Mimix Broadband Introduces 20 to 32 GHz GaAs MMIC Receiver for High Index Modulation Schemes

Receiver Comprised of Three Stage LNA and Image Reject Mixer Provides Minimum Distortion

December 6, 2001 Houston, Texas ­ Mimix Broadband announced today the introduction of a Gallium Arsenide (GaAs) monolithic microwave integrated circuit (MMIC) receiver comprised of a three stage low noise amplifier (LNA) followed by an image reject fundamental resistive high electron mobility transistor (HEMT) mixer. The image reject mixer removes the need for a bandpass filter after the LNA to remove thermal noise at the image frequency. Using 0.15 micron gate length GaAs pseudomorphic HEMT (pHEMT) device model technology, this receiver covers the 20 to 32 GHz frequency bands and is well suited to provide minimum distortion for high index modulation schemes.

This receiver, identified as XR1003, has a typical conversion gain of 17 dB with an overall noise figure of 3 dB and 22 dB typical image rejection across the band. The XR1003 is well suited for wireless communications applications such as millimeter-wave point-to-point radio, local multipoint distribution services (LMDS), SATCOM and VSAT applications.

"This receiver is a smaller version of our high performance XR1002," stated Dr. Jim Harvey, CTO of Mimix Broadband. "Even without the variable attenuator of the XR1002, this device still provides excellent third order intermodulation performance at the high receive levels required by the ETSI specifications for point-to-point and point-to-multipoint radios in the 24 to 31 GHz bands."

Mimix performs 100% on-wafer RF and DC testing on the XR1003, 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.

Engineering samples are available today from stock and production quantities are available 12 to 16 weeks after order processing. Technical support is also available from Mimix’s applications engineers at 281.988.4600. Additionally, please visit Mimix’s website (www.mimixbroadband.com) for the XR1003 datasheet and additional product information.

About Mimix Broadband
Mimix Broadband designs, develops and markets high performance Gallium Arsenide (GaAs) monolithic microwave integrated circuits (MMICs) for applications operating at 17 to 44+ GHz. Mimix has assembled a team of world-class scientists that has been 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. Backed by experienced, highly successful stakeholders, Mimix Broadband combines its expertise in overall radio system design to provide comprehensive insight in the technology and issues that its customers confront in designing their products.