Atec EMCO-3106, EMCO-3115, EMCO-3116 User Manual

Model 3106

200 MHz – 2 GHz

Model 3115

1 GHz – 18 GHz

● Uniform Gain

● Power Handling up to 1.6 kW

● Low VSWR

Model 3116

18 GHz – 40 GHz

MODEL 3106

Double-Ridged Waveguide Horn

PROVIDING UNIFORM GAIN, LOW VSWR AND A BROAD
FREQUENCY RANGE, EMCO's

three models of Double-Ridged
Waveguide Horn Antennas are ideally suited for IEC 61000-4-3
and MIL-STD 461E immunity tests and ANSI C63.4 and
EN 55022 emissions testing.

As a set, these linearly polarized broadband antennas have an
average VSWR of less than 1.6 to 1 and cover a multi-octave
bandwidth of 200 MHz to 40 GHz. These antennas are
specifically designed for EMI measurements, but can also be
used for EW, antenna gain and pattern measurement,
surveillance, and other applications.

The mounting brackets for Models 3115 and 3116 are adjust­able for changing polarization of the antenna. Standard
1/4 in x 20 threads are used on the mounting brackets of all
double-ridge waveguides for mounting on an EMCO tripod or
most other tripods.

EMCO Double-Ridged Waveguide Horn Features

Uniform Gain

All models have uniform gain throughout their frequency
span, providing efficient performance characteristics and
directionality.

Power Handling

Model 3106 can handle 1600 W peak and 800 W continuously.

Low VSWR

EMCO’s double-ridged waveguides have an average VSWR of
less than 1.6:1.

Quality Construction

Double-ridged waveguide antennas are constructed of light­weight corrosion-resistant aluminum and fiberglass, providing
years of trouble-free indoor and outdoor service. To maximize
performance, Type N connectors are used on Models 3115 and
3106, and Type K connectors are used on Model 3116.

Choosing Your Model: Three Models
with Frequency Ranges of 200 MHz to 40 GHz

200 MHz to 2 GHz

The Model 3106 has high gain and excellent VSWR character­istics over its entire frequency range. It 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. Although
large in size, 93.3 cm (36.7 in), this antenna weighs only

11.8 kg (26 lb). A Type N female connector is used for
increased power handling.

1 to 18 GHz

The Model 3115 has excellent gain and VSWR characteristics.
This antenna is small and portable with a length of 24.4 cm
(9.6 in). The feed system uses a Precision Type N female
connector so the antenna can handle considerable power with
low losses above 12 GHz.

18 to 40 GHz

The Model 3116 is an extremely small antenna, offering
portability and increased efficiency. The Model 3116 has a
length of only 13.0 cm (5.25 in), and weighs just 135 g
(4.74 oz). A Type K female connector is used for increased
performance at high frequencies.

● Quality Construction

2626

26

2626

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Standard Configuration

f y i

◗ Antenna
◗ Mounting bracket drilled to accept EMCO or other tripod

mount with 1/4 in x 20 threads

◗ Individually calibrated at 1 m per SAE ARP 958. Calibration

of Model 3115 at 3 m available at additional charge. Actual
factors and signed Certificate of Conformance included in
Manual.

One of the earliest horn antennas was constructed by
Jagadis Chandra Bose in 1897. Horn antennas are essentially
flared waveguides that produce a uniform phase front larger
than the waveguide itself. Adding a ridged waveguide to the
horn antenna increases its bandwidth by lowering the cut off
frequency of the dominant mode, while raising the cut off
frequency of the next higher order mode.

Options

Custom sizes

Larger models for higher gain at lower frequencies are also
available.

EMCO Tripod

EMCO offers several nonmetallic, non-reflective tripods for
use at EMC test sites. The 7-TR has been specifically designed
for the 3106.

Applications

MODELMODEL

MODEL

MODELMODEL

31063106

3106 RE RE RE, RI RE, RI RE, RI RE, RI RE, RI RE

31063106

31153115

3115 RE RE RE, RI RE, RI RE, RI RE, RI RE, RI TX, RX RX RE

31153115

31163116

3116 RE RE RE, RI RE TX, RX RX RE

31163116

RE = Radiated Emissions RI = Radiated Immunity (Susceptibility) TX = Transmit RX = Receive

