High Precision Positioning and Measurement Antenna for Geodetic Survey, Differential Base Station, Deformation Monitoring

Product Description

Product Description
Product Name: Four- constellation full frequency external choke ring antenna(3D)
Product model: LJ-HEM49A3
Product features:
-The antenna is FCC certified
-The antenna adopts a multi-feed point design and a completely symmetrical structure with a stable phase center ;
-The low noise amplifier has high gain, and the satellite tracking ability is strong even in low elevation environment
Application fields:
It can be widely used in high precision measurement fields, such as geodetic survey, differential base station, deformation monitoring and other fields

Model No	LJ-HEM49A3
Frequency	GPS L1/L2/L5 BDS B1/B2/B3 GLONASS L1/L2 GALILEO El/E2/E5a/E5b
Polarization	R.H.C.P
Gain	elevation90° ≥7dBi
Axial ratio	elevation90°≤3dB
Front-back ratio	elevation90°≥l8dB
Phase center error	±1mm
VSWR	<2.0
LNA Gain	50 ± 2dB
Noise figure	<2.0
Voltage	3.3~12VDC
Impedance	50Ω
Operating current	<40mA
Cross polarization ratio	±60°≥25

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