21st November 2006

WJ Communications First With 28V InGaP HBT Power Amps

WJ Communications has launched a new family of RF power amplifier modules, using what it claims is the industry's first 28V InGaP HBT process technology to achieve linearity across the 800-2200MHz frequency range.

The AP601, AP602, and AP603 power amplifiers are developed on WJ Communications' proprietary 28V InGaP HBT (GaAs) process. The AP60x products are well suited for driver stage applications in wireless infrastructure equipment such as cellular basestation, power amplifier boards and repeaters. In addition to the superior performance there are several key features such as the integrated active bias circuit and adjustable quiescent bias that provide greater flexibility for designers.

Utilizing the company's RF expertise and position in developing pre-driver and small signal amplifiers combined with the partnerships with technology companies, the company has developed the AP60x products to fill a void in the market space for driver stage power amplifiers that offer a high level of linearity and efficiency while operating off 28V supply.
The AP60x is a suitable solution for the requirements of 3G applications. The AP60x power amplifiers serve the 1 to 10W driver stage that has long been neglected and provides a fresh outlook into the market. The AP60x products also house it in a plastic package, 5 x 6mm 14-lead DFN package, which enables the use of standard surface mount technology to place the products onto a circuit board.

Unlike other power amplifiers in the market today, heat sinks or cut-outs on the PCB are not needed because of the higher efficiencies and thus lower operating currents which results in less heat dissipated. This feature provides more value to wireless infrastructure equipment makers since they do not need to do any post manual assembly work. Key features of the AP60x power amplifiers include high linearity, high efficiency, integrated active bias circuitry, adjustable quiescent bias, high voltage supply, DFN package, and simplified PCB layout.

The AP60x series and their respective evaluation boards are sampling now and it will be in full production beginning November 9, 2006.

Web: www.wj.com