33-7872-07

## TW7872 

## Multi-Constellation Dual-Band Antenna 

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

The TW7872 is precision tuned duaL-Band, Accutenna® technology antenna for reception of GPS-L1/L2, GLONASSG1/G2, BeiDou B1, Galileo E1 and is especially designed for precision dual frequency positioning. The TW7872 provides superior multipath rejection and axial ratio, a linear phase response, and tight phase centre variation (PCV), while protecting against intermodulation and saturation caused by high-level cellular 700 MHz signals. 

This antenna is ideal for precision agriculture, autonomous vehicle tracking and guidance, and other applications where precision matters. The TW7872 features a precision tuned, twin circular dual-feed, stacked patch element. 

The signals from the two orthogonal feeds are combined in a hybrid combiner, pre-filtered to minimize interference from out-of-band signals such as Cellular LTE then amplified in a wide-Band LNA and band-split for additional filtering and amplification stages prior to recombination at the output. 

The TW7872 provides reception for signals in the bands 1213 MHz to 1261 MHz and 1557MHz to 1606MHz. It is housed in a magnetic mount, weatherproof enclosure. A 100 mm diamter ground plane is recommended for optimal antenna performance. This product is also available in an OEM format (TW3867 for 28 dB and TW3872E for 35 dB). 

## Applications 

- Precision GPS position 

- Dual Frequency RTK systems 

- Mission Critical GPS Timing 

- Safety & security 

## Features 

- Very low noise preamp: < 2.5 dB 

- Axial ratio: < 2.0 dB typ. 

- Tight phase centre variation 

- High-gain LNA: 32 dB typ. 

- Low current: 24 mA typ. 

## Benefits 

   - Ideal for dual-band RTK surveying systems 

   - Great multipath rejection 

   - Increased system accuracy 

   - Great signal-to-noise ratio 

   - IP67, REACH, and RoHS compliant 

- ESD circuit protection (15 kV) 

- Invariant performance from 2.5 to 16 VDC 

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 

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

## Multi-Constellation Dual-Band Antenna 

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

Antenna - Measured with a 100 mm ground plane Technology Dual-feed Stacked RHCP ceramic patch 

Gain Axial Ratio dBic typ. at Zenith dB at Zenith GNSS L1 4.5 ≤ 2 ~~ee~~ GPS / QZSS L2 3.8 ≤ 2 ~~ee~~ L5 - - ~~a a re~~ G1 4.0 ≤ 2 GLONASS G2 3.5 ≤ 2 ~~a ee~~ G3 - - ~~a ee~~ E1 4.0 ≤ 2 ~~a ee~~ E5A - - Galileo ~~a ee~~ E5B - - ~~ee~~ E6 ~~ee~~ - ~~ee~~ - ~~a aee eee~~ B1 4.0 ≤ 2 ~~a~~ B2b ~~ee~~ - ~~ee~~ - BeiDou ~~a~~ B2a ~~ee~~ - ~~ee~~ - ~~ee~~ B3 ~~ee~~ - ~~eee~~ - ~~ee~~ IRNSS / NavIC ~~a~~ L5 ~~ee~~ - - ~~eeee~~ L-Band Services (1525 MHz - 1559 MHz)QZSS ~~ee~~ L6 ~~eeee~~ -- ~~ee~~ -- Satellite Communications Iridium - - Globalstar - - ~~RR a ee~~ Other Axial Ratio at 10° - Efficiency - ~~a~~ PC Variation ± 10 mm ~~es~~ - - ~~a es ee~~ Mechanicals Size 69 mm (dia.) x 22 mm (h.) Weight 180 g Radome LEXAN™ EXL9330, Base: Zamac Metal Mount Magnetic Available Connectors See 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-810G Method 516.6 Salt Fog MIL-STD-810-F - Test Method 509.5 IP Rating IP67 Compliance IPC-A-610, FCC, RED / CE Mark, RoHS, REACH Warranty Parts and Labour 3-year standard warranty 

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

|Frequency Bandwith|Frequency Bandwith|Out of Band Rejection|
|---|---|---|
|Lower Band|1215 - 1254 MHz|< 1130 MHz > 40 dB<br>< 1190 MHz > 30 dB<br>> 1284 MHz > 32 dB|
|L-Band Corr.|-|< 1450 MHz > 40 dB<br>< 1520 MHz > 30 dB<br>> 1650 MHz > 35 dB|
|Upper Band|1559 - 1606 MHz||



Architecture Pre-filtered Gain 32 dB typ. 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 Supply Current 24 mA typ., 25 mA max. ESD Circuit Protection 15 kV air discharge P 1dB Output 11 dBm typ. Group Delay - PCO - 

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Please refer to our Ordering Guide to review available radomes and connectors at: https://www.tallysman.com/resource/tallysman-ordering-guide/ 

> © 2023 Calian Inc. 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.