Com-Power ALC-100 Manual

Log periodic antenna

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LOG PERIODIC ANTENNA
300 - 1000 MHz
MODEL ALC-100
rev: 120103

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Summary of Contents for Com-Power ALC-100

  • Page 1 LOG PERIODIC ANTENNA 300 - 1000 MHz MODEL ALC-100 rev: 120103...
  • Page 2 All equipment manufactured by Com-Power Corporation is warranted against defects in material and workmanship for a period of two (2) years from the date of shipment. Com-Power Corpora- tion will repair or replace any defective item or material if notifi ed within the warranty period.
  • Page 3 SAFETY PRECAUTIONS The model ALC-100 Log Periodic antenna were designed for use in an EMI labora- tory to measure and / or generate electric (E) fi eld strength. Test Operator and Test Location: The Model ALC-100 antenna should be operated by trained personnel in the fi...
  • Page 4 It is issued with the understanding that none of this material may be reproduced or copied without written permission from Com-Power. If You Need If you encounter problems while using the Model ALC-100, contact Com-Power Corporation at (714) 528-8800. Assistance...
  • Page 5: Table Of Contents

    Contents Section Page General Information ................1-1 Introduction ....................1-1 General Description ................. 1-1 Equipment Specifi cations ................. 1-1 Equipment, Accessories, and Documents Supplied ......... 1-3 Connecting Procedures ..............2-1 Introduction ....................2-1 Antenna Setup ..................2-1 Theory of Operation ................3-1 Overview ....................3-1 Theory of Operation .................
  • Page 6: General Information

    1.2 General Description The Model ALC-100 Log Periodic antennna was specifi cally designed for radiated EMI measurement over a wide frequency range. This antenna was designed to receive radiated EMI signals or transmit signals during susceptiblity testing for various agency specifi...
  • Page 7 Figure 1.1 ALC-100 Log Periodic Antenna ALP-100 Log Periodic Antenna...
  • Page 8: Equipment, Accessories, And Documents Supplied

    1.4 Equipment, Accessories, and Documents Supplied Equipment, accessories, and documents supplied with the ALC-100 Log Periodic Antennas are as follows: One (1) Log Periodic Antenna User's Guide Calibration information ALP-100 Log Periodic Antenna...
  • Page 9: Equipment Specifi Cations

    Table 1.1 Equipment Specifi cations Model: ALC-100 Frequency Range: 300 - 1000 MHz VSWR (typ.) 1.2: :1 Impedance: 50 ohms (nominal) Power Handling: 500 Watts CW Connector: N (f) Weight : 4.5 lbs. Mounting: Center Pivoting joint for Hori- zontal .
  • Page 10 Figure 1.2 - Typical Antenna Factors for ALC-100 Log Periodic Antenna ALP-100 Log Periodic Antenna...
  • Page 11: Introduction

    2.1.2 Antenna setup for receiving signals The or Model ALC-100 antenna can be used to measure EMI from an equipment under test (EUT). The antenna is mounted on either an antenna mast (Model AM- 400) or an antenna tripod.
  • Page 12 The Log Periodic Antenna must be mounted and placed in area away from other conductive objects or materials when in use. Large conductive building, struc- tures and electrical cables, can refl ect emissions of the equipment under test, causing errors in the test data. In addition, care should be taken to keep measuring intruments and test personnel away from the test area to avoid interference to the test, and exposure of test personnel to electromagnetic fi...
  • Page 13: Theory Of Operation

    Overview Theory of Operation Functional Block Diagram 3.0 Overview This section describes the theory of operation of the ALC-100 Log Peri- odic Antenna. 3.1 Theory of Operation Broadband antennas allow measurement of signals over a wide frequency range. These antennas do not require any tuning or balun switching during measurement.

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