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610-GHz Fourth Harmonic Signal Reactively Generated in a CMOS Voltage Controlled Oscillator Using Differentially Pumped Varactors
Cited 9 time in
Web of Science
Cited 8 time in Scopus
- Authors
- Issue Date
- 2020
- Citation
- IEEE Solid-State Circuits Letters, Vol.3, pp.46-49
- Abstract
- A fourth harmonic signal reactively generated in a voltage controlled oscillator (VCO) using differentially pumped varactors is used to demonstrate a compact 610-GHz source in 65-nm CMOS. The nonlinear C-V characteristics of accumulation mode varactor pair are used to generate the harmonic power. The circuit also utilizes a technique to boost the varactor Q and dynamic cut-off frequency to increase the harmonic power. The source delivers a peak radiating power of -25.2 dBm, with a frequency tuning range of 604.5-618.6 GHz (2.3%), a 3-dB tuning bandwidth of 607.1-614.3 GHz (1.2%), and a dc-THz efficiency of 0.01% (0.013% excluding the power consumption in the current source). The chip core area is 0.62 mm x 0.39 mm excluding the area for bond pads.
- ISSN
- 2573-9603
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Related Researcher
- College of Engineering
- Department of Electrical and Computer Engineering
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