產品明細

AJ977XF

抗干擾三頻GNSS天線

    產品簡述
    ♦ 極佳的軸比（典型值 1.0 dB）
    ♦ 低雜訊放大器雜訊（典型值 2.5 dB）
    ♦ 高抑制比 XF 濾波
    ♦ 高增益低雜訊放大器（典型值 40 dB）
    ♦ 寬電壓輸入範圍（2.5至16VDC）
    ♦ ESD電路保護（15 kV）
    ♦ IP67 防風雨外殼
    ♦ 符合 RoHS 和 REACH 標準
    ♦ 在0-15°仰角範圍內衰減20dB

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      詢價

      產品詳細介紹Product Introduction

      AJ977XF Anti-Jamming Triple Band GNSS Antenna


      The AJ977XF supports GPS/QZSSL1/L2/L5, GLONASS-G1/G2/G3, Galileo-E1/E5a/E5b, BeiDou-B1/B2a/B2b, and NavIC-L5 frequency bands, including the satellite-based augmentation system (SBAS) available in the region of operation [WAAS (North America), EGNOS (Europe), MSAS (Japan), or GAGAN (India)].

      The AJ977XF Anti Jam antenna is designed to mitigate interference and jamming signals broadcast from near ground-based transmitters. The radiation pattern of the Low Elevation Angle Nulling Antenna (LEANA) provides 20 dB (typical) wideband suppression for all GNSS band signals received at an elevation angle of 0° through to approximately 15°. This level of attenuation was demonstrated to mitigate jamming signal broadcasts at an elevation angle of 10° such that the AJ977XF can be up to 10 times closer, compared to a standard HC977XF helical antenna, to the source of interference without being jammed. The combination of Calian's low elevation angle nulling radiation pattern and eXtended Filtering (deep filtering and high linearity) technologies provides a one-two punch to jamming and RF noise. At the same time the AJ977XF’s radiation pattern above 20° elevation angle provides excellent gain and a phase center that supports accurate and precise positioning.

      Calian's eXtended Filter (XF) antenna technology has been designed to mitigate out-of-band signals and prevent GNSS antenna saturation. In North America, Ligado signals at 1525 - 1536 MHz can especially impact GNSS antennas that support space-based L-band correction services (1539 - 1559 MHz). New LTE signals in Europe [Band 32 (1452 - 1496 MHz)] and Japan [Bands 11 and 21 (1476 – 1511 MHz)] have also been observed to interfere with GNSS signals. In addition, Inmarsat satellite communication (uplink: 1626.5 - 1660.5 MHz) can also affect GNSS signals. Calian's custom XF filtering mitigates all existing signals and new Ligado and LTE signals, enabling the antennas and attached GNSS receivers to perform optimally.

      The Tallysman AJ977XF antenna is ideal of all mission critical positioning, navigation and timing applications.

      Coverage:

      Applications:

      • Mission-critical global positioning
      • Timing applications
      • Law enforcement and public safety


      Antenna:

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