"7753"^^ . . . "Animation of an omnidirectional half-wave dipole antenna transmitting radio waves. The antenna in the center is two vertical metal rods, with an alternating current applied at its center from a radio transmitter '. Loops of electric field ' leave the antenna and travel away at the speed of light; these are the radio waves. This diagram only shows the radiation in a single plane through the axis, the radiation is symmetrical about the antenna's vertical axis."@en . "Antenna omnidirezionale"@it . "\u0627\u0644\u0647\u0648\u0627\u0626\u064A \u063A\u064A\u0631 \u0627\u0644\u0645\u0648\u062C\u0647 \u0623\u0648 \u0627\u0644\u0647\u0648\u0627\u0626\u064A \u0644\u062C\u0645\u064A\u0639 \u0627\u0644\u0627\u062A\u062C\u0627\u0647\u0627\u062A \u0627\u0644\u0623\u0641\u0642\u064A\u0629 \u0623\u0648 \u0627\u0644\u0647\u0648\u0627\u0626\u064A \u062C\u0627\u0645\u0639 \u0627\u0644\u0627\u062A\u062C\u0627\u0647\u0627\u062A (\u0628\u0627\u0644\u0625\u0646\u062C\u0644\u064A\u0632\u064A\u0629:Omnidirectional antenna) \u0647\u0648 \u0646\u0648\u0639 \u0645\u0646 \u0623\u0646\u0648\u0627\u0639 \u0627\u0644\u0647\u0648\u0627\u0626\u064A\u0627\u062A \u0627\u0644\u0631\u0627\u062F\u064A\u0648\u064A\u0629 \u0648\u0627\u0644\u0630\u064A \u064A\u0628\u062B \u0627\u0644\u0645\u0648\u062C\u0627\u062A \u0627\u0644\u0631\u0627\u062F\u064A\u0648\u064A\u0629 \u0628\u0634\u0643\u0644 \u0645\u062A\u0633\u0627\u0648\u064D \u0625\u0644\u0649 \u0643\u0644 \u0627\u0644\u0627\u062A\u062C\u0627\u0647\u0627\u062A \u0639\u0644\u0649 \u0645\u0633\u062A\u0648\u0649 \u0648\u0627\u062D\u062F\u060C \u062A\u0646\u0642\u0635 \u0642\u062F\u0631\u0629 \u0627\u0644\u0628\u062B \u0628\u0646\u0627\u0621 \u0639\u0644\u0649 \u0632\u0627\u0648\u064A\u0629 \u0627\u0644\u0627\u0631\u062A\u0641\u0627\u0639 \u0633\u0648\u0627\u0621\u064B \u0625\u0644\u0649 \u0627\u0644\u0623\u0639\u0644\u0649 \u0623\u0648 \u0625\u0644\u0649 \u0627\u0644\u0623\u0633\u0641\u0644 \u0645\u0646 \u0645\u0633\u062A\u0648\u0649 \u0627\u0644\u0628\u062B \u0627\u0644\u0631\u0627\u062F\u064A\u0648\u064A\u060C \u0648\u0639\u0644\u0649 \u0645\u062D\u0648\u0631 \u0627\u0644\u0647\u0648\u0627\u0626\u064A \u062A\u0643\u0648\u0646 \u0627\u0644\u0642\u062F\u0631\u0629 \u062A\u0633\u0627\u0648\u064A \u0635\u0641\u0631. \u0639\u0627\u062F\u0629 \u064A\u064F\u0634\u0628\u064E\u0651\u0647 \u0634\u0643\u0644 \u0646\u0633\u0642 \u0625\u0634\u0639\u0627\u0639 \u0644\u0644\u0647\u0648\u0627\u0626\u064A Omni (\u0628\u0627\u0644\u0625\u0646\u062C\u0644\u064A\u0632\u064A\u0629:Radiation Pattern) \u0628\u0634\u0643\u0644 \u00AB\u0642\u0637\u0639\u0629 \u0627\u0644\u062F\u0648\u0646\u0627\u062A\u00BB. \u0647\u0630\u0627 \u0627\u0644\u0647\u0648\u0627\u0626\u064A \u0634\u0627\u0626\u0639 \u0628\u0627\u0644\u0627\u0633\u062A\u062E\u062F\u0627\u0645 \u0644\u0644\u0628\u062B \u0627\u0644\u0631\u0627\u062F\u064A\u0648\u064A \u0641\u064A \u0627\u0644\u0623\u062C\u0647\u0632\u0629 \u0627\u0644\u062A\u0642\u0646\u064A\u0629 \u0643\u0627\u0644\u0647\u0627\u062A\u0641 \u0627\u0644\u0645\u062D\u0645\u0648\u0644 \u0648\u0648\u062C\u0647\u0627\u0632 \u0627\u0633\u062A\u0642\u0628\u0627\u0644 \u0627\u0644\u0631\u0627\u062F\u064A\u0648 \u0625\u0641 \u0625\u0645 \u0648\u0627\u0644\u0634\u0628\u0643\u0629 \u0627\u0644\u0644\u0627\u0633\u0644\u0643\u064A\u0629 (\u0628\u0627\u0644\u0625\u0646\u062C\u0644\u064A\u0632\u064A\u0629:Wi-Fi) \u0627\u0644\u0645\u0633\u062A\u062E\u062F\u0645 \u0641\u064A \u0627\u0644\u062D\u0627\u0633\u0628 \u0627\u0644\u0622\u0644\u064A \u0623\u0648 \u0627\u0644\u0647\u0627\u062A\u0641 \u0627\u0644\u0645\u062D\u0645\u0648\u0644."