Model WMC-0.5-2-10dB-S from Werbel Microwave is a directional coupler that covers 500 MHz to 2 GHz with broadband flat coupling response, high directivity, and excellent return loss performance.  Stripline design handles much higher power than equivalent core-and-wire models, while the enclosure remains minimally sized at 3.600 x 0.600 x 0.38 inches with SMA-Female connectors.  The device is RoHS compliant, and Sn/Pb solder is available on special order.  The device has coverage of the upper band of UHF as well as L-band.  The mainline and coupled arm VSWR is 1.15:1 typical, minimizing reflections and leading to highly accurate measurements.  Designed, assembled, and tested in the USA.