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ESCO Technologies ETS-Lindgren BiConiLog 3142B Manual

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Archived 09/23/10
Model 3142B
™
BiConiLog
Ant e nna
MANUAL
© EMC TEST SYSTEMS, L.P. – MARCH 2002
REV C – PN 399229
www.valuetronics.com

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Summary of Contents for ESCO Technologies ETS-Lindgren BiConiLog 3142B

  • Page 1 Archived 09/23/10 Model 3142B ™ BiConiLog Ant e nna MANUAL © EMC TEST SYSTEMS, L.P. – MARCH 2002 REV C – PN 399229 www.valuetronics.com...
  • Page 2 Archived 09/23/10 Introduction MODEL 3142B BICONILOG™ ANTENNA 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.

  • Page 3: Table Of Contents

    Archived 09/23/10 MODEL 3142B BICONILOG™ ANTENNA Introduction Table of Contents INTRODUCTION ............................1 ASSEMBLY & MOUNTING INSTRUCTIONS ..................4 APPLICATION WITHOUT THE OPTIONAL END PLATES .............. 7 APPLICATION WITH THE OPTIONAL T BOW-TIE END PLATES ..........9 TYPICAL DATA WITHOUT THE END PLATES ................10 TYPICAL DATA WITH THE END PLATES ..................
  • Page 4 Archived 09/23/10 Introduction MODEL 3142B BICONILOG™ ANTENNA © EMC TEST SYSTEMS, L.P. – MARCH 2002 REV C – PN 399229 www.valuetronics.com...

  • Page 5: Introduction

    Archived 09/23/10 MODEL 3142B BICONILOG™ ANTENNA Introduction INTRODUCTION ETS-Lindgren EMCO brand Model 3142B BiConiLog™ Antenna is designed as a dual-purpose antenna that can be used for both emissions and immunity applications. The Model 3142B is a hybrid linearly polarized EMC antenna consisting of a log–periodic dipole array (LPDA) and a single bow-tie antenna.
  • Page 6 Archived 09/23/10 Introduction MODEL 3142B BICONILOG™ ANTENNA suspended horizontally back from the antenna at least 1 meter before any vertical drop. The antenna has a mounting bracket and 1/4X20 UNC knob for attaching to an ETS-Lindgren tripod or tower adapter. Individual antenna factors and gain calibration data is included with each antenna.
  • Page 7 Archived 09/23/10 MODEL 3142B BICONILOG™ ANTENNA Introduction equal length single-wire dipole. The T end plate option has its first resonance at a frequency where its length is about 0.22 λ, a regular bow-tie at a length of 0.3 λ, and a tuned dipole at about a length of 0.48 λ.

  • Page 8: Assembly & Mounting Instructions

    Archived 09/23/10 Assembly & Mounting Instructions MODEL 3142B BICONILOG™ ANTENNA ASSEMBLY & MOUNTING INSTRUCTIONS The Model 3142B consists of the following: 1 ea. Antenna 2 ea. Bow-Tie Elements 2 ea. 1/4x20 Knobs for attaching Bow-Tie elements. 2 ea. Protective End Caps on the Bow-Tie elements. 8 ea.
  • Page 9 Archived 09/23/10 MODEL 3142B BICONILOG™ ANTENNA Assembly & Mounting Instructions Step 3. Connecting the optional end plates to create the T bow-ties. The Model 3142B has a black end cap on each of the bow- tie elements to protect them. In order to utilize the optional end plates that create the T bow-ties, the black end caps must first be removed.
  • Page 10 Archived 09/23/10 Assembly & Mounting Instructions MODEL 3142B BICONILOG™ ANTENNA plates is mounted on a tower. Vertical polarization on a tripod requires special consideration. Since immunity power requirements are many dB lower for vertical polarization, the T end frames can be removed when mounting vertically on a standard tripod.

