Patent ID: 6765540
Filing Date: 2004-07-20
Classification: G01R,H01G,H01L,H01P,H03B,H03F,H03H,H03J,H03L,H04B

Abstract:
A tunable antenna matching circuit comprising:a ferro-electric tunable component configured to be coupled to an antenna; a matching circuit comprising the ferro-electric tunable component; a control line operably coupled to the ferro-electric component; a control source electrically coupled to the control line, the control source configured to transmit a control signal on the control line; wherein the ferro-electric component, responsive to the control signal, adjusts the impedance of the matching circuit; a first inductor coupled, at a first end of the first inductor, to ground and configured to be coupled to an antenna at a second end of the first inductor; a second inductor coupled, at a first end of the second inductor, to the second end of the first inductor; a first capacitor coupled, at a first end of the first capacitor, to a second end of the second inductor and to ground at a second end of the first capacitor; and a second capacitor coupled to the second end of the second inductor.