0 pins are present on the high power RF circuit board.An Evaluation board with the Downconverter RF type.Look for RF Board variants by searching with HMC977.By PCB, RF Board has been mounted.
131656-HMC977LP4E Features
0 pins Downconverter Type
131656-HMC977LP4E Applications
There are a lot of Analog Devices Inc. 131656-HMC977LP4E RF Boards applications.