CANNES, France--Prior to the opening of a cellular phone trade show here, Tropian Inc. today announced it was collaborating with Agilent Technologies Inc. to jointly demonstrate a radio-frequency transmitter for GSM/GPRS/Edge handsets. Silicon Valley-based Tropian also announced a partnership with Silicon Laboratories Inc. to offer the industry's first tri-band E-GPRS radio transceiver reference-design platform.
The examples of transceiver boards and demonstration of RF transmitter solutions will be on display at the 3GSM World Congress in Cannes, beginning on Tuesday. The four-day conference focuses on technologies for next-generation Global System for Mobile (GSM) and general packet radio service (GPRS) cell phones.
Tropian of Cupertino, Calif., said it has paired up its TimeStar Polar Impact modulator IC with Agilent's E-pHEMT power amplifier modules to simplify RF transmitters for multi-band, multi-mode handsets that are used in GSM, Edge (Enhanced Data Rates for GSM Evolution) and TDMA (time division multiple access) carrier networks. The company said this platform can be used for handsets providing GSM, GPRS, Edge, and TDMA modulation formats in the 850- and 1,900-MHz bands for the Americas' TDMA/GSM carriers, and the 900- and 1,800-MHz bands for European and Asian carriers.
Tropian and Agilent said they will be jointly promoting the chip set solution.
Meanwhile, Tropian said it collaborated with Austin, Tex.-based Silicon Laboratories to create a "breakthrough" reference design to receive and transmit Edge-based wireless communications. The design is the first to do that, according to Michael Farese, president and CEO of Tropian.
"This design enables a cell phone to provide third-generation, high-speed wireless data services, while still being backwards compatible with existing voice services," Farese said.
The all-CMOS design platform is based on Tropian's TimeStar modulator and Silicon Laboratories' Aero transceiver. The complete E-GPRS solution for GSM/GPRS/Edge phones includes the transmitter and receiver ICs, band-select filters for the receiver, a power amplifier module, an antenna switch, power management, and a 26-MHz reference. The current configuration can operate in the 900/1800/1900-MHz band or the 850/1800/1900-MHz band, said the two companies.
Tropian and Silicon Laboratories said their tri-band, dual-mode transceiver design requires less space than existing dual-band, single-mode GSM/GPRS solutions.