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Third-order intermodulation distortion in microwave amplifier

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2 Author(s)
Agarwal, K.K. ; Bell Laboratories, North Andover, USA ; Kuo, Y.L.

Third-order intermodulation distortions of a microwave GaAs f.e.t. amplifier are analysed using a simple nonlinear model for the device. If the amplifier has strong feedback at low frequencies, the second-order interactions may dominate and degrade the third-order distortions. Solutions are presented to eliminate this distortion degradation. The analysis is very well substantiated by measurements.

Published in:

Electronics Letters  (Volume:14 ,  Issue: 9 )