Title :
Intermodulation Distortion in Microwave MESFET Amplifiers
Author :
Gupta, R.K. ; Englefield, C.G. ; Goud, P.A.
fDate :
April 30 1979-May 2 1979
Abstract :
The third-order intermodulation distortion (IM/sub 3/) of a MESFET amplifier has been analysed using Volterra series representation. A model is described that takes into account the MESFET nonlinearities and their interaction with the surrounding microwave circuit. A theoretical and experimental study of the amplifier intermodulation products has been conducted. Their dependence on the input frequency and power-level of a two-tone test signal is investigated. For power inputs less than -10 dBm, the agreement obtained between measured and predicted IM/sub 3/ is within 3-dB over an amplifier bandwidth of 400 MHz.
Keywords :
Bandwidth; Capacitance; Fixtures; Frequency measurement; Intermodulation distortion; MESFETs; Microwave amplifiers; Microwave circuits; Scattering parameters; Voltage;
Conference_Titel :
Microwave Symposium Digest, 1979 IEEE MTT-S International
Conference_Location :
Orlando, FL, USA
DOI :
10.1109/MWSYM.1979.1124083
