Title :
Analysis on locking characteristics of band-stop type of self-injection locked NRD guide Gunn oscillator at 60 GHz
Author :
Ohue, Ko-ichi ; Kuroki, Futoshi ; Yoneyama, Tsukasa
Author_Institution :
Kure Nat. Coll. of Technol., Kure, Japan
Abstract :
The Q-factor of the band-stop type of self-injection locked NRD (nonradiative dielectric waveguide) guide Gunn oscillator, which consists of a Gunn diode circuit coupled with a high Q ceramic resonator, was calculated as a function of the frequency deviation between the oscillation frequency of the free-running Gunn oscillator and the resonant frequency of the ceramic resonator in the 60 GHz bands. Agreement between the calculated and measured results was reasonably satisfactory, and thus the validity of the analytical procedure was confirmed. And it was obvious that the band-stop type of self-injection locked NRD guide Gunn oscillator has a high Q-factor as well as a low phase noise compared with the reflection type of self-injection locked NRD guide Gunn oscillator.
Keywords :
Gunn diodes; Gunn oscillators; Q-factor; injection locked oscillators; millimetre wave oscillators; nonradiative dielectric waveguides; resonators; Gunn diode circuit; Q-factor; band-stop type; free-running Gunn oscillator; frequency 60 GHz; frequency deviation; high Q ceramic resonator; locking characteristics; low phase noise; nonradiative dielectric waveguide; oscillation frequency; reflection type; resonant frequency; self-injection locked NRD guide Gunn oscillator; Ceramics; Coupling circuits; Dielectrics; Diodes; Gunn devices; Oscillators; Phase noise; Q factor; RLC circuits; Resonant frequency; Gunn oscillator; Millimeter-waves; NRD guide; and Self-injection locking;
Conference_Titel :
Microwave Conference, 2009. APMC 2009. Asia Pacific
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-2801-4
Electronic_ISBN :
978-1-4244-2802-1
DOI :
10.1109/APMC.2009.5385440
