Featured Downloads

  1. The Importance Of Antenna Beamwidth In RF Testing
    9/17/2019

    Antenna beamwidth determines the expected signal strength given the direction and radiation distance of an antenna. The beamwidth will vary given several different factors such as the antenna type, design, orientation and radio frequency. This white paper presents a better understanding of beamwidth and how it influences a test environment is critical to accurate and repeatable tests.

  2. EMC Test System Power Amplifier Checks
    8/28/2019

    This article describes a test procedure where the small signal performance data of an amplifier is gathered and checked against previously recorded data. This is a fault-finding step that establishes the health of the preamplifier.

  3. 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.

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. 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.

  10. 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.