Featured Downloads

  1. Biconical Antenna Selection
    7/12/2019

    For many years most regulatory standards called for the use of a half-wave dipole antenna set for frequencies above 20 MHz. However, to reduce test time, broadband antennas such as the biconical antennas began to be accepted. Broadband antennas, compared to half wave dipoles, reduce test time because the technician does not have to stop the test to adjust the dipole element length for each frequency of interest.

  2. Antenna Factor Calculations And Deviations
    7/12/2019

    In recent years, the use of a term call "Antenna Factor" in EMC and spectrum pollution work has become very important. There has been a great need for measuring field intensity and/or power density as accurately and conveniently as possible.

  3. 4 Reasons To Get A Bilogical Antenna First For Device Testing
    4/1/2019

    As more products use electronics and wireless, a bilogical antenna is the best first investment for internal RF testing.

  4. A.H. Systems Product Catalog
    3/21/2019

    A.H. Systems provides many models of portable antenna kits from 20 Hz to 40 GHz. Each kit contains all the necessary antennas, current probes, and cables. Each antenna is individually calibrated and all is contained in a rugged carrying case.

  5. Make Smart Use Of Preamps In RF Testing
    9/27/2018

    Engineers performing RF enclosure, emissions, or field testing frequently will need to use a preamp with their receiver and associated antenna. Some best practices can improve results and avoid problems.

  6. Antenna Selection By Test Type Catalog
    8/29/2018

    Are you ready to find the antenna that fits your testing needs? This A.H. Systems catalog simplifies antenna selection by categorizing some affordable and reliable EMI antenna options by test type.

  7. Antenna Factor Concepts
    4/17/2018

    An antenna factor (AF) is the comparison between the field level presented to the antenna and the actual voltage produced by the antenna at its connector. This white paper explains the process of creating AF data and how to use it.

  8. Shielding Effectiveness Test Guide
    4/17/2018

    Many products incorporate electronics and wireless communications and need RF interference testing. This requires shielding enclosures that need proper testing to ensure their correct operation.

  9. How To Perform A Radiated Emissions Measurement
    4/10/2017

    This article by A.H. Systems presents a step-by-step process of measuring the ambient field strength values for a radiated emissions measurement.

  10. Basic Bulk Current Injection Testing
    1/24/2017

    Bulk current injection (BCI) testing is a conducted susceptibility procedure that uses an injection current probe. This paper provides an example of BCI testing, covering all steps, including gathering the required equipment, pre-calibration procedures, injection testing procedures, and safety precautions.