Title:
ELECTRONICALLY TUNABLE QUAD-BAND ANTENNAS FOR HANDSET APPLICATIONS
Document Type and Number:
WIPO Patent Application WO2004073103
Kind Code:
A9
Abstract:
An electronically tunable quad-band antenna which includes a tunable high band antenna tuned by at least one tunable varactor associated therewith; the tunable high band antenna further includes a substrate, a patch element on said substrate, at least one voltage tunable varactor associated with the patch element, a DC bias point on the patch element, an RF input on the patch element, and a temperature sensor associated with the high band pass antenna. Also included in a preferred embodiment of the electronically tunable quad-band antenna of the present invention is a tunable low band antenna tuned by at least one tunable varactor associated therewith, the tunable low band antenna further including a substrate, a path element on said substrate, at least one voltage tunable varactor associated with said patch element, a DC bias point on said patch element, an RF input on said patch element, and a temperature sensor associated with said low band pass antenna. Also included is a controller receiving control data, and receiving output information from said low band antenna and output information from said high band antenna and controlling a first bias voltage for biasing the at least one voltage tunable varactor associated with the high band antenna and a second bias voltage for biasing the at least one voltage tunable varactor associated with the low band antenna. The bias voltages can be provided by a DC to DC converter regulator.
Inventors:
KHOSRO SHAMSAIFAR (US)
Application Number:
PCT/US2004/003524
Publication Date:
September 30, 2004
Filing Date:
February 05, 2004
Export Citation:
Assignee:
KHOSRO SHAMSAIFAR (US)
International Classes:
H01Q1/00; H01Q1/24; H01Q5/00; H01Q9/04; H01Q11/12; H01Q21/29; H01Q21/30; H01Q23/00; H04B1/04; H04B1/18; H04B1/40; (IPC1-7): H01Q/
Download PDF:
Previous Patent: LENS ANTENNA DEVICE FOR MOBILE COMMINCATIONS
Next Patent: USING ANTENNA ARRAYS IN MULIPATH ENVIRONMENT
Next Patent: USING ANTENNA ARRAYS IN MULIPATH ENVIRONMENT