Physics & Astronomy
gyroscopes
100%
traveling wave amplifiers
90%
cusps
76%
electron guns
55%
corrugated waveguides
54%
electron beams
40%
broadband
39%
backward waves
37%
output
29%
simulation
26%
amplifiers
25%
microwaves
24%
oscillators
24%
couplers
22%
bandwidth
22%
millimeter waves
20%
interactions
19%
accumulators
14%
frequency ranges
14%
waveguides
13%
cavities
12%
wave interaction
11%
harmonics
11%
recovery
8%
orbits
8%
beam currents
7%
electrons
7%
vacuum
7%
directivity
7%
performance
6%
superhigh frequencies
6%
cyclotrons
6%
triodes
6%
circular waveguides
6%
masers
5%
cyclotron resonance
5%
optimization
5%
Engineering & Materials Science
Waveguides
62%
Electron guns
49%
Electron beams
47%
Microwaves
25%
Circular waveguides
17%
Frequency bands
15%
Computer simulation
15%
Millimeter waves
15%
Pulse repetition rate
12%
Multilayers
10%
Vacuum
10%
Amplification
8%
Experiments
7%
Wigglers
7%
Radar
6%
Submillimeter waves
6%
Cyclotron resonance
6%
Cyclotrons
5%
Orbits
5%
Masers
5%
Terahertz waves
5%
Frequency agility
5%