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Power amps improve WiMAX apps signal quality

Posted: 12 Mar 2010 ?? ?Print Version ?Bookmark and Share

Keywords:power amplifier? WiMAX? Wi-Fi?

MGA-43x28 PAs

From Avago Technologies come two high linear power amplifier (PA) modules that feature low power consumption and improves signal quality for WiMAX and WiFi applications that operate in the 2GHz range.

The PA series features high linear Pout for good linearity and low distortion, high power added efficiency, 0as well as input and output pre-match for matching and application simplicity. Avago's MGA-43x28 PA module series, which are housed in a miniature 5mm x 5mm x 0.85mm package, are suitable for use as a final stage PA in a wide range of high-power WiMAX, WLAN and LTE applications which operate in the 2300 to 2700MHz spectrum.

The MGA-43x28 PA modules have the same package footprint, pin-out and external matching network to allow a common PCB design when used at different frequencies. Additionally, this series of PAs from Avago comes with an integrated bypass switch controlled attenuator which provides attenuation of ~24.0dB, along with a built-in power detector. In a typical operating environment of 5-volts and 1 Amp, the MGA-43228 delivers performance of 29.1dBm linear Pout at 2.5 percent error vector magnitude (EVM), 38.5dB gain and 16 percent PAE at 2400MHz. Under the same operating conditions, the MGA-43328 delivers a performance of 29.3dBm linear Pout at 2.5 percent EVM, 37.3dB gain and 16 percent PAE at 2600 MHz. These features enable the MGA-43x28 series PAs to provide superior signal quality for computer performance evaluation (CPE) while transmitting at a higher throughput to reduce power consumption.

The PAs feature advanced GaAs E-pHEMT technology, 5V power supply (can be used at 3.3V for lower supply voltage applications) and built-in detector and shutdown switches.

Avago's MGA-43228 and MGA-43328 PAs are priced at $7.49 each in minimum quantities of 1,000. Samples and production quantities are available now through Avago's direct sales channel and worldwide distribution partners.

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