Miniature dual-loop coupler is made for confined spaces

Forward and reverse power monitoring can be incorporated in military or commercial microwave systems that are subject to tight space constraints, using the AM90CD-LP miniature narrowband dual-loop coupler, says Link Microtek.

The microwave component manufacturer provides the coupler with flange dimensions of 41.5 x 41.5mm and a waveguide length of just 33.6mm, as an alternative to much larger conventional broadband couplers. The AM90CD-LP’s housing construction is rugged, says the company, and the device is finished with chromium-free passivation, for enhanced corrosion resistance, and satin black epoxy paint. It is fabricated from lightweight aluminium, making it particularly suitable for airborne applications, and can be pressurised up to 30psig if required.

The coupler can be specified with any standard size of waveguide, allowing it to be used for a wide range of system operating frequencies. As a dual-loop device, it monitors both forward and reverse power at the same time, using 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 AM90CD-LP delivers a nominal coupling factor of 40dB.

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