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Phase-Noise Analysis in Rotary Traveling-Wave Oscillators Using Simple Physical Model

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4 Author(s)
Koji Takinami ; Panasonic Wireless Research Laboratory, Panasonic Co., Ltd., San Jose, CA, USA ; Rich Walsworth ; Saleh Osman ; Steve Beccue

We show that the rotary traveling wave oscillator (RTWO) is well treated as a superposition of multiple standing-wave oscillators (SWOs). Based on the proposed physical interpretation, we derive a phase-noise formula for the SWO, and extend it to the RTWO, which can predict thermally induced phase noise with no more complexity than the well-understood LC voltage-controlled oscillator. Measurement and simulation validate the analysis. The physically based approach and simple resulting expressions make it possible to design the RTWO for a given phase noise without lengthy simulations.

Published in:

IEEE Transactions on Microwave Theory and Techniques  (Volume:58 ,  Issue: 6 )
IEEE RFIC Virtual Journal
IEEE RFID Virtual Journal