Guerrilla RF unveils new PAs delivering native linearity

Guerrilla RF has introduced the GRF5517, GRF5518 and GRF5519, three new ¼ W linear power amplifiers being released as part of the company’s expansion into the cellular market.

These new InGaP HBT amplifiers have been designed specifically for 5G/4G wireless infrastructure applications requiring exceptional native linearity over temperature extremes of -40°C to 85°C.

Spanning frequency ranges of 1.7–1.8GHz, 1.8-1.91GHz and 1.92-2.0GHz respectively, the GRF5517, GRF5518 and GRF5519 are tuned to operate within the n1, n2, n3, n25, n39, n65, n66, and n70 5G new radio (NR) bands.

The devices typically deliver 23dBm of linear power over the entire -40°C to 85°C temperature range while maintaining ACLR levels of better than -45dBc, IMD3 levels < -20dBm, EVM levels < 1.5% and PAE Efficiencies > 14% – all of which is achieved without the aid of supplemental linearization schemes like digital pre-distortion (DPD).

The ability to beat the -45dBc ACLR performance metric without DPD is critical for cellular applications like home and commercial repeaters/boosters, femtocells, picocells and cable loss compensators associated with automotive ‘shark fin’ antennas. In each of these use cases, the sensitivity to cost, power and size constraints prohibits the use of elaborate linearization techniques like DPD. Instead, designers have to rely on the power amplifier’s native linearity to meet the stringent emissions mask requirements imposed by the latest 5G and 4G standards.

Guerrilla RF has designed the entire family of devices to be fully footprint compatible, enabling customers to rapidly customise their designs for a myriad of cellular frequencies.

The GRF55xx family comes in pin-compatible 3mm x 3mm, 16-pin QFN packages.