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EA:  AERIAL_TYPE

Status: STD 2005/06/07
Code: 36
Concept definition: The structural type of an <AERIAL>.
 
Attribute value type: ENUMERATION
Reference type:  
Reference:  
Supplemental references:  
Enumerants (presented in a natural order)
Status Attribute label Enumerant label ▾ Concept definition Code Ref type Reference Supplemental references
STD
2005/06/07		 AERIAL_TYPE DIPOLE Composed of two straight rods of equal <<LENGTH>> (corresponding to 1/4 the <<WAVELENGTH>> of the electromagnetic wave being transmitted or received), mounted in line with one another, and having an electrical connection to the centre of the <AERIAL>; dipole [SOED, "dipole", 2]. 1  
STD
2005/06/07		 AERIAL_TYPE HORN An open-ended waveguide, of increasing cross-sectional <<AREA>>, which radiates directly in a desired <DIRECTION> or feeds a reflector that forms a desired beam; horn [ATIS, "horn"]. 3 [APDS, "horn antenna"]
STD
2005/06/07		 AERIAL_TYPE PARABOLIC An <AERIAL> consisting of a parabolic reflector and a radiating or receiving element at or near its focus [ATIS, "parabolic antenna"]. 4 [APDS, "parabolic antenna"]
STD
2005/06/07		 AERIAL_TYPE PHASED_ARRAY A group of <AERIAL>s in which the relative phases of the respective signals feeding the <AERIAL>s are varied in such a way that the effective radiation pattern of the array is reinforced in a desired <DIRECTION> and suppressed in undesired <DIRECTION>s; phased array [ATIS, "phased array"]. 2 [APDS, "phased array"]
STD
2005/06/07		 AERIAL_TYPE WHIP A flexible rod <AERIAL> supported on a base insulator; whip [ATIS, "whip antenna"]. A whip <AERIAL> is usually between 1/10 and 5/8 wavelength long. 5 [APDS, "whip antenna"]
STD
2005/06/07		 AERIAL_TYPE YAGI Composed of a number of short rods mounted transversely on an insulating support; yagi [SOED, "yagi"]. A yagi <AERIAL> is highly directional, receiving or transmitting within a narrow band of <<FREQUENCY>>s. 6  
Group membership:

In addition to the status and date information for each entry, a colour coding scheme highlights the database holding to which an entry belongs. The following highlight colours are used:

  • white - the entry is in the standard
  • yellow - the entry has been added to the register
  • pink - the entry has been submitted for inclusion in the register, but it is not approved
  • cyan - a deprecated entry that was originally either in the standard or was added to the register, but has since been deprecated

The following icons are used to identify items that have figures, modifications and/or clarification notes:

  • F n - has Figures and, if more than one figure, n figures
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