33-3972XF-01-01

## TW3972XF 

## Multi-Constellation Triple-Band Antenna 

> **Frequency Coverage:** GPS L1, L2, L5 | GALILEO E1, E5a, E5b | BEIDOU B1, B2a, B2b | GLONASS G1, G2, G3 | NavIC L5 + L-Band 

The TW3972XF is a precision-tuned triple-band Accutenna® technology antenna providing coverage for triple-band GPS/QZSS-L1/L2/L5, GLONASS-G1/G2/G3, Galileo-E1/E5a/E5b, BeiDou-B1/B2b/B2a, NavIC-L5, including the satellite-based augmentation system (SBAS) available in the region of operation [WAAS (North America), EGNOS (Europe), MSAS (Japan), or GAGAN (India)], plus L-band Corrections. It is especially designed for precision triple-frequency positioning. 

The radio frequency spectrum has become more congested as new LTE bands are activated and their signals or harmonic frequencies [e.g. 800MHz x 2 = 1600MHz (GLONASS-G1)] 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 Corrections (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. 

Ideal for train control sensors, autonomous vehicle tracking and guidance, precision agriculture, and other applications where precision matters, The TW3972XF provides superior multipath signal rejection, a linear phase response, and tight phase centre variation (PCV). 

The TW3972XF 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 wideband 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 Ligado, LTE and other cellular bands. The TW3972XF offers excellent axial ratio and a tightly grouped phase centre variation. 

The TW3972XF meets all requirements of the Association of American Railroads (AAR)’s Electronics Environmental Requirements and System Management Standard (S9401.V1.0). In addition, it is also compliant with the EN45545-2, EN50121, EN50155, and EN61373 standards. 

The TW3972XF is housed in a through-hole mount, weatherproof enclosure for permanent installations. L-bracket (PN 23-0040-0) or pipe mount (PN 23-0065-0) are available. A 100mm ground plane is provided with the antenna, which ensures optimal performance. This antenna is also available in an OEM format: TW3967XF (28 dB) and TW3972EXF (37 dB). 

## Applications 

- Autonomous vehicle tracking and guidance 

- Positive Train Control (PTC) 

- Positive Train Location (PTL) 

- Precision GNSS position 

- Precision agriculture 

- Triple-frequency RTK and PPP receivers 

- Law enforcement and public safety 

- Automotive Positioning (Supports ADAS) 

Features 

- Very low noise preamp (< 2.5 dB typ.) 

- Low axial ratio (< 2.0 dB typ.) 

- Tight phase centre variation 

- High-gain LNA (37 dB typ.) 

- Low current (32 mA typ.) 

- ESD circuit protection (15 kV) 

- Invariant performance from 2.5 to 16 VDC 

## Benefits 

- Excellent interference mitigation 

- Excellent multipath rejection 

- Increased system accuracy 

- Excellent signal-to-noise ratio 

- CE RED, RoHS, and REACH compliant 

- EN45545-2, EN50121, EN50155, and EN61373 compliant 

- AAR Certified 

About Calian: With global headquarters and manufacturing in Ottawa, Canada, Calian is a leading manufacturer of highprecision antennas and components for Global Navigation Satellite System (GNSS) applications. Calian’s mission is to support the needs of a new generation of positioning systems by delivering unprecedented antenna precision at competitive prices. Learn more at www.calian.com/gnss 

Contact us: info.gnss@calian.com T: +1 613 591-3131 

Revision: 202410 

## Multi-Constellation Triple-Band Antenna 

**Frequency Coverage:** GPS L1, L2, L5 | GALILEO E1, E5a, E5b | BEIDOU B1, B2a, B2b | GLONASS G1, G2, G3 | NavIC L5 + L-Band 

