Physics
Microwave
100%
Pulses
76%
Electron Beams
45%
Corrugated Waveguides
44%
Maser
40%
Frequencies
39%
Free Electron
35%
Output
29%
Feedback
29%
Oscillator
26%
Simulation
23%
Amplifier
19%
Mirrors
19%
Region
17%
Backward Waves
15%
Utilization
14%
Helicon
13%
Diameters
11%
Stability
11%
Radiation
11%
Traveling Wave
10%
Bandwidth
10%
Electrons
10%
Broadband
10%
Insulation
10%
Electromagnetic Wave
10%
Gaps
9%
Cyclotron
9%
Media
9%
Variations
8%
Electromagnetic Radiation
8%
Lasing
8%
Laser Plasma Interactions
7%
Frequency Ranges
7%
Diode
6%
Confinement
6%
Defects
6%
Independent Variables
6%
Ion
6%
Performance
6%
Wave Interaction
6%
Harmonics
5%
Heating
5%
Oscillation
5%
Coherent Radiation
5%
Group Velocity
5%
Physics
5%
Engineering
Microwave
19%
Waveguide
18%
Experiments
13%
Simulation
12%
Amplifier
8%
Ka-Band
7%
Pulse Compression
7%
X-Band
7%
W-Band
6%
High Gain
6%
Measurement
6%
Travelling Wave
5%
Earth and Planetary Sciences
Microwave
17%
Corrugated Waveguide
11%
Experiment
10%
Superhigh Frequency
8%
Simulation
7%
Gyroscope
6%
University
5%