Patent ID: 9281854
Filing Date: 2016-03-08
CPC Classification: H04B

Claim Text:
1. A method for signal-path processing bias detection, the method comprising: generating a first carrier signal by a combination of an oscillator and a clock generator, wherein the first carrier signal includes a reference; inverting the reference signal by a switch; concurrently applying the first carrier signal to one or more functional components, wherein a component error is introduced by the one or more functional components to the first carrier signal and a second carrier signal is formed using the component error; receiving, at a signal detection and differencing component, the second carrier signal and the inverted reference signal; averaging, by the signal detection and differencing component, the inverted reference signal and the second carrier signal to identify the component error; processing the second carrier signal by one or more signal-path processing components, wherein a second carrier signal path processing error is introduced by the one or more signal-path processing components to the second carrier signal and a third carrier signal is formed using the second carrier signal path processing error; receiving, by a signal-path processing detector, the inverted reference signal, the component error and the third carrier signal; and determining, at the signal-path processing detector, a signal-path processing error by averaging the third carrier signal with the inverted signal to find a total signal error and then subtracting from the total signal error the component error.