@ar . "La \u00FAnica antena totalmente omnidireccional sobre un plano de 3 dimensiones es la , una construcci\u00F3n te\u00F3rica que se usa como antena de referencia para calcular la o la potencia efectiva que radia en los sistemas de radiofrecuencia (habitualmente emisores y receptores de telecomunicaciones). La se suele definir como la eficiencia de la antena multiplicada por la directividad (D) y se suele expresar en decibelios. Pero en realidad, en la pr\u00E1ctica, se consideran y denominan tambi\u00E9n como antena omnidireccional a cualquiera antena que proporciona una radiaci\u00F3n uniforme en uno de los planos de referencia. Usualmente este plano de radiaci\u00F3n uniforme ser\u00E1 el plano paralelo a la superficie de la Tierra."@es . . . "Antena omnidirecional"@pt . . . . . "288"^^ . . . . "En radiodiffusion, une antenne omnidirectionnelle est une classe d'antenne \u00E9mettant une puissance radio \u00E9gale dans toutes les directions perpendiculaires \u00E0 un axe (directions azimutales), d'une puissance variant selon l'angle par rapport \u00E0 l'axe (angle d'\u00E9l\u00E9vation), diminuant \u00E0 z\u00E9ro sur l'axe. Lorsqu'on repr\u00E9sente son diagramme de rayonnement en trois dimensions (voir graphique), on le d\u00E9crit souvent comme un beignet. \u00C0 noter la diff\u00E9rence avec une antenne isotrope, qui \u00E9met une puissance \u00E9gale dans toutes les directions et dont le diagramme de rayonnement est sph\u00E9rique. Les antennes omnidirectionnelles orient\u00E9es verticalement sont largement utilis\u00E9es dans les antennes non directionnelles \u00E0 la surface terrestre, car elles rayonnent de mani\u00E8re \u00E9gale dans toutes les directions horizontales, alors que la puissance rayonn\u00E9e diminue avec l'angle d'\u00E9l\u00E9vation, de sorte que peu d'\u00E9nergie radio est gaspill\u00E9e en \u00E9tant dirig\u00E9e vers le ciel ou la terre. Les antennes omnidirectionnelles sont largement utilis\u00E9es dans les antennes de radiodiffusion et dans les appareils mobiles utilisant la radio tels que les t\u00E9l\u00E9phones portables, les radios FM, les talkies-walkies, les r\u00E9seaux informatiques sans fil, les t\u00E9l\u00E9phones sans fil, le GPS, ainsi que dans les stations de base communiquant avec les radios mobiles, tels que la police, les r\u00E9partiteurs de taxi et les communications a\u00E9riennes. Les types courants d'antennes omnidirectionnelles \u00E0 faible gain sont l'antenne fouet, l', l', l'antenne dipolaire orient\u00E9e verticalement, l'antenne disc\u00F4ne, le , l'antenne cadre horizontale et l\u2019. On peut \u00E9galement construire des antennes omnidirectionnelles \u00E0 gain plus \u00E9lev\u00E9. Un gain plus \u00E9lev\u00E9 signifie dans ce cas que l'antenne rayonne moins d'\u00E9nergie dans les directions pr\u00E8s de l'axe et plus d'\u00E9nergie dans les directions horizontales. On r\u00E9alise g\u00E9n\u00E9ralement les antennes