The 20094-SF40 from Flann Microwave is a waveguide to coax adapter that operates from 17.6 to 26.7 GHz. It has a WG-20/R-220/WR-42 to SMA Interface and is available in a right angle configuration. The 20094-SF40 has a VSWR of 1.20:1 and measures 21.5 x 27.9 x 15.1 mm.