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    Short Message Antenna

    TDXL-BLS4004 BDS short message combined antenna
    创始人2025-01-08

    TDXL-BLS4004 is a built-in antenna designed for receiving BDS B3I, B1I and S-band satellite signals, as well as transmitting BDS L-band signals. It is designed with a dual-layer integrated structure to achieve miniaturization, while maintains high gain and wide directional beam. It exhibits excellent high and low elevation performance, providing good resistance to extreme temperature fluctuation and corrosion, which can do outdoor work for a long time. The antenna is widely applied in ship-borne, vehicle-mounted, handset and other fields.

    1. The antenna part adopts symmetrical design to minimize the impact of the precision error and ensure the phase center stability.

    2. The unit features a dual-feed design, offering high gain, a wide directional beam, and excellent low-elevation signal reception, ensuring normal reception in special occasions where the signal is severely obscured.

    3. It is designed with an integrated structure to achieve miniaturization.

    4. The multi-feed structure ensures the antenna maintains excellent circular polarization and axial ratio characteristics.

    5.  Compact size and easy to integrate.


    Signal support

    BDS: B3I、B1I、L、S

    Output impedance

    50Ω

    Antenna performance

    B3I V.S.W.R.

    ≤2.0        

     (1268.52±2.046MHz)


    B3I polarization gain (RHCP)

    ≥-3.0dBi(elevation angle 30°)

    ≥2.0dBi(elevation angle 90°)


    B1I V.S.W.R.

    ≤2.0        

     (1561.098±2.046MHz)


    B1I polarization gain (RHCP)

    ≥-3.0dBi(elevation angle 30°)

    ≥3.0dBi(elevation angle 90°)

    L V.S.W.R.

    ≤2.0

     (1615.68±4.08MHz)

    L polarization gain (LHCP)

    ≥-3.0dBi(elevation angle 30°)

    ≥1.5dBi(elevation angle 70°)

    ≥3.0dBi(elevation angle 90°)

    S V.S.W.R.

    ≤2.0

     (2491.75±8.16MHz)

    S polarization gain (RHCP)

    ≥-3.0dBi(elevation angle 30°)

    ≥2.0dBi(elevation angle 70°)

    ≥4.5dBi(elevation angle 90°)


    Isolation

    ≤-15dB(B3I\B1I)

    ≤-15dB (B3I\L)

    ≤-15dB((B3I\S)

    ≤-15dB(B1I \ B3I)

    ≤-15dB (B1I \L)

    ≤-15dB(B1I \S)

    ≤-15dB(LB3I)

    ≤-15dB (L \B1I)

    ≤-15dB(L \S)

    ≤-15dB(S\ B3I)

    ≤-15dB (S \B1I)

    ≤-15dB(S \L)

    Axial ratio

    ≤3.0

    Antenna physical characteristics

    Dimension

    ≤φ45*11.5 mm

    Weight

    ≤120g

    Output interface

    MCX (customizable in form and length)

    Humidity

    95% non-condensing

    Storage temperature

    －55℃～＋70℃

    Operating temperature

    －45℃～＋65℃

    Related models：TDXL-BLS4004

    Dimension：
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