US 11,874,308 B2
ASIC implementing real-time spectrum analysis
Connor P. McKay, Colorado Springs, CO (US); Joseph D. Shaker, Colorado Springs, CO (US); and Scott Allan Genther, Colorado Springs, CO (US)
Assigned to KEYSIGHT TECHNOLOGIES, INC., Santa Rosa, CA (US)
Filed by Keysight Technologies, Inc., Santa Rosa, CA (US)
Filed on Aug. 1, 2022, as Appl. No. 17/878,249.
Claims priority of provisional application 63/273,387, filed on Oct. 29, 2021.
Prior Publication US 2023/0138538 A1, May 4, 2023
Int. Cl. G01R 23/16 (2006.01)
CPC G01R 23/16 (2013.01) 12 Claims
OG exemplary drawing
 
1. A real-time spectrum analyzer (RTSA), comprising:
analog-to-digital converter (ADC) configured to convert in real-time an input analog signal into a digital input data stream;
a digital down-converter (DDC) configured to down-convert in real-time the digital input data stream into a down-converted input data stream;
a fast Fourier transform (FFT) unit configured to generate in real-time FFTs of the down-converted input data stream;
an acquisition memory circuit configured to store in real-time the FFTs generated by the FFT unit; and
an analyzer configured to read in non-real time the FFTs stored in the acquisition memory.