Patent ID: 9698758
Date: 2017-07-04
CPC Classifications: H01Q,H03H,H04B

Claim:
1. An apparatus, comprising: a tunable impedance matching network including a tunable reactive element, the tunable impedance matching network being coupled with an antenna of a communication device and positioned between the antenna and a power amplifier of the communication device; a controller coupled with the tunable impedance matching network; and a detector coupled with the controller and positioned between the tunable impedance matching network and the power amplifier, wherein the controller obtains parameters via the detector for forward and reverse signals at a port of the tunable impedance matching network, wherein the controller adjusts the tunable reactive element according to the parameters to perform impedance matching by locating an impedance mismatch entry in a lookup table accessible to the controller that approximates an impedance mismatch, wherein the lookup table does not include s-parameters, and wherein the locating the impedance mismatch entry in the lookup table does not utilize a calculation of the s-parameters during the impedance matching.