產品明細

TW7875

雙頻GNSS天線

    產品簡述
    ♦ 超低雜訊前置放大器：< 2.5 dB
    ♦ 軸比：< 2dB（典型值）
    ♦ 緊密相位中心變化
    ♦ LNA增益典型值 32 dB
    ♦ 低電流：典型值 24 mA。
    ♦ 靜電放電電路保護：15千伏
    ♦ 性能穩定，電壓範圍：+2.5 至 16 VDC

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      產品詳細介紹Product Introduction

      TW7875 Dual Band GNSS Antenna


      The TW7875 is precision tuned duaL-Band, Accutenna® technology antenna for reception of GPS-L1/L5, GLONASS-G1, BeiDou B1, Galileo E1/E5a, NavIC L5 and is especially designed for precision dual frequency positioning. The TW7875 provides superior multipath rejection and axial ratio, a linear phase response, and tight phase centre variation (PCV), while protecting against intermodulation and saturation caused by highlevel cellular 700 MHz signals.

      This antenna is ideal for precision agriculture, autonomous vehicle tracking and guidance, and other applications where precision matters. The TW7875 features a precision tuned, twin circular dual-feed, stacked patch element. The signals from the two orthogonal feeds are combined in a hybrid combiner, pre-filtered to minimize interference from out-of-band signals such as Cellular LTE then amplified in a wideBand LNA and band-split for additional filtering and amplification stages prior to recombination at the output.

      The TW7875 provides reception for signals in the bands 1165 MHz to 1189 MHz and 1559MHz to1606 MHz.It is housed in a magnetic mount, weatherproof enclosure. A 100 mm diamter ground plane is recommended for optimal antenna performance.

       

      • Very low noise preamp: < 2.5 dB
      • Axial ratio: < 2.0 dB typ.
      • Tight phase centre variation
      • High-gain LNA: 32 dB typ.
      • Low current: 24 mA typ.
      • ESD circuit protection (15 kV)
      • Invariant performance from 2.5 to 16 VDC


      Applications:

      • Precision GPS position
      • Dual-frequency RTK receivers
      • Mission Critical GPS Timing
      • Safety & security
       

      Antenna:- Measured with a 100 mm ground plane

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