Gunn oscillator with supporting heat sink interference fitted into waveguide structure

摘要

An oscillator body 10 defines a waveguide 11 in which is supported a Gunn diode 15. The Gunn diode 15 is thermally and electrically connected to a surface of a heat sink having a cylindrical main body 40 which is supported in the body 10 by an interference or tight sliding fit. A screw cap 46 may be used to retain the heat sink in the body 10. Use of an interference or tight sliding fit to support the heat sink in the body 10 eliminates concentricity variation problems, which may cause frequency pulling, encountered in the prior art and increases susceptibility to automated mass production.