24 May 2010


RFMD unveils I/Q converters for wireless backhaul

RF Micro Devices Inc of Greensboro, NC, USA has launched a portfolio of 10.0-16.0GHz GaAs pHEMT I/Q converters, the first in a series of new microwave radio front ends for wireless backhaul applications. The RFUV5945A and RFRX5933A are available in a compact 5mm x 5mm QFN package, and the RFMX5986A in a fully molded 4mm x 4mm QFN package.

The firm says that its growing portfolio of microwave radio front ends helps network operators to quickly and cost-effectively upgrade their backhaul networks to meet the increasing requirements of global mobile data uptake. The broadband frequency performance of the new I/Q converters enables a single product to support multiple radio bands, says RFMD. This enables the use of one part across multiple radio systems, simplifying inventory management. Also, each new I/Q converter features I/Q mixer topologies to reduce unwanted sideband filtering and support IF frequencies from DC to 4GHz, helping to simplify the radio design process.

The broadband RFRX5933A targets receive applications and is an integrated 10–16GHz downconverter comprising a low-noise amplifier (LNA), I/Q image rejection mixer and LO buffer amplifier. The noise figure is 2dB while maintaining 13dB conversion gain, 25dBc of image rejection and IIP3 performance of 3dBm. With an input power of –20dBm, the RFRX5933A has a minimum IMD3 performance of –50dBc.

The RFMX5986A 10–16GHz I/Q image rejection mixer integrates an LO buffer amplifier. Offering a conversion loss of 8dB, 25dBc of image rejection and IIP3 performance of 25dBm, it suits designers wishing to deploy a standalone MMIC or discrete LNA, says RFMD.

The RFUV5945A targets transmit applications and is an integrated 10–60GHz upconverter comprising an I/Q image rejection mixer, LPA and LO buffer amplifier. It delivers OIP3 of up to 24dBm and a conversion gain of 13dB.

RFMD claims that its 10–16GHz I/Q converters deliver levels of integration that enable smaller radio board footprints, decreased design time and automated board assembly, and are suited to both current- and next-generation microwave radio applications.

Samples and pre-production quantities are available now. The RFUV5945A is priced at $19.97, the RFRX5933A at $18.75, and the RFMX5986A at $11.35, each in volumes of 10,000.

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