US 12,261,615 B2
Attenuating continuous wave spurs associated with a receiver
Pablo Perez Lara, St Neots (GB); and John Dominic Wilson, Welwyn Garden City (GB)
Assigned to VIAVI Solutions Inc., Chandler, AZ (US)
Filed by VIAVI Solutions Inc., Chandler, AZ (US)
Filed on Jan. 27, 2023, as Appl. No. 18/160,741.
Prior Publication US 2024/0259027 A1, Aug. 1, 2024
Int. Cl. H03M 1/06 (2006.01)
CPC H03M 1/0604 (2013.01) 20 Claims
OG exemplary drawing
 
1. A method, comprising:
obtaining, by a receiver, a digitized output of a radio frequency (RF) analog-to-digital-converter (ADC) of the receiver; and
applying, by the receiver, a spur cancellation to the digitized output of the RF ADC to attenuate one or more continuous wave spurs from the digitized output of the RF ADC, wherein the spur cancellation is based on a frequency planning with coherent averaging, wherein the frequency planning is for a first reference clock, a second reference clock, a transmit local oscillator (LO), a receive LO, and a numerically controlled oscillator (NCO) of the RF ADC that causes corresponding signals to be integer multiples of a frequency bin, and wherein the frequency bin is based on a sampling frequency, an ADC decimation factor, and an integer number.