omnidirectionnelles \u00E0 gain \u00E9lev\u00E9 \u00E0 l'aide de r\u00E9seaux d'antennes colin\u00E9aires. Ceux-ci sont constitu\u00E9s de plusieurs antennes dipolaires mont\u00E9es colin\u00E9airement aliment\u00E9es en phase. L'antenne colin\u00E9aire coaxiale (COCO) utilise des sections coaxiales transpos\u00E9es pour produire des radiateurs demi-onde en phase. L'antenne Franklin utilise de courtes sections demi-onde en forme de U dont le rayonnement s'annule dans le champ lointain et \u00E9galise les phases de chaque section dipolaire demi-onde. Un autre type est l' omnidirectionnelle."@fr . . . "Antena dookolna"@pl . . . . "Antena omnidirecional \u00E9 aquela na qual a onda eletromagn\u00E9tica propaga-se em todas as dire\u00E7\u00F5es perpendiculares a um eixo. Esse tipo de antena tem uso facilitado por n\u00E3o precisar de direcionamento, facilitando sua instala\u00E7\u00E3o. S\u00E3o usadas tanto nas esta\u00E7\u00F5es de base quanto nas placas de acesso. Entretanto n\u00E3o funcionam bem para enlaces longos, a n\u00E3o ser que sejam utilizados amplificadores externos. Esse tipo de antena \u00E9 principalmente utilizado para redes wireless."@pt . "\u0647\u0648\u0627\u0626\u064A \u063A\u064A\u0631 \u0645\u0648\u062C\u0647"@ar . "Nelle telecomunicazioni via radio, un'antenna omnidirezionale \u00E8 un tipo di antenna che irradia le onde radio ad una potenza uniforme in tutte le direzioni su un piano, con una potenza irradiata decrescente in relazione all'angolo al di sopra o al di sotto del piano, scendendo fino a zero sull'asse dell'antenna. La potenza irradiata raggiunge il massimo nelle direzioni orizzontali, scendendo a zero direttamente sopra e sotto l'antenna. Il diagramma di radiazione ha forma toroidale ed \u00E8 a volte descritto come \"a forma di ciambella\". Notare che \u00E8 diversa da un'antenna isotropa, astrazione di una antenna ideale che irradia la stessa potenza in tutte le direzioni con un diagramma di radiazione sferico."@it . . . . . "In radio communication, an omnidirectional antenna is a class of antenna which radiates equal radio power in all directions perpendicular to an axis (azimuthal directions), with power varying with angle to the axis (elevation angle), declining to zero on the axis. When graphed in three dimensions (see graph) this radiation pattern is often described as doughnut-shaped. Note that this is different from an isotropic antenna, which radiates equal power in all directions, having a spherical radiation pattern. Omnidirectional antennas oriented vertically are widely used for nondirectional antennas on the surface of the Earth because they radiate equally in all horizontal directions, while the power radiated drops off with elevation angle so little radio energy is aimed into the sky or down towa"@en . . "Una antena omnidireccional \u00E9s aquella antena que radia pot\u00E8ncia de forma uniforme a totes les direccions a l'espai. L'\u00FAnica antena totalment omnidireccional sobre un pla de 3 dimensions \u00E9s l', una construcci\u00F3 teorica que s'usa com a antena de refer\u00E8ncia per a calcular el o la pot\u00E8ncia efectiva que radia en els sistemes de radiofreq\u00FCencia (habitualment emissors i receptors de telecomunicacions). El se sol definir com l'efici\u00E8ncia de l'antena multiplicada per la (D) i se sol expressar en decibels."