ETS-Lindgren 3150B User Manual

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Model 3150B

Dual-Stacked Log Periodic

Dipole Array Antenna

Assembly Manual

ETS-Lindgren, Inc. reserves the right to make changes to any products herein to improve

Revision

Description

Date

Initial Release

October, 2012

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.

Trademarks used in this document: The ETS-Lindgren logo is a trademark of ETS-Lindgren, Inc.

Revision Record | MANUAL,3150B | Part #399335, Rev. A

ii |

Table of Contents

Notes, Cautions, and Warnings ......................................................................... v

1.0 Introduction ................................ ................................ ................................ ... 7

Standard Configuration ....................................................................................................... 8

Optional 7-TR Tripod .......................................................................................................... 9

ETS-Lindgren Product Information Bulletin ........................................................................ 9

2.0 Maintenance ................................................................ ................................ 11

Replacement and Optional Parts ..................................................................................... 11

Service Procedures .......................................................................................................... 11

3.0 Specifications .............................................................................................. 13

Electrical Specifications .................................................................................................... 13

Physical Specifications ..................................................................................................... 13

4.0 Assembly Instructions ............................................................................... 15

Components to Assemble ................................................................................................ 15

Attach the Removable Elements ...................................................................................... 16

Overview of Steps ............................................................................................................ 17

Attach Two Boom Assemblies to Center Support Bar ..................................................... 18

Attach Feed Boom Assembly ........................................................................................... 20

Attach Remaining Two Boom Assemblies to Side Support Bars ..................................... 21

5.0 Mounting onto a 7-TR Tripod ..................................................................... 25

6.0 Disassembly Instructions .......................................................................... 29

7.0 Typical Data ................................................................................................. 31

Typical Antenna Factor and Gain ..................................................................................... 31

Typical Average Power Requirements ............................................................................. 32

Measured Power Requirements ................................................................................ 32

Horizontal Polarization, 2-M Distance ........................................................................ 33

Horizontal Polarization, 3-M Distance ........................................................................ 34

Vertical Polarization, 2-M Distance ............................................................................ 35

Vertical Polarization, 3-M Distance ............................................................................ 36

Typical VSWR................................................................................................................... 37

Typical Half Power Beamwidth ......................................................................................... 38

Typical Radiation Patterns ................................................................................................ 39

80 MHz—100 MHz ..................................................................................................... 39

200 MHz—300 MHz ................................................................................................... 40

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400 MHz—500 MHz ................................................................................................... 41

600 MHz—700 MHz ................................................................................................... 42

800 MHz—900 MHz ................................................................................................... 43

1000 MHz—2000 MHz ............................................................................................... 44

Appendix A: Warranty ...................................................................................... 45

iv |

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.

See the ETS-Lindgren Product Information Bulletin for safety, regulatory, and other product marking information.

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vi |

The ETS-Lindgren Model 3150B Dual-Stacked Log Periodic Dipole Array (LPDA) Antenna is comprised

of two separate 100 ohm LPDAs. The result is a 50 ohm input impedance array when assembled in parallel, providing increased gain when compared to a single LPDA. Also, the VSWR is low so that it provides excellent match with the amplifier, resulting in the generation of a high field per input power.

1.0 Introduction

The Model 3150B is ideal in situations where high fields need to be generated. Although the Model 3150B can be used as a receive antenna, the primary application is for generating the high fields that are required in automotive EMC applications per standards like ISO 11541-2, or for MIL-STD susceptibility testing.

The frequency range covers 80 MHz to 1 GHz. The Model 3150B can generate 200 V/m with less than 1 kW of input power at a 1-m distance for the 100 MHz to 1 GHz range. When combined with ETS-Lindgren Model 3159 or Model 3158 High-Power Biconical Antennas, the 3150B becomes an integral part of the ETS-Lindgren high severity level immunity solution.

The Model 3150B is fitted with a 7/16 coaxial connector. With this connector the antenna can handle up to 5 kW of input power at 80 MHz and up to 3 kW at 1 GHz.

For easy horizontal and vertical polarization changes, the ETS-Lindgren 7-TR Tripod is recommended; a special cross boom is required to use the Model 3150B with the 7-TR. For information on the 7-TR and special cross boom, see page 9. For mounting instructions, see Mounting onto a 7-TR Tripod on page 25.

Introduction | 7

 Feed Boom Assembly

 Boom Assemblies (4)

The five longest elements (the last five elements from the bottom of each boom assembly) are removed for shipping. To attach the removable elements to the boom assembly, see page 16.

(one boom assembly shown with

the five removable elements attached)

 Center Support Bar

 Side Support Bars (2)

Standard Configuration

The Model 3150B ships unassembled, and includes the following components to be assembled, plus the necessary fasteners. For assembly steps, see page 15.

