Wideband HEMT balanced amplifier
1986
The high electron mobility transistor (HEMT) has demonstrated great potential for high-gain and low-noise applications, achieving a noise figure and current gain cutoff frequency fT superior to that of the GaAs MESFET. The letter presents the practical use of an HEMT in a hybrid wideband balanced amplifier covering 8.5 to 16 GHz producing 9.7 ± 0.5 dB gain and 2.6 dB midband noise figure. The performance is also compared to a GaAs MESFET stage.
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