Phased array — This article is about general theory and electromagnetic phased array. For the ultrasonic and medical imaging application, see phased array ultrasonics. In wave theory, a phased array is a group of antennas in which the relative phases of the… … Wikipedia
Phased Array Tracking Radar to Intercept Of Target — MIM 104 PATRIOT Start eines PATRIOT Lenkflugkörpers (auf Startgerät US Version) Grunddaten Funktion bodengestützte Mittelstrecken Flugabwehrra … Deutsch Wikipedia
phased array — a radar antenna consisting of an array of dipoles that are excited in or out of phase with each other to control beam direction and radiation pattern without moving the antenna. Cf. dipole (def. 3). [1930 35] * * * … Universalium
phased array — a radar antenna consisting of an array of dipoles that are excited in or out of phase with each other to control beam direction and radiation pattern without moving the antenna. Cf. dipole (def. 3). [1930 35] … Useful english dictionary
Antenna array — may refer to: *an interferometric array of Radio telescopes used in radio astronomy. *a Phased array, also known as a smart antenna, an electronically steerable directional antenna typically used in RADAR and in wireless communication systems, in … Wikipedia
phased-ar|ray — «FAYZD uh RAY», adjective. having or based on a complex of electronically steerable radiating elements in place of a mechanically rotated antenna: »These phased array radars, with computer complexes, could sight incoming missiles more than 1,000… … Useful english dictionary
Antenna (radio) — Whip antenna on car … Wikipedia
Antenna — Contents 1 Science and engineering 1.1 Technology 1.2 Biology … Wikipedia
Antenna-Diversity — Der englische Begriff Antenna Diversity (deutsch Antennendiversität) bezeichnet ein Verfahren, bei dem mehrere Antennen pro Sender oder Empfänger verwendet werden, um Interferenz Effekte bei der Funkübertragung zu reduzieren. Dies ist besonders… … Deutsch Wikipedia
Antenna Diversity — Der englische Begriff Antenna Diversity (deutsch Antennendiversität) bezeichnet ein Verfahren, bei dem mehrere Antennen pro Sender oder Empfänger verwendet werden, um Interferenz Effekte bei der Funkübertragung zu reduzieren. Dies ist besonders… … Deutsch Wikipedia
Phased array may be very simple, consisting of only two elements. Two examples of simple pairs of phased dipoles are shown in the illustration. On the left, two dipoles are spaced quarter wavelength apart in free space, and they are fed 90 degrees out of phase. This results in addition of phase in one direction and cancellation in the other. In this case, radiation pattern is unidirectional. However, phased array may have directional patterns with two, three, or even four different optimum directions. A bi-directional pattern can be obtained by spacing the dipoles at one wavelength and feeding them in phase as is shown in the illustration on the right.