產品明細

TW7872

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

      TW7872 Dual Band GNSS Antenna

      The TW7872 is precision tuned duaL-Band, Accutenna® technology antenna for reception of GPS-L1/L2, GLONASSG1/G2, BeiDou B1, Galileo E1 and is especially designed for precision dual frequency positioning. The TW7872 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 high-level cellular 700 MHz signals.

      This antenna is ideal for precision agriculture, autonomous vehicle tracking and guidance, and other applications where precision matters. The TW7872 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 wide-Band LNA and band-split for additional filtering and amplification stages prior to recombination at the output.

      The TW7872 provides reception for signals in the bands 1213 MHz to 1261 MHz and 1557MHz to 1606MHz. It is housed in a magnetic mount, weatherproof enclosure. A 100 mm diamter ground plane is recommended for optimal antenna performance. This product is also available in an OEM format (TW3867 for 28 dB and TW3872E for 35 dB).


      Coverage:

      • 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.
      • Law enforcement and public safety
      • 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
      • Law enforcement and public safety
      • Network timing & synchronization
       

      Antenna:- Measured with a 100 mm ground plane

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