Wideband Antenna

900-3000 MHz

SKU: 21-40-19

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Wideband Antenna

The 21-40-19 is an ultra wideband, airborne ground plane dependant antenna, designed for use in SIGINT type applications where a number of them can be used to provide a DF array. The antenna structure comprises a contoured monocone with careful element shaping to optimize radiation diagram and avoid deep nulls in the elevation pattern throughout the band.

Construction is from high strength fibre glass with a single stud for attachment to the airframe and the whole structure is filled with closed cell foam for long term reliability in world wide condition of service.  

  • Ultra wide-bandwidth
  • Low profile
  • Can be used in arrays
  • Fully sealed construction for environmental reliability
  • Designed to MIL-STD-810 Environmental conditions
21-40-19
Model # 21-40-19
Brand Cooper Antennas
Frequency 900 - 3000 MHz
Gain Typically + 3 dBi (average)
VSWR ≤ 2.5:1 
Impedance (nominal) 50 Ohms
Power 100 Watts (average) 
Phase/Amplitude match The antenna can be selected for phase and amplitude matching for use in DF system, either to a “Golden Standard” or in sets.
Polarization Vertical
Radiation Omni-directional in azimuth, approximately cosinusoidal in elevation 
Antenna RF Connector  TNC Female
Height 2.56 inches (65 mm) 
Base diameter  2.68 inches (68 mm) 
Weight 0.22 lbs (100g) max
Attachment to Airframe Single 5/8” UNEF Stud 

Finish

  • Urethane Lusterless Black
  • Other finish options are available.
  • Please specify finish required when ordering.
Datasheet:

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