Micro Harmonics

Micro Harmonics Contact information, map and directions, contact form, opening hours, services, ratings, photos, videos and announcements from Micro Harmonics, Science, Technology & Engineering, 20 S Roanoke Street, Suite 202, Fincastle, VA.

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.

IMS 2026 is underway, and we’re here in Boston. Come by Booth #23024, where we are running two live demos:A WR-8 voltag...
06/09/2026

IMS 2026 is underway, and we’re here in Boston. Come by Booth #23024, where we are running two live demos:

A WR-8 voltage-variable attenuator in operation as a power equalizer. It is compact, has no moving parts, and is designed for real system integration.

A photonic THz source stabilization setup with IMRA America, using a WR-3.4 full-band circulator and OCS spectroscopy to lock frequency.

If you’re working on mmWave or sub-THz systems and need better control over stability or signal levels, come take a look. You’ll be able to talk directly with the engineers behind the hardware.

Just one more week until IMS 2026 in Boston. If you’re working in millimeter-wave or sub-THz systems, we’ll have two dem...
06/02/2026

Just one more week until IMS 2026 in Boston. If you’re working in millimeter-wave or sub-THz systems, we’ll have two demos at the booth that are worth a look.

The first, with IMRA America, focuses on stabilizing photonic THz sources using a WR-3.4 full-band circulator and OCS spectroscopy to lock frequency.

The second is applicable across a range of systems: a new line of voltage-variable attenuators in WR-8. These are compact, have no moving parts, and can be used for power equalization, calibration, or switching. We’ll be running one live as a power equalizer.

If you’re dealing with signal control, stability, or calibration challenges, stop by. Our engineering team will be there to walk through the setups and talk through specific use cases.

You can find us at Booth #23024. We’ll see you there.

Today, we want to honor and remember the men and women who gave their lives in service to our country. Their sacrifice m...
05/27/2026

Today, we want to honor and remember the men and women who gave their lives in service to our country. Their sacrifice made so much of what we have today possible, and we’re deeply grateful to those who made the ultimate sacrifice.

IMS 2026 is coming up, and we’ll be in Boston this June 8th-12th. Come by Booth #23024. We have a couple of unique demo...
05/20/2026

IMS 2026 is coming up, and we’ll be in Boston this June 8th-12th. Come by Booth #23024. We have a couple of unique demos planned.

For example, at higher frequencies, engineers often face a tradeoff: photonic THz sources can deliver lower noise than electronically multiplied sources, but frequency drift becomes a real challenge. At IMS, we’ll be showing how that problem can be addressed in practice.

In collaboration with IMRA America, we’re incorporating a WR-3.4 full-band circulator into a system that uses OCS spectroscopy to establish a stable reference and lock the signal.

It’s a good example of how component-level performance starts to directly shape what’s possible at the system level, especially as designs push further into the THz range.

More details to come.

Last week, we described a short-circuit test for orthomode transducers that provides useful insertion loss data, along w...
05/12/2026

Last week, we described a short-circuit test for orthomode transducers that provides useful insertion loss data, along with qualitative insight into isolation and cross-polarization coupling. What it does not provide is direct information about the OMT’s intrinsic port reflections, including S11, S22, S33, and S44.

In a short-circuit test, the large reflections measured at ports 1 and 2 are treated as transmission-related data. That makes the method useful, but it can also obscure significant reflections that originate within the OMT itself.

To obtain more accurate reflection data, the short-circuit termination on the common-mode port can be replaced with a matched load.

Testing an OMT with a matched load gives a more complete view of device performance, particularly when reflection behavior must be characterized with confidence.

While the short-circuit method remains useful for fast, practical evaluation, the matched-load approach reduces ambiguity and makes it easier to separate true port reflection performance from artifacts introduced by the test configuration.

Read our latest blog for a detailed explanation of OMT testing with a matched load on the common-mode port: https://microharmonics.com/orthomode-transducers-part-5/

RF testing of orthomode transducers (OMTs) presents a unique challenge because the common-mode port supports two orthogo...
05/05/2026

RF testing of orthomode transducers (OMTs) presents a unique challenge because the common-mode port supports two orthogonal modes, while vector network analyzers use single-mode test ports.

The key issue is how to properly terminate the common-mode port during measurement.

