TW3865 Embedded GPS L1L2 GLONASS G1G2 Antenna
Note: The TW3965 has been discontinued. Please see the TW3867.
This dual band GPS L1 & L2 and GLONASS G1 & G2 antenna by Tallysman is designed for precision dual-frequency positioning. It is ideal for dual frequency Precise Point Positioning (PPP) systems.
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The TW3865 features a precision tuned, circular dual feed, stacked patch elements. Signals from two orthogonal feeds are combined in a hybrid combiner, amplified in a wide-band LNA, then band-split for narrow filtering in each band and further amplified prior to recombination at the output. This provides truly circular response over the entire bandwidth of the antenna.
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The TW3865 offers excellent axial ratio and a tightly grouped phase center. The TW3865 covers GPS L2 (1227.6MHz), GLONASS G2 (1248MHz centre), GPS L1/WAAS/EGNOS/MSAS (1575.42MHz) and GLONASS G1 (1602MHz, centre).
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The OEM TW3865 comes with a standard 60mm diameter circular ground plane and a coaxial cable terminated with a connector (right angle MCX is shown in the drawing). Mounting holes are provided for attachment to larger ground planes.
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Custom tuning and ground plane options may be available, depending on purchase level commitment.
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Applications
- Precision GPS Positioning
- Dual Frequency RTK Receivers
- Mission Critical GPS Timing
- Military & Security
- Fleet Management & Asset Tracking
Features
- Very low Noise Pream, <2dB.
- Axial ratio: <2dB typ.
- Tight Phase Center Variation
- LNA Gain: 28 dB typ.
- Low current: 25 mA typ.
- Wide supply voltage: 2.5 to 16 VDCÂ
Benefits
- Ideal for L1/L2 RTK surveying systems
- Ideal for L1/L2 Precise Point Positioning (PPP) systems
- Excellent multipath rejection
- Increased system accuracy
- Great signal to noise ratio
- IP67 and RoHS compliant
Available as an OEM / Embedded form as well.