GaN amplification up to 350W for C-Band radar

Author: EIS Release Date: Feb 15, 2023

For phased-array C-Band radar, CMPA5259050S and CMPA5259080S from Wolfspeed are respectively 50W and 80W 5.0-5.9GHz GaN MMIC power amplifiers.

 

Richardson Wolfspeed_C-band_Radar

The “two-stage reactively-matched amplifier approach enables high power and power added efficiency to be achieved in a 5 x 5mm QFN surface -mount package” (black in photo), according to Richardson RFPD, which is stocking the parts, and offering design support.

 

CMPA5259080S (80W)

>48% typical power added efficiency

29dB small signal gain

110W typical PSAT

40V supply max

CMPA5259050S (50W)

>50% typical power added efficiency

27dB small signal gain

65W typical PSAT

28Vmax supply

Richardson sees then in civil and military pulsed radar, and also in traditional radar driving the also new 350W 5.2 – 5.9GHz CGHV59350F, which is a GaN on SiC hemt in a 24 x 17.5mm (plus leads) ceramic-metal flanged package (photo), or a lugless version which reduces 24mm to 18mm.

 

This has 50Ω matching on the input and output, and 10.7dB power gain, 60% typical PAE and under 0.3dB pulsed amplitude droop, said the distributor.