Dow-Key Microwave, a subsidiary of Dover Corp., introduced the "Iso-Switch" (249D90900). The switch addresses insertion loss, weight, and size limitation issues. This integrated assembly of an electromechanical RF switch and isolator performs a redundancy function in an LNA RF circuit. By combining the switch and isolator into one unit, RF parameters are improved over individual devices as well as saving weight and space.
The switch component has a frequency range of DC to 26 GHz. VSWR (max.) input is 1.20:1, while VSWR (max. output is 1.25:1. Maximum insertion loss is 0.3 dB. Minimum isolation is 70 dB. The switch measures 58 cm3 and weighs 114 grams. The bandwidth is limited by the isolator and can be optimized for other frequency ranges.