SSL990XF Extended-Filter Housed Full-Band GNSS Low-Profile Antenna

The patent-pending SSL990XF low-profile cross dipole antenna with parasitic resonators is designed for precision positioning, covering the GPS/QZSS-L1/L2/L5, QZSS-L6, GLONASS-G1/G2/G3, Galileo-E1/E5a/E5b/E6, BeiDou-B1/B2/B2a/B3, 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)], as well as L-band correction services. 

The SSL990XF utilizes Calian's latest wideband antenna element design. The antenna element provides 67 MHz of signal bandwidth supporting the entire upper GNSS band and L-Band corrections (1539 - 1606 MHz) and 136 MHz of the lower band signal bandwidth (1164 - 1300 MHz). The SSL990XF provides superior Axial Ratio over the same wide bandwidth. The Tallysman SSL990XF has a high peak gain of 2.5 dBi and ≤ 1.5 dB (typical) axial ratio at zenith, enabling excellent multipath mitigation and a very precise phase centre.

The SSL990XF features Tallysmans eXtended Filter (XF) and industry-leading low current, low-noise amplifier (LNA) that includes an integrated low-loss pre-filter to prevent harmonic interference from high-amplitude signals, such as 700 MHz band LTE and other near-band cellular signals. As the radio frequency spectrum has become more congested, the signals or harmonic frequencies of new LTE bands [e.g. 800MHz x 2 = 1600MHz (GLONASSG1)] can affect GNSS antennas and receivers. In North America, planned 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. The new Tallysman XF antennas have been designed to mitigate out-of-band signals and prevent GNSS antenna saturation. 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 SSL990XF weights only 88 grams. It is housed in a weatherproof (IP67) enclosure and is mounted using screws through the aluminum ground plane. The aluminum also provides a slot base and a waterproofing O-ring. Two antenna cable connector options are available the first is a female SMA and the second is an MMCX. It is an ideal antenna for precision UAV and all applications where light weight and precision matters.

Coverage:

• Autonomous unmanned aerial vehicles (UAVs)
• Precision GNSS positioning
• Precision land survey positioning
• Mission-critical GNSS timing
• Marine and avionics systems

Antenna: (Measured with 100 mm ground plane)