US 12,476,780 B2
Passive phase interpolator
Narendra M.K. Rao, Alamo, CA (US); and Rajasekhar Nagulapalli, Northampton (GB)
Assigned to Analog Devices International Unlimited Company, Limerick (IE)
Filed by Analog Devices International Unlimited Company, Limerick (IE)
Filed on Apr. 28, 2023, as Appl. No. 18/141,189.
Prior Publication US 2024/0364493 A1, Oct. 31, 2024
Int. Cl. H04L 7/00 (2006.01); H04L 7/033 (2006.01)
CPC H04L 7/0025 (2013.01) [H04L 7/0087 (2013.01); H04L 7/0337 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A system for generating a phase shifted output signal from at least three input signals, the system comprising:
signal selection circuitry, configured to receive the at least three input signals and select a first intermediate signal and a second intermediate signal from among the at least three input signals, wherein each of the at least three input signals is phase shifted from the other ones of the at least three input signals;
a plurality of circuit elements, the plurality of circuit elements including at least one of resistors or capacitors, in a series arrangement between a first intermediate signal node carrying the first intermediate signal and a second intermediate signal node carrying the second intermediate signal, wherein respective connection points between respective ones of the plurality of circuit elements form output nodes; and
output selection circuitry, configured to select the phase shifted output signal from a specified one of the output nodes.