Esco ETS-Lindgren 3115 User manual

Models 3106B, 3112, 3115,
3116B, 3117, 3119
Double-Ridged
Waveguide Horn
User Manual

ii |
ETS-Lindgren L.P. 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.
© Copyright 2010 by ETS-Lindgren L.P. All Rights Reserved. No part of this document may
be copied by any means without written permission from ETS-Lindgren L.P.
Trademarks used in this document: The ETS-Lindgren logo is a trademark of ETS-Lindgren L.P.
Revision Record | Double-Ridged Waveguide Horn, MANUAL | Part #399318 Rev. A
Revision Description Date
A Initial Release October, 2010

| iii
Table of Contents
Notes, Cautions, and Warnings ...........................................................................iv
1.0 Introduction.....................................................................................................5
Positioner Options..................................................................................................................... 7
ETS-Lindgren Product Information Bulletin ............................................................................ 10
2.0 Maintenance .................................................................................................11
Annual Calibration................................................................................................................... 11
Replacement and Optional Parts............................................................................................ 11
Service Procedures................................................................................................................. 12
3.0 Specifications................................................................................................13
Electrical Specifications .......................................................................................................... 13
Physical Specifications............................................................................................................ 15
4.0 Mounting Instructions....................................................................................17
Model 3112 Optional Positioning System............................................................................... 17
4-TR Mounting Instructions..................................................................................................... 20
7-TR Mounting Instructions..................................................................................................... 22
5.0 Typical Data..................................................................................................25
Model 3112 ............................................................................................................................. 25
Model 3106B........................................................................................................................... 27
Model 3119 ............................................................................................................................. 29
Model 3115 ............................................................................................................................. 32
Model 3117 ............................................................................................................................. 33
Model 3116B........................................................................................................................... 35
Appendix A: Warranty.........................................................................................37
Appendix B: Typical Measured Radiated Patterns..............................................39
Model 3106B........................................................................................................................... 39
Model 3117 ............................................................................................................................. 41
Model 3119 ............................................................................................................................. 44

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.

Introduction | 5
1.0 Introduction
The ETS-Lindgren family of double-ridged waveguide horn antennas consists of
linearly polarized broadband antennas ranging in frequency from 100 MHz to
40GHz. These antennas were designed and built specifically for EMI
measurements and specifications compliance testing. However, they can also be
used for antenna gain, pattern measurement, surveillance, automotive and
military EMC immunity applications.
The Model 3112 Double-Ridged Waveguide
Horn Antenna is a linearly-polarized antenna
covering the frequency range of 100 MHz to 1
GHZ.
The Model 3112 is especially effective for
generating high electromagnetic fields with
relatively low power input. The antenna is also
useful for receiving low-level signals where high
gain characteristics are needed.
The Model 3106B Double-Ridged Waveguide
Horn is a linearly polarized broadband antenna
covering a frequency range of 200 MHz to 2.5
GHz. It is precision machined from aluminum,
making it lightweight and durable. Two brackets
are attached to the sides of the antenna so it can
be polarized either horizontally or vertically.
The Model 3106B has high gain and excellent
VSWR characteristics over the entire frequency
range. It is especially effective for generating
high electromagnetic fields with relatively lower
power input. The antenna is also useful for
receiving low level signals where high gain
characteristics are needed.

6 | Introduction
The Model 3119 Double Ridged Waveguide
Horn Antenna is a linearly polarized broadband
antenna covering the frequency range of 400
MHz to 6 GHz.
The Model 3119 is ideally suited for immunity
over 1 GHz, and as a reference antenna for
wireless testing. In addition, the 3119 is useful
for antenna pattern measurement as a source
antenna.
The Model 3115 Double Ridged Waveguide
Horn Antenna is a linearly polarized broadband
antenna covering the frequency range of 750
MHz to 18GHz.
The Model 3115 is ideally suited for IEC 61000-
4-3 and MIL-STD 461E immunity tests as well as
ANSI C634 and EN 55033 emissions testing. In
addition, the 3115 is useful for antenna pattern
measurement as a source antenna.
The Model 3117 Double Ridged Waveguide
Horn Antenna is a linearly polarized broadband
antenna covering the 1 GHz to 18 GHz
frequency range.
A single well defined main lobe radiation pattern
over the entire frequency range provides
excellent illumination of the Equipment Under
Test (EUT). The Model 3117 antenna is ideally
suited for IEC61000 4 3 and MIL STD 461/462
immunity tests as well as ANSI C634 and
EN 55033 emissions tests.

