US 11,658,764 B2
Biasing technique for receiver based on radio frequency (RF) jammer detection
Lai Kan Leung, San Marcos, CA (US); Aleksandar Miodrag Tasic, San Diego, CA (US); Francesco Gatta, San Diego, CA (US); Chiewcharn Narathong, Laguna Niguel, CA (US); and Kyle David Holland, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Dec. 16, 2020, as Appl. No. 17/124,368.
Prior Publication US 2022/0190950 A1, Jun. 16, 2022
Int. Cl. H04K 3/00 (2006.01); H03F 3/19 (2006.01); H03M 1/12 (2006.01)
CPC H04K 3/22 (2013.01) [H03F 3/19 (2013.01); H03M 1/12 (2013.01); H03F 2200/294 (2013.01); H03F 2200/451 (2013.01)] 22 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a receiver;
a radio frequency (RF) jammer detector including an input coupled to the receiver; and
a receiver bias circuit including an input coupled to an output of the RF jammer detector, and a supply voltage output, configured to produce an adjustable supply voltage, coupled to a supply voltage input of the receiver, wherein the receiver bias circuit comprises:
a set of supply voltage rails to receive different supply voltages, respectively;
a set of switching devices coupled between the set of supply voltage rails and the supply voltage output, respectively;
an additional switching device coupled in series with a resistor between one of the set of supply voltage rails and the supply voltage output; and
a control circuit, wherein an input of the control circuit is the input of the receiver bias circuit, and an output of the control circuit is coupled to the set of switching devices, respectively.