Model 106040010, a new directional coupler operating in the frequency range of 6.0 to 40.05 GHz, offers nominal coupling of 10 dB in a compact package. It is uniquely designed for systems applications where external leveling, precise monitoring, signal mixing, or swept transmission and reflection measurements are required. The coupler provides simple solutions for many applications covering microwave frequency bands from L- through K-band, including electronic warfare (EW), commercial wireless, SATCOM, radar, signal monitoring and measurement, antenna beam forming, and EMC testing environments. Its compact size makes it ideal for many space-restricted applications. Frequency sensitivity is +/-0.6 dB, insertion loss (including coupled power) is less than 1.8 dB, directivity is greater than 12 dB. Maximum VSWR (any port) is 1.6, input power rating is 20W average and 3kW peak. Operating temperature is -54 to +85ºC. The directional coupler is in a compact package measuring just 1.40 x 0.45 x 0.69” and weighing only 1.2 ounces.