الوصف

~The TW***0 by Tallysman Wireless is a professional grade GNSS antenna covering the GPS L1, GLONASS L1 and SBAS (WAAS, EGNOS & MSAS) frequency band (***4 to ***6 MHz). It is especially designed for precision industrial, agricultural and military applications and offers excellent circular polarized signal reception, multipath rejection and out of band signal rejection.
The TW***0 features a dual-feed wideband patch element, with a two stage Low Noise Amplifier, comprised of one 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 TW***0 is housed in a compact, industrial-grade weather-proof, magnet mount enclosure, and comes with a bulkhead SMA female connector or with 5 metres of cable and a wide range of connector.
Applications
 High Accuracy & Mission Critical Global Positioning
 Precision Agriculture, Mining & Construction
 Military & Security
 Avionics
 Law Enforcement & Public Safety
 Fleet Management & Asset Tracking
 Features
 Great axial ratio: 1 typ., 3 dB max
 Low noise LNA: ≤1 dB
 High rejection SAW filter
 LNA gain: *5 dB typ.
 Low current: *2 mA typ.
 Wide voltage range: 2.5 to 5.5 VDC
 IP*7 weather proof housing
 Benefits
 Excellent multipath rejection
 Increased system accuracy
 Excellent signal to noise ratio
 Great out of band signal rejection
 Ideal for harsh environments
 RoHS compliant
Specifications
Antenna 
Architecture Dual, Quadrature Feeds
1 dB Bandwidth *0 MHz
Antenna Gain (**0mm ground plane) 4.*5 dBic
Axial Ratio (over full bandwidth) ≤3 dB
Electrical 
Architecture One LNA per feed line, mid section SAW filter
Filtered LNA Frequency Bandwidth ***4 to ***6 MHz
Polarization RHCP
LNA Gain *5 dB min., ***5.*2 to ***6 MHz
Gain Flatness +/- 2 dB, ***5 to ***5 MHz
Out-of-Band Rejection
<***0 MHz
<***0 MHz
>***0 MHz 
>*2 dB
>*5 dB
>*5 dB
VSWR (at LNA output) <1.5:1
Noise Figure ≤1 dB typ.
Supply Voltage Range (over coaxial cable) *2.5 to 5.5 VDC nominal
Supply Current *2 mA typ.
ESD Circuit Protection *5 KV air discharge
Mechanicals & Environmental 
Mechanical Size *7 mm dia. x *5 mm H
Connectors Bulkhead SMA Female, SMA Male on cable other connectors optional
Cable RG**4 / 5 metres, custom lengths optional
Operating Temp. Range **0 to **5 °C
Enclosure Radome: ASA Plastic, Base: Zamak White Metal
Weight **0 g
Attachment Method Magnet or permanent (pre-tapped 4 x ***2UNC)
Environmental IP*7 and RoHS compliant
Shock Vertical axis: *0 G, other axes: *0 G
Vibration 3 axis, sweep = *5 min, *0 to **0 Hz sweep: 3 G
Warranty One year, parts and labour