US 11,942,974 B2
Millimeter wave radio calibration circuit
Khaled Khalaf, Aarschot (BE); Ahmet Tekin, Leuven (BE); Biagio Bisanti, Antibes (FR); Qixian Shi, Kessel Lo (BE); and Eric Duvivier, Biot (FR)
Assigned to Pharrowtech BV, Leuven (BE)
Filed by PHARROWTECH BV, Leuven (BE)
Filed on Jul. 21, 2022, as Appl. No. 17/814,117.
Claims priority of provisional application 63/203,396, filed on Jul. 21, 2021.
Prior Publication US 2023/0336197 A1, Oct. 19, 2023
Int. Cl. H04B 1/04 (2006.01); H04L 27/36 (2006.01); H04L 27/38 (2006.01)
CPC H04B 1/0475 (2013.01) [H04L 27/364 (2013.01); H04L 27/3863 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for calibrating a radio transceiver, the method comprising:
injecting a variable frequency tone;
upconverting the variable frequency tone to generate a plurality of upconverted tones at an input to a lowpass filter of the radio transceiver;
determining, based on the plurality of tones, a filter response for the lowpass filter;
determining, based on the filter response, a calibration tone for the lowpass filter.