US Patent No. 10,483,997

CIRCUIT FOR FREQUENCY TO TIME DOMAIN CONVERSION


Patent No. 10,483,997
Issue Date November 19, 2019
Title Circuit For Frequency To Time Domain Conversion
Inventorship Aravind Ganesan, Bengaluru (IN)
Jaiganesh Balakrishnan, Bengaluru (IN)
Sashidharan Venkatraman, Bengaluru (IN)
Bragadeesh Suresh Babu, Chennai (IN)
Assignee TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)

Claim of US Patent No. 10,483,997

1. A method for frequency to time domain conversion, comprising:receiving a set of frequency domain samples;
generating, based on the set of frequency domain samples:
a first sample subset comprising a predetermined fraction of the number of samples of the set of frequency domain samples; and
a second sample subset comprising the predetermined fraction of the number of samples of the set of frequency domain samples;
applying a linear phase rotation to the first sample subset and the second sample subset to produce a phase rotated first sample set and a phase rotated second sample subset;
post-processing the phase rotated first sample set to generate a first set of time domain samples;
post-processing the phase rotated second sample set to generate a second set of time domain samples; and
reordering the first set of time domain samples and the second set of time domain samples to produce an output set of time domain samples.