@ca . "En radiodiffusion, une antenne omnidirectionnelle est une classe d'antenne \u00E9mettant une puissance radio \u00E9gale dans toutes les directions perpendiculaires \u00E0 un axe (directions azimutales), d'une puissance variant selon l'angle par rapport \u00E0 l'axe (angle d'\u00E9l\u00E9vation), diminuant \u00E0 z\u00E9ro sur l'axe. Lorsqu'on repr\u00E9sente son diagramme de rayonnement en trois dimensions (voir graphique), on le d\u00E9crit souvent comme un beignet. \u00C0 noter la diff\u00E9rence avec une antenne isotrope, qui \u00E9met une puissance \u00E9gale dans toutes les directions et dont le diagramme de rayonnement est sph\u00E9rique. Les antennes omnidirectionnelles orient\u00E9es verticalement sont largement utilis\u00E9es dans les antennes non directionnelles \u00E0 la surface terrestre, car elles rayonnent de mani\u00E8re \u00E9gale dans toutes les directions horizontales, "@fr . . . "Una antena omnidireccional \u00E9s aquella antena que radia pot\u00E8ncia de forma uniforme a totes les direccions a l'espai. L'\u00FAnica antena totalment omnidireccional sobre un pla de 3 dimensions \u00E9s l', una construcci\u00F3 teorica que s'usa com a antena de refer\u00E8ncia per a calcular el o la pot\u00E8ncia efectiva que radia en els sistemes de radiofreq\u00FCencia (habitualment emissors i receptors de telecomunicacions). El se sol definir com l'efici\u00E8ncia de l'antena multiplicada per la (D) i se sol expressar en decibels. Per\u00F2 en realitat, a la pr\u00E0ctica, considerarem i anomenarem tamb\u00E9 com a antena omnidireccional a qualsevol antena que proporcioni una radiaci\u00F3 uniforme en un dels plans de refer\u00E8ncia encara que sigui directiva en l'altre. Usualment aquest pla de radiaci\u00F3 uniforme ser\u00E0 el pla paral\u00B7lel a la superf\u00EDcie de la Terra."@ca . . "Antena omnidireccional"@es . . . . . . "L-over2-rad-pat-per.jpg"@en . . . "The radiation pattern of a simple omnidirectional antenna, a vertical half-wave dipole antenna. In this graph the antenna is at the center of the \"donut,\" or torus. Radial distance from the center represents the power radiated in that direction. The power radiated is maximum in horizontal directions, dropping to zero directly above and below the antenna."@en . . "center"@en . "282"^^ . . . "Dipole xmting antenna animation 4 408x318x150ms.gif"@en . . . . . . . . . "Rundstrahlantennen, auch Rundstrahler, sind Antennen, die zur Abstrahlung von hochfrequenten elektromagnetischen Schwingungen verwendet werden. Der Begriff \u201Erundstrahlend\u201C bezeichnet dabei die nach allen Richtungen (in der horizontalen Ebene) gleichf\u00F6rmige Abstrahlcharakteristik der Antenne. Typische Rundstrahler sind Stabantennen von Handfunkger\u00E4ten, vertikale Dipole, der Koaxialdipol und die Groundplane-Antenne."