TW3320/TW3322 Wideband GPS/GLONASS Antenna
The TW3320/TW3322 is a high performance GNSS antenna covering the GPS L1, GLONASS G1 and SBAS (WAAS, EGNOS & MSAS) frequency band (1575 to 1606 MHz). It features a patch element with 40% wider bandwidth than hitherto available in this format. Unlike its competitors, both GPS-L1 and GLONASS signals are included in the 1dB received power bandwidth.
The TW3320/TW3322 has a two stage Low Noise Amplifier with a mid-section SAW. An optional tight pre-filter is available with part number TW3322 to protect against saturation by high level sub-harmonics and L-Band signals.
The TW3320/TW3322 has a 19mm (3/4 Inch) though-hole mount white metal base, specifically designed for mobile installations, with an industrial-grade, IP67 compliant 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).
| Applications |
Features |
Benefits |
- Cost Sensitive Mission Critical Positioning
- Military & Security
- Fleet Management & Asset Tracking
|
- Low noise LNA: 1 dB typical (TW3320)
- High rejection mid-section SAW filter
- Available Pre-filter (TW3322)
- High gain: 28 dB typ.
- Wide voltage input range: 2.5 to 16 VDC
- IP67 weather proof housing
- Low Power: 9mA typ. at 2.3Vcc min.
|
- Bandwidth fully Includes GPS-L1 & GLONASS
- Excellent multipath rejection
- Increased system accuracy
- Excellent signal to noise ratio
- Great out of band signal rejection
- Ideal for harsh environments
- RoHS compliant
|
Specifications
Vcc = 3V, over full bandwidth, T=25°C
| Antenna |
|
| Architecture |
Wideband Single Feed Patch |
| 1 dB Bandwidth |
31 MHz |
| 10dB Return Loss Bandwidth |
45 MHz |
| Antenna Gain (with 100mm ground plane) |
4.5 dBic |
| Axial Ratio |
<4dB @ 1590MHz, 8 dB typical at band edges |
| Electrical |
|
| Architecture |
LNA stage 1 -> SAW filter-> LNA stage 2 (TW3320)
SAW Prefilter ->LNA stage 1 -> SAW filter-> LNA stage 2 (TW3322) |
| Filtered LNA Frequency Bandwidth |
1574 to 1606 MHz |
| Polarization |
RHCP |
| Gain (1575.42 to 1606 MHz) |
28dB min., TW3320
26dB, TW3322 |
| Gain flatness |
+/- 2 dB, 1575 to 1605 MHz |
Out-of-Band Rejection
<1500 MHz
<1550 MHz
>1640 MHz |
>35 dB
>25 dB
>35 dB |
| VSWR (at LNA input) |
<1.5:1 |
| Noise Figure |
1 dB typ.(TW3400) 2.5 dB typ (TW3402) |
| Supply Voltage Range (over coaxial cable) |
+2.5 to 16 VDC nominal (12VDC recommended maximum) |
| Supply Current |
15 mA max. at 85C |
| ESD Circuit Protection |
15 KV air discharge |
| Mechanicals & Environmental |
|
| Mechanical Size |
66.5 mm dia. x 21 mm H |
| Connectors |
TNC Jack (female) |
| Cable (Option) |
Custom flying cable assembly available |
| Operating Temp. Range |
-40 to +85 °C |
| Enclosure |
Radome: ASA Plastic, Base: Zamak White Metal |
| Weight |
150 g |
| Attachment Method |
Fixed-Mount |
| Environmental |
IP67 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 |
| Warranty |
One year, parts and labour |
