In this video, I tested some key parameters of a WMC-2-18-10dB-S 2 to 18 GHz directional coupler from Werbel Microwave and also demonstrated its use as a power combiner.

Werbel Microwave: https://werbelmicrowave.com/
WMC-2-18-10dB-S 2: https://werbelmicrowave.com/wmc-2-18-...

   • Experiments with a 0.5 to 20 GHz Dire...  
   • Testing/Teardown of a 4-way 500 MHz t...  

00:00 Overview
01:13 Characteristics of a directional coupler
02:06 Specifications of the WMC-2-18-10dB-S
03:04 Testing using a VNA
06:00 Testing at 12 GHz
08:22 Using directional coupler as power combiner, conclusions