# 1.0 Introduction. ETS-Lindgren 3160

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ETS-Lindgren 3160 is a pyramidal horn antenna. It is designed for radiated emissions measurements, radiated susceptibility measurements, and antenna pattern measurements. The antenna covers a frequency range of 30 MHz to 1 GHz with a gain of 12 dBi to 15 dBi. The antenna has a 3 dB beamwidth of 90 degrees in both the E-plane and H-plane. This makes it ideal for use with EMC test systems. The antenna is also lightweight and easy to handle, making it easy to use in a variety of applications.

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**1.0 Introduction **

The

**ETS-Lindgren Model 3160 Series Pyramidal Horn Antenna** is a series of pyramidal standard gain horn antennas designed specifically for utilization in emissions and immunity testing over the frequency range of 1 GHz to 40 GHz.

The Model 3160 Series includes models 3160-01 through 3160-10.

Each Model 3160 Series antenna is linearly polarized and has medium gain, wide half-power beamwidth (HPBW) in both the horizontal and vertical planes, low VSWR over the recommended operating frequency range, and constant antenna factors so that the antennas can be used without looking up tables or charts.

The performance of the Model 3160 Series is precise and predictable through design parameters. Both input and output are well matched to 50 Ω and 377 Ω respectively. Comparisons of measured versus computed gain and antenna factors have been found to be within ±0.5dB. The Model 3160 Series antennas are considered to be the standard reference of measurements above 1 GHz, as is the resonant dipole for measurements below 1 GHz.

Each Model 3160 Series antenna is ruggedly constructed for good electromagnetic performance.

Models 3160-01 through 3160-06 are welded using precise toolings and aluminum sheet metal.

Models 3160-07 and 3160-08 are investment casted using an aluminum compound.

Models 3160-09 and 3160-10 are electroformed using deposition of copper at a rate of 0.001 inch/hour for the highest precision available.

Models 3160-01 through 3160-08 are conversion coated and painted for protection against corrosion and changes in the weather. www.ets-lindgren.com Introduction

**9**

Each Model 3160 Series antenna comes completely assembled with a high performance, low VSWR, coax-to-waveguide adapter. Below 18 GHz, the transition from coax to waveguide is made using a female Precision N connector.

Above 18 GHz, the transition uses female K connectors. The coax-to-waveguide adapters are the only power-limiting component, and can be removed if high fields are desired. For this purpose, the RF generator must be equipped with waveguide ports. In such a configuration, fields in excess of 10,000 V/m at

10 meters can be obtained.

Each Model 3160 Series antenna comes with a standard 1/4–20 mount.

Horizontal and vertical polarizations are obtained by rotating the antennas from one position on the mount to the other. The mounts have been placed so as not to interfere with incoming electromagnetic energy. For the variety of mounting options available for the Model 3160 Series, see *Mounting Instructions* on

The Model 3160 Series may be used for either transmission or reception. The

50 ohm input impedance is well-matched for generating high electric fields with little power reflected back to the amplifier, reducing the chance of saturation. As a receiver, the antennas are matched to free space (377 ohms). Typical

performance data is provided beginning on page 37. Methods for radiated

emissions measurement are described on page 43.

For TEMPEST applications, all Model 3160 Series antennas, especially models

3160-03 and up, can be mounted on standard 12-, 18-, or 24-inch reflector dishes. The resulting antenna factor is usually about 20 dB lower than that of the antennas by themselves. However, the HPBW drops to less than 50 and the far field distance increases drastically making near field performance less predictable.

