US 11,901,927 B2
Dynamic range extension of radio frequency signals using phasing of two or more IQ channels
Nikhil Ashok Deshmukh, Bangalore (IN); and Michael Loehning, Dresden (DE)
Assigned to National Instruments Corporation, Austin, TX (US)
Filed by NATIONAL INSTRUMENTS CORPORATION, Austin, TX (US)
Filed on Apr. 5, 2022, as Appl. No. 17/713,587.
Claims priority of application No. 202241008720 (IN), filed on Feb. 18, 2022.
Prior Publication US 2023/0268947 A1, Aug. 24, 2023
Int. Cl. H04B 1/16 (2006.01)
CPC H04B 1/16 (2013.01) 20 Claims
OG exemplary drawing
 
1. A multiple-channel phasing receiver comprising:
a splitter circuit configured to split an input signal into a plurality of signals;
a plurality of single-channel receivers configured to provide a corresponding plurality of intermediate signals, each single-channel receiver of the plurality of single-channel receivers having:
an input configured to receive a corresponding respective signal of the plurality of signals; and
an output configured to provide a corresponding respective intermediate signal of the plurality of intermediate signals, wherein the respective intermediate signal is a function of at least:
the corresponding respective signal; and
a corresponding respective phase of a plurality of phases of a local oscillator signal; and
a digital signal processor configured to combine the plurality of intermediate signals into a single output signal;
wherein the plurality of phases of the local oscillator signal is distributed over π/2 radians.