ETS-Lindgren Model 3116 User manual

©EMC TEST SYSTEMS, L.P. –MARCH 2002 REV E –PN 399040
Model 3116
Double-Ridged
Waveguide Horn
MANUAL

MODEL 3116 DOUBLE-RIDGED WAVEGUIDE HORN
© EMC TEST SYSTEMS, L.P. –MARCH 2002
REV E –PN 399040
EMC Test Systems, L.P. reserves the right to make changes to any product described herein in order to
improve function, design or for any other reason. Nothing contained herein shall constitute EMC Test
Systems, L.P. assuming any liability whatsoever arising out of the application or use of any product or
circuit described herein. EMC Test Systems, L.P. does not convey any license under its patent rights or the
rights of others.
© Copyright 2002by EMC Test Systems, L.P. All Rights Reserved.
No part of this document may be copied by any means
without written permission from EMC Test Systems, L.P.
E-MAIL & INTERNET
[e-mail]
http://www.ets-lindgren.com
USA
1301 Arrow Point Dr., Cedar Park, TX 78613
P.O. Box 80589, Austin, TX 78708-0589
Tel [phone] Fax [phone]
FINLAND
Euroshield OY
Mekannikontie 1
27510, Eura, Finland
Tel [phone]
Fax [phone]
SINGAPORE
Lindgren RF Enclosures Asia-Pacific
87 Beach Road
#06-02 Chye Sing Building
Singapore 189695
Tel [phone] Fax [phone]

MODEL 3116 DOUBLE-RIDGED WAVEGUIDE HORN
© EMC TEST SYSTEMS, L.P. –MARCH 2002
REV E –PN 399040
Table of Contents
INTRODUCTION.................................................................................................................................. 1
MOUNTING INSTRUCTIONS............................................................................................................. 2
APPLICATION...................................................................................................................................... 4
TYPICAL DATA.................................................................................................................................... 5
SPECIFICATIONS................................................................................................................................ 7
MAINTENANCE................................................................................................................................... 8
WARRANTY STATEMENT................................................................................................................. 9

MODEL 3116 DOUBLE-RIDGED WAVEGUIDE HORN
© EMC TEST SYSTEMS, L.P. –MARCH 2002
REV E –PN 399040

MODEL 3116 DOUBLE-RIDGED WAVEGUIDE HORN Introduction
© EMC TEST SYSTEMS, L.P. –MARCH 2002 1
REV E –PN 399040
INTRODUCTION
The ETS-Lindgren EMCO brand Model 3116 Double-
Ridged Waveguide Horn Antenna is a linearly polarized
broadband antenna covering the frequency range of 18 GHz
up to 40 GHz. The Model 3116 was designed and built
specifically for emissions and susceptibility testing.
The antenna is precision machined from aluminum. A 50 V
type K female connector is mounted on the base block of
the antenna for increased performance at high frequencies.
Although the type K connector mates with type SMA
connectors when used with SMA connectors the high
frequency performance will be limited to the rating of the
SMA connector. It is recommended that cables with type K
connectors be used to ensure optimal performance.

Mounting Instructions MODEL 3116 DOUBLE-RIDGED WAVEGUIDE HORN
2© EMC TEST SYSTEMS, L.P. –MARCH 2002
REV E –PN 399040
MOUNTING INSTRUCTIONS
The Model 3116 can easily be mounted on a variety of
tripods including the ETS-Lindgren Model 4-TR.
The Model 3116 consists of the following:
1 ea Double Ridged Waveguide Horn
1 ea Mounting Bracket drilled to accept ETS-Lindgrenor
other tripod mount with ¼-20 threads
2 ea Thumb screws for attaching the horn to the mounting
bracket
NOTE When removing the Model 3116 from its mounting
bracket, take care to ensure that the antenna is supported
while removing the thumbscrews. Failure to support the
antenna when removing the thumbscrews could result in
damage to the antenna.
Step 1. Before the antenna is mounted on a tripod the user will
need to unscrew the thumbscrews and separate the antenna
from the mounting bracket and set it to the side.
Step 2. To mount the antenna on the tripod, attach the mounting
bracket to the tripod with the ¼-20 bolt. To attach the
antenna to the mounting bracket, with the connector facing
downward and while holding
the antenna with one hand,
line up the holes on the back
of the horn with the holes on
the bracket and insert and
tighten both thumbscrews.
Back Plate of Model 3116 Thumbscrew Holes

MODEL 3116 DOUBLE-RIDGED WAVEGUIDE HORN Mounting Instructions
© EMC TEST SYSTEMS, L.P. –MARCH 2002 3
REV E –PN 399040
Step 3. To rotate the antenna, while holding the antenna with one
hand remove both thumbscrews from the mounting bracket.
Rotate the antenna so the bracket holes line up with the two
horizontal mounting holes on the back of the antenna. Re-
insert and tighten the thumbscrews.
Type K Connector
Mounting Bracket
Thumbscrews
NOTE This illustration shows the Model 3116 vertically
polarized for the purpose of introducing the primary
mounting components. Typically the horn will be mounted
in the horizontally polarized position for testing.

