| Customization: | Available |
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| Directionality: | Omnidirectional Antenna |
| Material: | ABS |
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Product Name: Four-constellation full-frequency external choke ring antenna (2D)
Product model: LJ-HEM49A2
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-HEM49A2 |
| 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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