Guerrilla RF Introduces Linear Power Amplifiers for 4G/5G Wireless Infrastructure Applications

Guerrilla RF has introduced two of ten new ¼ W linear power amplifiers being released as part of the company’s expansion into the cellular market. These new InGaP HBT amplifiers were 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 800-900MHz and 880-960MHz, the GRF5508 and  GRF5510 are tuned to operate within the n5, n8, n18, n20, and n26 5G new radio (NR) bands. The amplifiers can deliver 24dBm of linear power over the entire -40°C to 85°C temperature range while maintaining ACLR levels of better than -45 dBc, IMD3 levels < -17dBm, EVM levels <  1%, and PAE Efficiencies > 14% – all without the aid of supplemental linearization schemes like digital pre-distortion (DPD).

The ability to beat the -45 dBc 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 prohibit the use of elaborate linearization techniques like DPD. Instead, designers must rely on the power amplifier’s native linearity to meet the stringent emissions mask requirements imposed by the latest 5G and 4G standards.

During the development of the GRF55xx Series, Guerrilla RF consulted directly with its base of customers to ensure the devices delivered the best blend of power and linearity, thus maximizing the effective range and throughput for their cellular systems. Guerrilla RF also designed the entire family of devices to be fully footprint compatible, enabling its customer base to rapidly customize their designs for a myriad of cellular frequencies.

The GRF55xx family builds upon the groundbreaking work which they started a year ago with the release of the GRF5504/9 Series of 5W InGaP HBT power amplifiers. These new ¼ W PAs were created specifically to meet the needs of our strategic customers in the cellular and automotive industries. 

The GRF55xx family is available in pin-compatible 3mm x 3mm, 16-pin QFN packages. As noted above, the common footprint enables a single design to address multiple bands via simple component swaps.

Click here to learn more about GRF5508.

Click here to learn more about GRF5510.