Fundamental and Harmonic Operation of Millimeter-Wave Gunn Diodes

Pulsed and CW measurements in the range 26-110 GHz were performed on gallium arsenide (GaAs) Gunn diodes having active lengths of 1.8-2.6 µm, bonded into commercially available packages. The diodes were operated in full-height waveguides in the V-(WR-15), E-(WR-12), and W-(WR- 10) bands, using coaxial-bias circuits aud a disc-post resonator to provide the required resonance at their fundamental frequency in the range from about 25-65 GHz. Frequency and power measurements were performed up to 110 GHz on the fundamental, second, and third harmonics. The main emphasis of this experimental investigation has been the study of frequency changes caused by changes made in the various parameters of the disc, post, diode, diode package, and embedding waveguide sections.

[1]  T. A. Midford,et al.  Millimeter-Wave CW IMPATT Diodes and Oscillators , 1979 .

[2]  H. W. Thim,et al.  Computer simulation of transferred electron devices using the displaced Maxwellian approach , 1974 .

[3]  W. Haydl.  Harmonic operation of GaAs millimetre wave transferred electron oscillators , 1981 .

[4]  E. Constant,et al.  Frequency limitation of GaAs transferred-electron devices: influence of operating d.c. and r.f. field values , 1979 .

[5]  C. P. Jethwa,et al.  An Analytical Equivalent Circuit Representation for Waveguide-Mounted Gunn Oscillators , 1972 .

[6]  W. Reinert,et al.  Cryogenic 90 GHz Receiver For Airborne Radiometry , 1980, 1980 IEEE MTT-S International Microwave symposium Digest.

[7]  Performance of P-type epitaxial silicon millimeter-wave IMPATT diodes , 1974 .

[8]  D. M. Brookbanks,et al.  Operating modes of millimetre wave transferred electron oscillators , 1981 .

[9]  Karl-Heinz Döring,et al.  High transformation ratio for impedance matching with a radial line , 1980 .

[10]  I. Groves,et al.  Resonant-cap structures for IMPATT diodes , 1972 .

[11]  T. Ruttan.  Gunn-diode oscillator at 95 GHz , 1975 .

[12]  W. Haydl,et al.  Waveguide/resonant-disc circuits for millimetre-wave devices , 1982 .

[13]  H. Barth,et al.  A Wideband, Backshort-Tunable Second Harmonic W-Band Gunn-Oscillator , 1981, 1981 IEEE MTT-S International Microwave Symposium Digest.

[14]  R. N. Bates.  Determination of resonant frequency for 2nd-harmonic-mode millimetre-wave transferred-electron oscillators , 1982 .

[15]  A. M. Mazzone,et al.  Transferred-electron oscillators at very high frequencies , 1981 .