Wideband HEMT MMIC low-noise amplifier with temperaturecompensation |
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Authors: | Long AP Holmes SJ Wallis RH |
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Affiliation: | GEC-Marconi Mater. Technol. Ltd., Towcester; |
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Abstract: | A wideband low-noise pseudomorphic HEMT MMIC variable-gain amplifier has been designed and fabricated. The amplifier has a nominal gain of 13 dB across the band 2-20 GHz, with gain flatness better than ±0.4 dB. The noise figure is less than 3 dB across the band 6-16 GHz. An on-chip temperature-sensing diode is used to provide a linear temperature correction which has been used to reduce the gain variation of the amplifier by a factor of 2 across the temperature range -50°C to +95°C |
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