US 12,136,939 B2
Receiver with distributed attenuators
Saikat Sarkar, Irvine, CA (US); and Xiang Guan, Santa Clara, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Feb. 8, 2022, as Appl. No. 17/667,187.
Prior Publication US 2023/0254001 A1, Aug. 10, 2023
Int. Cl. H04B 1/18 (2006.01); H04B 1/16 (2006.01)
CPC H04B 1/18 (2013.01) [H04B 1/1607 (2013.01); H04B 1/1638 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electronic device comprising:
an antenna configured to receive a radio frequency signal;
a plurality of amplifiers arranged in series along a transmission line and coupled to the antenna, each amplifier of the plurality of amplifiers having a gain and a gain variation based on a temperature;
a phase shifter coupled in series to at least one amplifier of the plurality of amplifiers along the transmission line, the phase shifter having a gain variation based on the temperature;
a first attenuator coupled to a first amplifier of the plurality of amplifiers or the phase shifter, the first attenuator being configured to attenuate the radio frequency signal based on the temperature to compensate for at least a portion of a cumulative gain variation of the plurality of amplifiers and the phase shifter based on the temperature.