New broadband pre-driver for wireless infrastructure

Guerrilla RF, Inc. has released its new GRF5112, a highly linear, broadband power amplifier that delivers excellent compression performance over large fractional bandwidths of up to 40%. The device's broad, single-tuned responses allow multicarrier base stations to simultaneously transmit across two or more cellular bands using a single RF lineup.

"The GRF5112 is another example of Guerrilla RF constantly working to improve its driver amplifier offering," says Jim Ahne, vice president of marketing at Guerrilla RF. "Building upon the GRF5115 core, this latest iteration streamlines tuning while ensuring consistent performance across process and temperature variations. Our design team has also integrated additional tuning handles within the core to optimise linearity for specific bands and bias conditions."

The device can be tuned to operate over select bands within the 30MHz to 2700MHz frequency range. When operated at 1.8GHz, the device delivers 17.1dB of gain, 32.2dBm of OP1dB compression, 40dBm of OIP3 linearity, and a low noise figure of 1.7dB (as measured on the device's standard evaluation board; de-embedded NF values are approximately 0.2dB lower). Like other GRF amplifier cores, the device features a flexible biasing architecture allowing customisable trade-offs between linearity and power consumption. Supply voltages can vary between 1.8V and 5.25V, although most customers will use a standard 5V supply with 212mA of biasing current.

Packaged in a compact 3mm x 3mm QFN-16 package, the device shares a pinout and matching layout with many of the company's linear drivers and power amplifier cores.