FCC-15FCC-15

FCC-15

FCC-15FCC-15

FCC-18FCC-18

FCC-18

FCC-18FCC-18

IEC/CISPR/ENIEC/CISPR/EN

IEC/CISPR/EN

IEC/CISPR/ENIEC/CISPR/EN

SAE J1113SAE J1113

SAE J1113

SAE J1113SAE J1113

SAE J551SAE J551

SAE J551

SAE J551SAE J551

MIL-STD-461EMIL-STD-461E

MIL-STD-461E

MIL-STD-461EMIL-STD-461E

MIL-STD-1541MIL-STD-1541

MIL-STD-1541

MIL-STD-1541MIL-STD-1541

MIL-STD-285MIL-STD-285

MIL-STD-285

MIL-STD-285MIL-STD-285

IEEE STD 299IEEE STD 299

IEEE STD 299

IEEE STD 299IEEE STD 299

NACSIMNACSIM

NACSIM

NACSIMNACSIM

Double-Ridged Waveguide Horn

Electrical Specifications

MODELMODEL

MODEL

MODELMODEL

31063106

3106 200 MHz – 2 GHz

31063106

31153115

3115 1 GHz – 18 GHz

31153115

31163116

3116 18 GHz – 40 GHz

31163116

FREQUENCYFREQUENCY

FREQUENCY

FREQUENCYFREQUENCY

RANGERANGE

RANGE

RANGERANGE

VSWRVSWR

VSWR

VSWRVSWR
RATIORATIO

RATIO

RATIORATIO
(AVG)(AVG)

(AVG)

(AVG)(AVG)

<

1.6:1 800 W 1600 W 50 Ω Type N female

<

1.5:1 300 W 500 W 50 Ω Type N precision female

<

1.6:1 50 W 70 W 50 Ω Type K female

MAXIMUMMAXIMUM

MAXIMUM

MAXIMUMMAXIMUM

CONTINUOUSCONTINUOUS

CONTINUOUS

CONTINUOUSCONTINUOUS

POWERPOWER

POWER

POWERPOWER

PEAKPEAK

PEAK

PEAKPEAK

POWERPOWER

POWER

POWERPOWER

IMPEDANCEIMPEDANCE

IMPEDANCE

IMPEDANCEIMPEDANCE

(NOMINAL)(NOMINAL)

(NOMINAL)

(NOMINAL)(NOMINAL)

Physical Specifications

11

1

MODELMODEL

MODEL

MODELMODEL

31063106

3106 93.3 cm 97.8 cm 72.9 cm 11.8 kg

31063106

31153115

3115 24.4 cm 27.9 cm 15.9 cm 1.8 kg

31153115

31163116

3116 13.0 cm 10.0 cm 6.0 cm 135.0 g

31163116

1

At aperture

11

WIDTH WIDTH

WIDTH

WIDTH WIDTH

36.7 in 38.5 in 28.7 in 26.0 lb

9.6 in 11.0 in 6.2 in 4.0 lb

5.2 in 4.0 in 2.4 in 4.7 oz

DEPTHDEPTH

DEPTH

DEPTHDEPTH

HEIGHT HEIGHT

HEIGHT

HEIGHT HEIGHT

11

1

11

CONNECTORCONNECTOR

CONNECTOR

CONNECTORCONNECTOR

WEIGHTWEIGHT

WEIGHT

WEIGHTWEIGHT

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2727

27

2727

Model 3106 Technical Data

Double-Ridged Waveguide Horn

2828

28

2828

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Model 3115 Technical Data

Double-Ridged Waveguide Horn

USA:

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Model 3115 Double-Ridged Waveguide Horn

UK: ONLINE:

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2929

29

2929

Model 3116 Technical Data

Double-Ridged Waveguide Horn

3030

30

3030

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Model 3116 Double-Ridged Waveguide Horn

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Double-Ridged Waveguide Horn

USA:

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Custom Oversize Double-Ridged Waveguide Horn with Ring-Mount

FINLAND:

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3131

31

3131

MODEL 3164-03

Diagonal Dual Polarized Horn

● 400 MHz - 6 GHz Frequency

Range

● Simultaneous Measurements

for Both Horizontal and Vertical
Polarization

● Cross Polarization Isolation

Better Than 25 dB

● High RF Power Handling

Capability

EMCO Model 3164-03 Diagonal Dual Polarized Horn Antenna is

designed for wireless test applications and covers all
known wireless service frequencies. The antenna has two
orthogonally placed input feeds that permit simultaneous
measurements for dual polarizations. The antenna can be

Standard Configuration

◗ Horn assembly with mounting flange
◗ Manual
◗ Individually calibrated

used as both a linearly and circularly polarized antenna
over a very broad frequency range. While intended as a
receive antenna, the Model 3164 can be used as a radiator,
with a 200 W maximum continuous power handling

Options

None

capability.

New!

