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RF transistors for broadband apps debut

Posted: 27 Nov 2008     Print Version  Bookmark and Share

Keywords:RF transistor  broadband applications  RF networks  high power 

PowerBand family

TriQuint Semiconductor has introduced a new high power discrete RF transistor family for broadband applications including radar, signal jammers and wireless communications.

TriQuint's new PowerBand family was unveiled at the MILCOM military communications conference and exhibition at the San Diego Convention Center, USA.

PowerBand devices deliver high power performance across a wide bandwidth while maintaining high efficiency. Previous broadband market solutions have traded-off performance to achieve relative wide-band service but TriQuint's PowerBand innovation achieves bandwidth coverage without sacrificing efficiency or other key performance parameters.

"PowerBand changes the wireless equation, creating an opportunity to save a tremendous amount of space, cost and energy. Because PowerBand efficiently delivers high power across unprecedented bandwidth, an RF design may require only one transistor line-up instead of several. This fact directly impacts the bill of materials and size of end user products by substantially reducing space dedicated to RF," explained TriQuint President and CEO Ralph Quinsey.

Bill McCalpin, PowerBand Co-Inventor and General Manager, TriQuint Colorado Design Center, said: "A traditional high power RF transistor is designed to operate across a narrow frequency range, such as 2.53—2.65 GHz. Within that range it delivers power relatively efficiently. But as bandwidth increases, performance falls. PowerBand is totally different in its ability to deliver high power—up to 50Watts—and high efficiency performance—50 per cent PAE, typical—across a much wider frequency range, from 500 MHz to 3 GHz."

Many broadband defence and military programs could benefit from TriQuint's new technology. In typical applications, one PowerBand transistor amplifier line-up (containing 2-4 devices) covering an entire band could replace three or more traditional transistor amplifier line-ups (containing 2-4 devices). In a typical application, 2-4 PowerBand devices could replace between 6 and 12 conventional RF transistors.

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