View PDF brochure for L1 Active GPS AntennaDatasheet

L1 Active GPS Antenna

1575.42 ± 12 MHz

SKU: 21-45-02

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L1 Active GPS Antenna

The 21-45-02 antenna is designed to provide operation at the L1 frequency. It is of low profile construction and is supplied in a composite cover with an aluminium alloy baseplate on to which are attached the antenna radiating elements. Within the enclosure is a low noise amplifier (LNA) with a gain of + 33 dB.

The antenna is designed for use on groundplanes of typically 300 mm diameter or more. The antenna operates with nominal Hemispherical coverage in GPS L1 band to allow reception of microwave signals from a number of satellites. 

  • DC grounded for Lightning Protection
  • 33 dB LNA
  • Fully sealed construction for environmental reliability
  • Designed to MIL-STD-810 Environmental conditions  Low Profile
  • Covers L1 Frequency Band
  • Right Hand Circular Polarized 
21-45-02
Model # 21-45-02
Brand Cooper Antennas
Frequency 1575.42 ± 12 MHz 
Gain (nominal at Zenith)  Between 3 - 5 dBic depending upon groundplane 
VSWR ≤ 1.5:1 
Impedance (nominal) 50 Ohms
Power 1 Watt CW 
Polarization Right hand circular
LNA Gain Nominally 33 dB
LNA Noise Figure 2.2 dB  
LNA DC Power 2.5 V / 20 mA 
Antenna RF Connector  TNC Female
Height 0.75 inches (18.97 mm) 
Element Diameter 3.50 inches (88.90mm) 
Weight 0.49 lbs (0.22 kg) max 
Fixing Holes 4 x Ø 0.20 inches (Ø 5.11mm) thru Ø .385 (Ø 9.78) 100º countersunk 

Finish

  • Matt Grey
  • Other finish options are available.
  • Please specify finish required when ordering.
Datasheet:

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