The QJX Crossguide Couplers from QuinStar are 3-port directional couplers that operate from 18 to 60 GHz in four waveguide bands. They are available in 20 and 30 dB coupling options. These couplers are ideal for sampling or inserting RF energy in a waveguide transmission line without affecting the transmitting signal. They have an insertion loss of less than 0.7 dB and directivity of 15 dB. The QJX couplers are suitable for frequency monitoring, power sampling, and built-in testing applications.
