GNSS Helix Antenna

Helix Antenna B37B1GGB

This type of gnss antenna is a three-system seven-band external antenna that covers GPS L1/L2, BDS B1/B2/B3, and GLONASS L1/L2, which meets the current multi-system compatibility and high Demand for precision micro-deformation measurement.

Category:

Description

  • The B37B1GGB antenna design adopts a quadrifilar helix structure, the B37A2GGB, and B37A3GGB antennas adopt a multi-feed point design and a completely symmetrical antenna structure, they are with a relatively stable phase center, reducing the influence of the antenna on measurement errors.
  • The antenna gain is high, the patterned beam is wide, and the reception effect of low-elevation signals is good, ensuring that the satellite can be received normally on some severely obstructed occasions.
  • The B37B1GGB antenna is equipped with a high out-of-band suppression low-noise amplifier circuit, the B37A2GGB antenna’s low-noise amplifier adopts a front-filtering scheme, the B37A3GGB antenna is equipped with an anti-multipath choke plate and has an anti-surge design, the designs of these antennas can effectively suppress strong out-of-band interference signals and ensure antenna reliability.
  • The B37B1GGB antenna is small in size, lightweight, and has low power consumption, which can effectively reduce equipment load and extend battery life
  • The B37A2GGB antenna’s appearance has the characteristics of small, lightweight, and low wind resistance, with an IP67 waterproof rating design, and the shell can effectively resist ultraviolet radiation.
  • The B37A3GGB antenna adopts a metal base and anti-ultraviolet upper cover design, which is both beautiful and ensures that the antenna shell does not change color when used outdoors for a long time. It has an IP67 waterproof design.

    • Application

  • The B37B1GGB antenna is widely used in various industrial-grade UAVs, such as UAV aerial survey, UAV plant protection, UAV line inspection, UAV security, and various handheld terminals such as tablets and walkie-talkies.
  • The B37A2GGB and B37A3GGB antennas are mainly used on some occasions that have extremely high requirements for measurement accuracy.
         The B37A2GGB antenna’s light and compact appearance with low wind resistance makes it especially suitable for positioning and speed measurement of high dynamic carriers and can be widely used in navigation scheduling, tracking monitoring, positioning speed measurement, and other fields.
         The B37A3GGB antenna can be widely used in surveying and mapping, deformation monitoring, precision positioning, mobile mapping, engineering machinery control and precision agriculture, and other fields.

    • B37B1GGB Dimension

    B37B1GGB gnss antenna dimension

    B37A2GGB Dimension

    B37A2GGB gnss antenna dimension

    B37A3GGB Dimension

    B37A3GGB gnss antenna dimension

    Additional information

    Antenna type

    B37B1GGB: Three-system Seven-band Quadrifilar Helix Antenna
    B37A2GGB: Three-system Seven-band Light Aviation Antenna
    B37A3GGB: Three-system Seven-band Car suction cup antenna
    Frequency

    GPS L1/L2
    BDS B1/B2/B3
    GLONASS L1/L2
    Polarization

    Right-handed circular polarization
    Gain

    B37B1GGB: Elevation 90° ≥ 2dBi
    B37A2GGB / B37A3GGB: Elevation 90° ≥ 5dBi
    Axle Ratio

    Elevation 90° ≤ 3dB
    Front-to-back ratio

    B37A2GGB: Elevation 90° ≥ 15dBi
    B37A3GGB: Elevation 90° ≥ 18dBi
    Phase center error

    B37A3GGB: ±2mm
    LNA Gain

    B37B1GGB / B37A2GGB: 36 ± 2dB
    B37A3GGB: 40 ± 2dB
    VSWR

    ＜ 2.0
    Noise Coefficient

    ＜2.0
    Operating Voltage

    3.3～18VDC
    Operating Current

    B37B1GGB:＜35mA
    B37A2GGB / B37A3GGB:＜40mA
    Input Resistance

    50ohm
    Antenna Size

    B37B1GGB: Φ28*58.5mm
    B37A2GGB: Φ90*28.9mm
    B37A3GGB: Φ90*35.1mm
    Output Connector

    B37B1GGB: SMA-J
    B37A2GGB / B37A3GGB: TNC-K
    Weight

    B37B1GGB: ≤ 17g
    B37A2GGB: ≤ 250g
    B37A3GGB: ≤ 200g
    Waterproof

    IP67
    Working Relative Humidity

    95%
    Working Temp.

    -40°C～+75°C
    Storage Temp.

    -55°C～+85°C

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