33-1027-05-0150

TW1027 Low Current Embedded GPS Antenna The TW1027 is a very low power, compact GNSS antenna covering the GPS L1, frequency band. This antenna features an LNA with a nominal current consumption of just 2mA, with constant performance from 2.5V to 15V supply voltage, and includes protection against close proximity L-band transmitting antennas such as Iridium™ and Globalstar™ The TW1027 has amongst the lowest power consumption available, yet still provides 21dB nominal gain and an excellent Noise Figure. The TW1027 patch has 40% wider bandwidth for better axial ratio and has 15 KV ESD circuit protection. The LNA has a +/- 10MHz bandwidth that covers the full GPS L1 signal plus the SBAS (WAAS /EGNOS/MSAS) frequency band (1572.5 to 1578 MHz). TW1027 Dimensions (mm) The TW1027 is available with a variety of connectors and custom cable lengths. It is highly recommended to take advantage of Tallysman’s custom tuning service to ensure optimal performance of this antenna in your housing and with your ground plane. Applications • • • • Battery operated monitoring Covert Surveillance Fleet Management & Asset Tracking Satcom based AVL solutions Features • • • • • Nominal 2mA current draw Invariant response, 2.5 to 16 VDC Supply Low Noise 1.0dB Axial ratio: 4 dB max (GPS ) High gain: 24dB Benefits • • • • Longer battery life Excellent signal to noise ratio RoHS compliant Excellent out of band signal rejection TW1027 Low Current Embedded GPS Antenna Specifications Vcc = 3V, over full bandwidth, T=25°C Antenna Architecture 1 dB Bandwidth 10dB Return Loss Bandwidth Antenna Gain (with 100mm ground plane) Axial Ratio over Bandwidth Polarization Wideband Single Feed Patch 31 MHz 45MHz 4.5 dBic 4dB @ Fcenter RHCP Electrical Architecture Gain @ 1575.42 MHz Gain flatness Out-of-Band Rejection LNA1->SAW -> LNA2 24dB Typ, 21dB Min +/- 2 dB >32 dB >25 dB >35 dB