2 February 2010


TriQuint and Nujira create record-efficiency 2.1GHz base-station PA

The new TriPower GaAs-based power amplifier (PA) of RF product maker and foundry services provider TriQuint Semiconductor Inc of Hillsboro, OR, USA has been integrated with Coolteq.h envelope tracking power modulator technology from Nujira Ltd of Cambridge, UK to create the what is claimed to be world's most efficient 2.1GHz PA for cellular base stations. The design will be demonstrated at the GSMA Mobile World Congress in Barcelona, Spain (15–18 February).

The design achieves more than 55% efficiency at 2.1GHz (a band widely licensed for cellular networks globally, and one of the most popular bands for LTE and W-CDMA transmissions). The two firms aim to develop further reference designs as TriQuint extends its TriPower family.

“We are committed to working in partnership with the world's leading PA vendors to reduce the carbon footprint and operating cost of the next generation of cellular base stations,” says Nujira’s CEO Tim Haynes. “The new generation of Triquint PAs is their most energy efficient ever, and by integrating it with a Nujira Coolteq.h module we have set a new benchmark for transmission energy efficiency at 2.1GHz,” he claims.

“TriPower technology is perfectly suited for integration with Nujira Coolteq.h envelope tracking power modulator modules to deliver best-in-class base-station power efficiency,” reckons Gary Lerude, TriQuint’s Networks senior product marketing director. “These two technologies are a powerful combination that will help base-station vendors in their drive to reduce their total cost of ownership and CO2 emissions while simultaneously offering higher-power amplifiers for remote radio head and other base-station designs,” he adds.

The 2.1 GHz PA test fixture combines the Coolteq.h modulator with a TriPower TG2H214120 device (which is also being announced at GSMA Mobile World Congress). The fixture achieves 56% efficiency at the 2.1GHz LTE bandwidth W-CDMA signals (6.5dB PAR) and 52% with LTE signals (8.5dB PAR).

See related item:

TriQuint’s new TriPower GaAs HV-HBT RF transistors offer 55% efficiency for 3G/4G base-station amplifiers

Search: TriQuint GaAs PAs Nujira Cellular base stations