An 11-GHz-Band Subharmonic-Injection-Locked Oscillator MMIC

Kenji KAMOGAWA  Ichihiko TOYODA  Tsuneo TOKUMITSU 

Publication
IEICE TRANSACTIONS on Electronics  Vol.E78-C  No.8  pp.925-930
Publication Date: 1995/08/20
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Microwave and Millimeter-Wave Technology)
Category: 
Keyword: 
injection locking oscillator,  synthesizer,  MMIC,  external feedback,  subharmonic, 

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Summary: 
A subharmonic injection-locked oscillator (ILO) MMIC chain is proposed for the local oscillators and synthesizers used at millimeter-wave frequencies. A fabricated, primary 11-GHz-band injection-locked oscillator MMIC for the first stage ILO in the ILO-chain MMIC, achieves a wide subharmonic-injection-locking range at the subharmonic factors, 1/n (n=1, 2, 3, ), of 1/1, 1/2 and 1/3. The ILO MMIC abilities for synthesizer applications were confirmed with an injection-locking time of only 100-200 nsec, which is less than 1/100 that of PLL oscillators, and also with free-running oscillation performance and a wide injection locking range within a temperature range of -30 and 80.