Dual band antenna

Details Dual band antenna Dual band antenna

1997-11-10

2000-04-25

Le, Hoanganh

Communications: radio wave antennas

Antennas

With lumped reactance filter in active antenna

343702, 343715, 343790, H01Q 100

Patent

active

060549629

ABSTRACT:
A dual band antenna with a simple and compact structure includes an inductor, first and second rod-like radiating elements connected to opposite ends of the inductor, with dielectric material surrounding both the inductor and the joining portions of the first and second radiating elements on the respective ends of the inductor. A conductive housing surrounds the dielectric and supports the inductor and the joining portions of the first and second radiating elements. The housing and dielectric create a capacitance, so that an LC resonant circuit is formed in conjunction with the inductor. The LC circuit is designed such that only one radiating element radiates at the higher band of the dual operating band, whereas both radiating elements radiate at the lower band.

REFERENCES:
patent: 4675687 (1987-06-01), Elliott
patent: 5017935 (1991-05-01), Hayashi et al.
patent: 5617105 (1997-04-01), Tsunekawa et al.
patent: 5734352 (1998-03-01), Seward et al.
patent: 5898406 (1999-04-01), Matero

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