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TW1825 
Accutenna® Pre-Filtered Embedded Dual-Band GNSS Antenna
- Very low Noise Preamp, 2.5 dB
- Axial ratio: <2 dB typ.
- Tight Phase Center Variation
- LNA Gain 26 dB typ.
- Low current: 12 mA typ.
- ESD circuit protection: 15 KV
- Lightweight (37g)
- Ideal for L1/L5 RTK survey systems
- Great multi-path rejection
- Increased system accuracy
- Excellent signal-to-noise ratio
- IP67, REACH and RoHS compliant
Advanced Multi-Constellation Support with Accutenna® Technology
The TW1825 is a high-performance, lightweight GNSS antenna that leverages Calian’s proprietary Accutenna® technology. It supports a wide range of constellations and frequencies, including:
- GPS/QZSS: L1, L5
- GLONASS: G1
- Galileo: E1, E5
- BeiDou: B1, B2a
- NavIC: E5
- SBAS: WAAS, EGNOS, GAGAN, MSAS
Key Features
Dual-Frequency Precision: Ideal for applications requiring high-accuracy positioning with minimal weight - just 37 grams.
Superior Signal Quality: Delivers excellent axial ratio and tight Phase Centre Variation (PCV) for enhanced performance.
Advanced Antenna Design:
- Precision-tuned, circular, dual-feed stacked patch element
- Hybrid signal combiner
- Wide-band Low Noise Amplifier (LNA)
- Band-split filtering and amplification for each frequency
- Recombined output for optimal signal clarity
Robust Interference Protection:
Integrated LNA pre-filter shields against high-level sub-harmonic interference (e.g., LTE) and nearby signals (e.g., WiFi).
Custom Tuning Services
Calian offers custom tuning to optimize the TW1825 for your specific OEM installation environment, ensuring peak performance in any application.
| Antenna Frequency | Dual Band GNSS |
| Mount | OEM / Embedded |
| Brand | Calian |
| Description | Part-Number |
|---|---|
| TW1825 | 33-1825-xx-yyyy |