Simple TRAPATT circuit for 2nd-harmonic extraction

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Simple TRAPATT circuit for 2nd-harmonic extraction

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An efficient 2nd-harmonic-extraction coaxial TRAPATT oscillator is described. The oscillator consists of two low-impedance sections that essentially control the 2nd-harmonic load and reactive terminations. A peak power output of 25 W at 5.2 GHz is reported from an S band silicon p+–n–n+ TRAPATT diode.

Inspec keywords: solid-state microwave circuits; transit time devices; harmonic generation; avalanche diodes; microwave oscillators

Other keywords: reactive termination; S-band silicon p+-n-n+ TRAPATT diode; 2nd-Harmonic extraction; TRAPATT circuit; 2nd harmonic load termination

Subjects: Junction and barrier diodes; Solid-state microwave circuits and devices; Oscillators

References

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      • Liu, S.G.: `High power harmonic-extraction and triggered-amplification with high efficiency avalanche diodes', IEEE international solid-state circuits conference, 1971.
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      • D.E. Iglesias . Circuits for testing high efficiency IMPATT diodes. Proc. Inst. Elec. Electron. Eng. , 2065 - 2066
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      • W.J. Evans . Circuits for high efficiency avalanche-diode oscillator. IEEE Trans. , 1060 - 1067
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      • N.A. Slaymaker , J.E. Carroll , R.H. de Boise . Efficient power extraction at TRAPATT harmonics. Electron. Lett. , 744 - 746
    5. 5)
      • Welch, J.D.: `Load impedance characteristics of TRAPATT oscillator', 96, Technical report, 1973, AD-776 773.
    6. 6)
      • C.P. Snapp . Sub-harmonic generation and the trapped-plasma mode in avalanching silicon p+nn+ junctions. IEEE Trans. , 294 - 308
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      • C.D. Corbey , J.G. Summers . (1974) High efficiency pulsed TRAPATT sources at 2 to 5GHz, MRL annual review.
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Erratum: Simple TRAPATT circuit for 2nd-harmonic extraction