Qorvo in conjunction with NanoSemi, have demonstrated ultra-wideband linearization results with their Gallium Nitride (GaN) power amplifiers for wireless infrastructure. NanoSemi is a leading developer of digital linearization and compensation algorithms.
The QPA2705 from Qorvo is an integrated GaN driver and GaN Doherty power amplifier with 30 dB gain, P3dB of 44 dBm, PAE of 35% at 37 dBm average output power in a compact 6x10 mm surface mount package for next generation massive MIMO applications. Using this amplifier with NanoSemi's proprietary digital compensation algorithms, they have achieved impressive results.
Leading cellular operators are enhancing wireless spectrum efficiency and boosting network capacity by more than 500% by adopting technologies including Massive Multi-input Multi-output (MIMO), Active Antenna Systems (AAS) and LTE-Pro. Active Antenna Systems with 64 transceivers pose significant challenges to design power amplifiers with the small form factors, high efficiency and linearity needed for multi-carrier configurations. By combining Qorvo's ultra-compact, advanced power amplifier (PA) modules with NanoSemi's Digital Pre-distortion (DPD) intellectual property, operators are able to implement highly efficient, small form-factor Massive MIMO transceivers for next-generation base stations.
They have also demonstrated linearization of the QPA2705 cascaded Doherty driver amplifier and QPD2730 dual-channel GaN Doherty PA final stage with -58 dBc for 60 MHz LTE signals, and -55 dBc for 100 MHz LTE signals.
Qorvo is demonstrating their GaN power amplifiers for base station infrastructure at Booth 839 at the IEEE International Microwave Symposium (IMS), in San Francisco from May 24-26.
