Advanced Isolators Aim for Millimeter-Wave Frequencies

Advanced Isolators Aim for Millimeter-Wave Frequencies

Take note of the isolator and circulator developments coming from Micro Harmonics—its products now cover frequencies greater than 300 GHz.

Founded in 2008, Micro Harmonics specializes in ferrite components that perform at millimeter-wave frequencies and beyond. In 2015, the company was awarded a NASA Phase I SBIR to develop a line of Faraday rotation isolators and circulators. NASA extended the program to a Phase II grant that ends in April 2018.

The company’s new millimeter-wave isolator products are intended for applications that require superior isolation and low insertion loss (see figure). The initial standard product offerings are available as WR-12 (60 to 90 GHz) and WR-10 (75 to 110 GHz) components. The WR-12 isolators achieve less than 1 dB of insertion loss in the popular 71- to 76-GHz and 81- to 86-GHz bands. The implementation of diamond substrates to channel heat to the waveguide block dramatically enhances power-handling capability.

The latest isolator developed by Micro Harmonics can handle 1 W of input power.

These isolator products are expected to enable scientific instrumentation applications that range from plasma diagnostics and chemical spectroscopy to biomaterial analysis and radio astronomy.

For more information, visit the company’s website.

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