Introduction | 7
The ETS Lindgren Model 3116B Double Ridged
Waveguide Horn is a linearly polarized
broadband antenna covering the frequency
range 18 GHz to 40 GHz. The Model 3116B was
designed and built specifically for emissions and
susceptibility testing.
The Model 3116B is precision machined from
aluminum. A 50 ΩType K (2.92mm) female
connector is mounted on the base block of the
antenna for increased performance at high
frequencies
Models 3112 and 3117 shown with optional mounting systems.
Positioner Options
For instructions regarding mounting for each positioning system, see the user
manual for each positioner or the Mounting Instruction section of this manual.
MODEL 3112 POSITIONING SYSTEM
The Model 3112 features an
option for a fixed height pneumatic
assisted polarization positioning
system. The positioning system is
ideal when using the Model 3112
for immunity testing.

8 | Introduction
Power Supply 160 mA
120 VAC
Optional 220 VAC available
Pneumatic Interface 50-80 PSI
Weight 181.43 - 226.76 kg
400 -500lb
Maximum Height 355.6 cm
140 in
Maximum Weight 194.13 cm
76.43 in.
MODEL 4-TR TRIPOD
Constructed of linen phenolic and
delrin, the Model 4-TR Tripod is
designed with an adjustable center
post for precise height adjustments.
Maximum Height 2.0m
80.0 in.
Minimum Height 94 cm
37.0
Maximum Load 11.8 kg
26.0 lb

Introduction | 9
Model 7-TR Tripod
The Model 3112 antenna is not suitable for use with the 7TR
positioner
Constructed of PVC and fiberglass
components, providing increased
stability for physically large
antennas. The unique design
allows for quick assembly,
disassembly, and convenient
storage. The 7-TR 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 2.17m
85.8 in.
Minimum Height 0.8m
31.8 in.
Maximum Load 13.5 kg
30 lb
Straight Boom
(Standard) For general antenna mounting on a 7-TR
Offset Boom
(Optional) For general antenna mounting on a 7-TR with
pneumatic or manual polarization
Centerline Rotation
Boom
(Optional)
When changing polarization, maintains centerline
rotation, for rear-mount stinger-type antennas only
Model 3106B Boom
(Optional) For 3106B antenna only

10 | Introduction
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

Maintenance | 11
2.0 Maintenance
Before performing any maintenance, follow the safety
information in the ETS-Lindgren Product Information Bulletin
included with your shipment.
Maintenance of the double-ridged waveguide antennas is
limited to external components such as cables or connectors.
If you have any questions concerning maintenance, contact
ETS Lindgren Customer Service.
Annual Calibration
See the Product Information Bulletin included with your shipment for information
on ETS-Lindgren calibration services.
Replacement and Optional Parts
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.
Following are the part numbers for ordering replacement or optional parts for the
double-ridged waveguide antennas.
Part Description Part Number
User Manual 399318
Model 3112 Pneumatic Assisted Pedestal 109621
4-TR Tripod 4-TR
4-TR Mounting Bracket 101501
7-TR Tripod 7-TR
7-TR Straight Boom 109042
7-TR Offset Boom 108983
7-TR Centerline Rotation Boom 108197
7-TR Tripod, 3106B Mount, Pneumatic 7-TR/POL-3106
7-TR Boom, Model 3106B Only 108507

12 | Maintenance
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.

Specifications | 13
3.0 Specifications
Electrical Specifications
MODEL 3112
Frequency Range 100 MHz – 1 GHz
VSWR Ratio (Average) < 1.6:1
Maximum Continuous Power 800 W
Peak Power 1.5 kW (Type N, female connector)
2.5 kW CW (EIA 1 ⅝in. flange connector)
Impedance (nominal) 50 Ω
Connector Type N, female
EIA 1 ⅝in. flange
Front-to-Back Ratio 20 dB
Cross Polarization 20 dB minimum
MODEL 3106B
Frequency Range 200 MHz – 2.5 GHz
VSWR Ratio (Average) <1.6:1
Maximum Continuous Power 800 W
Peak Power 1600W
Impedance 50 Ω
Connector Type N female
Front-to-Back Ratio 20 dB
Cross Polarization 20 dB minimum
MODEL 3119
Frequency Range 400 MHz – 6 GHz
VSWR Ratio (Average) 3.5:1
Maximum Continuous Power 800W
Peak Power 2500 W
Impedance 50 Ω
Connector Type N, female
Front-to-Back Ratio 20 dB
Cross Polarization 20 dB minimum