8 | Introduction

The Model 3150B mounts to an ETS-Lindgren 7-TR Tripod using a special cross boom (part# 118556). To order a 7-TR and cross boom, contact ETS-Lindgren Sales.

The ETS-Lindgren 7-TR Tripod is constructed of PVC and fiberglass components, providing increased stability for physically large antennas. The unique design allows for quick assembly, disassembly, and convenient storage. Allows several different configurations, including options for manual or pneumatic polarization. Quick height adjustment and locking wheels provide ease of use during testing. Maximum height is

2.17 m (85.8 in), with a minimum height of 0.8 m (31.8 in). This tripod can support a 13.5 kg (30 lb) load.

7-TR shown with standard boom

Optional 7-TR Tripod

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

Introduction | 9

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10 | Introduction

Before performing any maintenance, follow the safety information in the ETS-Lindgren Product Information Bulletin included with your shipment.

Maintenance of the Model 3150B is limited to external components such as cables or connectors. If you have any questions concerning maintenance, contact ETS-Lindgren Customer Service.

If you have any questions concerning maintenance, contact ETS Lindgren Customer Service.

ETS-Lindgren may substitute a similar part or new part number with the same functionality for another part/part number. Contact ETS-Lindgren for questions about part numbers and ordering parts.

Part Description

Part Number

7-TR Cross Boom for 3150B

118556

WARRANTY

2.0 Maintenance

Replacement and Optional Parts

Following are the part numbers for ordering replacement or optional parts for the Model 3150B Dual Stacked Log Periodic Dipole Array (LPDA) Antenna.

Service Procedures

For the steps to return a system or system component to ETS-Lindgren for service, see the Product Information Bulletin included with your shipment.

Maintenance | 11

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12 | Maintenance

Frequency Range:

80 MHz to 1 GHz

VSWR (Average):

2:1

Maximum Continuous Power:

5 kW at 80 MHz, 2.5 kW at 1 GHz

Peak Power:

7 kW at 80 MHz, 4 kW at 1 GHz

Impedance (Nominal):

50 Ω

Connector:

7/16 female

Height:

203.07 cm (79.95 in)

Width:

209.07 cm (82.31 in)

Depth:

150.44 cm (59.23 in)

Weight:

10.56 kg (23.28 lb)

3.0 Specifications

Electrical Specifications

Physical Specifications

Specifications | 13

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14 | Specifications

Before assembling or connecting any components, follow the safety information in the ETS-Lindgren Product Information Bulletin included with your shipment.

Take care when assembling the Model 3150B. Make sure the antenna is on a stable surface at all times.

Assembly steps require assistance from one or more crewmembers.

The four boom assemblies are identical and interchangeable.

You will require a Phillips screwdriver (not included) to assemble the Model 3150B.

4.0 Assembly Instructions

Components to Assemble

Assembly Instructions | 15

Do not cross thread the connection or permanent damage to the element or boom could occur.

Attach the Removable Elements

The five longest elements on each boom assembly (the last five from the bottom) are removed for shipping, and should be re-attached during assembly inside the chamber.

The elements and the location on the boom assembly where they attach are marked with the numbers 1, 2, 3, 4, and 5.

1. Match the number 1 on the element with the number 1 on the boom.

The end of the element and the connector on the boom are threaded; rotate the element into the connector, and then hand tighten.

2. Repeat step 1 for elements marked 2, 3, 4, and 5, attaching them to the corresponding locations on the boom marked 2, 3, 4, and 5.

3. Repeat step 1 and step 2 for each boom assembly.

16 | Assembly Instructions

Before you begin, see page 16 to attach the removable elements to each boom assembly.

Overview of Steps

Assembly Instructions | 17

Before you begin, see page 16 to attach the removable elements to each boom assembly.

Attach Two Boom Assemblies to Center Support Bar

18 | Assembly Instructions

Assembly Instructions | 19

Attach Feed Boom Assembly

20 | Assembly Instructions

Attach Remaining Two Boom Assemblies to Side Support Bars

Assembly Instructions | 21

22 | Assembly Instructions

Assembly Instructions | 23

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24 | Assembly Instructions

The Model 3150B mounts to an ETS-Lindgren 7-TR Tripod using a special cross boom (part# 118556). Install the 118556 cross boom prior to mounting the Model 3150B onto the 7-TR.

5.0 Mounting onto a 7-TR Tripod

Mounting onto a 7-TR Tripod | 25

26 | Mounting onto a 7-TR Tripod

Mounting onto a 7-TR Tripod | 27

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28 | Mounting onto a 7-TR Tripod

Before disconnecting any components, follow the safety information in the ETS-Lindgren Product Information Bulletin included with your shipment.

Place the Model 3150B on a stable surface before disassembling. As you remove parts, place them in a safe location. Store disassembled components in secure, protective location. Retain all fasteners.

See the corresponding step in Assembly Instructions on page 15 for detailed information about how each component is attached.