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AssigneeKeysight Technologies, Inc.
InventorsJan Verspecht, Troels Studsgaard Nielsen
Estimating the term…
A receiver-implemented method is for measuring a periodically modulated signal. The method includes applying a received periodically modulated signal to a mixer of a receiver, the periodically modulated signal not synchronized with the receiver, and tuning a local oscillator (LO) of the mixer using an estimate of actual carrier frequency and an estimate of an arbitrary waveform generator (AWG) sampling rate to obtain a digitized intermediate frequency (IF) signal. The method further includes applying a short time Fourier transform (STFT) to the digitized IF signal, extracting a carrier frequency offset and a AWG sampling rate offset based on the applied STFT, compensating for the carrier frequency offset, and applying a digital correction to the STFT to compensate for the AWG sampling rate offset. Compensating for the carrier frequency offset may include retuning the LO to obtain a new digitized IF signal to which the digital correction is applied.
A receiver-implemented method of measuring a periodically modulated signal, said method comprising:
A vector network analyzer (VNA), comprising:
A computer readable medium that stores instructions that cause a signal processor of a receiver having a local oscillator (LO) and a mixer to carry out a receiver-implemented method of measuring a periodically modulated signal that is not synchronized with the receiver, wherein the periodically modulated signal is applied to the mixer of the receiver, and the method comprising:
Dependencies are inferred from the claim text.