14 | Specifications
MODEL 3115
Frequency Range 750 MHz – 18 GHz
VSWR Ratio (Maximum) 5:1
Maximum Continuous Power 500 Watts
Peak Power 500 Watts
Impedance 50 Ω
Connector Type N, female
Front-to-Back Ratio 20 dB
Cross Polarization 20 dB minimum
MODEL 3117
Frequency Range 1 GHz – 18 GHz
VSWR Ratio (Average) 3.5:1 max
<2:1 above 1.5 GHz
Maximum Continuous Power 300 Watts
Peak Power 400 Watts
Impedance 50 Ω
Connector Type N
Front-to-Back Ratio >6.42 db at 1 GHz
>12.08 dB at 2 GHz
>20 dB at 3 GHz – 18 GHz
Cross Polarization 20 dB at 3 GHZ – 18 GHz
MODEL 3116B
Frequency Range 18 GHz – 40 GHz
VSWR Ratio (Average) <1.6:1
Maximum Continuous Power 25 Watts
Peak Power 70 Watts
Impedance 50 Ω
Connector Type K (2.92mm) female
Front-to-Back Ratio 20 dB
Cross Polarization 20 dB minimum

Specifications | 15
Physical Specifications
MODEL 3112
Width 203.2 cm (80.0 in.)
Depth 182 cm (71.65 in.)
Height 139.7 cm (56.0 in.)
Approximate Weight 86.1 kg (189.81 lbs)
MODEL 3106B
Width 93.3 cm (36.7 in)
Depth 97.8 cm (38.50 in)
Height 72.90 cm (28.70 in.)
Approximate Weight 11.8 kg (26.01 lb)
MODEL 3119
Width 48.84 cm (19.23 in)
Depth 40.0 cm (15.74 in.)
Height 31.37 cm (12.35 in.)
Approximate Weight 7.4 kg (16.30 lb)
MODEL 3115
Width 24.4 cm (9.6 in)
Depth 27.9 cm (11.0 in)
Height 15.9 cm (6.2 in)
Approximate Weight 1.8 kg (4.0 lb)

16 | Specifications
MODEL 3117
Width 17.5 cm (6.9 in)
Depth 17.5 cm + 15.5 cm mount
(6.9 in + 6.1 in mount)
Height 15.5 cm (6.1 in)
Approximate Weight 1.13 kg (2.5 lb)
MODEL 3116B
Width 10.6 cm (4.2 in.)
Depth 9.6 cm + 5.0 cm mount
(3.8 in. + 2.0 in. mount)
Height 6.6 cm (2.60 in.)
Approximate Weight 0.15 kg (0.34 lb)

Mounting Instructions | 17
4.0 Mounting Instructions
Before connecting any components, follow the safety information
in the ETS-Lindgren Product Information Bulletin included with
your shipment.
The ETS-Lindgren Double-Ridged Waveguide Horn antennas are
precision instruments, handle with care
Model 3112 Optional Positioning System
The customer is responsible for providing an adequate and safe support
system for the Model 3112.
The Model 3112 includes a series of outer holes in the rear plate that is
compatible with the optional positioning system. Additionally, the mounting holes
can be used to meet customer-specific mounting requirements

18 | Mounting Instructions

Mounting Instructions | 19
CONNECTING THE OPTIONAL POSITIONING SYSTEM
For better field uniformity, loosen the nuts and turn the wheel at the base of the
horn support. This bore sights the horn 10 degrees.
MODEL 3112 INPUT LOCATIONS
AIR POLARIZATION OPTION

20 | Mounting Instructions
1. Plug the ends of the twin air hoses into the two AIR OUT connectors
located on the interface box at the base of the custom positioning
system.
2. Plug the other ends of the twin hoses into the two 90 degree fittings on
the air cylinder of the custom positioning system.
Attached to the air cylinder are flow control valves that allow variable speed on
polarization cycling. Use a small screwdriver to adjust the airflow through the
two 90-degree fittings. Because damage to the antenna may occur if the
speed is set too high, adjust the flow control valves to prevent damage
3. Plug one end of the single air hose into the AIR IN connector located on
the other side of the interface box at the base of the custom positioning
system.
4. Plug the other end of the single air hose into the air supply.
5. Plug one end of the fiber optic cable into the FIBER OPTIC INPUT
connector.
6. Plug the other end of the fiber optic cable into the remote controller; for
example, the ETS Lindgren Model 2090 Multi Device Controller (or next
generation ETS Lindgren controller, if applicable).
4-TR Mounting Instructions
Due to the size of Models 3112 and 3106B, do not mount these
antennas onto a 4-TR tripod.
Continuously support the antenna when attaching or removing
the mounting bracket or thumbscrews. Failure to provide
support may result in damage to the antenna.
ETS-Lindgren Double Ridged Waveguide Horns ship with the following mounting
hardware:
•Mounting bracket drilled to accept ETS-Lindgren or other tripod mount with
1/4–20 threads.
•Thumbscrews (2) for attaching the antenna to the mounting bracket.