Title |
Injection Locked Synchronization Characteristics of a Millimeter Wave Second Harmonic Oscillator |
DOI |
https://doi.org/10.5370/KIEE.2013.62.12.1700 |
Keywords |
Injection-synchronization ; Harmonic FET oscillator ; Millimeter wave source ; Phase noise |
Abstract |
A second harmonic millimeter wave oscillator utilizing sub-harmonic injection-synchronization is presented. A 8.7GHz oscillator with MES-FET is designed, and is driven as a harmonic output oscillator at 17.4GHz by means of sub-harmonic injection-synchronization. The oscillator operates as a multiplier as well as a oscillator in this scheme. Adopting this method, a high sable, high frequency millimeter wave source is obtainable even though self-oscillating frequency of an oscillator is relatively low. The range of injection-synchronization is about 26MHz, and is proportional to the input sub-harmonic power. The spectrum analysis of the 2nd harmonic output frequency shows remarkably decreased the phase noise level. |