Patent ID: 9379761
Filing Date: 2016-06-28
CPC Classification: G01R,H04B

Claim Text:
1. An impedance measurement system, comprising; an input network with first, second, and third primary signal inputs and with first and second intermediate signal outputs; a received signal strength indicator (RSSI) chain coupled to the first intermediate signal output, the RSSI chain having an RSSI output; a limiter RSSI chain coupled to the second intermediate signal output, the limiter RSSI chain having a limiter output and an RSSI output; a limiter chain coupled to the input network, the limiter chain having a limiter output; a subtraction circuit coupled to the RSSI output of the RSSI chain and to the RSSI output of the limiter RSSI chain; and a phase detector coupled to the limiter output of the limiter RSSI chain and to the limiter output of the limiter chain.