  • Page 11: Application Without The Optional End Plates

    Archived 09/23/10 MODEL 3142B BICONILOG™ ANTENNA Application Without the Optional End Plates APPLICATION WITHOUT THE OPTIONAL END PLATES For emissions measurements, electric fields strength in dB[V/m] is obtained from α E(dB[V/m]) = V(dB[V]+AF(dB[1/m])+ (dB) where V is the receiver or spectrum analyzer voltage reading, AF is antenna factor (see attached calibration α...
  • Page 12 Archived 09/23/10 Application Without the Optional End Plates MODEL 3142B BICONILOG™ ANTENNA For IEC 1000-4-3 type testing, the antenna tip can be placed at any distance between 1 and 3 m from the EUT as long as the front face plane is illuminated according to the –0,+6 dB specification.

  • Page 13: Application With The Optionalt Bow-Tie End Plates

    Archived 09/23/10 MODEL 3142B BICONILOG™ ANTENNA Application With The Optional T Bow-Tie End Plates APPLICATION WITH THE OPTIONAL T BOW-TIE END PLATES For emissions testing it is recommended that the Model 3142B be used without the optional end plates. The coupling of the endplates to ground will create higher uncertainty values, particularly in the vertical polarization.

  • Page 14: Typical Data Without The End Plates

    Archived 09/23/10 Typical Data without the End Plates MODEL 3142B BICONILOG™ ANTENNA dB uniform field specification. In general, closer distances require less power to create a given field strength. TYPICAL DATA WITHOUT THE END PLATES Figure 1 shows typical 26-200 MHz VWSR for the Model 3142B.
  • Page 15 Archived 09/23/10 MODEL 3142B BICONILOG™ ANTENNA Typical Data without the End Plates 1,000 Figure 1. Model 3142B Typical VSWR 10 m 1,000 1,200 1,400 1,600 1,800 2,000 Figure 2. Model 3142B Typical Antenna Factor © EMC TEST SYSTEMS, L.P. – MARCH 2002 REV C –...
  • Page 16 Archived 09/23/10 Typical Data without the End Plates MODEL 3142B BICONILOG™ ANTENNA 10 m 1,000 Figure 3. Model 3142B Typical Gain 1,000 0.01 0.001 1,000 Figure 4. Model 3142B Typical 1 V/m Power Required © EMC TEST SYSTEMS, L.P. – MARCH 2002 REV C –...

  • Page 17: Typical Data With The End Plates

    Archived 09/23/10 MODEL 3142B BICONILOG™ ANTENNA Typical Data with the End Plates TYPICAL DATA WITH THE END PLATES Figure 1 shows typical 26-2000 MHz VSWR for the Model 3142B with optional end plates. Figure 2 shows typical Model 3142B with optional end plates antenna factors from 26-2000 MHz.
  • Page 18 Archived 09/23/10 Typical Data with the End Plates MODEL 3142B BICONILOG™ ANTENNA 1000 Figure 1. Model 3142B typical VSWR. 10 m 1000 Figure 2. Model 3142B typical antenna factor. © EMC TEST SYSTEMS, L.P. – MARCH 2002 REV C – PN 399229 www.valuetronics.com...
  • Page 19 Archived 09/23/10 MODEL 3142B BICONILOG™ ANTENNA Typical Data with the End Plates 1000 1 V/m 3 V/m 10 V/m 3 V/m 80% AM Figure 3. Model 3142B typical 1 m forward power. 1000 1 V/m 3 V/m 10 V/m Figure 4. Model 3142B typical 3 m forward power. ©...

  • Page 20: Specifications

    Archived 09/23/10 Specifications MODEL 3142B BICONILOG™ ANTENNA SPECIFICATIONS ELECTRICAL 3142B With Standard Bow-tie With Optional End Plates Elements Frequency 26-2000 MHz 26-2000 MHz Range 50 ς 50 ς Input Impedance VSWR 2:1 average 2:1 average CW power 1 kW, above 100 MHz 1 kW, above 60 MHz 300 W, below 100 MHz 500 W, below 60 MHz...

  • Page 21: Maintenance

    Archived 09/23/10 MODEL 3142B BICONILOG™ ANTENNA Maintenance 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.

  • Page 22: Warranty Statement

    Archived 09/23/10 Warranty Statement MODEL 3142B BICONILOG™ ANTENNA 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.