US 11,736,323 B2
System and method using adjunct signals to increase wideband receiver performance
Gary A. Ray, Issaquah, WA (US)
Assigned to The Boeing Company, Arlington, VA (US)
Filed by The Boeing Company, Chicago, IL (US)
Filed on Aug. 9, 2021, as Appl. No. 17/397,682.
Claims priority of provisional application 63/085,904, filed on Sep. 30, 2020.
Prior Publication US 2022/0103403 A1, Mar. 31, 2022
Int. Cl. H04L 25/08 (2006.01); H04L 25/03 (2006.01)
CPC H04L 25/08 (2013.01) [H04L 25/03828 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A wideband receiver comprising:
an antenna;
a local clock configured to generate clock signals;
an analog-to-digital converter connected and configured to convert analog signals received by the antenna into digital samples in accordance with the clock signals;
an adjunct processing module connected and configured to match filter the digital samples output by the analog-to-digital converter and derive an interpolation coefficient vector from the clock signals and the match-filtered digital samples;
delay circuitry connected and configured to delay the digital samples output by the analog-to-digital converter and received directly by the delay circuitry without match filtering;
an interpolation filter connected and configured to convolve the digital samples output by the delay circuitry with the interpolation coefficient vector output by the adjunct processing module to remove local clock-induced jitter from the digital samples output by the delay circuitry; and
a wideband receiver processing module connected and configured to process digital samples received from the interpolation filter.