@de . . . . . "Nelle telecomunicazioni via radio, un'antenna omnidirezionale \u00E8 un tipo di antenna che irradia le onde radio ad una potenza uniforme in tutte le direzioni su un piano, con una potenza irradiata decrescente in relazione all'angolo al di sopra o al di sotto del piano, scendendo fino a zero sull'asse dell'antenna. La potenza irradiata raggiunge il massimo nelle direzioni orizzontali, scendendo a zero direttamente sopra e sotto l'antenna. Il diagramma di radiazione ha forma toroidale ed \u00E8 a volte descritto come \"a forma di ciambella\". Notare che \u00E8 diversa da un'antenna isotropa, astrazione di una antenna ideale che irradia la stessa potenza in tutte le direzioni con un diagramma di radiazione sferico. Le antenne omnidirezionali posizionate con l'asse verticale sono spesso usate come antenne non-direzionali rispetto alla superficie terrestre, dato che irradiano uniformemente in tutte le direzioni orizzontali e la potenza irradiata scende con l'aumentare dell'angolo, facendo s\u00EC che venga dispersa poca energia verso il cielo o verso il terreno. Le antenne omnidirezionali sono spesso usate dalle emittenti radiofoniche e nei dispositivi mobili che usano la radio come i telefoni cellulari, le radio FM, i walkie-talkie, reti wireless, telefoni cordless, GPS oltre alle stazioni radio base che comunicano con radio mobili, come quelle della polizia e dei radio-taxi e le comunicazioni tra aerei."@it . "Antenne omnidirectionnelle"@fr . . "Antena dookolna \u2013 antena, kt\u00F3rej fale rozchodz\u0105 si\u0119 z jednakowym nat\u0119\u017Ceniem w ka\u017Cdym kierunku w jednej p\u0142aszczy\u017Anie. Antena dookolna (rzeczywista) to antena, kt\u00F3rej spadek mocy promieniowania wzd\u0142u\u017C wektora H jest nie wi\u0119kszy ni\u017C 3 dB (po\u0142owa mocy) (maksymalny spadek mocy w stosunku do szczytowego zysku jest mniejszy od 3 dB) [definicja \u0141ukasika]. Ze wzgl\u0119du na swoj\u0105 charakterystyk\u0119 anteny dookolne nadaj\u0105 si\u0119 g\u0142\u00F3wnie do zastosowa\u0144 mobilnych, chocia\u017C zastosowania stacjonarne te\u017C s\u0105 mo\u017Cliwe Anteny dookolne ze wzgl\u0119du na budow\u0119 dziel\u0105 si\u0119 na: \n* anteny dipolowe \u0107wier\u0107falowe \u2013 d\u0142ugo\u015B\u0107 promiennika jest r\u00F3wna \u00BC\u03BB; antena wymaga zastosowania przeciwwag, \n* anteny dipolowe p\u00F3\u0142falowe \u2013 anteny o d\u0142ugo\u015Bci promiennika r\u00F3wnej \u00BD\u03BB, zasilane \u201Eod do\u0142u\u201D, tzn. linia zasilaj\u0105ca jest pod\u0142\u0105czona do dolnej cz\u0119\u015Bci anteny poprzez transformator impedancji; anteny tego typu nie wymagaj\u0105 przeciwwag do prawid\u0142owej pracy, \n* anteny dipolowe \u215D\u03BB \u2013 niewymagaj\u0105ce transformatora impedancji, kt\u00F3re powinny by\u0107 wyposa\u017Cone w przeciwwagi (zazwyczaj o d\u0142ugo\u015Bci \u00BC\u03BB), \n* anteny n\u00D7\u00BD\u03BB \u2013 g\u0142\u00F3wnie anteny szczelinowe (falowodowe) i anteny kolinearne; u\u017Cywane wy\u0142\u0105cznie przy wysokich cz\u0119stotliwo\u015Bciach (rz\u0119du kilku-kilkunastu GHz), ze wzgl\u0119du na ma\u0142\u0105 d\u0142ugo\u015B\u0107 fali przy tych cz\u0119stotliwo\u015Bciach maj\u0105ce bardzo wysoki zysk, dochodz\u0105cy do 20 dBi (zale\u017Cnie od n); nie wykorzystuj\u0105ce przeciwwag. Typowymi antenami dookolnymi s\u0105 anteny dipolowe, i szczelinowe (falowodowe)."