L1 Active GPS Antenna

Datasheet

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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