The microwave industry lacks a suitable coaxial switch for frequencies above 30 GHz. Commercially available coaxial switches fall short in performance: they prove to be very lossy at high frequencies and cannot handle high power. Addressing this shortcoming, Sector Microwave Industries developed a new innovative technique that achieves the benefits of both coaxial and waveguide switches in a hybrid, “Cowave” switch. The Cowave switch is capable of handling high power and can be tuned by design to a wide band of waveguide frequencies up to 50 GHz.
The innovative aspect of this new switch is that it is contactless. The unit uses a miniature waveguide rotor and waveguide channels, enabling the transfer of energy inside the Cowave housing. The switch is compact and miniature compared to using coaxial-to-waveguide adapters with a typical waveguide switch. The Cowave switch is also modular and can be configured to have different combinations of coaxial connectors and waveguide ports on both inputs and outputs to form DPDT, SPDT and more options.
Within the waveguide bandwidth, the switches typically measure 0.5 dB insertion loss, 1.25:1 VSWR and 45 dB isolation.
Sector Microwave Industries
Deer Park, N.Y.