33-3872XF-14-01

## TW3872XF 

## Multi-Constellation Dual-Band Antenna 

> **Frequency Coverage:** GPS L1, L2 | GALILEO E1 | BEIDOU B1 | GLONASS G1, G2 

The TW3872XF is a precision-tuned dual-band Accutenna® technology antenna providing coverage for GPS/QZSS-L1/L2, GLONASS-G1/G2, Galileo-E1, and BeiDou-B1, including the satellite-based augmentation system (SBAS) available in the region of operation [WAAS (North America), EGNOS (Europe), MSAS (Japan), or GAGAN (India)]. 

The TW3872XF features an 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 and harmonic frequencies of new LTE bands [e.g. 800MHz x 2 = 1600MHz (GLONASS-G1)] can affect GNSS antennas and receivers. 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 TW3872XF provides superior multipath signal rejection, a linear phase response, and tight phase centre variation (PCV). 

The TW3872XF 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 TW3872XF is housed in a through-hole mount, weatherproof enclosure for permanent installations. L-bracket (PN #23-0040-0) or pipe mount (PN #230065-0) are available for non-rooftop installation. A 100 mm ground plane is provided for optimal performance. 

## 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 

## 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 

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 

**Frequency Coverage:** GPS L1, L2 | GALILEO E1 | BEIDOU B1 | GLONASS G1, G2 

## Multi-Constellation Dual-Band Antenna 

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<br>Axial Ratio|
|---|---|
||dBic typ. at Zenith<br>dB at Zenith|
|GNSS<br>GPS / QZSS<br>GLONASS|L1<br>L2<br>L5<br>G1<br>G2<br>G3<br>-<br>-<br>-<br>-<br>4.0<br>< 1.0<br>2.5<br>< 1.5<br>4.0<br>< 1.0<br>2.5<br>< 1.5<br>~~es~~<br>~~es~~<br>~~esee~~<br>~~es~~<br>~~es~~<br>~~ee~~<br>~~esee~~<br>~~es~~|
|E1<br>E5A<br>E5B<br>E6<br>B1<br>B2b<br>B2a<br>B3<br>L5<br>< 1.0<br>-<br>-<br>-<br>-<br>BeiDou<br>4.0<br>< 1.0<br>-<br>IRNSS / NavIC<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>-<br>Galileo<br>4.0<br>-<br>~~es~~<br>~~ee~~<br>~~esee~~<br>~~es~~<br>~~es~~<br>~~ee~~<br>~~es~~<br>~~ee~~<br>~~esee~~<br>~~es~~<br>~~a~~||
|L6<br>QZSS<br>-<br>-<br>~~a~~||
|L-Band Services (1539 MHz - 1559 MHz)<br>-<br>-<br>~~a~~||
|Iridium<br>-<br>-<br>Satellite Communications<br>~~es~~||
|Globalstar|-<br>-|
|Other||
|-<br>Efficiency<br>Axial Ratio at 10°<br>-<br>~~a~~||
|PCV Φ > 15°<br>± 10 mm<br>PCO<br>~~a~~||
|||
|**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<br>Please refer to ordering guide||
|**Environmental**||
|Operating Temperature<br>-40 °C to +85 °C||
|Storage Temperature<br>-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|Frequency Bandwith|Out of Band Rejection|
|---|---|---|---|
||||≥ 90 dB @ ≤ 1100 MHz|
|Lower Band|1215 - 1254 MHz||≥ 90 dB @ ≤ 1125 MHz|
||||≥ 80 dB @ ≥ 1350 MHz|
|L-Band Corr.||-|≥ 70 dB @ ≤ 1500 MHz|
||||≥ 50 dB @ ≤ 1525 MHz|
||||≥ 40 dB @ ≤ 1536 MHz|
|Upper Band|1559 - 1606 MHz||≥ 95 dB @ = 1650 MHz|
||||≥ 75 dB @ ≥ 1660 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** 

33-3872XF-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: