Multiband antenna with a distributed-constant dielectric resonan

Details Multiband antenna with a distributed-constant dielectric resonan Multiband antenna with a distributed-constant dielectric resonan

1996-10-30

2000-01-04

Le, Hoanganh

Communications: radio wave antennas

Antennas

With radio cabinet

343895, 343722, H01Q 124

Patent

active

060115165

ABSTRACT:
A multiband antenna comprises an antenna device which is resonant at two or more different frequencies. The antenna device comprises a first antenna rod (7), a second antenna rod (8), and a distributed-constant dielectric resonator which is a coaxial dielectric resonator (1A) comprising a dielectric block (1A1). The first antenna rod (7) is electrically connected to an inner conductor (4) covering the inner surface of the dielectric block (1A1). The second antenna rod (8) is electrically connected to an outer conductor (5) covering an outer periphery of the dielectric block (1A1). In another structure, the dielectric resonator is a triplate dielectric resonator (1B) comprising two dielectric plates (1B1). The first antenna rod (7) is electrically connected to a center conductor (6) interposed between the dielectric plates (1B1). The second antenna rod (8) is electrically connected to outer conductors (5) covering the dielectric plates (1B1) at the side opposite to the center conductor (6).

REFERENCES:
patent: 3474453 (1969-10-01), Ireland
patent: 4509056 (1985-04-01), Ploussios
patent: 5023866 (1991-06-01), DeMuro
patent: 5479141 (1995-12-01), Ishizaki et al.
patent: 5539363 (1996-07-01), Maruyama et al.
patent: 5748154 (1998-05-01), Yokota
Patent Abstracts of Japan, vol. 95, No. 6, Jul. 31, 1995 & JP 07 086823 A (Kokusai Electric Co., Ltd.), Mar. 31, 1995.

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