Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Dipole_antenna> ?p ?o }
- Dipole_antenna abstract "In radio and telecommunications a dipole antenna or doublet is the simplest and most widely used class of antenna. It consists of two identical conductive elements such as metal wires or rods, which are usually bilaterally symmetrical. The driving current from the transmitter is applied, or for receiving antennas the output signal to the receiver is taken, between the two halves of the antenna. Each side of the feedline to the transmitter or receiver is connected to one of the conductors. This contrasts with a monopole antenna, which consists of a single rod or conductor with one side of the feedline connected to it, and the other side connected to some type of ground. A common example of a dipole is the \"rabbit ears\" television antenna found on broadcast television sets.The most common form of dipole is two straight rods or wires oriented end to end on the same axis, with the feedline connected to the two adjacent ends. This is the simplest type of antenna from a theoretical point of view. Dipoles are resonant antennas, meaning that the elements serve as resonators, with standing waves of radio current flowing back and forth between their ends. So the length of the dipole elements is determined by the wavelength of the radio waves used. The most common form is the half-wave dipole, in which each of the two rod elements is approximately 1/4 wavelength long, so the whole antenna is a half-wavelength long. The radiation pattern of a vertical dipole is omnidirectional; it radiates equal power in all azimuthal directions perpendicular to the axis of the antenna. For a half-wave dipole the radiation is maximum, 2.15 dBi perpendicular to the antenna axis, falling monotonically with elevation angle to zero on the axis, off the ends of the antenna.Several different variations of the dipole are also used, such as the folded dipole, short dipole, cage dipole, bow-tie, and batwing antenna. Dipoles may be used as standalone antennas themselves, but they are also employed as feed antennas (driven elements) in many more complex antenna types, such as the Yagi antenna, parabolic antenna, reflective array, turnstile antenna, log periodic antenna, and phased array. The dipole was the earliest type of antenna; it was invented by German physicist Heinrich Hertz around 1886 in his pioneering investigations of radio waves.".
- Dipole_antenna thumbnail Half_–_Wave_Dipole.jpg?width=300.
- Dipole_antenna wikiPageExternalLink node94.html.
- Dipole_antenna wikiPageExternalLink lin-ant.pdf.
- Dipole_antenna wikiPageExternalLink reflecti.htm.
- Dipole_antenna wikiPageExternalLink antprojects.htm.
- Dipole_antenna wikiPageExternalLink broaddipole.php.
- Dipole_antenna wikiPageExternalLink 6133.
- Dipole_antenna wikiPageExternalLink 7075.
- Dipole_antenna wikiPageExternalLink ewa.
- Dipole_antenna wikiPageExternalLink 24060.
- Dipole_antenna wikiPageExternalLink designer_tut_2.htm.
- Dipole_antenna wikiPageExternalLink ham_radio10.htm.
- Dipole_antenna wikiPageExternalLink asc_antenna_slides.pdf.
- Dipole_antenna wikiPageID "465156".
- Dipole_antenna wikiPageLength "58807".
- Dipole_antenna wikiPageOutDegree "171".
- Dipole_antenna wikiPageRevisionID "702987680".
- Dipole_antenna wikiPageWikiLink AM_broadcasting.
- Dipole_antenna wikiPageWikiLink Amateur_radio.
- Dipole_antenna wikiPageWikiLink Amateur_radio_operator.
- Dipole_antenna wikiPageWikiLink Antenna_(radio).
- Dipole_antenna wikiPageWikiLink Antenna_array_(electromagnetic).
- Dipole_antenna wikiPageWikiLink Antenna_efficiency.
- Dipole_antenna wikiPageWikiLink Antenna_feed.
- Dipole_antenna wikiPageWikiLink Antenna_gain.
- Dipole_antenna wikiPageWikiLink Antenna_tuner.
- Dipole_antenna wikiPageWikiLink Azimuth.
- Dipole_antenna wikiPageWikiLink Balun.
- Dipole_antenna wikiPageWikiLink Band_I.
- Dipole_antenna wikiPageWikiLink Band_III.
- Dipole_antenna wikiPageWikiLink Basis_function.
- Dipole_antenna wikiPageWikiLink Batwing_antenna.
- Dipole_antenna wikiPageWikiLink Capacitance.
- Dipole_antenna wikiPageWikiLink Category:Antennas_(radio).
- Dipole_antenna wikiPageWikiLink Category:Articles_containing_video_clips.
- Dipole_antenna wikiPageWikiLink Category:Heinrich_Hertz.