@pl . . "1070874230"^^ . . . "\u0627\u0644\u0647\u0648\u0627\u0626\u064A \u063A\u064A\u0631 \u0627\u0644\u0645\u0648\u062C\u0647 \u0623\u0648 \u0627\u0644\u0647\u0648\u0627\u0626\u064A \u0644\u062C\u0645\u064A\u0639 \u0627\u0644\u0627\u062A\u062C\u0627\u0647\u0627\u062A \u0627\u0644\u0623\u0641\u0642\u064A\u0629 \u0623\u0648 \u0627\u0644\u0647\u0648\u0627\u0626\u064A \u062C\u0627\u0645\u0639 \u0627\u0644\u0627\u062A\u062C\u0627\u0647\u0627\u062A (\u0628\u0627\u0644\u0625\u0646\u062C\u0644\u064A\u0632\u064A\u0629:Omnidirectional antenna) \u0647\u0648 \u0646\u0648\u0639 \u0645\u0646 \u0623\u0646\u0648\u0627\u0639 \u0627\u0644\u0647\u0648\u0627\u0626\u064A\u0627\u062A \u0627\u0644\u0631\u0627\u062F\u064A\u0648\u064A\u0629 \u0648\u0627\u0644\u0630\u064A \u064A\u0628\u062B \u0627\u0644\u0645\u0648\u062C\u0627\u062A \u0627\u0644\u0631\u0627\u062F\u064A\u0648\u064A\u0629 \u0628\u0634\u0643\u0644 \u0645\u062A\u0633\u0627\u0648\u064D \u0625\u0644\u0649 \u0643\u0644 \u0627\u0644\u0627\u062A\u062C\u0627\u0647\u0627\u062A \u0639\u0644\u0649 \u0645\u0633\u062A\u0648\u0649 \u0648\u0627\u062D\u062F\u060C \u062A\u0646\u0642\u0635 \u0642\u062F\u0631\u0629 \u0627\u0644\u0628\u062B \u0628\u0646\u0627\u0621 \u0639\u0644\u0649 \u0632\u0627\u0648\u064A\u0629 \u0627\u0644\u0627\u0631\u062A\u0641\u0627\u0639 \u0633\u0648\u0627\u0621\u064B \u0625\u0644\u0649 \u0627\u0644\u0623\u0639\u0644\u0649 \u0623\u0648 \u0625\u0644\u0649 \u0627\u0644\u0623\u0633\u0641\u0644 \u0645\u0646 \u0645\u0633\u062A\u0648\u0649 \u0627\u0644\u0628\u062B \u0627\u0644\u0631\u0627\u062F\u064A\u0648\u064A\u060C \u0648\u0639\u0644\u0649 \u0645\u062D\u0648\u0631 \u0627\u0644\u0647\u0648\u0627\u0626\u064A \u062A\u0643\u0648\u0646 \u0627\u0644\u0642\u062F\u0631\u0629 \u062A\u0633\u0627\u0648\u064A \u0635\u0641\u0631. \u0639\u0627\u062F\u0629 \u064A\u064F\u0634\u0628\u064E\u0651\u0647 \u0634\u0643\u0644 \u0646\u0633\u0642 \u0625\u0634\u0639\u0627\u0639 \u0644\u0644\u0647\u0648\u0627\u0626\u064A Omni (\u0628\u0627\u0644\u0625\u0646\u062C\u0644\u064A\u0632\u064A\u0629:Radiation Pattern) \u0628\u0634\u0643\u0644 \u00AB\u0642\u0637\u0639\u0629 \u0627\u0644\u062F\u0648\u0646\u0627\u062A\u00BB. \u0647\u0630\u0627 \u0627\u0644\u0647\u0648\u0627\u0626\u064A \u0634\u0627\u0626\u0639 \u0628\u0627\u0644\u0627\u0633\u062A\u062E\u062F\u0627\u0645 \u0644\u0644\u0628\u062B \u0627\u0644\u0631\u0627\u062F\u064A\u0648\u064A \u0641\u064A \u0627\u0644\u0623\u062C\u0647\u0632\u0629 \u0627\u0644\u062A\u0642\u0646\u064A\u0629 \u0643\u0627\u0644\u0647\u0627\u062A\u0641 \u0627\u0644\u0645\u062D\u0645\u0648\u0644 \u0648\u0648\u062C\u0647\u0627\u0632 \u0627\u0633\u062A\u0642\u0628\u0627\u0644 \u0627\u0644\u0631\u0627\u062F\u064A\u0648 \u0625\u0641 \u0625\u0645 \u0648\u0627\u0644\u0634\u0628\u0643\u0629 \u0627\u0644\u0644\u0627\u0633\u0644\u0643\u064A\u0629 (\u0628\u0627\u0644\u0625\u0646\u062C\u0644\u064A\u0632\u064A\u0629:Wi-Fi) \u0627\u0644\u0645\u0633\u062A\u062E\u062F\u0645 \u0641\u064A \u0627\u0644\u062D\u0627\u0633\u0628 \u0627\u0644\u0622\u0644\u064A \u0623\u0648 \u0627\u0644\u0647\u0627\u062A\u0641 \u0627\u0644\u0645\u062D\u0645\u0648\u0644."