產品明細

TW7882

雙頻GNSS天線

    產品簡述
    ♦ 超低雜訊前置放大器：雜訊< 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

      TW7882 Dual Band GNSS Antenna


      The TW7882 employs Calian's patented Accutenna® technology providing dual-band GPS-L1/L2, GLONASS-G1/G2 + BeiDou B1/B2b + Galileo E1/E5b coverage and is especially designed for precision dual frequency positioning.

      The TW7882 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 TW7882 has a pre-filter which increases the antenna’s immunity to high amplitude signals, such as LTW and other cellular signals. The TW7882 offers excellent axial ratio and a tightly grouped phase centre variation.

      The TW7882 covers GPS L2 (1227.6MHz), GLONASS G2 (1248MHz centre), GPS-L1/WAAS/EGNOS/MSAS (1575.42 MHz), GLONASS-G1 (1602 MHz, centre), BeiDou B1/B2b (1575 and 1207 MHz) and Galileo E1 (1561 and 1589 MHz).

      The TW7882 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 non-roof-top installations. A 100 mm diamter ground plane is recommended for optimal antenna performance. This product is also available in an OEM format (TW3887).      .

       

      • 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
      • Network timing & synchronization
       

      Antenna:- Measured with a 100 mm ground plane

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