Model 3126 Series Sleeve Dipole Antenna User Manual Model 3126-2450 Model 3126-3600
ETS-Lindgren Inc. reserves the right to make changes to any products herein to improve functioning or design. Although the information in this document has been carefully reviewed and is believed to be reliable, ETS-Lindgren does not assume any liability arising out of the application or use of any product or circuit described herein; nor does it convey any license under its patent rights nor the rights of others. All trademarks are the property of their respective owners.
Table of Contents Notes, Cautions, and Warnings ................................................ v 1.0 Introduction .......................................................................... 7 Standard Configuration ............................................................................... 9 Optional Items ............................................................................................ 9 CTIA Ripple Test Mounting Kit ............................................................
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Notes, Cautions, and Warnings Note: Denotes helpful information intended to provide tips for better use of the product. Caution: Denotes a hazard. Failure to follow instructions could result in minor personal injury and/or property damage. Included text gives proper procedures. Warning: Denotes a hazard. Failure to follow instructions could result in SEVERE personal injury and/or property damage. Included text gives proper procedures.
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1.0 Introduction The ETS-Lindgren Model 3126 Series Sleeve Dipole is designed as precision gain references for antenna range calibration and to meet the Cellular Telecommunication and Internet Association (CTIA) ±0.1 dB symmetry requirement for ripple test measurements. These antennas are truly omni-directional, having an electric dipole pattern approaching that of a half-wave resonant dipole with typical gains between 1.5 dB and 2.0 dB.
The higher-frequency antennas include a radome, and are characterized with the radome in place. The radome provides improved dielectric properties for superior high frequency performance. Do not remove the radome for any reason. Model 3126-3600 Each Model 3126 is designed with a VSWR less than 1.2:1 in at least a ±10 MHz band around the labeled center frequency. Gain values and ±0.
Standard Configuration Note: All Model 3126 dipole antennas are not listed in this manual; contact ETS-Lindgren Sales for a list of available Model 3126 dipole antennas. Model 3126 Sleeve Dipole Antenna A2LA accredited precision calibration and symmetry certification including signed Certificate of Calibration Optional Items Note: Contact ETS-Lindgren Sales for information on ordering optional items.
ETS-Lindgren Product Information Bulletin See the ETS-Lindgren Product Information Bulletin included with your shipment for the following: Warranty information Safety, regulatory, and other product marking information Steps to receive your shipment Steps to return a component for service ETS-Lindgren calibration service ETS-Lindgren contact information www.ets-lindgren.
2.0 Maintenance CAUTION: Before performing any maintenance, follow the safety information in the ETS-Lindgren Product Information Bulletin included with your shipment. WARNING: Maintenance of the Model 3126 is limited to external components such as cables or connectors. If the Model 3126 requires cleaning, use a clean soft cloth moistened with water. Do not use any harsh or abrasive chemicals; they may damage the components.
Service Procedures CONTACTING ETS-LINDGREN Note: Please see www.ets-lindgren.com for a list of ETS-Lindgren offices, including phone and email contact information. SENDING A COMPONENT FOR SERVICE For the steps to return a system or system component to ETS-Lindgren for service, see the Product Information Bulletin included with your shipment. CALIBRATION SERVICES AND ANNUAL CALIBRATION See the Product Information Bulletin included with your shipment for information on ETS-Lindgren calibration services.
3.0 Specifications Performance Specifications f0 = center frequency of dipole For a Model 3126-2450 Sleeve Dipole Antenna: A 20% band is 2450*0.20 = 490 MHz, so the dipole is calibrated from 2205 MHz to 2695 MHz. Band % Band % Band 1.2:1 2:1 Calibration Range (MHz) Minimum Gain VSWR VSWR Centered at f0 at f0 (dB) 400 MHz—600 MHz 1.5% 10% 600 MHz—836 MHz 2% 15% * 200 MHz 200 MHz Pass / Fail Criteria 1.5 1.2:1 VSWR on a 1.5% band centered at f0 Symmetry <0.
Band 14 2:1 Calibration Range (MHz) Minimum Gain VSWR VSWR Centered at f0 at f0 (dB) 836MHz—1000MHz 2.5% 15% 200 MHz 1.5 1.2:1 VSWR on a 2.5% band centered at f0 Symmetry <0.2 dB for 2:1 VSWR band Meet minimum gain at f0 1000MHz—1800MHz 3% 15% 300 MHz 1.5 1.2:1 VSWR on a 3% band centered at f0 Symmetry <0.2 dB for 2:1 VSWR band Meet minimum gain at f0 1800 MHz—1920 MHz 3% 15% 300 MHz 1.5 1.2:1 VSWR on a 3% band centered at f0 Symmetry <0.
Band % Band % Band 2:1 Calibration Range (MHz) Minimum Gain 1.2:1 VSWR VSWR Centered at f0 at f0 (dB) 2150 MHz—2840 MHz 4% 15% 20% of band 1.5 1.2:1 VSWR on a 4% band centered at f0 Symmetry <0.2 dB for 2:1 VSWR band Meet minimum gain at f0 2840 MHz—4500 MHz 2% 10% 500 MHz 1.4 1.2:1 VSWR on a 2% band centered at f0 Symmetry <0.2 dB for 2:1 VSWR band Meet minimum gain at f0 4500 MHz—6000 MHz 3% 15% 1000 MHz 1.0 1.2:1 VSWR on a 3% band centered at f0 Symmetry <0.
Physical Specifications 16 Model Diameter A Diameter B Length 3126–700 1.90 cm (0.75 in) 2.69 cm (1.06 in) 39.4 cm (15.5 in) 3126–836 1.90 cm (0.75 in) 2.69 cm (1.06 in) 24.46 cm (9.63 in) 3126–880 1.90 cm (0.75 in) 2.69 cm (1.06 in) 24.46 cm (9.63 in) 3126–920 1.90 cm (0.75 in) 2.69 cm (1.06 in) 24.13 cm (9.50 in) 3126–1225 1.90 cm (0.75 in) 2.69 cm (1.06 in) 22.86 cm (9.00 in) 3126–1575 1.90 cm (0.75 in) 2.69 cm (1.06 in) 21.59 cm (8.50 in) 3126–1845 1.90 cm (0.
4.0 Mounting Information CAUTION: The Model 3126 antennas are precision measurement devices. Handle your antenna with care. The Model 3126 Series Sleeve Dipole must be mounted to a support at the connector end of the antenna. An ETS-Lindgren mounting kit is recommended to support the antenna. Under no circumstances should any mounting structure extend inward more than 1.5 inches (38 mm) past the connector end of the antenna.
Ferrite loaded RF cables are recommended for use with the Model 3126 to minimize the interaction with the dipole. ETS-Lindgren offers a line of ferrite loaded cables for this application. Lightweight RF cabling should be used and properly supported to avoid putting unnecessary load on the SMA connector of the antenna.
5.0 Operation CAUTION: Before placing into operation, follow the safety information in the ETS-Lindgren Product Information Bulletin included with your shipment. It is recommended that a 10 dB pad/attenuator be used at the input end of the Model 3126 Series Sleeve Dipole to minimize standing waves on the transmit cable. This is especially important for frequencies where the input VSWR is greater than 1.2:1. The electric field of the antenna is polarized parallel to the antenna axis.
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Appendix A: Warranty Note: See the Product Information Bulletin included with your shipment for the complete ETS-Lindgren warranty for your Model 3126. Duration of Warranties All product warranties, except the warranty of title, and all remedies for warranty failures are limited to two years. Product Warranted Duration of Warranty Period Model 3126 Series Sleeve Dipole 2 Years www.ets-lindgren.
