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Spectra from 0.5 to 0.6THz play critical roles in planetary science, astrophysics and radio-astronomy as various chemical species including water, nitrates (NO2, N2O, NH3) and organics (CH4 and HCN) can either absorb or reflect radiation in this frequency regime. Accordingly, NASA and ESA have developed a wide range of spectroscopic sounding instruments to investigate our solar system. Current LO...
This letter presents a phase-noise-centric design methodology of a rotary traveling wave voltage controlled oscillator (RTW VCO). Based upon this methodology, a 15 GHz multiphase RTW VCO is realized in a standard 90 nm CMOS process. Particularly, shielded coplanar striplines are exploited to provide better shielding protection and higher characteristic impedance with comparable Q-factor...
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