Compact, low profile, single feed, multi-band, printed antenna

Details Compact, low profile, single feed, multi-band, printed antenna Compact, low profile, single feed, multi-band, printed antenna

2005-10-18

2005-10-18

Chen, Shih-Chao (Department: 2821)

Communications: radio wave antennas

Antennas

With radio cabinet

Reexamination Certificate

active

06956530

ABSTRACT:
Printed circuit techniques and two-shot molding techniques are used to form a metal radiating element, a metal ground plane element, a metal antenna feed, a metal short-circuiting strip and metal capacitive loading plates within small antennas that are buried within transmit/receive radio-devices such a mobile cellular telephones. Balanced and unbalanced, single-feed, two and three band antennas are provided wherein the radiating element is laterally spaced from the ground plane element, to thereby provide an antenna having a very low profile or height, including antennas wherein the ground plane element and the radiating element are placed coplanar on the same surface of a PCB. A thin dielectric carriage on a PCB allows for the metal capacitive loading plates to be placed on the sidewalls of the dielectric carriage, to thereby provide reactive loading of a radiating element that is on the top surface of the dielectric carriage.

REFERENCES:
patent: 4152565 (1979-05-01), Rose
patent: 6144344 (2000-11-01), Kim et al.
patent: 6421014 (2002-07-01), Sanad
patent: 6459413 (2002-10-01), Tseng et al.
patent: 6518937 (2003-02-01), Fang
patent: 6639560 (2003-10-01), Kadambi et al.
patent: 6642893 (2003-11-01), Hebron et al.
patent: 2003/0174092 (2003-09-01), Sullivan et al.

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