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Mimix's integrated Rx/Tx chipset targets 18GHz to 25GHz

Posted: 11 Aug 2005 ?? ?Print Version ?Bookmark and Share

Keywords:mimix broadband? xr1006? xu1002? gallium arsenide? gaas?

Mimix Broadband Inc. announced the introduction of gallium arsenide (GaAs) monolithic microwave integrated circuit (mmic) sub-harmonically pumped receiver and transmitter devices, that integrate an image reject sub-harmonic anti-parallel diode mixer, an LO buffer amplifier and a low noise amplifier for the receiver, and an output amplifier for the transmitter.

The image reject mixer eliminates the need for an image bandpass filter after the amplifier to remove thermal noise at the image frequency. Using 0.15?m gate length GaAs pseudomorphic high electron mobility transistor (pHEMT) device model technology, these devices cover the 18GHz to 25GHz frequency bands. The receiver has a noise figure of 2.5dB and 15dB image rejection across the band. The transmitter has a 20dBm output third order intercept point (OIP3) and 15dB image rejection across the band.

This receiver and transmitter pair, identified as XR1006 and XU1002 respectively, are well suited for wireless communications applications such as millimeter-wave point-to-point radio, local multipoint distribution services (LMDS), SATCOM and VSAT applications.

"These highly integrated parts significantly lower the millimeter-wave chip count in microwave radios," stated Dr. Jim Harvey, CTO of Mimix. "Each part replaces three or four separate functions, improving manufacturability and lowering assembly and parts cost, and they are important additions to the Mimix 3-chip solution."

Mimix performs 100 percent on-wafer RF and DC on these products, as well as 100 percent visual inspection to MIL-STD-883 method 2010. The chips also have surface passivation to protect and provide rugged parts with backside via holes and gold metallization to allow either a conductive epoxy or eutectic solder die attach process.

Engineering samples and small production quantities are available today from stock.

- Janine Love


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