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UA91 Antenna
UA91 Antenna
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UA91 - CHOCK RING ANTENNA
Introduction
The eSurvey UA91 adopts a high-gain broadband antenna to receive GNSS signals such as GPS, BDS, GLONASS, Galileo, QZSS, and L-Band. The scheme of multi-stage 3D choke coils with a symmetrical distribution is adopted to achieve higher phase center stability and excellent anti-multipath interference performance. It has excellent performance and the phase center coincides with the mechanical center.
Powerful Satellite Tracking Capacity
Obtain all available and reliable data sources, with total channels and all signals (GPS, BDS, GLONASS, GALILEO, IRNSS, QZSS, and SBAS) of GNSS tracking.
High Phase Center Accuracy
Experience millimeter phase center accuracy with higher stability.
Excellent Multipath Suppression Effect
Due to the unique 3D choke coil design and electrostatic protection against eight kv of air and four kv of static electricity, no longer need to worry about interference by multipath.
Rugged Design for Harsh Environments
Use it for many years with IP67 design, which is 100% protected against solid objects like dust and sand, and it has been tested to work for at least 30 minutes under 15 cm to 1 m of water.
Temperature Performance
The UA91 works in the range of temperatures from -55℃ - to +85℃, and stores in -55℃ - +90℃.
High Gain
The UA91 uses a high-gain wide-band dual-band multimode GNSS measuring antenna to achieve coverage of the GNSS signal reception.
Specification
| UA91 | ||
| Antenna Performance | ||
| Satellites tracking | GPS | L1, L2, L5 |
| BDS | B1, B2, B3 | |
| GLONASS | G1, G2, G3 | |
| GALILEO | E1, E2, E5, E6C | |
| QZSS | L1, L2, L5 | |
| IRNSS | L5 | |
| SBAS | L1 | |
| L-Band | L-Band | |
| Polarization | Right-handed circular | |
| Axis ratio | √ ≤2 dB @Axial √ ≤4 dB @Elevatoion angle 20° |
|
| Antenna gain | √ ≥ 5 dBi @Axial √ ≤ -3 dBi @Elevatoion angle 20° |
|
| Out-of-roundness | ≤ 1 dBi @Elevatoion angle 20° | |
| Phase center offset | ± 1.5 mm | |
| Low Noise Amplifier Performance | ||
| Frequency range | 1525 - 1615 MHz, 1165 - 1278 MHz | |
| Characteristic impedance | 50 Ω | |
| VSWR | ≤ 1.3:1 | |
| Noise figure | 1.6 dB typically @ 25° | |
| LNA gain | 52 ± 2 dB @ 25℃ | |
| LNA noise figure | × | |
| In-band flatness | ± 1.5 dB | |
| Out-of-band suppression | √ L1 ± 200 MHz >40 dBc √ L2 ± 200 MHz >50 dBc |
|
| Differential transmission delay | ≤ 5 ns (L1-L2) | |
| Antenna transmission delay | 15 ns (Typically) | |
| Voltage | 3.3 - 12 V dc | |
| Current | ≤ 45 mA | |
| Environmental Performance | ||
| Operating temperature | -55℃ - +85℃ | |
| Storage temperature | -55℃ - +90℃ | |
| Humidity | Up to 95% | |
| Water/dust proof | IP67 | |
| Dimension | D370 mm x H263 mm | |
| Weight | 7700 g | |
| Antenna interface | TNC-F | |
| Radome material | FRP | |
| Base material | Aluminium magnesium alloy | |
| Mount | 5/8-11 UNC-2B | |
Materials
Materials
Shipping & Returns
Shipping & Returns
Dimensions
Dimensions
Care Instructions
Care Instructions
