Planar antenna achieving a wide frequency range and a radio appa

Details Planar antenna achieving a wide frequency range and a radio appa Planar antenna achieving a wide frequency range and a radio appa

1997-08-21

2000-03-07

Le, Hoanganh

Communications: radio wave antennas

Antennas

Microstrip

343846, 343702, H01Q 138

Patent

active

060346361

ABSTRACT:
A planar antenna includes a ground plate and a conductive plate arranged in parallel to the ground plate. The conductive plate has a ground terminal at a first position thereof and has a feed terminal at a second position thereof. The planar antenna further includes a frequency change switch which is used to charge the antenna resonance frequency by electrically connecting the conductive plate to the ground plate at a third position which is different from the first and second positions.

REFERENCES:
patent: 4053895 (1977-10-01), Malagisi
patent: 4367474 (1983-01-01), Schaubert et al.
patent: 4777490 (1988-10-01), Sharma et al.

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