Extended Range L-Band (C/D-Band) Conformal Antenna

960 - 2000 MHz

SKU: 21-40-41

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Extended Range L-Band (C/D-Band) Conformal Antenna

The 21-40-41 is a conformal annular slot providing extended L-band coverage to cover IFF/TACAN/MIDS and data link frequencies up to 2 GHz. It is designed as a drop on replacement for current TACAN/IFF antennas fitted to certain aircraft.

The antenna is produced as a machined aluminum alloy ‘dish’ with a high temperature glass epoxy radome covering the annular slot. The antenna is fully sealed and all internal cavities are filled with closed cell foam to prevent long term moisture ingress

  • Drop-on replacement for current TACAN/IFF antennas
  • Zero drag, fully conformal design
  • Suitable for Mach 2.5+
  • Exceptional gain and patterns throughout frequency band
  • High power 2kW Peak, 200 CW
  • Designed to MIL-STD-810 environmentall
  • Fully sealed design 
21-40-41
Model # 21-40-41
Brand Cooper Antennas
Frequency 960 - 2000 MHz 
Gain (typical at Beam maximum) +2.5 dBi average full band 
VSWR

≤ 2.0:1 max (960-1500 MHz)

≤ 2.5:1 max (1500-2000 MHz) 

Impedance (nominal) 50 Ohms
Power 2KW Peak, 200 Watts CW
Polarization Vertical
Radiation Omni-directional in azimuth, similar to λ/4 monopole in elevation. 
Antenna RF Connector  HN Female
Overall Height Conformal Antenna 0.18 inches flange thickness 1.625 inches below A/C skin
Diameter  8.25 inches 
Weight 1.4 lbs approx 

Finish

  • Grey Urethane to MIL-PRF-85285 #36270
  • Other finish options are available.
  • Please specify finish required when ordering.
Datasheet:

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