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GSM Airborne Blade Antenna

850 to 1900 MHz

SKU: 21-40-45-4

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GSM Airborne Blade Antenna

The 21-40-45-4 is a wide band UHF and C/D airborne blade antenna designed for high performance aircraft covering the GSM frequency band. It is a direct footprint replacement for AT256 UHF Blade antennas.

Electrical design is based on a 2-dimensional, shunt-grounded discone which is of high efficiency and provides nearly omnidirectional azimuthal radiation.

Mechanical design uses an advanced, glass-loaded thermoplastic radome with an integral radiating element, all foamed-in-place for structural and environmental integrity.

The blade has an aluminum alloy baseplate with a centrally mounted, N-type female coaxial connector.

  • Covers full GSM Band
  • Low profile, diamond shaped blade
  • Designed to meet MIL-STD-810
  • Fully environmentally sealed
  • Grounded for lightning protection
  • Lossless matching - high RF efficiency
  • Omnidirectional radiation pattern
21-40-45-4
Model # 21-40-45-4
Brand Cooper Antennas
Frequency 850 - 1900 MHz
Gain (average) ≥2 dBi 
VSWR ≤ 2.5:1 
Impedance (nominal) 50 Ohms
Power 50 Watts CW
Polarization Vertical
Radiation Omni-directional in azimuth, similar To stub in elevation
Antenna RF Connector  N Female
Antenna Shell Type Glass loaded thermoplastic blade
Element Height 6 inches (152.5mm) max 
Weight 0.9 lbs (0.4 Kg) max 
Side Loading ≥ 6 psi ultimate
Base Plate Shape Diamond shape
Fixing Holes 6 x Ø 0.203 inch (5.2mm) holes, counter bored Ø 0.43 inches (10.9mm) 

Finish

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

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