TW3752AJ Accutenna®Anti-Jam Single-Band GNSS Antenna



GPS/QZSS-L1, GPS/QZSS, GLONASS-G1, Galileo-E1, BeiDou-B1



Amplifier Gain

50 dB typ.

Connector Options

Many Options, Please Inquire

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The TW3752AJ is a precision high-gain GNSS antenna built with Calian’s unique Accutenna® technology, providing single-band GPS/QZSS-L1, GLONASS-G1, Galileo-E1, and BeiDou-B1 coverage, including the satellite-based augmentation system (SBAS) available in the region of operation [WAAS (North America), EGNOS (Europe), MSAS (Japan), or GAGAN (India)].


  • Accutenna® technology
  • Great axial ratio (2.0 dB typ.)
  • Low LNA noise (3.0 dB typ.)
  • High-rejection SAW filter
  • High-gain LNA (50 dB typ.)
  • Low current (30 mA typ.)
  • Wide voltage input range (2.5 to 12 VDC)
  • ESD circuit protection (15 kV)
  • IP67 weather-proof housing
  • RoHS and REACH compliant


  • Operates under ground-based jamming
  • Circular polarization throughout the full bandwidth
  • Superior multipath signal rejection
  • Excellent signal-to-noise ratio
  • Great out-of-band signal rejection
  • Increased system accuracy
  • Ideal for harsh environments


The Calian anti-jam feature modifies the radiation pattern of the GNSS antenna such that it is “deaf” to signals arriving from 10 ° below and 15 ° above the horizon while slightly increasing the gain of the antenna at zenith. Since jamming signals typically originate at low elevations, the TW3752AJ antenna mitigates signals below 15 °.

Calian’s patented Accutenna® technology enables the TW3752AJ antenna to provide a truly circular right-hand polarized signal through the entire bandwidth, thereby enabling superior multipath signal rejection and out-of-band signal rejection. This feature makes the TW3742AJ ideal for professional precision timing and positioning applications.

The TW3752AJ features a precision-tuned, dual-feed 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 and further amplified before recombination at the output. The antenna also has a strong pre-filter to mitigate inter-modulated signal interference from LTE and other cellular bands. The TW3752AJ offers an excellent axial ratio and a tightly grouped phase centre variation.

The TW3752AJ is housed in a permanent-mount metal base with two nickel-coated nuts and an IP67 weather-proof enclosure. Two options for pole mounting are available: an L-bracket or a pipe mount.