產品明細

TW1825

預濾波嵌入式雙頻螺旋天線

    產品簡述
    ♦ 超低雜訊前置放大器：典型值 2.0 dB。
    ♦ 軸比：<2 dB（典型值）
    ♦ 緊密相位中心變化。
    ♦ LNA增益26 dB（典型值）
    ♦ 低電流：典型值 12 mA
    ♦ 靜電放電電路保護：15千伏

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      詢價

      產品詳細介紹Product Introduction

      TW1825 Embedded Dual-Band GNSS Antenna


      The TW1825 employs Calian's patented Accutenna® technology providing dual-band GPS-L1/L5, GLONASS-G1, Galileo E1/E5a, and BeiDou B1 coverage and is especially designed for precision dual frequency positioning where light weight is important.

      The TW1825 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 TW1825 offers excellent axial ratio and a tightly grouped phase centre variation.

      The TW1825 covers GPS L5/Galileo E5a (1175.45 MHz), GPSL1/WAAS/EGNOS/MSAS (1575.42 MHz), GLONASS-G1 (1602 MHz, centre), Galileo E1 (1575.42 MHz, centre), and BeiDou B1 (1575.42 MHz, centre).

      The TW1825 has a pre-filter which increases the antenna’s immunity to high-amplitude interfering signals, such as LTE and other cellular signals.
       

      • Autonomous uncrewed aerial vehicles (UAVs)
      • Precision GNSS 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


      Upper BandLower Band
      Frequency Bandwith
      1559 - 1606 MHz1164 - 1189 MHz
      Out-of-band Rejection
      > 35 dB @ < 1450 MHz
      > 30 dB @ < 1520 MHz
      > 35 dB @ > 1650 MHz      		> 40 dB @ < 1170 MHz
      > 30 dB @ < 1190 MHz
      > 32 dB @ > 1290 MHz
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