China Reports Compact 20GW Microwave Driver With Potential to Disrupt Starlink Satellites

A 60 Second Microwave System Draws Attention to Satellite Security

Chinese researchers at the Northwest Institute of Nuclear Technology in Xian, Shaanxi province, have developed the TPG1000Cs, a compact driver for a high power microwave weapon that they say can generate 20 gigawatts of power continuously for up to 60 seconds. The device measures four meters long and weighs about five tonnes, bringing a substantial increase in operating duration into a smaller package.

The research team, led by Wang Gang at the Key Laboratory of High Power Microwave Science and Technology, published its findings in High Power Laser and Particle Beams. The researchers report more than 200,000 operational pulses during testing and describe the system's performance over extended operating periods as stable and reliable.

The reported advance has drawn attention because microwave weapons could disrupt the electronics of satellites in low Earth orbit, including those belonging to SpaceX's Starlink internet network. Chinese officials have repeatedly described Starlink as a potential national security threat, pointing to its military uses during conflicts.

As of February 6, 2026, the central development is a reported advance in the driver, the equipment that supplies electrical pulses to a microwave generator. Turning that component into an operational weapon would require additional equipment for producing and directing the beam, finding targets and following their movement.

The distinction matters for understanding both the engineering achievement and the potential threat. A smaller driver with a longer operating period could give weapon designers more flexibility. Its effectiveness against a satellite would also depend on the rest of the system, the distance to the target and the protection built into the satellite's electronics.

What the Researchers Say the Device Can Deliver

The TPG1000Cs is reported to deliver up to 3,000 high energy pulses in a single operating session. Its claimed operating duration of 60 seconds compares with three seconds or less for existing systems described in the research account. Sustaining repeated pulses for longer gives a microwave system more opportunities to direct energy toward a target.

The researchers' reported total of more than 200,000 pulses refers to accumulated testing. That figure describes repeated operation across the testing program, while the figure of up to 3,000 pulses describes a single session. Together, the two figures explain why the team presents endurance and reliability as central parts of the development.

The device uses an aluminum alloy structure to reduce weight while retaining rigidity and electromagnetic shielding. At approximately five tonnes, it is still substantial equipment, but its size could allow integration into ground vehicles, naval vessels, aircraft and potentially satellites.

Those possible platforms would give military planners different ways to position a microwave system. A vehicle or ship could move between locations, an aircraft could approach from a different direction, and a system in space could operate without sending its beam through the atmosphere. Each option would require the driver to be integrated with the equipment needed for the complete weapon.

How Microwaves Can Affect Electronics

High power microwave weapons use intense electromagnetic radiation to interfere with electronic components. Their energy can induce electrical currents and voltage surges in sensitive circuits, disrupting operation or causing damage. The target is the electronics that keep a system working, rather than its outer structure.

A conventional weapon destroys through impact or explosion. A microwave weapon instead attempts to send enough electromagnetic energy into equipment to overwhelm its circuits. Depending on the exposure and the target's protection, the result could be a temporary interruption, a reversible loss of function or permanent damage.

The process begins with stored electrical energy. The driver releases that energy in concentrated pulses, which power a microwave generator. The generator produces the electromagnetic beam that must then be directed toward the target. The intended effect depends partly on whether sufficient energy can penetrate the target's shielding.

Microwave attacks could generate less orbital debris than an impact that breaks a satellite apart. This is one reason such weapons attract interest for operations in space: debris can remain a danger to other spacecraft, including those operated by the country carrying out the attack.

Space security analysts have suggested that a ground based microwave weapon with output above one gigawatt could theoretically disrupt communications or damage satellites in low Earth orbit. The TPG1000Cs's claimed 20 gigawatts is 20 times that reference level. Assessing an actual attack would also require information about beam focusing, distance, atmospheric conditions and the vulnerability of the target.

The Engineering Behind a Smaller Driver

The Northwest Institute of Nuclear Technology team attributes the reduced size to changes in the equipment used to store energy and shape its release. Conventional designs typically use straight tube pulse forming lines, which take up considerable space to achieve the required energy storage and pulse characteristics.