Released as we went to press.
Mode l 3164.04 700 MHz – 6 GHz

Electrical Specifications

MODEL FREQUENCY

RANGE

3164-03 400 MHz - 6 GHz <2.5:1 5 dBi -18 dBi >25 dB 200 W 50 Ω SMA (2)

VSWR
RATIO

(AVG)

DIRECTIVITY GAIN

OVER OPERATING

FREQUENCY

CROSS-

POLARIZATION

ISOLATION

MAXIMUM

CONTINUOUS

POWER

CONNECTORIMPEDANCE

(NOMINAL)

3232

32

3232

Physical Specifications

MODEL LENGTH

(OVERALL)

3164-03 50.8 cm 33.0 cm 33.0 cm 9.0 kg

USA:

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FINLAND:

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20.0 in 13.0 in 13.0 in 20.0 lb

UK:

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WIDTH

(APERTURE)

HEIGHT

(APERTURE)

Tel [phone]
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WEIGHT

Model 3164-03 Technical Data

)

3164-03 DUAL POLARIZED ANTENNA GAIN CHARACTERISTICS

20

18

dBi

16

14

12

10

dBi

8

6

4

2

0

0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 3.3 3.6 3.9 4.2 4.5 4.8 5.1 5.4 5.7 6.0 6.3 6.6 6.9 7.2 7.5

FREQ GHz

3164-03 CROSS POLARIZED ISOLATION

0

dB

-10

Frequency!(GHz)

Typical Cross-Polarization Level Cross-Polarization Limit (-25 dB

Typical Data Low Limit Upper Limit

Diagonal Dual Polarized Horn

-20

-30

-40

0.35 1.065 1.78 2.495 3.21 3.925 4.64 5.355 6.07 6.785 7.5

FREQ GHz

3164-03 TYPICAL VSWR DATA AT THE INPUT PORTS

5

VSWR

4

3

2

Frequency!(GHz)

1

0.35 1.065 1.78 2.495 3.21 3.925 4.64 5.355 6.07 6.785 7.5

FREQ GHz

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Frequency!(GHz)

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3333

33

3333

Model 3160 01-10

.96 GHz – 40 GHz

● Constant Antenna Factor

Over Frequency

Model 3161 01-03

1 GHz – 8 GHz

MODEL 3160 01-06

Standard Gain & Octave Horn

EMCO’S COAXIAL FED PYRAMIDAL STANDARD GAIN & OCTAVE
HORN ANTENNAS

cover a multi-octave bandwidth of 1 to
40 GHz in contiguous ranges. All models in the series are
linearly polarized, have medium gain, optimum half power
beamwidth (equal in both horizontal and vertical planes), and
low VSWR. Antenna factors are constant throughout the
entire operating frequency range. Comparisons of measured
versus computed gain have been found to be within ± 0.5 dB.
ANSI C63.4 recommends the use of standard gain horn
antennas as a reference standard above 1 GHz. Octave horns
are essentially the same as our standard gain horns, except
that they are equipped with waveguide-to-coaxial feeds which
are matched in frequency to common octave bandwidth
amplifier ranges.

Unlike other antennas of this type, each EMCO pyramidal
horn antenna comes assembled with a high performance, low
VSWR coaxial-to-waveguide adapter. When additional power
input levels are required, the coaxial feeds are easily removed
from the waveguides. Industry standard flanges mount
directly to amplifiers equipped with waveguide ports.
Precision Type N female connectors are used for antennas
operating below 18 GHz. Type K female connectors are used
above 18 GHz. A mounting bracket is included with all models
and allows either vertical or horizontal polarization measure­ments.

Precision manufacturing contributes to the predictable
performance of these antennas. Models 3160-01 through 06
are welded using precise tooling and aluminum sheet metal.
Models 3160-07 and 08 are investment cast using an alumi­num alloy. Models 3160-09 and 10 are electroformed using
copper deposition at the rate of 0.001 inch per hour.

EMCO Standard Gain Horn Antenna Features

Constant Antenna Factor

EMCO’s standard gain horns have a constant antenna factor
across their entire operating frequency, eliminating lookup in
multiple charts to calculate measurements. Above 1 GHz, the
antennas can be used as a reference standard per ANSI C63.4.

Increased Power Dissipation

While the coaxial feed allows power input of up to 550 W
(Model 3160-01, 02, 03), higher power input is possible by
removing the detachable feed and direct mounting the flange
to an amplifier waveguide port.

Optimal Beamwidth

The 3 dB beamwidth in both polarization planes is very nearly
equal at approximately 30 degrees. This is an optimum design
for EMC testing, providing good coverage of the EUT at
reasonable distances without the aiming problems of
“pencil beam” antennas.

