Physics
Scientific paper
Mar 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ijimw..29..272z&link_type=abstract
International Journal of Infrared and Millimeter Waves, Volume 29, Issue 3, pp.272-281
Physics
1
Mutual Coupling, Millimeter Wave Oscillators, Voltage Controlled Oscillators (Vcos), Radial Line Transformers(Rlts), Mode Matching Methods
Scientific paper
In the design of millimeter wave voltage control oscillators (VCOs), mutual coupling effect is of great importance for it influences the tuning and power characteristics of VCOs significantly. In this paper, mutual coupling between two in-line radial line transformers (RLTs) in rectangular waveguide cavities of millimeter wave VCOs has been evaluated with mode matching methods. Mutual coupling characteristics varying with various parameters of resonate cavity such as the distance between two diodes, the position of sliding short, the radii of bias pins, the radii of RLTs, and the height of diodes are presented. Some useful conclusions concerning two RLTs configuration have been derived, which is helpful to design millimeter wave VCO of this structure.
Wu Tao
Xu Jinping
Zhu Dalong
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