directivity of an antenna

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• Antenna gain — is defined as the ratio of the radiation intensity of an antenna in a given direction, to the intensity of the same antenna as it radiates in all directions (isotropically). Since the radiation intensity of an isotropically radiated power is… …   Wikipedia

• Directivity — Diagram showing directivity In electromagnetics, directivity is a figure of merit for an antenna. It measures the power density the antenna radiates in the direction of its strongest emission, versus the power density radiated by an ideal… …   Wikipedia

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

• 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

• directivity — n. the property of a microphone or antenna of being more sensitive to sounds coming from one direction than from another. Syn: directionality. [WordNet 1.5] …   The Collaborative International Dictionary of English

• Microstrip antenna — In telecommunication, there are several types of microstrip antennas (also known as printed antennas) the most common of which is the microstrip patch antenna or patch antenna. A patch antenna is a narrowband, wide beam antenna fabricated by… …   Wikipedia

• antenna directivity diagram — kryptinė antenos diagrama statusas T sritis automatika atitikmenys: angl. antenna directivity diagram vok. Antennenrichtcharakteristik, f; Antennenrichtdiagramm, n rus. диаграмма направленности антенны, f pranc. diagramme de directivité d antenne …   Automatikos terminų žodynas

• directivity — noun 1. the property of a microphone or antenna of being more sensitive in one direction than in another (Freq. 1) the antenna received signals with no directivity • Syn: ↑directionality • Derivationally related forms: ↑directional (for: ↑ …   Useful english dictionary

• directivity — n. property of being directional (of a microphone or antenna) …   English contemporary dictionary

• Beverage antenna — The Beverage Antenna is a relatively inexpensive but very effective long wire receiving antenna used by amateur radio, shortwave listening, and longwave radio DXers and military applications. Harold H. Beverage experimented with receiving… …   Wikipedia

• Metamaterial antenna — This Z antenna tested at the National Institute of Standards and Technology is smaller than a standard antenna with comparable properties. Its high efficiency is derived from the Z element inside the square that acts as a metamaterial, greatly… …   Wikipedia