Description

Ideal for train control sensors, autonomous vehicle tracking and guidance, precision agriculture, and other applications where precision matters, The TW3972 provides superior multipath signal rejection, a linear phase response, and tight phase centre variation (PCV).

The TW3972 meets all requirements of the Association of American Railroads’ Electronics Environmental Requirements and System Management Standard (S-9401.V1.0). In addition, it is has obtained the EN45545-2, EN50121, EN50155, and EN61373 European railway certifications.

The TW3972 features a precision-tuned, twin circular dual-feed, stacked patch element. The signals from the two orthogonal feeds are combined in a hybrid combiner, amplified in a wide-band LNA, then band-split for narrow filtering in each band and further amplified prior to 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 TW3972 offers excellent axial ratio and a tightly grouped phase center variation.

The TW3972 is housed in a through-hole mount, weather-proof enclosure for permanent installations. L Bracket or Pipe Mount (part numbers 23-0040-0, 23-0065-0 respectively) are available for non-rooftop installation. A 100 mm ground plane is recommended for non-roof-top installations.

Features

• Very low noise preamp (< 2.5 dB typ.)
• Low axial ratio (< 2.0 dB typ.)
• Tight phase center variation
• High-gain LNA gain (37 dB typ.)
• Low current (24 mA typ.)
• ESD circuit protection (15 kV)
• Invariant performance from 2.5 to 16 VDC
• IP69K, REACH, RoHS, and S-9401.V1.0 compliant
• EN45545-2, EN50121, EN50155, and EN61373 compliant

Benefits

• Great multipath rejection
• Increased system accuracy
• Great signal-to-noise ratio