antenna measurements

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• Antenna measurement — techniques refers to the testing of antennas to ensure that the antenna meets specifications or simply to characterize it. Typical parameters of antennas are gain, radiation pattern, beamwidth, polarization, and impedance.The antenna pattern is… …   Wikipedia

• Antenna (radio) — Whip antenna on car …   Wikipedia

• Reference antenna — A reference antenna is an antenna with known performance. It is normally used to calibrate other systems.Reference antennas are built with particular care taken to make them simple, robust and repeatable. In a common usage scenario a reference… …   Wikipedia

• Dipole antenna — A schematic of a half wave dipole antenna connected to an unbalanced coaxial cable. Better practice is to connect the balanced dipole to the unbalanced line with a balun. A dipole antenna is a radio antenna that can be made of a simple wire, with …   Wikipedia

• Laser Interferometer Space Antenna — For other uses of this acronym, see LISA (disambiguation). Laser Interferometer Space Antenna Artist s conception of LISA spacecraft Operator ESA, NASA Satellite of Sun The Laser Interfe …   Wikipedia

• Discone antenna — Mounted discone antenna designed for VHF and UHF coverage …   Wikipedia

• Folded unipole antenna — The folded unipole antenna was first devised for broadcast use by the late John H. Mullaney, an American radio broadcast pioneer, and consulting engineer. Designed to solve some difficult problems with existing medium wave (MW) amplitude… …   Wikipedia

• Horn Antenna — Infobox nrhp name =Horn Antenna nrhp type = nhl caption = location= Holmdel, New Jersey USA lat degrees = 40 lat minutes = 23 lat seconds = 29.43 lat direction = N long degrees = 74 long minutes = 11 long seconds = 6.91 long direction = W… …   Wikipedia

• Choke ring antenna — Patent Diagram of a Choke Ring Antenna[1] A choke ring antenna is a particular form of omnidirectional antenna for use at high frequencies. It consists of a number of conductive concentric cylinders around a central antenna. Due to its delicate… …   Wikipedia

• Evolved antenna — Evolved antennas are antennas designed fully or substantially by an automatic design procedure mimicking Darwinian evolution. The first evolved antenna designs appeared in the mid 1990s from the work of Michielssen, Altshuler, Linden, Haupt, and… …   Wikipedia

• Decibel — This article is about the ratio of measures. For sound or acoustic level, see Sound pressure. For other uses, see Decibel (disambiguation). Attenuation chart of an RG 6 Coaxial cable, measured in decibels per 100 feet of cable The decibel (dB) is …   Wikipedia