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Micro Harmonics

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About Us


Micro Harmonics is a small business located in Fincastle, Virginia, that produces technology for some of the most innovative and emerging companies in the technology, research, and space sectors.


Circulators & Isolators

We produce millimeter-wave and sub-millimeter-wave wave ferrite circulators and isolators for systems operating from 50-325 GHz. These are the most advanced products on the market, and have designs optimized for extended bandwidth and low insertion loss. We can customize our designs to meet any specific application.

History, & Into the Future

Founded in 2008 as a specialized research and design consultancy for microwave, millimeter-wave, and sub-millimeter-wave components, we remain dedicated to quality components and custom solutions. In 2015 we were awarded a NASA Phase I SBIR contract and subsequently Phase II SBIR contract to develop an advanced line of Faraday rotation isolators and circulators in bands from WR-15 through WR-3.4 (50 GHz to 330 GHz).

Using sophisticated impedance matching and mode control techniques we have demonstrated a WR-15 circulator with more than 6 GHz bandwidth from 58-64 GHz, which is three times the bandwidth of any other commercial product. In WR-12 we developed and demonstrated circulators covering the bands 71-76 GHz and 81-86 GHz. In WR-10 our circulator covers a 5 GHz bandwidth from 90-95 GHz and in WR-8 we have demonstrated 5 GHz bandwidth from 115-120 GHz. Our goal is to extend the isolator line to WR-2.8 (265-400 GHz) and possibly to WR-2.2 (330-500 GHz). We continue to develop circulators in sub-bands from 50-200 GHz. All of our products exhibit state-of-the-art performance in terms of low-insertion loss, low port reflections, high isolation, and broad-bandwidth.