Low VSWR

EMCO’s Standard Gain Horn Antennas provide a VSWR of
<1.5:1.

Complete with Feed, Waveguide,
and Mount

Unlike most antennas of this type, EMCO supplies a complete
unit with detachable coax-to-waveguide feed and mounting
brackets for both horizontal and vertical polarization. The
waveguide features industry-standard flange mounts.

● Increased Power Dissipation

● Optimal Beamwidth

● Low VSWR

● Complete with Feed,

Waveguide, and Mount

3434

34

3434

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Standard Configuration

f y i

◗ Standard gain or octave horn assembly consisting of

coaxial feed, flanged waveguide, and mounting bracket.

The development of standard gain horn antennas was

◗ Mounting bracket with 1/4 x 20 threads
◗ Complete calibration factors and signed Certificate of

Conformance included in Manual (Octave Horns only).

Calibration by measurement not applicable to Standard Gain Horns.

spurred by the arrival of World War II and with it, an increased
interest in microwave frequencies. The standard gain horn is
unique in that gain can be computed to a tenth of a decibel if
the antenna is manufactured with precision. This characteris­tic allows these antennas to serve as primary standards for

Options

None

gain measurements. Standard gain horns also have the ability
to realize specified beamwidths independently in the two
principal planes.

Applications

MODELMODEL

FCC-15FCC-15

MODEL

FCC-15

MODELMODEL

FCC-15FCC-15

31603160

3160 RE RE RE, RI RI RI RI RI RE, RI RE RE, RI RE

31603160

31613161

3161 RE RE RE, RI RI RI RI RI RE, RI RE RE, RI RE

31613161

RE = Radiated Emissions RI = Radiated Immunity (Susceptibility)

FCC-18FCC-18

FCC-18

FCC-18FCC-18

IEC/CISPR/ENIEC/CISPR/EN

IEC/CISPR/EN

IEC/CISPR/ENIEC/CISPR/EN

SAE J1113SAE J1113

SAE J1113

SAE J1113SAE J1113

SAE J1338SAE J1338

SAE J1338

SAE J1338SAE J1338

SAE J1507SAE J1507

SAE J1507

SAE J1507SAE J1507

SAE J1551SAE J1551

SAE J1551

SAE J1551SAE J1551

MIL-STD-461EMIL-STD-461E

MIL-STD-461E

MIL-STD-461EMIL-STD-461E

MIL-STD-1541MIL-STD-1541

MIL-STD-1541

MIL-STD-1541MIL-STD-1541

MIL-STD-285MIL-STD-285

MIL-STD-285

MIL-STD-285MIL-STD-285

Electrical Specifications

NACSIMNACSIM

NACSIM

NACSIMNACSIM

Standard Gain and Octave Horn

MODELMODEL

MODEL

MODELMODEL

3160-01 0.96 – 1.46 GHz 16.5 dBi 15.4 dB (1/m) 26

3160-02 1.12 – 1.70 GHz 16.3 dBi 16.9 dB (1/m) 26

3160-03 1.70 – 2.60 GHz 16.3 dBi 20.6 dB (1/m) 27

3160-04 2.60 – 3.95 GHz 16.7 dBi 23.7 dB (1/m) 26

3160-05 3.95 – 5.85 GHz 16.7 dBi 27.3 dB (1/m) 26

3160-06 5.85 – 8.20 GHz 17.1 dBi 29.9 dB (1/m) 24

3160-07 8.20 – 12.40 GHz 16.9 dBi 33.5 dB (1/m) 26

3160-08 12.40 – 18.00 GHz 16.7 dBi 37.1 dB (1/m) 26

3160-09 18.00 – 26.50 GHz 16.8 dBi 40.3 dB (1/m) 27

3160-10 26.50 – 40.00 GHz 17.0 dBi 43.5 dB (1/m) 27

3161-01 1.00 – 2.00 GHz 16.3 dBi 16.9 dB (1/m) 26

3161-02 2.00 – 4.00 GHz 17.5 dBi 22.3 dB (1/m) 22

3161-03 4.00 – 8.00 GHz 17.5 dBi 28.3 dB (1/m) 22

Gain shown is for mid-band of the operating range. Antenna factor is flat within ± 0.5 dB over each frequency.
Field Strength shown is for 1 meter separation.

