anti-drone microwave

Anti-drone microwave weapons: the high-power microwave C-UAS guide

An anti-drone microwave weapon is a directed-energy counter-UAS system that attacks a drone's electronics with electromagnetic energy instead of bullets, lasers, or radio jamming.

By Jonathan Teplitsky · reviewed against Department of War, FAA, DHS, and company primary sources · updated August 22, 2026.

What an anti-drone microwave weapon actually does

An anti-drone microwave weapon disables the drone rather than destroying it, by pushing energy into the aircraft's circuits until they stop working.

The energy couples in through antennas, wiring, and gaps in the airframe. Flight controllers, receivers, and power electronics are the vulnerable parts. The drone usually falls or loses control rather than breaking apart in the air.

That distinction matters for buyers. A kinetic hit produces debris and a clear kill; a microwave engagement produces a soft failure that is harder to confirm from the ground. Assessment and re-engagement are part of the system, not an afterthought.

The wide beam is the entire design argument

High-power microwave earns its place in counter-UAS because it spreads energy across a cone instead of a single aim point.

One engagement can therefore affect several aircraft at once. Epirus markets its Leonidas family explicitly on that counter-swarm logic, and the swarm problem is the reason the category is funded at all. A defended site facing twenty cheap drones cannot answer each one with a missile.

The same property is the weakness. A cone that reaches many drones also reaches whatever friendly electronics sit inside it. Beam shaping, sidelobe control, and safe firing arcs are where the real engineering argument lives, and they are the questions to ask about any HPM claim.

How HPM compares with the other counter-UAS effectors

Each counter-UAS effector fails in a different way, so the comparison is about matching the effector to the threat and the site.

Criterion	High-power microwave	High-energy laser	RF jammer	Kinetic / interceptor
Targets	Electronics, several at once	Airframe, one at a time	Control and navigation links	The aircraft itself
Best against	Swarms and close-in mass attacks	Single higher-value targets	Link-dependent commercial drones	Anything, if the cost trade works
Main limit	Discrimination and friendly-electronics risk	Weather, dwell time, and beam quality	Useless against autonomous or fiber-controlled drones	Cost per shot and finite magazine
Magazine	Limited by prime power and duty cycle	Limited by prime power and cooling	Effectively continuous	Consumed on every engagement
Verdict	Choose for close-in swarm defense on a powered platform	Choose for precise engagements in clear conditions	Choose as a cheap first layer, never as the only one	Choose when a confirmed kill is required

This table is an editorial framework for qualitative research only.

Jamming deserves a specific note, because the threat has moved. Fiber-optic-controlled and fully autonomous drones do not depend on a radio link, so a drone jammer has nothing to break. That gap is a large part of why non-kinetic effectors that attack the airframe or its electronics directly, HPM and anti-drone lasers alike, keep drawing money.

What has actually been funded, and by whom

The public HPM program record in 2026 is small, recent, and almost entirely prototype work.

Epirus holds the longer record. The company delivered an ExDECS high-power microwave prototype to Naval Surface Warfare Center Dahlgren for the Marine Corps, a derivative of its Leonidas Expeditionary system, and received a $43.5 million Army contract for IFPC-HPM Generation II systems. The full funding and contract history sits on the Epirus company page.

ThinKom is the newer entrant and the reason this category moved in August 2026. The company announced Alecto on April 30, 2026 as a self-funded, vehicle-mounted HPM effector built on its VICTS phased-array antenna technology and vacuum electronics, claiming fire-on-the-move capability against drone swarms.

The Army then awarded ThinKom an Other Transaction Agreement with a $49 million ceiling on August 19, 2026, through the Program Manager for Advanced Counter-UAS Effects. Initial funding covers the first of four requested prototypes, with field testing planned for 2027. ThinKom's own release states the agreement is not a production commitment or a procurement decision.

Fire-on-the-move is the specific thing these programs are buying

The 2026 awards are not really about microwave physics; they are about moving directed energy off the fixed site and onto a vehicle that keeps up with a formation.

That is a harder problem than a static installation. A parked system can draw on generators, heavy cooling, and a prepared power connection. A vehicle-mounted effector has to fit the power plant, the thermal load, the sensors, and the fire-control chain onto a platform that is already carrying a crew and a mission.

This is the screening detail most retail coverage skips: an HPM headline is worth more when the requirement says "on the move" than when it says "site defense", because the second one is a solved integration problem and the first one is not. Watch for whether a program pairs the effector with government-furnished sensors and fire control, as the ThinKom agreement does, since that pairing is what turns a device into a weapon system.

The limits worth holding onto

Three limits keep high-power microwave from being the answer to the drone problem on its own.

