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. 

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

    In recent years, the use of a term called "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. 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.

  5. 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.

  6. 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.

  7. 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.

  8. VSWR vs. Returned Power Cheat Sheet 9/12/2016

    This paper offers a cheat sheet to help understand the correlation of VSWR to the percentage of reflected power that will return.

  9. Voltage Standing Wave Ratio (VSWR) Explained 9/12/2016

    Explore the evolution of VSWR from its humble beginnings in telegraph lines to its vital role in modern RF engineering, illuminating its practical applications and underlying principles.

  10. Boosting Weak Emissions Measurements 9/12/2016

    In order to boost signal levels from antennas to receivers in an emissions test set-up, an engineer can use an RF preamplifier combined with an antenna in order to create an active antenna.