Ampleon has announced the G1M3438P70C, a fully integrated 70 W GaN Doherty power amplifier module designed to meet the demanding performance and integration requirements of 5G massive MIMO base stations. Covering the 3.4 GHz to 3.8 GHz frequency range, the amplifier combines high RF performance with advanced bias control and monitoring capabilities, enabling simplified system design while achieving high efficiency, high gain, linearity, and reliability.
As 5G infrastructure continues to evolve, RF designers face increasing complexity in balancing efficiency, bandwidth, linearity, and system integration, particularly in multi-carrier massive MIMO architectures. Traditional discrete approaches require extensive bias tuning, thermal compensation, and system-level control, adding design overhead and increasing time to market. The G1M3438P70C addresses these challenges by integrating a Doherty power amplifier with an intelligent bias control IC, delivering a pre-configured, fully tested PA solution that reduces design effort while maintaining consistent performance across operating conditions.
At the core of the module is an advanced GaN Doherty architecture capable of delivering peak output power of approximately 48 dBm with typical drain efficiency around 48 % at 39 dBm average output power, alongside gain levels of 30 dB across the band. The device supports wide instantaneous bandwidth operation up to 400 MHz and demonstrates excellent gain flatness and linearity, making it well suited for modern high-PAR 5G signals and multi-carrier operation.
A key differentiator of the G1M3438P70C is its integrated bias controller, which includes a pre-configured look-up table and independent DACs to enable autonomous gate voltage regulation over temperature. This allows the module to maintain optimal bias conditions without external calibration, significantly reducing system complexity and ensuring stable performance across varying thermal environments. The integrated temperature sensor, monitoring functions, and failure reporting system further enhance reliability by enabling real-time system awareness and protection.
The module also provides seamless system integration through 50 Ω input and output matching, eliminating the need for complex external matching networks. Its compact 12 mm x 8 mm LGA package enables high power density and efficient board-level implementation, supporting the scaling requirements of massive MIMO radio units.
Designed for real-world deployment, the G1M3438P70C offers strong ruggedness, including the ability to withstand load mismatch conditions up to 10:1 VSWR under defined operating conditions, ensuring reliable operation even in dynamic RF environments. Combined with fast TDD gate switching and I²C-based configurability, the module provides the flexibility required for both TDD and FDD system architectures.
The G1M3438P70C is now available through Ampleon’s global distribution network. For pricing and ordering information, please contact your local Ampleon sales representative or preferred distributor.
Click here to learn more about G1M3438P70C from Ampleon.