**10**

Introduction www.ets-lindgren.com

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### Key Features

- Frequency range: 30 MHz to 1 GHz
- Gain: 12 dBi to 15 dBi
- 3 dB beamwidth: 90 degrees in both the E-plane and H-plane
- Lightweight and easy to handle
- Rugged construction
- Resistant to corrosion
- Versatile

### Related manuals

### Frequently Answers and Questions

###### What is the frequency range of the ETS-Lindgren 3160?

###### What is the gain of the ETS-Lindgren 3160?

###### What is the 3 dB beamwidth of the ETS-Lindgren 3160?

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#### Table of contents

- 9 1.0 Introduction
- 11 Tripod Options
- 12 ETS-Lindgren Product Information Bulletin
- 13 2.0 Maintenance
- 13 Annual Calibration
- 14 Service Procedures
- 15 3.0 Specifications
- 15 Electrical Specifications
- 15 Model 3160 Series
- 15 Below 1 GHz
- 16 Model 3160-u
- 19 Physical Specifications
- 19 Model 3160 Series
- 20 Below 1 GHz
- 20 Model 3160-u
- 31 4.0 Mounting Instructions
- 32 3160-09 and 3160-10 Only
- 33 Mount to 4-TR
- 34 Mount to 7-TR and Mast
- 35 Mount to 2x2 Boom
- 37 5.0 Typical Data
- 37 Typical VSWR (3160-06)
- 38 Typical Gain and Antenna Factor (3160-06)
- 39 Calculated Far Field Gain
- 40 Geometry of the Horns
- 40 Calculated Gain
- 42 Typical Half-Power Beamwidth (3160-06)
- 43 6.0 Radiated Emissions Measurements
- 43 Measure Ambient Field Strength Values
- 44 Conversion Formulas
- 44 Equation
- 47 Appendix A: Warranty
- 49 Appendix B: Power Requirements
- 50 Table 1: Model 3160-01 Power Requirements at 1 Meter
- 50 Table 2: Model 3160-01 Power Requirements at 3 and 10 Meters
- 51 Table 3: Model 3160-02 Power Requirements at 1 Meter
- 51 Table 4: Model 3160-02 Power Requirements at 3 and 10 Meters
- 52 Table 5: Model 3160-03 Power Requirements at 1 Meter
- 52 Table 6: Model 3160-03 Power Requirements at 3 and 10 Meters
- 53 Table 7: Model 3160-04 Power Requirements at 1 Meter
- 53 Table 8: Model 3160-04 Power Requirements at 3 and 10 Meters
- 55 Table 9: Model 3160-05 Power Requirements at 1 Meter
- 56 Table 11: Model 3160-06 Power Requirements at 1 Meter
- 57 Table 13: Model 3160-07 Power Requirements at 1 Meter
- 58 Table 15: Model 3160-08 Power Requirements at 1 Meter
- 59 Table 17: Model 3160-09 Power Requirements at 1 Meter
- 60 Table 19: Model 3160-10 Power Requirements at 1 Meter
- 61 Appendix C: Model 3160 Series Data
- 61 Gain / Antenna Factor
- 62 Half-Power Beamwidth
- 63 Antenna Pattern: 3160-01 at 1.2 GHz
- 64 Gain / Antenna Factor
- 65 Half-Power Beamwidth
- 66 Antenna Pattern: 3160-02 at 1.41 GHz
- 67 Gain / Antenna Factor
- 68 Half-Power Beamwidth
- 69 Antenna Pattern: 3160-03 at 2.15 GHz
- 70 Gain / Antenna Factor
- 71 Half-Power Beamwidth
- 72 Antenna Pattern: 3160-04 at 3.3 GHz
- 73 Gain / Antenna Factor
- 74 Half-Power Beamwidth
- 75 Antenna Pattern: 3160-05 at 4.9 GHz
- 76 Gain / Antenna Factor
- 77 Half-Power Beamwidth
- 78 Antenna Pattern: 3160-06 at 7.0 GHz
- 79 Gain / Antenna Factor
- 80 Half-Power Beamwidth
- 81 Antenna Pattern: 3160-07 at 10.3 GHz
- 82 Gain / Antenna Factor
- 83 Half-Power Beamwidth
- 84 Antenna Pattern: 3160-08 at 15.2 GHz
- 85 Gain / Antenna Factor
- 86 Half-Power Beamwidth
- 87 Antenna Pattern: 3160-09 at 22.0 GHz
- 88 Gain / Antenna Factor
- 89 Half-Power Beamwidth
- 90 Antenna Pattern: 3160-10 at 33.0 GHz