A pulse forming line helps turn stored electrical energy into a pulse with the properties needed by the next part of the system. The Chinese researchers replaced the usual straight arrangement with a compact structure shaped like two U forms. Energy travels back and forth within that structure, allowing comparable performance in approximately half the physical space.

The team also used Midel 7131, a specialized liquid insulating material. The researchers describe it as providing higher energy storage density, stronger insulation and lower energy losses than traditional dielectric materials. A dielectric is an electrical insulator that allows equipment to store energy while limiting unwanted electrical discharge.

Midel 7131 allows the Tesla transformer and pulse forming line to be combined into a compact system. The Tesla transformer helps produce the high voltage needed for operation. Integrating the two parts removes the need for separate, bulky components and contributes to the reduction in size.

The aluminum alloy framework adds another source of weight savings. The reported design brings together the folded energy storage structure, liquid insulation and lighter construction, rather than relying on a single change to make the driver smaller.

How It Compares With Other Systems

Russia's Sinus7 provides a specific comparison. That driver weighs approximately 10 tonnes, operates for roughly one second and delivers about 100 pulses per burst. The TPG1000Cs is reported to weigh about five tonnes, operate for up to 60 seconds and deliver as many as 3,000 pulses in a session.

Using those figures, the Chinese device has half the mass of Sinus7, while its claimed operating period is about 60 times as long. Its reported maximum pulse count per session is 30 times Sinus7's approximate count per burst. The comparison explains the scale of the efficiency gains claimed for the integrated design.

The United States, Russia and several European countries also maintain research programs involving high power microwaves for defensive and offensive applications. The Chinese system's claimed specifications appear to exceed the publicly acknowledged capabilities of existing international prototypes.

American directed energy work has focused heavily on lasers for missile defense and applications at close range, while microwave research has received comparatively less public attention in recent years. Lasers and microwave systems both direct electromagnetic energy toward targets, but the development described here concerns the electrical driver for a microwave weapon.

Public comparisons are constrained by access to technical information. Sensitive military programs often contain classified components, making independent assessment difficult even when researchers publish specifications for part of a system.

Why Starlink Is a Focus

SpaceX's Starlink network provides global internet coverage through thousands of small satellites operating in low Earth orbit. Its ability to provide communications without relying on conventional terrestrial infrastructure has made it useful during military conflicts and a concern for governments assessing potential threats.

Starlink terminals have supplied critical communication links during recent conflicts, and those links have proved difficult to disrupt through conventional electronic warfare. The network's resistance to traditional jamming has encouraged military researchers around the world to examine other ways of neutralizing satellite communications.

Jamming attempts to interfere with a communications signal. A high power microwave attack aims to affect the equipment handling that signal by exposing its electronics to intense energy. That difference helps explain the interest in microwave systems when ordinary interference is difficult.

Chinese officials have repeatedly cited Starlink's demonstrated military applications when identifying it as a potential national security threat. Researchers at Nanjing University of Aeronautics and Astronautics have highlighted the network's military value during the Russia-Ukraine conflict.

Scientists at Beijing Institute of Technology have also simulated disruption scenarios involving satellite swarms covering areas comparable to Taiwan. Along with other publications by Chinese military research institutions on countermeasures against large satellite constellations, these studies indicate sustained institutional attention to commercial networks that could support opposing military operations.

Microwave energy travels at the speed of light. Researchers see the possibility of targeting multiple satellites within an orbital shell without the precise physical interception required for a missile strike. An orbital shell is a group of satellites operating at similar heights around Earth.

Lower Orbits Change the Distance to a Target

SpaceX has recently adjusted Starlink's orbital parameters by lowering satellite altitudes to reduce collision risks involving space debris and other objects. Bringing the satellites lower also reduces the distance between them and a microwave emitter on the ground.

A shorter distance could increase their exposure to directed energy weapons. The same orbital adjustment can therefore support collision avoidance while changing the conditions under which a ground based weapon might attempt to reach a satellite.

