產品明細

TW3872

雙頻段 GNSS 天線（預濾波）

    產品簡述
    ♦ 低雜訊放大器 (LNA)：< 2 dB
    ♦ 軸比：< 2 dB 典型值
    ♦ 緊密相位中心變化（PCV）
    ♦ 高增益：典型值 35 dB
    ♦ 低電流：典型值 24 mA
    ♦ 在+2.5至16VDC範圍內性能保持不變

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      產品詳細介紹Product Introduction

      TW3872 Dual-Band Band GNSS Antenna Pre-filtered

       

      The TW3872 employs Calian's patented Accutenna® technology providing dual-band GPS-L1/L2, GLONASS-G1/G2 + BeiDou B1 + Galileo E1 coverage and is especially designed for precision dual frequency positioning.  

      The TW3872 features a precision tuned, circular dual-feed, stacked 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 in each band and further amplified prior to recombination at the output.

      The TW3872 offers excellent axial ratio and a tightly grouped phase centre variation.

      The TW3872 covers GPS L2 (1227.6MHz), GLONASS G2 (1248MHz centre), GPS-L1/WAAS/EGNOS/MSAS (1575.42 MHz), GLONASS-G1 (1602 MHz, centre), BeiDou B1 and Galileo E1. (1561 and 1589 MHz). The TW3872 has a pre-filter which increases the antenna’s immunity to high-amplitude interfering signals, such as LTE and other cellular signals.

      The TW3872 is housed in a through-hole mount, weatherproof enclosure for permanent installations. L-Bracket or Pipe Mount (part numbers 23-0040-0, 23-0065-0 respectively) are available for non-rooftop installation. A 100 mm ground plane is recommended for optimal performance

      This product is also available in an OEM formats (TW3867, and TW3872E). 
       

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