Microstrip type antenna having small size and capable of changin

Details Microstrip type antenna having small size and capable of changin Microstrip type antenna having small size and capable of changin

1996-12-02

1998-11-17

Gross, Anita Pellman

Communications: radio wave antennas

Antennas

Microstrip

343702, 343846, H01Q 302, H01Q 124, H01Q 148

Patent

active

058382801

ABSTRACT:
In a microstrip type antenna used in a radio transceiver, the microstrip type antenna comprises a push-button switch which has a locked state of a first height and an unlocked state of a second height being taller than the first height. The locked state and the unlocked state are changed alternately whenever the push-button switch is pushed down. A dielectric plate is connected to the push-button switch and has first and second surfaces which are parallel to each other. A plane antenna element has a principal part which is located in parallel with the dielectric plate and a supporting part which is connected to the first surface and which is contiguous to the principal part to support the principal part. A ground plate is located in parallel with the dielectric plate with a space interval which left between the second surface and the ground plate.

REFERENCES:
patent: 2491629 (1949-12-01), Vervier et al.
patent: 4495503 (1985-01-01), Morman
patent: 4725845 (1988-02-01), Phillips
patent: 4829591 (1989-05-01), Hashimoto et al.
patent: 4924237 (1990-05-01), Honda et al.
patent: 5245349 (1993-09-01), Harada
patent: 5255001 (1993-10-01), Tamura et al.
patent: 5689821 (1997-11-01), Shimazaki
patent: 5696372 (1997-12-01), Grober et al.
Patent Abstract of Japan, vol. 5, No. 55 no date.
Dahele et al., "Theory and experiment on microstrip antennas with airgaps", 1985, IEEE Proceedings H Microwaves, Antennas & Propagation, pp. 455-460.

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