Statements (50)
| Predicate | Object |
|---|---|
| gptkbp:instance_of |
gptkb:radio_station
|
| gptkbp:application |
amateur radio
|
| gptkbp:color_scheme |
linear polarization
|
| gptkbp:constructed_in |
can be made from wire
|
| gptkbp:construction_material |
can use copper or aluminum
|
| gptkbp:coverage |
provides omnidirectional coverage in the horizontal plane
|
| gptkbp:design |
simple and effective
|
| gptkbp:design_simplicity |
known for design simplicity
|
| gptkbp:directionality |
not directional in the horizontal plane
|
| gptkbp:element |
two elements
|
| gptkbp:element_spacing |
elements are spaced 1/4 wavelength apart
|
| gptkbp:feed_line |
coaxial cable is commonly used
|
| gptkbp:feed_point_impedance |
varies with height above ground
|
| gptkbp:feed_system |
center fed
|
| gptkbp:field_strength |
field strength varies with orientation
|
| gptkbp:frequency |
provides good signal strength in desired direction
used for specific frequency bands |
| gptkbp:ground_plane |
can be used with a ground plane for vertical configuration
|
| gptkbp:grounding |
proper grounding can improve performance
|
| gptkbp:has_variations |
various design variations exist
|
| gptkbp:height |
should be at least 1/4 wavelength above ground
|
| gptkbp:horizontal_orientation |
can be used in horizontal orientation
|
| https://www.w3.org/2000/01/rdf-schema#label |
Quarter-wave dipole
|
| gptkbp:impedance |
approximately 73 ohms
|
| gptkbp:increased |
around 2.15 d Bi
|
| gptkbp:installation |
easy to install
|
| gptkbp:installation_height |
installation height affects performance
|
| gptkbp:is_often_used_in |
commonly used in VHF and UHF bands
|
| gptkbp:length |
1/4 wavelength
|
| gptkbp:match_type |
requires a matching network for some applications
|
| gptkbp:matching_techniques |
various matching techniques can be applied
|
| gptkbp:matching_transformer |
may be used for better impedance matching
|
| gptkbp:operational_use |
high efficiency at resonance
|
| gptkbp:orbit_type |
a type of half-wave antenna
antenna gain is a key performance metric |
| gptkbp:performance |
good performance for its size
|
| gptkbp:price |
relatively low cost
|
| gptkbp:radiation_efficiency |
typically high
high radiation efficiency at resonance |
| gptkbp:radiation_pattern |
bidirectional
|
| gptkbp:ram |
limited bandwidth compared to other designs
|
| gptkbp:size |
compact compared to other antennas
|
| gptkbp:suitable_for |
suitable for portable operations
|
| gptkbp:tuning |
can be tuned for different frequencies
various tuning methods can be employed |
| gptkbp:type |
radio antenna
|
| gptkbp:vertical_orientation |
can be used in vertical orientation
|
| gptkbp:water_resistance |
can be made weather resistant for outdoor use
|
| gptkbp:bfsParent |
gptkb:Dipole_antenna
|
| gptkbp:bfsLayer |
6
|