C/D/E Band Airborne Blade Antenna

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The 21-40-46 is an extended frequency C/D/E (L-Band) airborne blade antenna designed for supersonic aircraft and covering data link as well as Tacan and IFF frequencies. It is a direct footprint replacement for certain currently used UHF/Lband antennas.

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

Mechanical design uses an advanced, glass-loaded thermoplastic radome with a 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, TNC male coaxial connectors.

Different base configurations can be provided.

Suitable for Mach 2.5
Low profile, diamond shaped blade
Designed to meet MIL-STD-810
Fully Environmentally sealed
Base contoured to suit aircraft skinline
Grounded for lightning protection
Lossless matching—high RF efficiency
Omnidirectional radiation pattern

	21-40-46
Model #	21-40-46
Brand	Cooper Antennas

Frequency	900 - 2500 MHz
Gain (average)	+2.5 dBi
VSWR	≤ 2.5:1
Impedance (nominal)	50 Ohms
Power	200 Watts CW, 2k Watts peak
Polarization	Vertical
Radiation	Omni-directional in azimuth, similar to stub in elevation
Antenna RF Connector	TNC Male