Dual-loop coupler enables microwave power monitoring in confined spaces

21-11-2019 | Link Microtek Ltd | Connectors, Switches & EMECH

The new Link Microtek AM90CD-LP miniature narrowband dual-loop coupler allows designers to include forward and reverse power monitoring in defence or commercial microwave systems that are controlled by tight space constraints.


With flange dimensions of 41.5mm x 41.5mm and a waveguide length of only 33.6mm, the device is an excellent alternative to far larger conventional broadband couplers. It offers rugged construction and is especially ideal for airborne applications as it is fabricated from lightweight aluminium and can be pressurised up to 30psig if needed.


The new coupler can be specified with any standard size of waveguide, enabling it to be utilised for an extensive range of system operating frequencies. As a dual-loop device, it monitors both forward and reverse power at the same time, employing the two SMA ports on each side, one of which is fitted with a termination.


Capable of handling 15kW peak power and 400W average power, the device provides a nominal coupling factor of 40dB. The device is finished with chromium-free passivation, for enhanced corrosion resistance, and satin black epoxy paint.

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