Patent ID: 9559731
Date: 2017-01-31
CPC Classifications: G01R,H03F,H04B

Claim:
1. A magnitude detector for use in a radio frequency (RF) device for detecting a magnitude of a reflection coefficient, comprising: an incident signal amplifier configured to amplify an incident signal, the incident signal amplifier comprising: a first common source transistor configured to receive the incident signal through a gate of the first common source transistor; and a first capacitor connected to the first common source transistor in parallel; an output level controller configured to control a level of an output of the incident signal amplifier based on a control signal; a reflected signal amplifier configured to amplify a reflected signal; and a comparator configured to compare the output of the incident signal amplifier and an output of the reflected signal amplifier to provide a comparison result indicating whether the magnitude of the reflection coefficient is equal to or greater than a threshold determined based on the control signal.