Klystron Modulators

Klystron modulators are critical to high-power RF systems where precision, stability, and reliability are essential. At Stangenes Industries, we design and manufacture high-voltage, solid-state modulators that meet the demanding requirements of particle accelerators, radar platforms, satellite communications, and free electron lasers. Our systems deliver tightly controlled energy pulses, ensuring consistent performance even in the most challenging environments.

What Are Klystron Modulators?

A klystron modulator is a high-voltage pulse system that delivers short bursts of energy—often several hundred joules—to bias klystron tubes. These tubes amplify RF signals for applications ranging from UHF broadcasting to particle accelerators and free electron lasers. Even minor amplitude variations can impact the gain and phase of RF pulses, which directly affects accelerating field stability in RF cavities.

A huge effort is put into minimizing these variations through the use of klystron modulators and RF pulse regulation. Stangenes’ klystron modulators integrate features such as low-ripple output, droop compensation, and precise switching to support exceptional pulse stability.

Klystron Modulator Applications

Klystrons are specialized linear-beam vacuum tubes that amplify high radio frequencies from UHF through microwave bands. Low-power klystrons are often used in terrestrial microwave relay systems as oscillators, while high-power versions are essential in:

  • Radar and satellite communications
  • Particle accelerators
  • Free electron lasers
  • Radiation therapy systems for oncology
  • UHF television transmitters

In each case, the klystron modulator supplies the precisely timed, high-voltage pulses required for optimal amplifier performance. Stangenes also offers specialized designs, such as the Valhalla series, which uses a patented parallel Marx generator topology with built-in droop compensation and a compact footprint for unique integration needs.

Capabilities and Features of Klystron Modulators

Our modulators are engineered for versatility, efficiency, and reliability. Key capabilities and options include:

  • Output voltages from a few kV to over 200 kV
  • Adjustable pulse widths from 200 ns to 5 ms
  • Repetition rates up to several kHz
  • Average power ratings up to 320 kW
  • Low ripple and noise for signal integrity
  • High efficiency for reduced energy loss
  • EMI/EMC compliance
  • Remote monitoring and control
  • Advanced protection
  • Compact and modular

Stangenes modulators are used in military, medical, and industrial applications, with designs that support high pulse stability for demanding systems.

Stangenes Klystron Solutions Offer Reliability and Range

With decades of expertise in high-voltage pulsed power, Stangenes Industries provides klystron modulators that deliver unmatched performance and reliability. Our solid-state designs support voltages from a few kilovolts to over 200 kV, pulse widths from 200 nanoseconds to 5 milliseconds, and repetition rates up to several kilohertz—all backed by ISO-registered manufacturing.
For more information about our klystron modulators, contact us or request a quote today.