Product Releases

36 to 40 GHz GaAs MMIC Up-Converter

Mon, 12/03/2001 - 3:38am


Mimix Broadband announced the introduction of a gallium arsenide (GaAs) monolithic microwave integrated circuit (MMIC) up-converter, which is comprised of a pair of sub-harmonic mixers configured to form an image reject mixer. This is followed by a two stage low noise amplifier (LNA). The image reject mixer removes the need for a bandpass filter after the mixer to suppress the unwanted sideband. The use of the sub-harmonic mixer makes the provision of the LO easier than for fundamental mixers at these frequencies.

Using 0.15 micron gate length GaAs pseudomorphic high electron mobility transistor (pHEMT) device model technology, this up-converter, identified as XU1001, covers the 36 to 40 GHz frequency bands. The XU1001 has a typical small signal gain of 4 dB with a 35 dB typical LO/RF isolation. This device is well suited for wireless communications applications such as millimeter-wave point-to-point radio, local multipoint distribution services (LMDS), SATCOM and VSAT applications.

Mimix performs 100% on-wafer RF, DC and output power testing on the XU1001, as well as 100% visual inspection to MIL-STD-883 method 2010. The chip also has surface passivation to protect and provide a rugged part with backside via holes and gold metallization to allow either a conductive epoxy or eutectic solder die attach process.


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