TW1889 Accutenna® Pre-Filtered Embedded Dual-Band GNSS Antenna

Description

Ideal for dual-frequency positioning where minimizing weight is important, the 37-gram TW1889 provides excellent axial ratio and tight Phase Centre Variation (PCV).

The TW1889 features a precision-tuned, 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 TW1889 also includes an LNA pre-filter that provides enhanced protection against high-level sub-harmonic signals like LTE and near-frequency signals such as WiFi.

Calian offers custom tuning services to optimize the performance of the TW1889 for any OEM installation environment.

Features

• Very low Noise Preamp, 2.5 dB
• Axial ratio: < 2 dB typ.
• Tight Phase Center Variation
• LNA Gain 26 dB typ.
• Low current: 12 mA typ.
• ESD circuit protection: 15 KV
• Invariant performance from: +2.5 to 16 VDC

Benefits

• Lightweight (37g)
• Ideal for L1/L5 RTK survey systems
• Great multi-path rejection
• Increased system accuracy
• Excellent signal-to-noise ratio
• REACH and RoHS compliant

Technical Specifications

Noise Figure:	2.5 dB typ.
Size:	48 mm (dia.) x 13.1 mm (h.) [100 mm ground plane recommended]
Weight:	37 g
Mount:	Adhesive | 4 ⋅ M2 screws
Operating Temperature:	–40 °C to 85 °C

Ordering Information

Looking to order the Calian TW1889 GNSS antenna or have a question? Simply request a quote today and we’ll get back to you promptly.