Discrimination. The beam does not know which electronics belong to the threat. Nearby radios, vehicles, and sensors sit in the same physical space.
Power. Prime power and cooling set the real magazine depth. The relevant question is how long a system can keep engaging, not how many shots it holds.
Evidence. Almost everything public is prototype delivery and scheduled testing. A delivered prototype is not a fielded capability, and an OTA is not a production contract.

The authority layer applies here exactly as it does to every other effector. The FAA counter-UAS resources and the interagency legal advisory set out why mitigation is restricted, and the DHS counter-UAS technology guide frames how the capability classes differ. Demand from bases and critical infrastructure does not mean every buyer may operate one.

Investor read-through

High-power microwave is a real budget line and a poor stock ticker, and holding both facts at once is the discipline this page is for.

Strong signal: a named program office, a stated prototype count, scheduled government testing, and integration with government-furnished sensors and fire control.
Weak signal: a demonstration video, a trade-show display, or a peak-power claim with no buyer, no test schedule, and no power-integration detail.
Key question: is the company selling the effector, the sensor layer, the command workflow, or the whole counter-UAS package? Only the last one carries system-level revenue.
Structural catch: the two clearest HPM builders are private, so public-market exposure runs through diversified primes and the broader C-UAS names instead.

Read this page next to counter-UAS, anti-drone systems, drone swarm technology for the threat side, and defense drone stocks for the investable bridge.

Anti-drone microwave FAQs

What is a high-power microwave weapon?

A high-power microwave (HPM) weapon is a directed-energy system that projects a burst of electromagnetic energy to disrupt or damage the electronics inside a target. In counter-drone use, it is aimed at the drone's circuits and flight controller rather than at its airframe, so the aircraft falls out of the sky without being physically destroyed.

How do high-power microwave weapons work against drones?

A high-power microwave weapon works by coupling electromagnetic energy into a drone's electronics through its antennas, wiring, and seams until the circuits stop working correctly. The effect is spread over a cone rather than a single aim point, which is why Epirus and other vendors market HPM as a counter-swarm tool. That wide beam is the whole design argument: one engagement can affect several drones at once, where a laser has to hold a spot on one target at a time.

What is the range of an anti-drone microwave weapon?

There is no verified public range figure for any fielded anti-drone microwave weapon, and effective range is treated as sensitive program data. Range depends on radiated power, antenna gain, how well the target's electronics are shielded, and how much disruption counts as a defeat. Treat any specific number you see online as unverified unless it appears in an official program release such as the Department of War directed-energy counter-drone program page.

What are the weaknesses of a high-power microwave weapon?

The main weaknesses are discrimination, power, and proof. A wide beam that reaches several drones can also reach friendly electronics in the same cone, so fratricide and collateral interference are live engineering problems. HPM also needs substantial prime power and cooling on the platform, and most public evidence is still prototype testing rather than sustained operational use.

How is a microwave counter-drone system different from a laser?

A microwave system spreads energy across a cone to attack electronics, while a laser concentrates energy on a small spot to damage a specific part of the airframe. That makes HPM better suited to swarms and short-range self-defense, and lasers better suited to precise single-target engagements at longer range. Lasers also lose more performance in fog, dust, and rain, while microwave systems trade that resilience for weaker discrimination.

Which companies build anti-drone microwave systems?

Two names carry most of the current U.S. program record. Epirus is a private directed-energy company whose Leonidas and HAVOC high-power microwave systems are built to disable drone swarms, and it has both Army and Marine Corps program history. ThinKom Solutions, better known for satellite-communications antennas, self-funded a mobile HPM effector called Alecto and won an Army prototype agreement for it in August 2026 — see the Alecto announcement for the program details. Both are privately held, so neither is directly investable today.

Can a company or private site buy an anti-drone microwave weapon?

No. Mitigation authority in the United States is narrow, and a device that disables aircraft electronics sits squarely inside it. The FAA, DOJ, DHS, and FCC interagency advisory warns that counter-drone mitigation can implicate communications, aviation, aircraft-damage, and computer-access laws. Private buyers should read HPM as a federal and specially authorized capability, not as a security product.

Is there a pure-play stock for high-power microwave counter-drone technology?

No publicly traded company sells high-power microwave counter-drone systems as its primary business today. The two companies with the clearest HPM program records, Epirus and ThinKom, are both private. Investors looking at the theme are really buying diversified counter-UAS exposure, so start with the counter-drone company map and check segment disclosure on SEC EDGAR before treating any directed-energy award as material revenue.

Do other countries have high-power microwave counter-drone weapons?

Several countries have publicly shown or claimed high-power microwave counter-drone systems, including China and India, and those claims regularly circulate as finished capabilities. Treat foreign HPM announcements the same way as domestic ones: look for a named program office, a funded contract, and independent test reporting before accepting the claim. A displayed system at a defense exhibition is a marketing artifact, not evidence of fielded capability.