Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001jass...18..119k&link_type=abstract
Journal of Astronomy and Space Science, vol. 18, no. 2, p. 119-128
Astronomy and Astrophysics
Astronomy
Heterodyne Receivers, Oscillators, Gunn Effect Devices
Scientific paper
The oscillation frequency tuning range of waveguide Gunn oscillator and its stability depend sensitively on the dimensions of the resonator. Therefore the embedding impedances with the various dimensions of the resonator for Q-band (33~50 GHz) Gunn oscillator are calculated by using HFSS (High Frequency Structure Simulator). In this paper the comparisons between theoretical results of embedding impedances as a function of frequency and that of experimental results are described. And the oscillation frequency range could be predicted by using the theoretical evaluation methods which were proposed in this paper. It shows that post size has an effect on the frequency tuning characteristics of Gunn oscillator.
Chung Moon-Hee
Han Seog Tae
Kim Hyun-Joo
Kim Kwang-Dong
Kim Tai-Seong
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