High-Gain Drivers Serve 5G mMIMO Applications
Guerrilla RF unveiled two high-gain, high-linearity driver amplifiers designed specifically for 5G mMIMO transmitters, with a rated operating range of 1.8 to 5 GHz. Able to cover all major mMIMO bands with separate tunes covering 1.8 to 2.2 GHz, 2.3 to 2.7 GHz, 3.3 to 4.2 GHz, and 4.4 to 4.7 GHz, the GRF5123/4 are specialized, high-gain variants of Guerrilla RF’s pHEMT driver cores, which are already used in 4G and 5G base-station applications. Providing different gain levels for 64T64R or 32T32R 5G mMIMO platforms, they use a common 3- x 3-mm QFN-16 footprint.
The cores support 5- and 3.-V supply rails, leading to a 34% reduction in power consumption, with approximately 2-dB reductions in linearity and compression. In 64T64R systems, reducing the supply rail from 5 to 3.3 V for this single core can save over 10 W of power.
The GRF5123 operates at 2.5 GHz from a 5-V supply at 100 mA of current, with 37.4 dB of gain, 22.9 dBm of OP1dB compression, 38.6 dBm of OIP3 linearity, and a noise figure of 1.2 dB. And the GRF5124 provides 40.2 dB of gain, 23.3 dBm of OP1dB compression, 36.3 dBm of OIP3 linearity, and a noise figure of 1.6 dB. A 3.3-V supply can reduce the gain by 1 dB, and the linearity and compression performance by 2 dB.
Related links:
Guerrilla RF
GRF5123/4