The TW3370/TW3372 is a high Gain (40dB) GNSS antenna covering the GPS L1, GLONASS L1 and SBAS (WAAS, EGNOS & MSAS) frequency band (1575 to 1606 MHz). It features a patch element with 40% wider bandwidth than previously available in this format. Unlike its competitors, both GPS-L1 and GLONASS signals are included in the 1dB received power bandwidth. The TW3370/TW3372 has a three stage Low Noise Amplifier with a mid-section SAW. A tight pre-filter is available with the TW3372 to protect against saturation by high level sub-harmonics and L-Band signals making it particularly suitable for timing applications. The TW3370/TW3372 has a 19mm (3/4 Inch) though hole, permanent mount white-metal base, with an industrial-grade, IP67 compliant conical radome. Two options for pole mounting are available an L-bracket (P/N#23-0040-0) or a pipe mount (P/N#23-0065-0).

Antenna Architecture Wideband Single Feed Patch 1 dB Bandwidth 31 MHz 10dB Return Loss Bandwidth 45MHz Antenna Gain (with 100mm ground plane) 4.5 dBic Axial Ratio <4dB @ 1590MHz, 8 dB typical at band-edges Electrical Architecture TW3370 LNA stage 1 -> SAW filter-> LNA stage 2 TW3372 SAW Pre-filter ->LNA stage 1 -> SAW filter-> LNA stage 2 Filtered LNA Frequency Bandwidth 1575 to 1606 MHz Polarization RHCP Gain 41 dB min., TW3370 40dB min., TW3372 Gain flatness +/- 2 dB, 1575 to 1606 MHz Out-of-Band Rejection <1500 MHz >32 dB (TW3370) >50dB (TW3372) <1550 MHz >25 dB >50dB >1640 MHz >35 dB >70dB VSWR (at LNA output) <1.5:1 Noise Figure 1dB typ. TW3370, 2.5 dB typ. TW3372 Supply Voltage Range (over coaxial cable) +2.5 to 16 VDC nominal (12VDC recommended maximum) Supply Current 20 mA max. at 85°C ESD Circuit Protection 15 KV air discharge Mechanicals & Environmental Mechanical Size 66.5 mm dia. x 21 mm H Operating Temperature Range -40 to +85 °C Enclosure Radome:EXL9330, Base: Zamak White Metal Weight 150 g Environmental IP67, CE, REACH, and RoHS compliant Shock Vertical axis: 50 G, other axes: 30 G Vibration 3 axis, sweep = 15 min, 10 to 200 Hz sweep: 3 G Salt Fog / Spray MIL-STD-810F Section 509.4 Ordering Information. TW3370 – GPS/GLONASS antenna 33-3370-xx-yy-zzzz TW3372 33-3