84.40.-x Radiowave and microwave (including millimeter wave) technology; Microwave, submillimeter wave, and radiowave receivers and detectors, see 07.57.Kp; Microwave and radiowave spectrometers, see 07.57.Pt; Electromagnetic wave propagation, see 41.20.Jb
- 84.40.Az Waveguides, transmission lines, striplines
- 84.40.Ba Antennas: theory, components and accessories (for plasma interactions with antennas, see 52.40.Fd in plasma physics)
- 84.40.Dc Microwave circuits
- 84.40.Fe Microwave tubes (e.g., klystrons, magnetrons, traveling-wave, backward-wave tubes, etc.)
- 84.40.Ik Masers; gyrotrons (cyclotron-resonance masers)
- 84.40.Lj Microwave integrated electronics
- 84.40.Ua Telecommunications: signal transmission and processing; communication satellites (for optical communications, see 42.79.Sz in optics)
-
84.40.Xb Telemetry: remote control, remote sensing; radar
(1)
