33-4721NM-00-3000

A Tallysman Accutenna® TW4721/TW4722 Wideband Dual Feed GPS/GLONASS/BeiDou/Galileo Antenna The TW4721/TW4722 is a compact, wideband GNSS antenna that provides accurate reception for all upper L- band GPS, GLONASS, Beidou, and Galileo signals ( L1, G1, B1, B1 BOC, B1-2, E1) and associated augmentation signals (WAAS, EGNOS and MSAS SBAS). This antenna employs Tallysman’s patented Accutenna technology. The TW4721/TW4722 features a novel 25mm dual feed wideband patch element that, in sharp contrast with its competitors, provides a truly circularly polarized response, with a typical axial ratio of less than 2dB over the full bandwidth. This provides a more linear carrier phase response and substantially improved multipath rejection for higher precision applications. The TW4722 is the pre-filtered version of the TW1721. The pre-filter provides protection from near frequency or strong harmonic interfering signals. The TW4721/TW4722 is the smallest, lightest, wideband GNSS antenna available. It is housing in a compact IP67 magnetic or adhesive mount enclosure and is available with a wide range of connector options and custom coax cable lengths. The antenna can be ordered without the magnet. In such cases, the magnet is replaced with a plastic plug to provide a smooth under surface, with the option of ordering it with or without 1.1 mm double-sided VHB tape on the bottom. . Applications • • • • Cost Sensitive Mission Critical Positioning UAV / UAS Covert surveillance Fleet Management & Asset Tracking Features • • • • • • • • Dual feed patch element Axial ratio: 2 dB typ. Low noise LNA: 1 dB High rejection mid-section SAW filter High gain: 26 dB typ. Wide voltage input range: 1.8 to 16 VDC IP67 weather proof housing Low Power: 10mA typ. over supply range. Benefits • • • • • • Greatly enhanced multipath rejection improved GNSS reliability Excellent signal to noise ratio RoHS compliant Ideal for harsh environments Excellent out of band signal rejection TW4721/TW4722 Wideband Dual Feed GPS/GLONASS/BeiDou/Galileo Antenna Specifications At; Vcc = 3V, over full bandwidth, T=25°C Antenna Architecture 2 dB radiated power bandwidth (RHCP) Antenna Gain (with 100mm ground plane) Axial Ratio over full bandwidth Polarization Electrical Architecture Filtered LNA Frequency Bandwidth Gain (1559 MHz to 1606MHz) Gain flatness Out-of-Band Rejection VSWR (at LNA output) Noise Figure Supply Voltage Range (over coaxial cable) Supply Current ESD Circuit Protection Mechanicals & Environmental Mechanical Size Cable Operating Temp. Range Enclosure Weight Attachment Method Environmental Shock Vibration Warranty Wideband Dual Feed Patch Element 47 MHz 4.5 dBic @ 1582.5MHz Hybrid->LNA stage 1 -> SAW filter-> LNA stage 2 1559 to 1606 MHz TW4721: 25dB min, 29dB max TW4722: 23dB min, 27dB max +/- 2dB, 1559 MHz to 1606MHz TW4721 TW4722 40dB >57dB 45dB >62dB >1630MHz >45dB >50dB