產品明細

TW3742 AJ

Accutenna®抗干擾單頻GNSS天線

    產品簡述
    ♦ Accutenna®技術
    ♦ 極佳的軸比（典型值 2.0 dB）
    ♦ 低雜訊放大器雜訊（典型值 3.0 dB）
    ♦ 高抑制比 SAW 濾波器
    ♦ 高增益低雜訊放大器（典型值 40 dB）
    ♦ 低電流（典型值 19 mA）
    ♦ 寬電壓輸入範圍（2.5至12VDC）
    ♦ ESD電路保護（15 kV）
    ♦ IP67 防風雨外殼
    ♦ 符合 RoHS 和 REACH 標準

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      產品詳細介紹Product Introduction

      TW3742AJ Accutenna®Anti-Jam Single-Band GNSS Antenna

       

      The TW3742AJ is a precision high-gain GNSS antenna built with Calian's unique Accutenna® technology, providing single-band GPS/QZSS-L1, GLONASS-G1, Galileo-E1, and BeiDou-B1 coverage, including the satellite-based augmentation system (SBAS) available in the region of operation [WAAS (North America), EGNOS (Europe), MSAS (Japan), or GAGAN (India)].

      The Tallysman anti-jam feature modifies the radiation pattern of the GNSS antenna such that it is “deaf” to signals arriving from 10 ° below and 15 ° above the horizon while slightly increasing the gain of the antenna at zenith. Since jamming signals typically originate at low elevations, the TW3742AJ antenna mitigates signals below 15 °.

      Calian's patented Accutenna® technology enables the TW3742AJ antenna to provide a truly circular right-hand polarized signal through the entire bandwidth, thereby enabling superior multipath signal rejection and out-of-band signal rejection. This feature makes the TW3742AJ ideal for professional precision timing and positioning applications.

      The TW3742AJ features a precision-tuned, dual-feed patch element. The signals from the two orthogonal feeds are combined in a hybrid combiner, amplified in a wideband LNA, then band-split for narrow filtering and further amplified before recombination at the output. The antenna also has a strong pre-filter to mitigate inter-modulated signal interference from LTE and other cellular bands. The TW3742AJ offers an excellent axial ratio and a tightly grouped phase centre variation.

      The TW3742AJ is housed in a permanent-mount metal base with two nickelcoated nuts and an IP67 weather-proof enclosure. Two mounting options are available: an L-bracket (P/N 23-0040-0); or a pipe mount (P/N 23-0065-0).
       

      Features:
      • Accutenna® technology
      • Great axial ratio (2.0 dB typ.)
      • Low LNA noise (3.0 dB typ.)
      • High-rejection SAW filter
      • Low current (19 mA typ.)
      • Wide voltage input range (2.5 to 12 VDC)
      • ESD circuit protection (15 kV)
      • IP67 weather-proof housing
      • RoHS and REACH compliant
       

      Applications:

      • High-accuracy & mission-critical global positioning
      • Timing applications
      • Law enforcement and public safety
       

      Antenna:

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