Method and apparatus for adaptive impedance matching

摘要

A system that incorporates teachings of the present disclosure may include, for example, an adaptive impedance matching network having an RF matching network coupled to at least one RF input port and at least one RF output port and comprising one or more controllable variable reactive elements. The RF matching network can be adapted to reduce a level of reflected power transferred from said at least one input port by varying signals applied to said controllable variable reactive elements. The one or more controllable variable reactive elements can be coupled to a circuit adapted to map one or more control signals that are output from a controller to a signal range that is compatible with said one or more controllable variable reactive elements. Additional embodiments are disclosed.

主权项

1. A communication device, comprising:
a transceiver; an antenna; and an RF matching network comprising a plurality of variable reactive elements, wherein the RF matching network has an RF input port coupled to the transceiver producing an RF signal supplied to the RF input port, and wherein the RF matching network comprises an RF output port coupled to the antenna; a detector that obtains a signal from the RF output port of the RF matching network and determines a signal parameter associated with the signal; and a controller coupled with the detector and with the RF matching network, wherein the controller generates a plurality of control signals for independently controlling the plurality of variable reactive elements based on the signal parameter, wherein the plurality of control signals is generated by the controller based on a mode of operation of the communication device, wherein the mode of operation distinguishes between a transmit mode and a receive mode, and wherein the RF matching network modifies signal power transferred from the RF input port to the RF output port according to the plurality of control signals applied to the plurality of variable reactive elements to vary a variable impedance of the RF matching network.