Quantic PMI Model: PMC-16G17G-SMA is a monopulse comparator operating over the 16 to 17 GHz frequency range. This model offers a maximum 2.6 dB insertion loss while maintaining a maximum amplitude balance of ±0.8 dB, a maximum phase balance of ±10° and a maximum VSWR of 1.60:1. Has SMA female connectors, and the housing size is 3.125" x 3.125" x 0.440".  https://www.pmi-rf.com/product-details/pmc-16g17g-sma