@ar . . . "In radio communication, an omnidirectional antenna is a class of antenna which radiates equal radio power in all directions perpendicular to an axis (azimuthal directions), with power varying with angle to the axis (elevation angle), declining to zero on the axis. When graphed in three dimensions (see graph) this radiation pattern is often described as doughnut-shaped. Note that this is different from an isotropic antenna, which radiates equal power in all directions, having a spherical radiation pattern. Omnidirectional antennas oriented vertically are widely used for nondirectional antennas on the surface of the Earth because they radiate equally in all horizontal directions, while the power radiated drops off with elevation angle so little radio energy is aimed into the sky or down toward the earth and wasted. Omnidirectional antennas are widely used for radio broadcasting antennas, and in mobile devices that use radio such as cell phones, FM radios, walkie-talkies, wireless computer networks, cordless phones, GPS, as well as for base stations that communicate with mobile radios, such as police and taxi dispatchers and aircraft communications."@en . . . . . "Antena dookolna \u2013 antena, kt\u00F3rej fale rozchodz\u0105 si\u0119 z jednakowym nat\u0119\u017Ceniem w ka\u017Cdym kierunku w jednej p\u0142aszczy\u017Anie. Antena dookolna (rzeczywista) to antena, kt\u00F3rej spadek mocy promieniowania wzd\u0142u\u017C wektora H jest nie wi\u0119kszy ni\u017C 3 dB (po\u0142owa mocy) (maksymalny spadek mocy w stosunku do szczytowego zysku jest mniejszy od 3 dB) [definicja \u0141ukasika]. Ze wzgl\u0119du na swoj\u0105 charakterystyk\u0119 anteny dookolne nadaj\u0105 si\u0119 g\u0142\u00F3wnie do zastosowa\u0144 mobilnych, chocia\u017C zastosowania stacjonarne te\u017C s\u0105 mo\u017Cliwe Anteny dookolne ze wzgl\u0119du na budow\u0119 dziel\u0105 si\u0119 na:"@pl . "horizontal"@en . . . . . . "Rundstrahlantennen, auch Rundstrahler, sind Antennen, die zur Abstrahlung von hochfrequenten elektromagnetischen Schwingungen verwendet werden. Der Begriff \u201Erundstrahlend\u201C bezeichnet dabei die nach allen Richtungen (in der horizontalen Ebene) gleichf\u00F6rmige Abstrahlcharakteristik der Antenne. Typische Rundstrahler sind Stabantennen von Handfunkger\u00E4ten, vertikale Dipole, der Koaxialdipol und die Groundplane-Antenne. Die rundstrahlende Charakteristik ist insbesondere bei beweglichen Funksendern oder \u2013 gem\u00E4\u00DF der Reziprozit\u00E4t \u2013 auch Empf\u00E4ngern von Vorteil, wie z. B. Autoradio, Taxifunk oder bei Handfunkger\u00E4ten."@de . . "Antena omnidireccional"@ca . . "La \u00FAnica antena totalmente omnidireccional sobre un plano de 3 dimensiones es la , una construcci\u00F3n te\u00F3rica que se usa como antena de referencia para calcular la o la potencia efectiva que radia en los sistemas de radiofrecuencia (habitualmente emisores y receptores de telecomunicaciones). La se suele definir como la eficiencia de la antena multiplicada por la directividad (D) y se suele expresar en decibelios."@es . "Rundstrahlantenne"@de . . . . . . . "Antena omnidirecional \u00E9 aquela na qual a onda eletromagn\u00E9tica propaga-se em todas as dire\u00E7\u00F5es perpendiculares a um eixo. Esse tipo de antena tem uso facilitado por n\u00E3o precisar de direcionamento, facilitando sua instala\u00E7\u00E3o. S\u00E3o usadas tanto nas esta\u00E7\u00F5es de base quanto nas placas de acesso. Entretanto n\u00E3o funcionam bem para enlaces longos, a n\u00E3o ser que sejam utilizados amplificadores externos. Esse tipo de antena \u00E9 principalmente utilizado para redes wireless."@pt . "342372"^^ . . "Omnidirectional antenna"@en . . . .