A Low Power Buffer-Feedback Oscillator with Current Reused Structure

Chang-Wan KIM  Dat NGUYEN  Jong-Phil HONG  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E99-C   No.12   pp.1335-1338
Publication Date: 2016/12/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E99.C.1335
Type of Manuscript: BRIEF PAPER
Category: Electronic Circuits
Keyword: 
millimeter-wave,  low power,  buffer-feedback,  oscillator,  

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Summary: 
This paper presents a low power millimeter-wave oscillator consisting of a current-reused topology and buffer-feedback. By connecting a buffer-feedback topology between the core LC-tank of the oscillator and the output buffer stage, the simulated oscillation frequency of the proposed oscillator is increased by 17%, compared to that of the conventional current-reused oscillator. In addition, to obtain the same output power, the proposed oscillator reduces the power dissipation by 47%, compared to that of the conventional buffer-feedback oscillator. The prototype of the proposed oscillator is fabricated in a 65nm CMOS technology with a size of 700µm×480µm including pad. Measurement results indicate an oscillation frequency of 71.3GHz, while dissipating 10mA from a 1.6V supply.