TWT Amplifier Delivers 10 kW Through 18 GHz

April 11, 2011
With a modular design, a new traveling-wave-tube (TWT) amplifier provides convenient accessibility to all of its subassemblies. Dubbed the model 177, this amplifier spans 0.7 to 18 GHz and is designed for 0-dBm input level. It provides 10 kW at ...

With a modular design, a new traveling-wave-tube (TWT) amplifier provides convenient accessibility to all of its subassemblies. Dubbed the model 177, this amplifier spans 0.7 to 18 GHz and is designed for 0-dBm input level. It provides 10 kW at duty cycles to 5 percent and pulse widths of 0.1 to 100 s. The amplifier's RF output pulse width tracks the input 5-V video pulse. All of its power supplies are regulated, phase-shifted-resonant-mode, DC-to-DC converter designs operating at 50 kHz. Those power supplies boast full load efficiency greater than 90 percent.

In addition, a fast regulation loop response vows to provide minimal output variations at any pulse repetition frequency (PRF), including non-periodic and burst PRF. The amplifier's powersupply and power-line-related spurious signals fall below -50 dBc. With a four-line vacuum florescence display, the amplifier makes it easy for users to see its status as well as operating and heater time, TWT cathode and collector voltages, and helix and beam current. In addition, all of the parameters available at the front-panel display are available on a remote interface. Plug-in printed-circuit boards (PCBs) are available behind the front-panel door with test points and controls on the exposed edge of the boards. There is no exposed high voltage. Higher duty cycles or wider bandwidth are available upon request.

Applied System Engineering, Inc., 7510 Benbrook Pkwy., Fort Worth, TX 76126; (817) 249-4180, FAX: (817) 249-3413, www.applsys.com.

See Associated Figure

Sponsored Recommendations

Frequency Modulation Fundamentals

March 14, 2024
The development of crystal-clear FM communications was an innovation of genius and toil. Utilized today in applications such as radar, seismology, telemetry and two-way radios...

44 GHz Programmable Signal Generator

March 14, 2024
The Mini-Circuits SSG-44G-RC is a 0.1 to 44 GHz signal source with an RF output range of -40 to +17 dBm with fine resolution. This model supports CW and pulsed (? 0.5 ?s) outputs...

Webinar: Introduction to OTA Measurement for mmWave and Sub-THz

Feb. 19, 2024
Join Jeanmarc Laurent, a leading expert from MilliBox, for an exclusive live webinar showcasing a complete Over-the-Air (OTA) testing system setup. In this immersive session, ...

Using a CMT VNA with Socket Server

Feb. 19, 2024
This application note describes use of a software application CMT Socket Server which is distributed and supported by Aphena Ltd. Please email [email protected] regarding purchase...