Description
TW1889, embedded L1/L2 GNSS antenna with Prefilter. Employing Tallysman‘s Accutenna® technology covering GPS / L1 / L2, GLONASS G1 / G2 / G3, Galileo E1 / E5b, BeiDou B1 / B2 and QZSS L1 / L2 as well as SBAS (WAAS / EGNOS / GAGAN / MSAS).
TW1889, embedded L1/L2 GNSS antenna 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
Tallysman TW1889 Benefits from:
Lightweight (37g)
Ideal for L1 / L2 RTK survey systems
Great multi-path rejection
Increased system accuracy
Excellent signal-to-noise ratio
IP67, REACH and RoHS compliant
Details
TW1889 features a precision tuned, circular dual feed, stacked patch element. 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.
TW1889, Ideal for dual frequency positioning where minimizing weight is important, the 37-gram TW1889 provides excellent axial ratio and tight Phase Centre Variation (PCV).
Also included with the TW1889 is an LNA pre-filter as a result it provides enhanced protection against high level sub-harmonic signals like LTE and near frequency signals such as WiFi.
Tallysman offers custom tuning services to optimize the performance of the TW1889 for any OEM installation environment.
