Skip to Content
Find More Like This
Return to Search

Correction of I/Q channel errors without calibration

United States Patent

October 22, 2002
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
A method of providing a balanced demodular output for a signal such as a Doppler radar having an analog pulsed input; includes adding a variable phase shift as a function of time to the input signal, applying the phase shifted input signal to a demodulator; and generating a baseband signal from the input signal. The baseband signal is low-pass filtered and converted to a digital output signal. By removing the variable phase shift from the digital output signal, a complex data output is formed that is representative of the output of a balanced demodulator.
Doerry; Armin W. (Albuquerque, NM), Tise; Bertice L. (Albuquerque, NM)
Sandia Corporation (Albuquerque, NM)
09/ 766,322
January 19, 2001
The United States Government has rights in this invention pursuant to Department of Energy Contract No. DE-AC04-94AL85000 with Sandia Corporation.