C/D/E Band Airborne Blade Antenna

500 to 2000 MHz

SKU: 21-40-45

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C/D/E Band Airborne Blade Antenna

The 21-40-45 is an extended frequency UHF, C/D airborne blade antenna designed for high performance aircraft and covering data link as well as Tacan and IFF frequencies. 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 is built into a contoured aluminum alloy base collar and has a centrally mounted, N-type female coaxial connector. Different base configurations can be provided.

  • Covers LINK 16, IFF, TACAN, JTIDS & other data links
  • 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
Model # 21-40-45
Brand Cooper Antennas
Frequency 500 - 2000 MHz 
Gain (Average)  ≥1 dBi  
VSWR ≤ 3:1 
Impedance (nominal) 50 Ohms
Power 100 Watts CW
Polarization Vertical
Radiation Omni-directional in azimuth, similar To stub in elevation 
Antenna RF Connector  N Female
Antenna Shell Type Epoxy/fiberglass blade in aluminum alloy base collar 
Element Height 6 inches (152.5mm) max 
Weight 0.9 lbs (0.4 Kg) max 
Side Loading ≥ 8 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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