jr. et al.
patent: 4197545 (1980-04-01), Favaloro et al.
patent: 4691206 (1987-09-01), Shapter et al.
patent: 4692769 (1987-09-01), Gegan

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