Application MODEL 3116 DOUBLE-RIDGED WAVEGUIDE HORN
4© EMC TEST SYSTEMS, L.P. –MARCH 2002
REV E –PN 399040
APPLICATION
Each Model 3116 Double-Ridged Waveguide Antenna is
individually calibrated during the manufacturing process.
Apparent gain at 1 meter from the end of the antenna is
determined and included in this manual. This factor should
be used in specification compliance testing to convert
receiver reading (dBuV) to field intensity units (dBuV/M).
This conversion is accomplished by adding the antenna
factor in dB to the receiver reading in dB above 1
microvolt. To produce specific field strengths at one meter
spacings see the Forward Power data on page 6.

MODEL 3116 DOUBLE-RIDGED WAVEGUIDE HORN Typical Data
© EMC TEST SYSTEMS, L.P. –MARCH 2002 5
REV E –PN 399040
TYPICAL DATA
15 20 25 30 35 40
40
44
48
52
56
60
db 1/m
Frequency (GHz)
Model 3116 Antenna Factor
15 20 25 30 35 40
10
12
14
16
18
20
dB
Frequency (GHz)
Model 3116 Gain

Typical Data MODEL 3116 DOUBLE-RIDGED WAVEGUIDE HORN
6© EMC TEST SYSTEMS, L.P. –MARCH 2002
REV E –PN 399040
15 20 25 30 35 40
1.0
2.5
4.0
5.5
7.0
8.5
10.0
VSWR
Frequency (GHz)
Model 3116 VSWR
15 20 25 30 35 40
1E-3
0.01
0.1
1
10
100 1 V/m CW
1 V/m 80%AM
3 V/m CW
3 V/m 80%AM
10 V/m CW
10 V/m 80%AM
Forward Power (W)
Frequency (GHz)
Model 3116 Forward Power at 1 meter 1V/m to 10 V/m
Maximum Continuous Power for the Model 3116 is 50 Watts
The Maximum Peak Power Rating for this model is 70 Watts

MODEL 3116 DOUBLE-RIDGED WAVEGUIDE HORN Specifications
© EMC TEST SYSTEMS, L.P. –MARCH 2002 7
REV E –PN 399040
SPECIFICATIONS
Electrical
Frequency Range 18-40 GHz
VSWR Ratio (AVG) <1.6:1
Maximum Continuous Power 50 Watts
Peak Power 70 Watts
Impedance 50 V
Connector Type K female
Front to Back Ratio 20 dB
Cross Polarization 20 dB minimum
Physical
Width 13 cm
5.2 in
Depth 10 cm
4.0 in
Height 6 cm
2.4 in
Weight 135.0 g
4.7 oz

Maintenance MODEL 3116 DOUBLE-RIDGED WAVEGUIDE HORN
8© EMC TEST SYSTEMS, L.P. –MARCH 2002
REV E –PN 399040
MAINTENANCE
To ensure reliable and repeatable long-term performance,
annual recalibration of your antenna by ETS-Lindgren’s
experienced technicians is recommended. Our staff can
recalibrate almost any type or brand of antenna. Please call
to receive a Service Order Number prior to sending an
antenna to us for calibration.
For more information about our calibration services or to
place an order for antenna calibration visit our calibration
website at http://www.antennacalibration.com.

MODEL 3116 DOUBLE-RIDGED WAVEGUIDE HORN Warranty Statement
© EMC TEST SYSTEMS, L.P. –MARCH 2002 9
REV E –PN 399040
WARRANTY STATEMENT
EMC Test Systems, L.P., hereinafter referred to as the Seller, warrants that standard EMCO
products are free from defect in materials and workmanship for a period of two (2) years from
date of shipment. Standard EMCO Products include the following:
vAntennas, Loops, Horns
vGTEM cells, TEM cells, Helmholtz Coils
vLISNs, PLISNs, Rejection cavities & Networks
vTowers, Turntables, Tripods & Controllers
vField Probes, Current Probes, Injection Probes
If the Buyer notifies the Seller of a defect within the warranty period, the Seller will, at the Seller’s
option, either repair and/or replace those products that prove to be defective.
There will be no charge for warranty services performed at the location the Seller designates.
The Buyer must, however, prepay inbound shipping costs and any duties or taxes. The Seller will
pay outbound shipping cost for a carrier of the Seller’s choice, exclusive of any duties or taxes. If
the Seller determines that warranty service can only be performed at the Buyer’s location, the
Buyer will not be charged for the Seller’s travel related costs.
This warranty does not apply to:
vNormal wear and tear of materials
vConsumable items such as fuses, batteries, etc.
vProducts that have been improperly installed, maintained or used
vProducts which have been operated outside the specifications
vProducts which have been modified without authorization
vCalibration of products, unless necessitated by defects
THIS WARRANTY IS EXCLUSIVE. NO OTHER WARRANTY, WRITTEN OR ORAL, IS
EXPRESSED OR IMPLIED, INCLUDING BUT NOT LMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE REMEDIES
PROVIDED BY THIS WARRANTY ARE THE BUYER’S SOLE AND EXCLUSIVE REMEDIES.
IN NO EVENT IS THE SELLER LIABLE FOR ANY DAMAGES WHATSOEVER, INCLUDING
BUT NOT LIMITED TO, DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER LEGAL THEORY.
Note: Please contact the Seller’s sales department for a Return Materials Authorization (RMA)
number before shipping equipment to us.