- Dipole_antenna wikiPageWikiLink Category:Radio_frequency_antenna_types.
- Dipole_antenna wikiPageWikiLink Category:Radio_technology.
- Dipole_antenna wikiPageWikiLink Coaxial_antenna.
- Dipole_antenna wikiPageWikiLink Coaxial_cable.
- Dipole_antenna wikiPageWikiLink Collinear_antenna_array.
- Dipole_antenna wikiPageWikiLink Corner_reflector_antenna.
- Dipole_antenna wikiPageWikiLink Decibel.
- Dipole_antenna wikiPageWikiLink Dipole_antenna.
- Dipole_antenna wikiPageWikiLink Dipole_field_strength_in_free_space.
- Dipole_antenna wikiPageWikiLink Dirac_delta_function.
- Dipole_antenna wikiPageWikiLink Directivity.
- Dipole_antenna wikiPageWikiLink Driven_element.
- Dipole_antenna wikiPageWikiLink Electric_arc.
- Dipole_antenna wikiPageWikiLink Electric_field.
- Dipole_antenna wikiPageWikiLink Electrical_length.
- Dipole_antenna wikiPageWikiLink Electrical_reactance.
- Dipole_antenna wikiPageWikiLink Electromagnetic_radiation.
- Dipole_antenna wikiPageWikiLink Electronic_symbol.
- Dipole_antenna wikiPageWikiLink Euler–Mascheroni_constant.
- Dipole_antenna wikiPageWikiLink FM_broadcasting.
- Dipole_antenna wikiPageWikiLink FM_tuner.
- Dipole_antenna wikiPageWikiLink Feed_line.
- Dipole_antenna wikiPageWikiLink Frequency.
- Dipole_antenna wikiPageWikiLink G5RV_antenna.
- Dipole_antenna wikiPageWikiLink Gain_(electronics).
- Dipole_antenna wikiPageWikiLink Ground_(electricity).
- Dipole_antenna wikiPageWikiLink Harmonic_series_(music).
- Dipole_antenna wikiPageWikiLink Heinrich_Hertz.
- Dipole_antenna wikiPageWikiLink High_fidelity.
- Dipole_antenna wikiPageWikiLink High_frequency.
- Dipole_antenna wikiPageWikiLink Impedance_matching.
- Dipole_antenna wikiPageWikiLink Impedance_of_free_space.
- Dipole_antenna wikiPageWikiLink Infinitesimal.
- Dipole_antenna wikiPageWikiLink Integral.
- Dipole_antenna wikiPageWikiLink Inverse-square_law.
- Dipole_antenna wikiPageWikiLink Isotropic_radiator.
- Dipole_antenna wikiPageWikiLink Jed_Buchwald.
- Dipole_antenna wikiPageWikiLink Log-periodic_antenna.
- Dipole_antenna wikiPageWikiLink Lorenz_gauge_condition.
- Dipole_antenna wikiPageWikiLink Mast_radiator.
- Dipole_antenna wikiPageWikiLink Monopole_antenna.
- Dipole_antenna wikiPageWikiLink Near_and_far_field.
- Dipole_antenna wikiPageWikiLink Near_vertical_incidence_skywave.
- Dipole_antenna wikiPageWikiLink Node_(physics).
- Dipole_antenna wikiPageWikiLink Omnidirectional_antenna.
- Dipole_antenna wikiPageWikiLink Parabolic_antenna.
- Dipole_antenna wikiPageWikiLink Phased_array.
- Dipole_antenna wikiPageWikiLink Polarization_(waves).
- Dipole_antenna wikiPageWikiLink Poynting_vector.
- Dipole_antenna wikiPageWikiLink Radiation.
- Dipole_antenna wikiPageWikiLink Radiation_pattern.
- Dipole_antenna wikiPageWikiLink Radiation_resistance.
- Dipole_antenna wikiPageWikiLink Radio.
- Dipole_antenna wikiPageWikiLink Radio_frequency.
- Dipole_antenna wikiPageWikiLink Radio_receiver.
- Dipole_antenna wikiPageWikiLink Radio_wave.
- Dipole_antenna wikiPageWikiLink Reflective_array_antenna.
- Dipole_antenna wikiPageWikiLink Resonator.
- Dipole_antenna wikiPageWikiLink Retarded_potential.
- Dipole_antenna wikiPageWikiLink Shortwave_listening.
- Dipole_antenna wikiPageWikiLink Shortwave_radio.
- Dipole_antenna wikiPageWikiLink Sloper_antenna.
- Dipole_antenna wikiPageWikiLink Solid_angle.