Mimix Broadband, Inc. Introduces 18 to 25 GHz GaAs MMIC Sub-harmonically Pumped Receiver and Transmitter Chip Set

Single Chip Devices Integrate Image Reject Mixer, LO Buffer and Amplifier

July 18, 2005, Houston, Texas - Mimix Broadband, Inc. announced today the introduction of Gallium Arsenide (GaAs) monolithic microwave integrated circuit (MMIC) sub-harmonically pumped receiver and transmitter devices, which 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 micron gate length GaAs pseudomorphic high electron mobility transistor (pHEMT) device model technology, these devices cover the 18 to 25 GHz frequency bands. The receiver has a noise figure of 2.5 dB and 15 dB image rejection across the band. The transmitter has a +20 dBm output third order intercept point (OIP3) and 15 dB 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 Broadband, Inc. "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% on-wafer RF and DC on these products, as well as 100% 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 production. Technical support is also available from Mimix's applications engineers at 281.988.4600. The datasheets and additional product information can be obtained from the Mimix Broadband website at www.mimixbroadband.com.

About Mimix
Mimix Broadband, Inc., an ISO 9001-registered company, designs, develops and supplies high performance monolithic microwave integrated circuits (MMICs) for microwave and millimeter-wave wireless communications applications. Mimix has assembled a team of world-class scientists that has focused on the development of state-of-the-art millimeter-wave MMICs for the last decade. The Company also leverages strategic partnerships for manufacturing, in order to expedite the time-to-market cycle and meet market requirements. Due in part to its recent acquisition of Celeritek, Mimix offers a highly diversified product line that serves the top tier telecom, satellite and defense companies, and Mimix combines its design capabilities in complete communications systems with semiconductor device expertise to deliver innovative solutions for its customers' most challenging applications.