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GaAs HEMTs for low frequency applications

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rmathur

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I am designing a low noise amplifier. This amplifier need to go to cryogenic temperatures < 4Kelvin. Thus, i picked up GaAs HEMTs from Fujitsu (now Eudyna). My bandwidth of interest is 1KHz to 10 MHz and these devices are recommended to be used for High GHz range. Do i have any other options as far as selecting the transistors go?
 

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