Patent ID: 9001941
Filing Date: 2015-04-07
Classification: H03G,H04B

Abstract:
1. A receiver, comprising: a front-end block to provide a front-end gain on a radio-frequency input signal, the front-end block including a mixer to convert the radio-frequency input signal to a baseband signal; a wide-band peak detector coupled to the front-end block; a baseband block to provide a baseband gain on the baseband signal; an analog-to-digital converter to convert the baseband signal to a digital signal; a narrow-band peak detector coupled to an output of the analog-to-digital converter, wherein the narrow-band detector includes at least two comparators to detect a saturation level of the analog-to-digital converter, a first comparator using a low saturation threshold and a second comparator using a high saturation threshold, wherein the low and high saturation thresholds correspond to different saturation levels of the analog-to-digital converter; and an automatic gain control circuit, to independently control the front-end gain and the baseband gain based on outputs from the wide-band peak detector and narrowband peak detector.