How it works
Aethera develops solid-state RF generators for industrial processes and custom power-processing electronics for plasma propulsion. Its industrial APG range is advertised at 10–400 kW with 7 or 14 MHz configurations, 19-inch rack or horizontal installation, and digitally adjusted power through local or remote IP-based controls. The company also describes replacements for conventional dielectric-heating systems at 6.78, 13.56 and 27.12 MHz, with custom frequency work across 1–100 MHz. These are portfolio ranges, not a claim that every power and frequency combination is a standard product.
The industrial equipment converts grid power into controlled RF energy for dielectric heating, drying and curing. Aethera expresses output at the RF interface, an important distinction when comparing it with legacy equipment labelled by DC input power. Installation, commissioning, operator training, remote troubleshooting and software updates accompany the equipment offer. Its company-reported Rosboro installation case describes an APG7-50 installation on a USNR finger-jointing line, including testing, calibration and process-recipe adjustment.
A customer report from NC State dated March 27, 2026 records commissioning of four 50 kW, 2–4 MHz amplifiers for the AMAROK ion-source programme. Individual units reached 50 kW across the specified band. Combined sustained testing at 2 MHz reached 75 kW because of the available dummy-load limit; the report does not demonstrate 200 kW combined operation. These amplifiers support university plasma experiments associated with prospective DIII-D improvements.
The propulsion work has a different electrical and environmental baseline. A co-authored 2020 paper describes a VASIMR ground-test PPU producing 120 kW RF output over 0.4–1 MHz from 270–350 V DC. It reports 52.9 kg including 15 kg of shielding, four-hour vacuum operation into a water-cooled resistive load, and a historical TRL 5 assessment. Twelve amplifier boards, protection and master-control functions, a hardware inhibit, Ethernet/Modbus communication and a fluid cold plate form part of that described design.
A separate 2022 report describes a 55 kg second-stage unit with 120 kW maximum input and 98.3% efficiency at 500 kHz. The configurations and power bases should remain distinct. Ad Astra subsequently linked Aethera’s PPU to an 88-hour, 80 kW engine run in July 2021. This is a ground-development record; low-power units for smaller spacecraft remain a separate development avenue.
Technical detail
Core features
- Industrial APG portfolio advertised at 10–400 kW with 7 or 14 MHz configurations and digital power control
- 19-inch rack or horizontal installation options, with local and remote IP-based control
- Dielectric-heating replacement work at conventional industrial frequencies, plus custom RF engineering
- Installation, commissioning, training, troubleshooting and software-update services
- Four 50 kW, 2–4 MHz amplifiers commissioned at NC State in March 2026; combined sustained demonstration limited to 75 kW by the dummy load
- Custom VASIMR power electronics with configuration-specific DC input, RF output, cooling, protection and control interfaces
- Published ground-test PPU architecture includes twelve amplifier boards, hardware inhibit, Ethernet/Modbus communication and a fluid cold plate
Use & integration
Recorded applications
- Industrial dielectric heating, drying and curing
- Custom plasma-propulsion RF power processing
- RF integration and process-control engineering
These describe the reviewed application scope, not confirmed deployments, released requirements or procurement eligibility.
Evidence of maturity
Industrial equipment has published installation evidence and a March 2026 customer commissioning report. A 2020 propulsion PPU was assessed at TRL 5 in its ground-test configuration; later reports describe additional ground operation. That rating does not cover the industrial portfolio or establish flight qualification.
Commercial availability
Industrial APG equipment and custom RF engineering are offered with installation and support services. A specific power, frequency, load and control configuration must be agreed. Space-propulsion units are programme-specific development hardware; no flight-qualified catalogue availability is established.
Integration and verification
- Readiness
A technology readiness level is not established by the reviewed public sources.
- Reviewed connections
No reviewed Mission area or released Defence need connection is currently published.
Original sources 11 linked records
These records support this capability and its published Mission area and Defence need connections. A source count is not a count of independent confirmations.
- Aethera makes minority equity investment in Ad Astra (opens in a new tab)Open original source: Aethera makes minority equity investment in Ad Astra (opens in a new tab)
Aethera and Ad Astra · Aug 3, 2023
Source details
Source type: official company news
Supports: Capability · summary
The August 2023 release links Aethera’s second-stage PPU to Ad Astra’s July 2021 88-hour, 80 kW engine endurance demonstration. A first-stage PPU was then in manufacturing; 100 kW sustained engine operation and flight readiness were objectives. Engine demonstration power and duration do not restate a 120 kW PPU rating or prove flight.
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