APPARATUS AND METHOD FOR ANTENNA MATCHING

摘要

A method and apparatus are for performing antenna matching and include determining a cable connection state of a cable connector, generating a cable detection signal that indicates the cable connection state, and modifying impedance transform of a tunable matching circuit in response to the cable detection signal. The cable detection signal indicates one of a presence and an absence of a cable connector. The tunable matching circuit couples a transceiver and an antenna. The tunable matching circuit couples the selected impedance transform between the transceiver and the antenna. The apparatus is a radio communication device that includes a transceiver, a processing system, an antenna, a tunable matching circuit, an input/output section, a cable connector, and a sensor.

主权项

1. An apparatus, comprising:
A transceiver; An antenna; a tunable matching circuit that is responsive to a tuning input to modify an impedance transform of the tunable matching circuit, wherein the tunable matching circuit couples the selected impedance transform between the transceiver and the antenna; A cable connector; A sensor that determines a cable connection state of the cable connector and generates a cable detection signal that indicates the cable connection state; and A control circuit coupled to the cable detection signal and the tuning input of the tunable matching circuit, wherein the control circuit modifies the tunable matching circuit in response to an indication of the cable connection state that a cable is present in the connector.