TW4020 Wideband GPS Antenna
The TW4020 is a commercial grade wideband
GNSS antenna covering the GPS L1, frequency
band. It features a small patch element with
40% wider bandwidth than typical GPS L1
antennas.
The TW4020 features a high performance
custom tuned ceramic patch element, 15 KV
ESD circuit protection, a high gain two-stage
low noise amplifier (LNA) with a mid-section
high rejection SAW filter. It covers the GPS L1
and SBAS (WAAS/EGNOS/MSAS) frequency
band (1572.5 to 1578 MHz), and it offers great
circular polarized signal reception.
Even with the wider bandwidth, the TW4020
antenna is among the smallest high
performance antenna available. It is housed in
a compact IP67 magnetic mount enclosure.
Applications
Cost Sensitive Positioning
Fleet Management & Asset Tracking
Covert surveillance
Features
40% wider bandwidth, small footprint
Axial ratio: 6 dB max (GPS )
Low noise LNA: 1 dB
High rejection SAW filter
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.
Benefits
Increased system accuracy
Excellent signal to noise ratio
RoHS compliant
Ideal for harsh environments
Excellent out of band signal rejection
TW4020 Wideband GPS Antenna
Specifications
Antenna
Architecture
1 dB Bandwidth
10dB Return Loss Bandwidth
Antenna Gain (with 100mm ground plane)
Axial Ratio over Bandwidth (over full bandwidth)
Wideband Single Feed Patch
31 MHz
45MHz
4.5 dBic
4dB @ Fcenter, 6 dB max
Electrical
Architecture
Polarization
Gain
Gain flatness
Out-of-Band Rejection
VSWR (at LNA output)
Noise Figure
Supply Voltage Range (over coaxial cable)
Supply Current
ESD Circuit Protection
LNA stage 1 -> SAW filter-> LNA stage 2
Filtered LNA Frequency Bandwidth 1565 to 1585 MHz
RHCP
28dB min., 1575.42 MHz
+/- 2 dB, 1575 to 1606 MHz
<1500 MHz
-45dB (typical)
<1550 MHz
-25dB (typical)
>1640 MHz
-40dB (typical)
<1.5:1
1 dB typ.
+2.5 to 16 VDC nominal (12VDC recommended maximum)
12 mA max.
15 KV air discharge
Mechanicals & Environmental
Mechanical Size
Cable
Operating Temp. Range
Enclosure
Weight
Attachment Method
Environmental
Shock
Vibration
38mm x 38mm dia. x 14.3mm H
RG174
40 to +85 °C
Radome and base: ASA plastic
73g ( enclosure 34gm, 3m cable 39gm)
Magnetic
IP67 and RoHS compliant
Vertical axis: 50 G, other axes: 30 G
3 axis, sweep = 15 min, 10 to 200 Hz sweep: 3 G
Ordering Information
Legacy Part Number:
TW4020 – Wideband GPS Antenna
32-4020-xx-yyyy
Connector: xx = 00 SMA male ,
01 = TNC male
02 = MCX male
03 = MMCX male 04 = SMB male
05 = MCX right angle male
06 = MMCX right angle male 07 = SMA female 08 = H.FL**
09 = U.FL
10 = SMA R/A**
11 = Reverse polarity SMA**
** Premiums apply. Please contact your Distributor
Cable length: yyyy = cable length in mm
* As a result of a growing product portfolio, Tallysman has rationalized its part number system. No changes have been made to the
mechanical or electrical properties of these products. Where administratively possible, please use the following Part Numbers.
TW4020 – Wideband GPS Antenna
33-4020-xx-yyyy
Please refer to the Ordering Guide
(http://www.tallysman.com/orderingguide.php)
for the current and complete list of available
radomes and connectors.
Tallysman Wireless Inc
106 Schneider Road, Unit 3
Ottawa ON K2K 1Y2 Canada
Tel 613 591 3131
Fax 613 591 3121
sales@tallysman.com
The information provided herein is intended as a guide only and is subject to change without notice. This document is not to be
regarded as a guarantee of performance. Tallysman Wireless Inc. hereby disclaims any or all warranties and liabilities of any kind.
© 2010 Tallysman Wireless Inc. All rights reserved.
Rev 2.1