US 12,237,856 B2
Q-band block down converter
Kumud Patel, Clarksburg, MD (US); Minheng Shan, Rockville, MD (US); and Guojun Chen, Damascus, MD (US)
Assigned to Hughes Network Systems, LLC, Germantown, MD (US)
Filed by Hughes Network Systems, LLC, Germantown, MD (US)
Filed on Feb. 13, 2024, as Appl. No. 18/439,891.
Application 18/439,891 is a continuation of application No. 17/940,750, filed on Sep. 8, 2022, granted, now 11,909,429.
Claims priority of provisional application 63/242,438, filed on Sep. 9, 2021.
Prior Publication US 2024/0348275 A1, Oct. 17, 2024
Int. Cl. H04B 1/10 (2006.01); H03L 7/099 (2006.01); H04B 1/40 (2015.01)
CPC H04B 1/1027 (2013.01) [H03L 7/0991 (2013.01); H04B 1/40 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A radiofrequency down converter, comprising:
an input port to receive a radiofrequency input signal;
a first bandpass filter comprising a microwave waveguide, the first bandpass filter being coupled to the input port and being configured to filter the radiofrequency input signal;
a frequency generator and a frequency multiplier that are used to generate an oscillator signal, wherein the frequency generator comprises at least one phase-locked loop and is configured to output a first signal having a first frequency, and wherein the frequency multiplier is configured to receive the first signal and output a second signal that has a second frequency that is a multiple of the first frequency;
a mixer stage coupled to the first bandpass filter, the mixer stage being configured to generate a mixer output signal by processing the filtered radiofrequency input signal using a frequency mixer that receives the oscillator signal;
a signal adjustment stage coupled to receive the mixer output signal, the signal adjustment stage comprising a second bandpass filter; and
an output port coupled to output an adjusted mixer output signal from the signal adjustment stage.