Tallysman TW4421 Single-Band GNSS Antenna

Description

Overview

Ideal for high accuracy applications while providing high out of band signal rejection, the TW4421 GNSS antenna is the smallest dual feed, high performance antenna available, providing truly circular response over its entire bandwidth thereby producing superior multi-path signal rejection.

The TW4421 features a novel 25mm dual feed wide band patch element that provides a more linear carrier phase response by virtue of the axial ratio that is greatly improved across the full frequency bandwidth.

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 TW4421 is housed in a compact IP67 compliant enclosure that can be surface mounted via magnet, screws or adhesive material.

If you need enhanced protection against high level sub-harmonic signals like LTE and near frequency signals such as WiFi, the alternative TW4422 provides these additional benefits with an LNA pre-filter.

Applications

• Cost Sensitive Mission Critical Positioning
• Military & Security
• Covert surveillance
• Fleet Management & Asset Tracking

Features

• Dual-feed patch element
• Axial ratio: 2.5 dB max.
• Low noise LNA: 1 dB
• High rejection mid-section SAW filter
• High gain: 28 dB typ.
• Wide voltage input range: 2.5 to 16 VDC
• IP67 compliant weatherproof housing
• Low Current: 9mA typ.

Benefits

• 1 dB Bandwidth
• Greatly enhanced multi-path rejection
• Improved GNSS reliability
• Excellent signal to noise ratio
• RoHS compliant
• Ideal for harsh environments
• Excellent out of band signal rejection

Warranty

Calian GNSS (formerly Tallysman Wireless) offers a warranty of 1-3 years on all of it’s products. The warranty ensures that the products are free from defects of materials or workmanship and conform to Calian’s specifications under normal use. Embedded antennas are covered by a one (1) year standard warranty. All housed antennas and accessories (inline amplifiers, splitters, and bias tees) manufactured after January 1, 2020 are covered by a three-year warranty. The warranty is covered in more detail on the Calian GNSS Warranty page.

Why Buy from Us?

In business since 2004, Canal Geomatics is an authorized dealer for Calian GNSS and has established itself as an industry-leading distributor of high-precision positioning products in North America. Our mission is to find the best solution for each unique application and extend premium support to ensure the long-term success of our customers. We offer both volume and reseller discounts for the majority of our product lines.

Ordering

The TW4421 single band GNSS antenna is available through Canal Geomatics. If you would like more information about this product, please feel free to get in touch with us by completing the Request Pricing form.