RF MICRO DEVICES INTRODUCES MODULATOR FOR TETRA SYSTEMS.

RF Micro Devices, Inc. (Nasdaq: RFMD), a provider of proprietary radio frequency integrated circuits (RFICs) for wireless communications applications has announced the introduction of the RF2485 quadrature modulator for Terrestrial Trunked Radio (TETRA) systems.

"This modulator addresses the needs of TETRA base station and handset designers, and is a strong addition to RFMD's family of high-performance modulators," said MaryBeth Healy, marketing manager for digital cellular products at RFMD. "The introduction of this TETRA product is an example of RFMD's continued dedication to providing products for a variety of wireless standards."

Designed for TETRA use in the 200 to 600 MHz band, the RF2485 features a broadband noise floor of -149 dBm/Hz typical at 5 MHz offset along with ACPR of -48 dBc typical at 25 kHz. The RF2485 operates from a single 5V power supply and contains all of the required components to implement the modulation function including differential amplifiers for the baseband inputs, a 90 degree hybrid phase splitter, limiting LO amplifiers, two balanced mixers, a combining amplifier and an output RF amplifier which will drive a 50 ohm load.

Typical applications for the RF2485 include digital and spread spectrum systems; GMSK, QPSK, DQPSK and QAM modulation; private mobile radio and TETRA systems; AM, SSB, DSB modulation and image-reject up-converters.

Manufactured using GaAs MESFET process technology, the RF2485 is offered in a SOIC-14 package. Priced at $2.90 in quantities of 10,000 units, production components will be ready for shipment in March 2001 from RFMD. Samples and fully assembled evaluation boards are available now.

For a complete listing of RFMD(R) products and services, refer to the company's Designer's Handbook. Free copies in print or CD-ROM format are available directly from RFMD by calling 336.664.1233, extension 6655, or sending an e-mail request to [e-mail].