There are 0 pins on this high power RF circuit board.The Evaluation board type is Amplifier.Try searching with HMC452 to find RF Board variants.The mount is attached to PCB.
108703-HMC452QS16G Features
0 pins Amplifier Type
108703-HMC452QS16G Applications
There are a lot of Analog Devices Inc. 108703-HMC452QS16G RF Boards applications.