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This paper presents a low power, low phase noise mm-wave voltage controlled oscillator. The VCO can be tuned from 41 to 44.5 GHz (8% tuning range) and utilizes a differential tuning mechanism based on varactors and fixed MIM capacitors. Fabricated in a bulk CMOS 65 nm technology, it consumes 3.6 mW and exhibits a phase noise of -106 dBc/Hz at 1 MHz offset from a 41.2 GHz carrier. The resulting FOM...
The next generation of wireless communication is a ubiquitous radio system concept, providing wireless access from short-range to wide-area, with one single reconfigurable and adaptive system for all envisaged radio environments. This paper presents the design approach of RCO (reconfigurable concurrent oscillator) that simultaneously generates two or more signals of different frequencies that eliminate...
A novel quality factor tuning scheme to tune a high-Q, high-frequency GmC bandpass filter is presented. The proposed Q tuning loop tunes the filter phase characteristics inside a phase locked loop system to tune its quality factor. Filter is used as a voltage controlled oscillator of the phase locked loop system. The proposed tuning scheme starts the 70MHz filter from a low-Q region (~ 10) and tunes...
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