Broadband Frequency-domain Analog Processor for Spectrum Sensing with >20 GHz Scan Range

An on-chip frequency-domain analog processor inspired by frequency-scanned arrays is proposed for broadband spectrum sensing. It exploits frequency-dependent constructive and destructive interference based on an array of programmable dispersion-engineered elements. Digitally programmable dispersion...

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Bibliographic Details
Published in:IEEE transactions on circuits and systems. II, Express briefs Express briefs, 2023-05, p.1-1
Main Authors: Zhong, Liwen, Abbasi, Mohammadreza, Uddin, Syed Mohammad Ashab, Lee, Wooram
Format: Article
Language:English
Subjects:
analog processor
Cognitive radio
Frequency modulation
frequency-scanned array
millimeter wave
Passband
Phase shifters
Phased arrays
Sensors
Signal resolution
spectrum sensing
Time-frequency analysis
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Summary:An on-chip frequency-domain analog processor inspired by frequency-scanned arrays is proposed for broadband spectrum sensing. It exploits frequency-dependent constructive and destructive interference based on an array of programmable dispersion-engineered elements. Digitally programmable dispersion is implemented with the combination of a wideband vector modulator and true-time delay line. Designed in a GlobalFoundries 22FDSOI process, the IC prototype achieves a frequency scan range of 20 GHz and a resolution bandwidth of 2.6 GHz (tapering) and 2.3 GHz (no tapering), while consuming 58 mW.
ISSN:1549-7747
DOI:10.1109/TCSII.2023.3260088