Antenna - Measured with a 100 mm ground plane 

**Low Noise Amplifier (LNA)  - Measured at 3V and 25** ° **C** 

Technology Dual-feed Stacked RHCP ceramic patch 

Gain Axial Ratio dBic typ. at Zenith dB at Zenith GNSS L1 4.0 < 1.0 ~~es es~~ GPS / QZSS L2 4.0 < 1.0 ~~es ee~~ L5 -1.5 < 1.5 ~~es~~ G1 2.5 < 1.5 ~~ee ee~~ GLONASS G2 2.5 < 1.5 ~~es ee~~ G3 2.5 < 1.5 ~~es~~ E1 4.0 < 1.0 ~~ee ee~~ E5A -1.5 < 1.5 Galileo ~~es ee~~ E5B 2.5 < 1.5 ~~es ee~~ E6 - - ~~es~~ B1 4.0 < 1.0 ~~ee ee~~ B2b 2.5 < 1.5 BeiDou ~~es ee~~ B2a -1.5 < 1.5 ~~es ee~~ B3 - - ~~a~~ IRNSS / NavIC ~~es~~ L5 -1.5 < 1.5 ~~a~~ QZSS L6 - - ~~a~~ L-Band Services (1539 MHz - 1559 MHz) 3.5 < 1.0 Satellite Communications Iridium - - ~~es~~ Globalstar - - Other ~~a~~ Axial Ratio at 10° - Efficiency - ~~a~~ PCV Φ > 15° ± 10 mm PCO **Mechanicals** Size 66.5 mm (dia.) x 21 mm (h.) Weight 185 g Radome LEXAN™ EXL9330, Base: Zamac Metal Mount Through-hole (100 mm ground plane provided) Available Connectors Please refer to ordering guide **Environmental** Operating Temperature -40 °C to +85 °C Storage Temperature -55 °C to +95 °C Vibration MIL-STD-810-E - Test Method 514.5 Shock MIL-STD-810-G - Test Method 516.6 Salt Fog MIL-STD-810-F - Test Method 509.5 Other Tests Hail, Humidity, Dust, Rain, Sand, Solar IP Rating IP69K Compliance IPC-A-610, FCC, CE RED, RoHS, REACH **Warranty** Parts and Labour 3-year standard warranty 

|Frequency Bandwith|Frequency Bandwith||Out of Band Rejection|
|---|---|---|---|
||||≥ 70 dB @ ≤ 1050 MHz|
|Lower Band|1164 - 1254 MHz||≥ 65 dB @ ≤ 1125 MHz|
||||≥ 70 dB @ ≥ 1350 MHz|
|L-Band Corr.|1539 - 1559 MHz||≥ 65 dB @ ≤ 1500 MHz|
||||≥ 45 dB @ ≤ 1525 MHz|
||||≥ 05 dB @ ≤ 1536 MHz|
|Upper Band|1559 - 1606 MHz||≥ 30 dB @ ≥ 1626 MHz|
||||≥ 65 dB @ ≥ 1650 MHz|
|Architecture||eXtended Filtering|eXtended Filtering|
|Gain||37 dB typ., 35 dB min.||
|Noise Figure||2.5 dB typ.||
|VSWR||< 1.5:1 typ., 1.8:1 max.||
|Supply Voltage Range||2.5 to 16 VDC nominal, up to 50mV p-p ripple|2.5 to 16 VDC nominal, up to 50mV p-p ripple|
|Supply Current||32 mA typ.||
|ESD Circuit Protection||15 kV air discharge||
|P 1dB Output||11 dBm typ.||
|Group Delay||-||



**Mechanical Diagram - Units in 'mm' or 'inches' where specified** 

## **Ordering Information** 

33-3972XF-xx-yy-zzzz 

Part Number 

where     xx = connector type,     yy = shape and colour of radome,     and zzzz = cable length in mm 

Please refer to our Ordering Guide to review available radomes and connectors at: https://at.calian.com/gnss/information-support/part-number-ordering-guide/ 

© 2024 Calian Ltd. All rights reserved. Calian, the “Confidence. Engineered.” tag line and the Calain logo are trademarks or registered trademarks of Calian Inc. and/or its affiliates in Canada and certain other countries. All other trademarks mentioned in this document are the property of their respective owners. The information presented is subject to change without notice. Calian assumes no responsibility for any errors or omissions in this document. Calian hereby disclaims any or all warranties and liabilities of any kind. 

202410 

Revision: