Statements (57)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:radio_station
|
| gptkbp:application |
gptkb:broadcasting
Communication systems Amateur radio |
| gptkbp:benefits |
Easy to construct and install
Requires space for installation |
| gptkbp:characteristic |
Wide bandwidth
Simple construction Omnidirectional radiation pattern in the horizontal plane |
| gptkbp:color_scheme |
Linear polarization
|
| gptkbp:construction_material |
Copper or aluminum
|
| gptkbp:design |
Two conductive elements
|
| gptkbp:feed_line |
Coaxial cable or ladder line
|
| gptkbp:feed_system |
Center of the antenna
|
| gptkbp:function |
Radiate electromagnetic waves
|
| gptkbp:ground_effect |
Performance can be affected by nearby ground
|
| gptkbp:has_variations |
gptkb:Half-wave_dipole
gptkb:Quarter-wave_dipole Folded dipole |
| gptkbp:history |
Developed in the early 20th century
|
| https://www.w3.org/2000/01/rdf-schema#label |
Dipole antenna
|
| gptkbp:impedance |
Typically 73 ohms at resonance
|
| gptkbp:increased |
Typically around 2.15 d Bi
|
| gptkbp:installation |
Can be installed horizontally or vertically
|
| gptkbp:is_often_used_in |
Used in academic research
Used in mobile applications Used in educational demonstrations Used in military applications Used in scientific research Used in hobbyist projects Used in amateur radio contests Used in antenna testing Used in emergency communication Used in field day operations Used in fixed installations Used in home installations Used in portable operations Used in radar systems Used in remote sensing Used in satellite communication Used in telemetry Used in television and radio broadcasting Used in wireless communication |
| gptkbp:length |
Half of the wavelength of the frequency used
Length = 468 / frequency in MHz |
| gptkbp:match_type |
Balun may be used for impedance matching
|
| gptkbp:radiation_efficiency |
High efficiency at resonance
|
| gptkbp:radiation_pattern |
Figure-eight pattern in the vertical plane
|
| gptkbp:related_concept |
gptkb:Log-periodic_antenna
gptkb:Monopole_antenna gptkb:Yagi-Uda_antenna Antenna array |
| gptkbp:theory |
Based on the principle of electromagnetic radiation
|
| gptkbp:tuning |
Can be tuned for different frequencies
|
| gptkbp:type |
Radio antenna
|
| gptkbp:bfsParent |
gptkb:UHF_Radio
|
| gptkbp:bfsLayer |
5
|