EP 1753084 A2 20070214 - Ferroelectric slot antenna
Title (en)
Ferroelectric slot antenna
Title (de)
Ferroelektrische Schlitzantenne
Title (fr)
Antenne à fentes ferroélectrique
Publication
Application
Priority
- EP 02718438 A 20020404
- US 28309301 P 20010411
- US 90463101 A 20010713
- US 91275301 A 20010724
- US 92773201 A 20010808
- US 92713601 A 20010810
Abstract (en)
A family of FE dielectric-tuned slot antennas and a method for frequency tuning a wireless communications antenna are provided. The method comprises: forming a radiator (504); forming a dielectric with ferroelectric material proximate to the radiator (506) forming a counterpoise (502); forming a slot (508); applying a voltage to the ferroelectric material; in response to applying the voltage, generating a dielectric constant; and, in response to the dielectric constant, communicating electromagnetic fields at a resonant frequency. Some aspects of the method further comprise: varying the applied voltage; and, modifying the resonant frequency in response to changes in the applied voltage. Modifying the resonant frequency includes forming an antenna with a variable operating frequency responsive to the applied voltage. Alternately stated, forming an antenna with a variable operating frequency includes forming an antenna with a predetermined fixed characteristic impedance, independent of the resonant frequency.
IPC 8 full level
H01Q 9/04 (2006.01); H01Q 9/16 (2006.01); H01Q 9/30 (2006.01); H01Q 13/02 (2006.01); H01Q 13/06 (2006.01); H01Q 13/20 (2006.01); H01Q 13/22 (2006.01)
CPC (source: EP)
H01Q 13/10 (2013.01); H01Q 13/106 (2013.01); H01Q 13/12 (2013.01)
Citation (applicant)
- US 5617104 A 19970401 - DAS SATYENDRANATH [US]
- US 5583524 A 19961210 - MILROY WILLIAM W [US]
- WO 0079645 A1 20001228 - ERICSSON TELEFON AB L M [SE]
- DE 1230468 B 19661215 - PHILIPS PATENTVERWALTUNG
- V. K. VARADAN ET AL.: "Smart materials and Structures", vol. 8, April 1999, IOP PUBLISHING LTD.., article "Design and Development of electronically tunable Microstrip Antennas", pages: 238 - 242
Designated contracting state (EPC)
DE ES FR GB IE IT
DOCDB simple family (publication)
EP 1753084 A2 20070214; EP 1753084 A3 20080227; EP 1753084 B1 20110824
DOCDB simple family (application)
EP 06123190 A 20020404