ESCO Technologies ETS-Lindgren 3126 Series Manual de usuario

Model 3126 Series

Sleeve Dipole Antenna

Product Manual

PN: 1723532

November, 2022

Rev B

ets-lindgren.com

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.

document may be copied by any means without written permission from ETS-Lindgren Inc.

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

Teﬂon is a registered trademark of E. I. du Pont de Nemours and Company or its afﬁliates.

Revision Record

MANUAL, 3126C | Part # 1723532 Rev B

Revision Description Date

AInitial Release January, 2021

BUpdate to match antenna version November, 2022

TABLE OF CONTENTS

NOTES, CAUTIONS AND WARNINGS 4

INTRODUCTION 5

Standard Conﬁguration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

ETS-Lindgren Product Information Bulletin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

MAINTENANCE 6

Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Service Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Contacting ETS-Lindgren . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Sending a Component For Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Calibration Services and Annual Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

SPECIFICATIONS 7

Performance Speciﬁcations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Physical Speciﬁcations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

MOUNTING 8

OPERATION 9

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.

*All notes, cautions, and warnings will be located on the left column area of the page.

See the ETS-Lindgren Product Information BulletinProduct Information Bulletin for safety, regulatory, and other product

marking information

WARRANTY

Only qualiﬁed

personnel should

operate (or service)

this equipment.

If you have any

questions concerning

maintenance, contact

ETS-Lindgren Technical

Support. Warranty may

be voided if housing is

opened.

See the ETS-Lindgren

Product Information

Bulletin for safety,

regulatory, and other

product marking

information.

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.

INTRODUCTION

The ETS-Lindgren Model 3126C Series Sleeve Dipole antennas are

omnidirectional, having an electric dipole pattern approaching that of a half wave

resonant dipole.

The sleeve dipole design allows the antenna to be end fed to avoid cable and feed

point interactions that interfere with the performance of the antenna. Integral

quarter wave chokes and ferrite loading also help to reduce cable interaction. The

max VSWR is 1.75:1 through the entire band. Symmetry is <±0.2 dB throughout

the frequency range. The dipoles have nominal impedance of 50 Ω, a maximum

continuous transmit power of one watt, and are equipped with a female SMA

connector.

Standard Conﬁguration

• Model 3126C Sleeve Dipole Antenna

• Accredited Calibration certiﬁcate for the VSWR, Gain and Symmetry

ETS-Lindgren Product Information Bulletin

See the ETS-Lindgren Product Information Bulletin included with your

shipment for the following:

• 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

MAINTENANCE

Cleaning

Maintenance of the Model 3126 is limited to external components such as cables

or connectors.

If the 3126C 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

Please see 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.

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.

SPECIFICATIONS

Performance Speciﬁcations

Model Range Pass/Fail Criteria

3126C-3500 3 GHz to 4 GHz a) Symmetry < 0.2dB through entire Calibration Range

b) Max VSWR is 1.75:1 through entire band.

c) Gain for 3126C-3500 must be greater than 1.0 at center

frequency.

3126C-4500 4 GHz to 5 GHz

3126C-5500 6 GHz to 7.2 GHz

Model VSWR Entire Band Gain Calibration Range (MHz) Pts per Trace

Upper

Limit

From-To Lower

Limit

Upper

Limit

From-To Span

(MHz)

3126C-3500 1.75:1 3000-4000 1.0 2.2 3000-4000 1000 501

3126C-4500 1.75:1 4000-5000 2.2 4000-5000 1000 501

3126C-5500 1.75:1 6000-7200 2.2 6000-7000 1000 601

Electrical Speciﬁcations

Maximum Continuous Power 1 Watt

Impedance (Nominal) 50 Ohms

Connector SMA

Physical Speciﬁcations

Model Diameter A Diameter B Overall Length Weight

3126C-3500 1.9 cm (0.75 in) 7.62 cm (3.00 in) 20.83 cm (8.20 in) 0.13 kg (0.29 lb)

3126C-4500 1.9 cm (0.75 in) 7.62 cm (3.00 in) 20.83 cm (8.20 in) 0.13 kg (0.29 lb)

3126C-5500 1.9 cm (0.75 in) 7.62 cm (3.00 in) 20.83 cm (8.20 in) 0.13 kg (0.29 lb)

3126C antennas are

precision measurement

devices. Handle your

antenna with care.

WARRANTY

Only qualiﬁed

personnel should

operate (or service)

this equipment.

If you have any

questions concerning

maintenance, contact

ETS-Lindgren Technical

Support. Warranty may

be voided if housing is

opened.

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.

MOUNTING

The Model 3126C Series Sleeve Dipole Antenna 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. This area

approaches the radiating element of the antenna and any material in this region

will signiﬁcantly change the performance of the antenna and affect the accuracy

of the measurement. The mounting structure should have a low dielectric and a

minimum amount of mass in the region of the antenna.

When mounting to an ETS-Lindgren mounting kit:

• The antenna mount consists of a Teﬂon®sleeve with small clamp screws to

hold the antenna in place.

• Fixed length spacers are then attached to the mounting sleeve to position it at

each test position. For repeatable positioning, the antenna must be inserted

into the sleeve until it bottoms out in the socket, then the clamp screws should

be tightened symmetrically around the antenna to ensure that the axis of the

antenna is along the axis of the mount.

• Note that an RF cable must be attached to the antenna prior to inserting it into

the mounting socket.

• An optional blind mate socket and adaptor combination is available to allow

attaching the cable to the Teﬂon socket adapter and sliding the antenna with

blind mate connector adaptor into the RF socket.

Ferrite loaded RF cables are recommended for use with the Model 3126C 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. Route cabling away from the antenna along the antenna axis for as

far away as is practical to minimize the interaction of the cable with the antenna

and to avoid distortion of the antenna pattern.

Before placing into

operation, follow the

safety information

in the ETS-Lindgren

Product Information

Bulletin included with

your shipment.

OPERATION

It is recommended that a 10 dB pad/attenuator be used at the input end of the

Model 3126C 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. The

speciﬁed antenna gain is realized along the plane perpendicular to the antenna

axis and centered at the center of the dipole elements. The center of the dipole

elements (bore sight location) is indicated by a line marked on the dipole,

approximately 5.9 inches (15 cm) from the base (connector end) of the antenna

housing.

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