Intermodulation distortion improvement by active compensation in impatt amplifiers

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Intermodulation distortion improvement by active compensation in impatt amplifiers

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© The Institution of Electrical Engineers
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The letter discusses how the intermodulation distortion in impatt diode amplifiers can be improved significantly by active compensation. Theoretical evaluation based on a large-signal impatt diode model predicts considerable improvement in the intermodulation behaviour; in particular, the improvement in the third-order intercept point is found to be in excess of 12 dB.

Inspec keywords: electric distortion; microwave amplifiers; IMPATT diodes; intermodulation

Other keywords: third-order intercept point; intermodulation distortion; active compensation; IMPATT amplifiers; large-signal IMPATT diode model

Subjects: Solid-state microwave circuits and devices; Amplifiers

References

    1. 1)
      • C.S. Aitchison , A.S. Bains . Intermodulation distortion improvement by active compensation in an X-band impatt amplifier. Electron. Lett. , 474 - 475
    2. 2)
      • M.S. Gupta . Large-signal equivalent circuit for Impatt-diode characterisation and its application to amplifiers. IEEE Trans. , 689 - 694
    3. 3)
      • A. Riris , C.S. Aitchison . Linearity and efficiency improvement by active compensation in impatt amplifiers. Electron. Lett. , 189 - 190
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