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Low-phase-noise Gunn diode oscillator design

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3 Author(s)
R. A. Strangeway ; Dept. of Electr. Eng. & Comput. Sci., Marquette Univ., Milwaukee, WI, USA ; T. K. Ishii ; J. S. Hyde

Low-phase-noise Gunn diode oscillators with an operating frequency of 35 GHz and an output power of 100 mW are designed, fabricated, and tested. The phase noise is -132 dBc/Hz to -125 dBc/Hz at 100-kHz offset from the center frequency. This low phase noise is obtained by closely coupling the stabilizing transmission cavity resonator and the Gunn-diode-oscillator coaxial line while loosely coupling the transmission cavity to the output waveguide following van der Heyden's approach

Published in:

IEEE Transactions on Microwave Theory and Techniques  (Volume:36 ,  Issue: 4 )