33-3440-01-01

A Tallysman Accutenna® TW3440/TW3442 GPS/GLONASS 40dB Timing Antenna The TW3440/TW3442 employs Tallysman’s unique Accutenna technology, covering the GPS L1, GLONASS L1, and SBAS (WAAS, EGNOS & MSAS) frequency bands (1574 to 1606 MHz). They are especially designed for timing, mobile, precision and military applications. They provide truly circular response over the antenna’s entire bandwidth thereby producing superior multipath signal rejection. The TW3440/TW3442 each feature a highly circular dual-feed wideband patch element, with a three stage Low Noise Amplifier. This configuration provides excellent axial ratio that is constant across the full frequency band. An optional tight pre-filter is available with part number TW3442 to protect against saturation by high level sub-harmonics and L-Band signals. The TW3440/TW3442 is housed in a permanent mount industrial-grade weatherproof enclosure, and is available with a wide variety of connectors. The antenna is available with either a flat or a conical radome. Conical radomes are recommended for permanent locations to ward off birds and shed ice / snow. Shown with low profile radome, conical radome also available Applications      GPS / GLONASS Long cable Mobile/fixed Installations High Accuracy & Mission Critical Global Positioning Precision Agriculture, Mining & Construction Military & Security Law Enforcement & Public Safety Features Benefits                 Great axial ratio: 1 dB typ. High gain LNA: 40 dB min. Low noise LNA: 1dB/3.5dB typ TW3440/TW3442 Available sharp pre-filter (TW3442) Low current: 19 mA typ. Wide supply voltage: 2.5 to 16 VDC IP67 weather proof housing Available conical radome (Timing Apps) Excellent circular polarisation Long Cable Runs Excellent signal to noise ratio Excellent multipath rejection Exceptional out-of-band rejection (TW3442) Increased system accuracy Ideal for harsh environments RoHS and REACH compliant TW3440/TW3442 GPS/GLONASS 40dB Timing Antenna Specifications Vcc = 3V, over full bandwidth, T=25°C Antenna Architecture 1 dB Bandwidth Antenna Gain (with 100mm ground plane) Axial Ratio (over full bandwidth) Dual, Quadrature Feeds 32 MHz 4.25 dBic 1 dB typ., 3 dB max. Electrical Architecture TW3440: One LNA per feed ->Combiner ->SAW -> 2-Stage LNA TW3442: (SAW-> LNA) per feed ->Combiner -> SAW -> 2 Stage LNA, Filtered LNA Frequency Bandwidth Polarization LNA Gain1575.42 to 1606 MHz Gain flatness Group Delay (TW3442 w/o cable) Out-of-Band Rejection 32 dB (TW3440) >50dB (TW3442) >25 dB >50dB >35 dB >70dB