US 12,341,546 B2
Adaptive control and testing system for an adaptive receiver
Jeffrey H. Hunt, Thousand Oaks, CA (US); Fatemeh Aghlmand, Pasadena, CA (US); and Azita Emami, Pasadena, CA (US)
Assigned to The Boeing Company, Chicago, IL (US); and California Institute of Technology, Pasadena, CA (US)
Filed by The Boeing Company, Chicago, IL (US); and California Institute of Technology, Pasadena, CA (US)
Filed on Jan. 9, 2023, as Appl. No. 18/151,996.
Claims priority of provisional application 63/298,121, filed on Jan. 10, 2022.
Prior Publication US 2023/0224046 A1, Jul. 13, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 1/12 (2006.01); H04B 1/18 (2006.01); H04B 10/27 (2013.01); H04B 10/61 (2013.01)
CPC H04B 1/12 (2013.01) [H04B 1/18 (2013.01); H04B 10/27 (2013.01); H04B 10/616 (2013.01); H04B 10/6164 (2013.01); H04B 10/6165 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An adaptive receiver comprising:
a current buffer that receives an input current;
an inverter based transimpedance circuit that receives a buffered current from the current buffer and converts the buffered current to a variable gain voltage;
an average current control loop that feeds back from the inverter based transimpedance circuit to the current buffer, wherein the average current control loop adaptively controls an average current into the current buffer;
a variable gain circuit that receives variable gain voltage from the inverter based transimpedance circuit and outputs a differential voltage;
a differential amplifier that receives the differential voltage output from the variable gain circuit and outputs an amplified differential voltage;
an automatic gain control loop that feeds back from the differential amplifier to the inverter based transimpedance circuit and variable gain circuit, wherein the automatic gain control loop adaptively controls a peak to peak voltage output by the differential amplifier based on a desired peak-to-peak level for the output of the differential amplifier; and
a differential buffer that receives the amplified differential voltage output from the differential amplifier and outputs recovered radio frequency signals.