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Methods for calibrating over-the-air path loss in over-the-air radio-frequency test systems

  • US 8,660,812 B2
  • Filed: 02/25/2011
  • Issued: 02/25/2014
  • Est. Priority Date: 06/04/2010
  • Status: Active Grant
First Claim
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1. A method of calibrating a test station with a reference device under test, wherein the test station includes a test chamber having an over-the-air antenna, a test unit, and a radio-frequency cable that connects the over-the-air antenna to the test unit, the method comprising:

  • calibrating a master test chamber that is different than the test chamber using a golden reference device under test that includes storage circuitry and that is placed within the master test chamber;

    calibrating the reference device under test in the calibrated master test chamber to obtain a reference offset; and

    with the reference device under test, calibrating the test chamber by computing a path loss based on the reference offset.

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