Analysis of Millimeter Wave Varactor-Tuned Gunn Oscillator Stabilized with a Transmission Cavity |
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Authors: | Dalong Zhu Jinping Xu |
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Affiliation: | (1) State Key Lab. of Millimeter Waves, Southeast University, Nanjing, 210096, Peoples Republic of China |
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Abstract: | A novel circuit architecture which describes millimeter wave varactor-tuned Gunn oscillator stabilized with a transmission
cavity has been proposed in this paper. A corresponding equivalent circuit model has been presented in order to study its
performance characteristics. The circuit model consists of four parts which are varactor cavity, main cavity, transmission
waveguide and transmission cavity. Based upon this model, electrical tuning characteristics have been studied at first. Mode
jumping problems during electrical tuning process have been analyzed qualitatively. Moreover, quality factor and efficiency
of the circuit model have been derived by virtue of relevant circuit parameters. The effects of some important circuit parameters
affecting circuit performance parameters have been discussed. The circuit model can describe the circuit architecture accurately
and effectively. This circuit architecture, which can generate signals exhibiting low frequency modulation noise, high frequency
stabilization and electrical tunable characteristics, is applicable to various practical situations. |
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Keywords: | Millimeter wave Varactor-tuned Gunn oscillator Transmission cavity Electrical tuning characteristics Quality factor Efficiency |
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