One straightforward approach is to terminate the common-mode waveguide with a short circuit using a flat metal plate. Short-circuit terminations are commonly included in rectangular waveguide calibration kits and can also be used effectively with square waveguides.

With this setup, the OMT insertion loss can be measured directly. As shown in the figure above, Port 1 and Port 2 are single-mode rectangular waveguides that connect to the vector network analyzer, while the short-circuited common-mode port provides the required boundary condition for the measurement.

For a more detailed explanation of OMT testing with a short-circuit termination on the common-mode port, read our blog: https://lnkd.in/g7HaGpPV

For decades, the terahertz (THz) region of the electromagnetic spectrum, roughly 300 GHz to 3 THz, has held enormous pro...
04/29/2026

For decades, the terahertz (THz) region of the electromagnetic spectrum, roughly 300 GHz to 3 THz, has held enormous promise for faster wireless communications, ultra-high-resolution spectroscopy, and more precise sensing. Even so, practical THz systems have remained difficult to realize.

One of the biggest hurdles is creating THz sources able to deliver both the output power and spectral purity needed for real-world use.

Researchers at IMRA America may have taken an important step forward.

By combining a resonant tunneling diode (RTD), a photomixed dual-wavelength Brillouin laser, and our low-loss waveguide circulator, the team demonstrated more than 40 dB of gain at 260 GHz.

They also became the first group to characterize the residual phase noise of an injection-locked RTD at this frequency, offering new insight into how high-power, low-noise THz oscillators can be built and extended to higher frequencies.

For more details on how our circulator paved the way for this breakthrough, you can read the full article here: https://microharmonics.com/march-13-2026/

04/21/2026

🚀 Powering Up THz Systems with Injection-Locked Amplifiers

For years, the terahertz (THz) spectrum has held immense promise—from ultra-fast communications to high-resolution sensing and spectroscopy—yet practical implementation has remained a challenge.

Now, a breakthrough approach is beginning to bridge that gap.

By introducing a novel THz source architecture, researchers have demonstrated over 40 dB gain at 260 GHz, while also offering valuable insight into phase noise performance—two critical factors in enabling real-world THz systems.

More importantly, this advancement highlights a clear and scalable path toward achieving both high output power and spectral purity, bringing us one step closer to unlocking the full potential of THz technology.

📡 The future of THz innovation is steadily coming into focus.

📖 Read the full article from everything RF to explore how injection-locked amplifiers are shaping the future of THz systems. Micro Harmonics

Check out - https://ow.ly/juO450YITBM

Why data is king in D-Band communications: At D-band (110–170 GHz), every decibel matters. With data rates climbing towa...
04/21/2026

Why data is king in D-Band communications: At D-band (110–170 GHz), every decibel matters. With data rates climbing toward 110 Gbps and beyond, even small inefficiencies in system design can limit performance.

Our full-band hybrid circulators, now operating across the entire D-band, offer:
1) >20 dB isolation for cleaner transmit/receive separation
2) Low insertion loss to preserve precious signal power
3) Compact, lightweight design for integration into modern platforms

Whether you’re designing next-gen backhaul, defense radar, or advanced test equipment, our hybrid circulators deliver the bandwidth and performance your systems demand.

Learn more: https://microharmonics.com/millimeter-wave-circulators/

The issue with creating components at frequencies above 100 GHz comes down to physics. As you move up the electromagneti...
04/14/2026

The issue with creating components at frequencies above 100 GHz comes down to physics.

As you move up the electromagnetic (EM) spectrum, the wavelengths get shorter. In fact, at a frequency of 300 GHz, the wavelength shrinks to just one millimeter.

At these higher frequencies, the constituent parts are tiny and even small alignment errors can significantly degrade performance.

At such a small-scale, available power and device power handling become a big challenge.

Therefore, components at these frequencies must operate with exceptionally low insertion loss and extremely high performance to allow engineers to develop effective signal chains.

We have overcome these limitations and have successfully developed an advanced line of commercial off-the-shelf (COTS) orthomode transducers, isolators, attenuators, and hybrid circulators, many of which can operate well into the THz regime.

Find a list of our global distributors here: https://lnkd.in/g8ezBR8a

Address

20 S Roanoke Street, Suite 202
Fincastle, VA
24090

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

+18334739983

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