NEWS

A recent joint demonstration by VDI, Keysight, and Micro Harmonics successfully transmitted two independent wideband signals over a single 142 GHz link using orthogonal polarizations, effectively doubling data capacity. The breakthrough was enabled by Micro Harmonics’ high‑isolation, low‑loss OMT, which allowed 40 GHz of combined bandwidth to pass through one spatial path with exceptional signal integrity. This milestone paves the way for even higher‑capacity sub‑THz links, including [...]

An article published in EE Design It discusses a growing reality in mmWave system design: traditional attenuation approaches stop scaling once you push into the D-band. The story features our new WR-8 voltage-variable attenuator as the solution. That is because we addressed the problem, not with a refinement of conventional techniques, but by switching to a fundamentally different mechanism: Faraday rotation. Read the full story [...]

We are excited to announce the release of our newest millimeter-wave voltage-variable attenuator (VVA) that harnesses Faraday rotation technology. The WR-8 VVA is optimized for systems operating in the 90-140 GHz frequency range, delivering full band performance. Read the full release in Microwave Journal:

Keysight Technologies published a white paper on: 6G - A New Approach to Increasing Data Throughput. The company, in collaboration with Virginia Diodes, utilized our Orthomode Transducers (OMTs) in a new approach to combine the vertical and horizontal polarized signals into one dual-polarized signal to double the data throughput relative to a single-polarized transmission. This exploits orthogonal horizontal and vertical polarizations to transmit two independent [...]

An article in Microwave Product Digest discusses one of the central engineering challenges in sub-THz communication is the limited availability of hardware and the underlying components required for it to operate reliably at these frequencies. The story is about a recent effort led by Virginia Diodes, Inc. (VDI) and Keysight Technologies, using the Micro Harmonics OMT. The goal was to deliver clean, high-power, wideband signals [...]

Micro Harmonics Corporation has announced the release of its new mmWave orthomode transducer (OMT), engineered for high frequency applications requiring low loss, excellent polarization purity and wideband operation. The WR-3.4 orthomode transducer is optimized for systems operating in the 220 to 330 GHz frequency range, delivering performance that meets or exceeds stringent requirements for satellite communications, 5G/6G testbeds, radiometers and scientific instrumentation. Read the full [...]

Polarization multiplexing is a proven approach for doubling data capacity in communication and sensing systems at lower frequencies. The challenge comes when trying to apply the same concept at sub-THz frequencies, especially with ultra-wideband signals, where maintaining signal integrity becomes far more complex. A recent article in EE Design It highlights how our OMT helped overcome this challenge. By combining high polarization isolation with low [...]

Doubling data at sub-THz: one link, two polarizations, twice the data. As part of the pursuit of sub-terahertz (THz) systems, engineers from Keysight and VDI used a MMW OMT from Micro Harmonics to successfully transmit two independent, wideband signals, each on an orthogonal polarization, through a single spatial link at 142 GHz. By combining both signals into one beam using a high-isolation, low-loss orthomode transducer [...]

A 60-year-old theory is changing the game for millimeter-wave attenuators (MMW). An article published in New Electronics explains how engineers have long relied on PIN diodes and resistive vane attenuators to manage signal strength. Yet, both come with serious tradeoffs at high frequencies. Now, a breakthrough in Faraday rotation is unlocking a third path forward, offering a solution that’s faster, more compact, and better suited [...]

Electronic Specifier had a lot to say about our MMW isolators in an article discussing the future of sub-THz amplifiers. In essence: “By adopting new isolator designs, engineers can significantly reduce insertion loss, improve thermal management, and optimize system performance. Advanced isolators not only ensure that millimeter-wave amplifiers maintain peak efficiency but also enhance reliability and longevity over extended operational periods.” Read the full article here: