US 11,909,429 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 Sep. 8, 2022, as Appl. No. 17/940,750.
Claims priority of provisional application 63/242,438, filed on Sep. 9, 2021.
Prior Publication US 2023/0080916 A1, Mar. 16, 2023
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 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 gain adjustment device, one or more amplifiers, and a frequency mixer;
a signal adjustment stage coupled to receive the mixer output signal, the signal adjustment stage comprising: a temperature compensation device configured to compensate for changes in signal gain or attenuation due to changes in temperature; a second bandpass filter; a gain adjustment device; one or more amplifiers; and a low pass filter; and
an output port coupled to output an adjusted mixer output signal from the signal adjustment stage.