Patent ID: 9407335
Filing Date: 2016-08-02
CPC Classification: H01Q,H03K,H04B

Claim Text:
1. A wireless communication device comprising: multiple radio frequency (RF) transceivers; multiple antenna matching and tuning circuits (AMTCs) each respectively coupled to a corresponding RF transceiver; multiple antenna elements (AEs) each respectively coupled to a corresponding AMTC by a first coupling capacitor, wherein each AE is a first component of a corresponding capacitive touch and proximity sensor (CTPS); a detection integrated circuit (IC) communicatively coupled to each respective CTPS and which detects a change in capacitance of a corresponding CTPS caused by proximity of an object to the antenna element, while the antenna element can be used to communicate RF signals; and a modem coupled to the detection IC and each of the multiple RF transceivers and which: responsive to detection of the respective change in capacitance corresponding to each of the multiple CTPSes, determines an antenna loading condition presented to the wireless communication device by the object located within specific proximity of corresponding antenna elements, based on a detected change in antenna self-capacitance associated with a corresponding antenna element; determines antenna tuning states associated with each respective antenna element by using a pre-established mapping of antenna tuning states and changes in antenna self-capacitance correlated to antenna impedance, based on the determined antenna loading condition; and performs antenna impedance tuning by respectively providing the determined antenna tuning states to the multiple AMTCs.