TW2405 Embedded GPS/GLONASS Antenna
The TW2405 by Tallysman Wireless is a professional grade embedded GNSS antenna covering the GPS L1, GLONASS L1, and SBAS (WAAS, EGNOS & MSAS) frequency bands (1574 to 1606 MHz). It is especially designed for precision industrial, agricultural and military OEM applications. The TW2405 offers a truly circular polarized response across the full bandwidth providing high multi-path signal rejection resulting in higher accuracy of position and time.
The TW2405 features a dual-feed wideband patch element, with a two stage Low Noise Amplifier, comprised of one input LNA per feed, a mid section SAW to filter the combined output, and a final output gain stage. This configuration provides excellent axial ratio that is constant across the full frequency band.
The TW2405 comes in a compact circular form factor with a built-in 50 mm diameter ground plane.
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Applications
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Features
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Benefits
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High Accuracy & Mission Critical GPS
Precision Agriculture, Mining & Construction
Military & Security
Avionics
Law Enforcement & Public Safety
Fleet Management & Asset Tracking
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Great axial ratio: <3 dB over full bandwidth
Tight Phase Centre Variation (PCV)
Low noise LNA: 1 dB
High rejection SAW filter
High gain: 28 dB typ.
Low current: 10 mA typ.
ESD circuit protection: 15 KV
Wide voltage input range: +2.5 to 16 VDC
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Excellent multipath signal rejection
Increased system accuracy
Excellent signal to noise ratio
Great out of band signal rejection
Compact form factor
RoHS compliant
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Specifications
Vcc = 3V, over full bandwidth, T=25°C
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Antenna
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Architecture
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Dual, Quadrature Feeds
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1 dB Bandwidth
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31 MHz
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Antenna Gain (100mm ground plane)
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4.25 dBic
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Axial Ratio (over full bandwidth)
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1dB typ. ≤3 dB max.
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Electrical
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Architecture
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One LNA per feed line, mid section SAW filter
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Filtered LNA Frequency Bandwidth
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1574 to 1606 MHz
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Polarization
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RHCP
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Gain
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28 dB min., 1575.42 to 1606 MHz
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Gain Flatness
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+/- 2 dB, 1575 to 1605 MHz
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Out-of-Band Rejection
<1500 MHz
<1550 MHz
>1640 MHz
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>32 dB
>25 dB
>35 dB
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VSWR (at LNA input)
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<1.5:1
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Noise Figure
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1 dB typ.
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Supply Voltage Range (over coaxial cable)
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+2.5 to 16 VDC nominal (12VDC recommended maximum)
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Supply Current
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10 mA typ.
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ESD Circuit Protection
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15 KV air discharge
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Mechanicals & Environmental
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Mechanical Size
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50 mm dia. x 7.8 mm H
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Cable
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RG174
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Operating Temp. Range
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-40 to +85 °C
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Weight
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35 g
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Attachment Method
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Adhesive or screw mount
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Environmental
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RoHS compliant
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Shock
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Vertical axis: 50 G, other axes: 30 G
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Vibration
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3 axis, sweep = 15 min, 10 to 200 Hz sweep: 3 G
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Warranty
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One year, parts and labour
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