Amplification of Frequency-Swept Signals in a -Band Gyrotron Travelling Wave Amplifier
- Resource Type
- Authors
- Lei Zhang; Peter Cain; Adrian W. Cross; Wenlong He; Craig R. Donaldson
- Source
- IEEE Electron Device Letters. 39:1077-1080
- Subject
- 010302 applied physics
Physics
business.industry
Amplifier
Bandwidth (signal processing)
020206 networking & telecommunications
02 engineering and technology
01 natural sciences
Frequency agility
Electronic, Optical and Magnetic Materials
law.invention
Optics
W band
law
Gyrotron
0103 physical sciences
0202 electrical engineering, electronic engineering, information engineering
Cathode ray
Chirp
Traveling wave
Electrical and Electronic Engineering
business
- Language
- ISSN
- 1558-0563
0741-3106
The frequency agility of a ${W}$ -band gyrotron travelling wave amplifier (gyro-TWA) was demonstrated by the amplification of a frequency-swept input signal (chirp signal). The gyro-TWA was developed to provide high output power and wide bandwidth by using a helically corrugated interaction region. In the experiment a ~0.5-W signal of linearly swept frequency bandwidth of 1 GHz was amplified and a gain of over 30 dB was measured when driven by a 40 keV, 1.5 A, and axis-encircling electron beam.