In radio-frequency engineering and communications engineering, a waveguide is a hollow metal pipe used to carry radio waves. This type of waveguide is...

waveguides include acoustic waveguides which direct sound, optical waveguides which direct light, and radio-frequency waveguides which direct electromagnetic...

Radio-frequency (RF) engineering is a subset of electrical engineering involving the application of transmission line, waveguide, antenna, radar, and electromagnetic...

case of a waveguide or an antenna, the cutoff frequencies correspond to the lower and upper cutoff wavelengths. In electronics, cutoff frequency or corner...

high frequency (SHF) is the ITU designation for radio frequencies (RF) in the range between 3 and 30 gigahertz (GHz). This band of frequencies is also...

A beam waveguide antenna is a particular type of antenna dish, at which waveguides are used to transmit the radio beam between the large steerable dish...

small. At these frequencies, the radio waves are often conducted by a waveguide, and the antenna consists of slots in the waveguide; this is called a...

The waveguide D band is the range of radio frequencies from 110 GHz to 170 GHz in the electromagnetic spectrum, corresponding to the recommended frequency...

radio spectrum is the part of the electromagnetic spectrum with frequencies from 3 Hz to 3,000 GHz (3 THz). Electromagnetic waves in this frequency range...

Radio waves are a type of electromagnetic radiation with the lowest frequencies and the longest wavelengths in the electromagnetic spectrum, typically...

fiber waveguides, transparent dielectric waveguides made of plastic and glass, liquid light guides, and liquid waveguides. Optical waveguides are used...

waveguide E band is the range of radio frequencies from 60 GHz to 90 GHz in the electromagnetic spectrum, corresponding to the recommended frequency band...

nature of the waveguide produces resonances, like a cavity, which are at ~7 Hz. Radio propagation within the ionosphere depends on frequency, angle of incidence...

A waveguide filter is an electronic filter constructed with waveguide technology. Waveguides are hollow metal conduits inside which an electromagnetic...

flaring metal waveguide shaped like a horn to direct radio waves in a beam. Horns are widely used as antennas at UHF and microwave frequencies, above 300 MHz...

fingertip Electrical resonance of tuned circuits in radios and TVs that allow radio frequencies to be selectively received Creation of coherent light...

their frequencies slightly offset in time, producing tweeks. When the electromagnetic energy from a sferic escapes the Earth-ionosphere waveguide and enters...

conducted experiments at wavelengths of 60 GHz (5 millimeter) and invented waveguides, horn antennas, and semiconductor crystal detectors for use in his experiments...

Very low frequency or VLF is the ITU designation for radio frequencies (RF) in the range of 3–30 kHz, corresponding to wavelengths from 100 to 10 km,...

waveguide F band is the range of radio frequencies from 90 GHz to 140 GHz in the electromagnetic spectrum, corresponding to the recommended frequency...

for time signals and radio navigation systems. At even lower frequencies, in the VLF to ELF bands, an Earth-ionosphere waveguide mechanism allows even...

following is a list of FCC-licensed radio stations in the U.S. state of Iowa, which can be sorted by their call signs, frequencies, cities of license, licensees...

Extremely low frequency (ELF) is the ITU designation for electromagnetic radiation (radio waves) with frequencies from 3 to 30 Hz, and corresponding wavelengths...

antenna/filter/IC packages, Radome, RFIC, MMIC, Antenna Placement, Waveguide (radio frequency), EMI, Frequency selective surfaces (FSS), Electromagnetic metamaterials...

signal remained at its original microwave frequency it would require an expensive and impractical waveguide line. The LNB is usually a small box suspended...

telescopes are the main observing instrument used in radio astronomy, which studies the radio frequency portion of the electromagnetic spectrum, just as optical...

frequency of the signal can be determined by seeing which reed is vibrating the most. Similar systems, "reed receivers" were also used in early radio...

oscillators, an electronic resonator is usually added to control frequency in the form of a waveguide, microwave cavity, or YIG sphere. The diode is usually mounted...

Thermoacoustics Thermoacoustic heat engine Virial theorem Waveguide (acoustics) Waveguide (radio frequency) WKB approximation Ranford, Paul (September 2019)....

change in refractive index with optical frequency. However, in a waveguide there is also the phenomenon of waveguide dispersion, in which case a wave's phase...