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A Low-Noise and Wide-Band Esaki Diode Amplifier with a Comparatively High Negative Conductance Diode at 1.3 Gc/s

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1 Author(s)

This paper discusses the stability problem, output power, saturation level, and noise figure of Esaki diode amplifiers, and describes design considerations of the broadband circulator type amplifier with a large negative conductance diode. An experimental amplifier with a diode which has a negative resistance of -25 ohms is also described. The amplifier has a 3 dB bandwidth of 20 per cent, 18 dB gain, and a 3.6 dB noise figure including 0.3 dB insertion loss of the circulator. The output level for which the gain is 1 dB lower than the small signal gain is -17 dBm. These experimental results are in fair agreement with those estimated theoreticaly.

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:13 ,  Issue: 2 )