Patent ID: 9621129
Date: 2017-04-11
CPC Classifications: H03H

Claim:
1. An impedance matching circuit comprising: a series element located between a first node and a second node, the first node in electrical communication with an antenna, the second node in electrical communication with a diplexer; a shunt element configured to be in electrical communication between one of the first node and the second node, and ground; and a switch network configured to switch the shunt element from being in electrical communication between the first node and ground to being in electrical communication between the second node and ground, the switch network including first, second, and third switches, the first switch connected between the first node and the shunt element, the third switch connected between the shunt element and the second node, the second switch being part of the shunt element, the second switch separated from the first node by the first switch and separated from the second node by the third switch.