Featured Downloads

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

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

  2. 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.

  3. Understanding Antenna Factors
    9/12/2016

    This white paper presents a brief introduction on the antenna factor, how to create AF data, and how to use AF data.

  4. 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.

  5. Understanding VSWR
    9/12/2016

    This white paper offers a brief overview on the history of VSWR, as well an introduction on short-circuit and open-circuit termination and the creation of standing waves.

  6. 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.

  7. Checklist On The 10 Factors You Need To Consider When Selecting An EMC Antenna
    9/12/2016

    This checklist covers the 10 factors that must be considered in the selection of an EMC test antenna.

  8. Typical RF Related Formula Conversion Guide
    8/18/2016

    A.H. System offers an application note that delivers a list of conversion factors used for EMI, EMC, and RF applications. The paper also includes how they are derived, and why they would be used.

  9. A.H. Systems Product Catalog
    6/21/2016

    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.

  10. Antenna Terms And Definitions
    2/10/2009

    A.H. Systems manufactures a complete line of affordable, reliable, individually calibrated EMC test antennas, preamplifiers, current probes and low-loss, high-frequency cables that satisfy FCC, MIL-STD, VDE, IEC, and SAE testing standards. This is a list of commonly used terms in the EMC community and their definitions.