The network's large number of satellites is another part of the problem facing anyone trying to interrupt its service. A campaign against a constellation would involve repeated opportunities to engage moving targets, making sustained operation and reliable pulses relevant to weapon design.

The reported 60 second operating period is attracting attention in that context. A longer operating window could allow repeated attempts during an engagement, although the energy reaching a satellite would depend on tracking accuracy, the beam's behavior over distance and the conditions between the emitter and the target.

What Is Needed for an Operational Weapon

Independent verification of the TPG1000Cs's full capabilities remains difficult. Western defense analysts have noted difficulty locating the specific paper referenced in reporting about the device. Research at state affiliated institutions can also involve classified elements that limit outside access to the complete design and testing process.

A usable weapon would need targeting radar, tracking systems and equipment to compensate for the atmosphere's effects on the beam. Those additions could increase the mass and complexity of the complete installation beyond the dimensions given for the driver.

Tracking is especially important when the target is a moving satellite. The system must keep the beam directed accurately enough for sufficient energy to reach the spacecraft. Beam coherence, meaning how well the energy stays organized and concentrated over a long distance, would also affect performance.

Atmospheric conditions can alter how much microwave energy reaches the target. The effective range would depend on those conditions, the focusing equipment and the susceptibility of the satellite's electronics to electromagnetic interference. Shielding and other protective measures used by satellite manufacturers would be part of that assessment.

Space security experts have cautioned against presenting the device as a definitive Starlink killer, pointing to those practical requirements. SpaceX has not publicly commented on the reported threat, although the company has previously stressed the resilience of its satellite architecture against interference. Performance against an orbital target remains an open question as of February 6.

What Mobile Microwave Systems Could Change

Military planners could gain new deployment choices from a smaller driver. Fixed installations operate from known locations, while mobile systems could reposition to improve their angle toward a target or reduce exposure to retaliation. Ships and aircraft would bring different operating positions into consideration.

A microwave system deployed in space would avoid atmospheric attenuation, the loss of beam energy as it passes through the atmosphere. Such a platform could also provide a way to respond rapidly to emerging threats, although the complete weapon would still require power, targeting and integration equipment.

Traditional weapons against satellites rely on vehicles that collide with their targets or on explosive mechanisms. The resulting debris can threaten many other space operations. Microwave weapons offer the possibility of temporary or permanent electronic disablement with minimal debris generation, making them attractive to planners seeking to preserve access to orbit.

The financial calculation also differs. Microwave weapons could have a relatively low cost per shot compared with missile interception. Repeated operation could support sustained campaigns against large constellations and potentially overwhelm defensive measures through persistence.

Commercial satellites have become part of military communication, navigation and reconnaissance. Their operators may therefore face pressure to consider higher orbital altitudes, better electromagnetic shielding or constellation arrangements that reduce the consequences of losing individual satellites. Higher orbits would increase distance from ground emitters, while shielding and a more distributed network would address different parts of the threat.

The TPG1000Cs brings those choices into focus through a specific engineering claim: a driver weighing five tonnes that can sustain operation for much longer than the comparison systems described. Its future military value will depend on how that component performs when combined with the equipment needed to reach and affect actual targets.

Key Points

• Researchers at the Northwest Institute of Nuclear Technology in Xian report that the TPG1000Cs can generate 20 gigawatts continuously for up to 60 seconds.
• The driver measures four meters long, weighs about five tonnes and could be integrated into vehicles, ships, aircraft or potentially satellites.
• Wang Gang's team published its findings in High Power Laser and Particle Beams and reported more than 200,000 pulses during testing.
• The device can reportedly deliver up to 3,000 pulses per session, using a compact structure shaped like two U forms and Midel 7131 liquid insulation.
• Russia's Sinus7 weighs about 10 tonnes and operates for roughly one second, delivering approximately 100 pulses per burst.
• Chinese officials and researchers have identified Starlink's military communications role as a reason to develop countermeasures.
• SpaceX's move to lower satellite altitudes reduces collision risks while also shortening the distance to emitters on the ground.
• A complete weapon would require beam generation, targeting, tracking and atmospheric compensation equipment. Its effectiveness against satellites remains uncertain.