TW1421 Accutenna® Embedded Single-Band GNSS Antenna

The TW1421 employ Calian's patented Accutenna® technology covering the GPS-L1, GLONASS-G1, and SBAS (WAAS, EGNOS & MSAS) frequency band (1575 to 1606 MHz). It provides truly circular response over its entire bandwidth thereby producing superior multipath signal rejection. It also offers high out-of-band signal rejection.

The antennas feature a novel 25 mm wideband patch element with dual-feeds that are summed in a 90° Hybrid and input to a two stage low-noise amplifier (LNA) with a mid-section SAW, and a second low noise gain stage. This configuration provides excellent axial ratio and cross-polarization rejection across the full frequency band.

The built-in 35 mm circular ground plane should ideally be augmented with a local system ground plane or reflecting surface (DC connection not required).

The height of the RF shield (can) will be selected based upon the connector type. Connectors which require RG174 cable will be used with the taller can. Connectors which require mico-coax cable will be used with the shorter can.

OEM antennas are easily detuned by the local environment. Calian offers custom tuning services for optimized integration into OEM end-user modules.

Coverage:

• Compact Dual-feed Patch Element
• Low noise figure, 1.5 dB typ.
• ≤ 3 dB Axial Ratio at zenith
• LNA gain (28 dB typ.)
• Wide Supply voltage, 2.5V to 16V
• ESD circuit protection (15 kV)
• Temperature Compensated Gain

Applications:

• High Accuracy GPS & GLONASS
• Precision agriculture, mining, and construction
• Avionics
• Law enforcement and public safety
• Fleet management and asset tracking

Antenna: - Measured with a 100 mm ground plane