FREQUENCYFREQUENCY

FREQUENCY

FREQUENCYFREQUENCY

RANGERANGE

RANGE

RANGERANGE

GAINGAIN

GAIN

GAINGAIN

ANTENNAANTENNA

ANTENNA

ANTENNAANTENNA

FACTORFACTOR

FACTOR

FACTORFACTOR

E -E -

E -

E -E -

PLANEPLANE

PLANE

PLANEPLANE

H -H -

H -

H -H -

PLANEPLANE

PLANE

PLANEPLANE

0

0

0

0

0

0

0

0

0

0

0

0

0

27

26

27

27

27

25

26

27

27

27

26

22

22

0

0

0

0

0

0

0

0

0

0

0

0

0

MAXIMUMMAXIMUM

MAXIMUM

MAXIMUMMAXIMUM

CONTINUOUSCONTINUOUS

CONTINUOUS

CONTINUOUSCONTINUOUS

POWERPOWER

POWER

POWERPOWER

550 W 700 V/m

550 W 700 V/m

500 W 650 V/m

250 W 500 V/m

250 W 500 V/m

250 W 500 V/m

250 W 500 V/m

200 W 435 V/m

50 W 220 V/m

10 W 100 V/m

550 W 700 V/m

250 W 500 V/m

250 W 500 V/m

STRENGTHSTRENGTH

STRENGTH

STRENGTHSTRENGTH

TYPICALTYPICAL

TYPICAL

TYPICALTYPICAL

FIELDFIELD

FIELD

FIELDFIELD

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3535

35

3535

Physical Specifications

MODELMODEL

MODEL

MODELMODEL

3160-01 63.22 cm 103.25 cm 47.50 cm 25.00 kg WR - 770 Type N female

3160-02 53.44 cm 88.29 cm 40.18 cm 10.00 kg WR - 650 Type N female

3160-03 34.65 cm 64.14 cm 64.14 cm 4.55 kg WR - 430 Type N female

3160-04 24.13 cm 55.25 cm 18.14 cm 2.27 kg WR - 284 Type N female

3160-05 16.33 cm 38.15 cm 12.24 cm 1.62 kg WR - 187 Type N female

3160-06 12.24 cm 29.90 cm 9.04 cm 0.80 kg WR - 137 Type N female

3160-07 8.06 cm 22.63 cm 6.26 cm 0.43 kg WR - 90 Type N female

3160-08 5.54 cm 14.00 cm 4.27 cm 0.28 kg WR - 62 Type N female

Standard Gain and Octave Horn

1

3160-09 3.84 cm 10.49 cm 2.95 cm 0.11 kg WR - 42 Type K female

1

3160-10 2.76 cm 8.69 cm 2.15 cm 0.06 kg WR - 28 Type K female

3161-01 53.14 cm 88.05 cm 39.86 cm 8.00 kg WR - 650 Type N female

3161-02 34.61 cm 59.34 cm 23.17 cm 5.00 kg WR - 320 Type N female

3161-03 17.47 cm 31.88 cm 11.74 cm 2.00 kg WR - 159 Type N female

1

Dimensions without mounting bracket.

WIDTHWIDTH

WIDTH

WIDTHWIDTH

24.89 in 40.65 in 18.70 in 55.00 lb

21.04 in 34.76 in 15.82 in 22.00 lb

13.64 in 25.25 in 25.25 in 10.00 lb

9.50 in 21.75 in 7.14 in 5.00 lb

6.43 in 15.02 in 4.82 in 3.50 lb

4.82 in 11.77 in 3.56 in 1.75 lb

3.17 in 8.91 in 2.46 in 0.95 lb

2.18 in 5.51 in 1.68 in 0.61 lb

1.51 in 4.13 in 1.16 in 0.24 lb

1.09 in 3.42 in .85 in 0.13 lb

20.92 in 34.67 in 15.69 in 17.60 lb

13.63 in 23.37 in 9.12 in 11.00 lb

6.88 in 12.55 in 4.62 in 4.40 lb

DEPTHDEPTH

DEPTH

DEPTHDEPTH

HEIGHTHEIGHT

HEIGHT

HEIGHTHEIGHT

WEIGHTWEIGHT

WEIGHT

WEIGHTWEIGHT

WAVEGUIDEWAVEGUIDE

WAVEGUIDE

WAVEGUIDEWAVEGUIDE

NUMBERNUMBER

NUMBER

NUMBERNUMBER

CONNECTORCONNECTOR

CONNECTOR

CONNECTORCONNECTOR

3636

36

3636

USA:

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Models 3160-09 and 3160-10 Standard Gain Horn

FINLAND:

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Model 3160 Technical Data

Standard Gain and Octave Horn

USA:

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Fax [phone]

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UK: ONLINE:

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3737

37

3737

Model 3161-01 Technical Data

Standard Gain and Octave Horn

Model 3161-02 Technical Data

3838

38

3838

USA:

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Model 3161-03 Technical Data

Standard Gain and Octave Horn

USA:

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3939

39

3939