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CALIBRATION SUBSTRATES

The GGB Industries, Inc., line of CALIBRATION SUBSTRATES allows the user to calibrate any GGB Industries, Inc., microwave Picoprobe® at the probe tip. The underlying principal of the calibration of a measurement system is to provide accurate known standards to which the measurement system can be connected. The GGB Industries, Inc., line of calibration substrates is such a standard. Each calibration substrate contains highly precise elements for calibrating out the unavoidable errors and losses in a microwave network analyzer, its associated cabling, and the microwave probe to ensure accurate on-wafer testing.

  • Supports Precise SOLT, LRL/TRL, and LRM/TRM calibrations
  • Includes CalKit software for easy loading to Network Analyzer
  • Wide pitch range from 30 to 2,540 microns
  • Suitable for all Picoprobes® from DC to 220 GHz
  • Available for GS, SG, GSG Footprints
  • Convenient alignment structures
  • Individually tested and trimmed to exacting standards

     

  • Note: The above specifications may vary.


    FIGURE 1

    Our accurate, easy to use calibration substrates, calibration coefficients, and detailed instructions allow you to correct the measurement system (network analyzer + cabling + probe) whenever it produces a reading different than the standard.

    The typical elements for calibrating a microwave measurement system consists of opens, shorts, matched loads, and throughs. These four elements have electrical characteristics that are very different from one another so that each element contributes an important part to the overall calibration process. In principle any set of standards could be employed, however, the more identical the standards are, the less accurate the calibration process becomes, which in turn results in inaccurate the on-wafer testing. Our precision crafted calibration substrates, when properly used, assure you of accurate on-wafer test results.

    How to select the correct calibration substrate for your probing application(s):

    1) Identify your Picoprobe's footprint and pitch (tip spacing);
    2) Determine which calibration type is appropriate for your application (SOLT, LRL/TRL, or LRM/TRM)*;
    3) Using the Calibration Substrate Selection Guide, choose the calibration substrate which matches your Picoprobe's footprint, recommended pitch range, and your preferred calibration type.

    Calibration Substrate Selection Guide
    Calibration
    Substrate
    Pad Size (microns) Calibration
    Types
    Supported
    Footprint Pitch Range
    Recommended
    (microns)
    Pitch Range
    Acceptable
    (microns)
    CS-5 50 X 50 SOLT, LRL,
    LRM
    GSG 75 - 250 75 -250
    CS-9 100 X 100 SOLT, LRL,
    LRM
    GSG 250 - 600 150 - 600
    CS-10 150 X 150 SOLT, LRM GSG 600 - 1250 225 - 1250
    CS-18

     

    300 X 300 SOLT, LRM GSG 1250 - 2540 500 - 2540
    FIGURE 2

    CS-8 50 X 50
    100 X 100
    150 X 150
    SOLT, LRM GS, SG 50 - 200 50 -300
    CS-14 100 X 100 SOLT, LRM GS, SG 200 - 400 150 - 600
    CS-11 150 X 150 SOLT, LRM GS, SG 400 - 1250 175 - 1250
    CS-17 300 X 300 SOLT, LRM GS, SG 750 - 2540 450 - 2540
    FIGURE 3

    Special Calibration Substrate Designed For Use Above 110 GHz
    Calibration
    Substrate
    Pad Size
    (microns)
    Calibration
    Types
    Supported
    Footprint Pitch Range
    Recommended
    (microns)
    Pitch Range
    Acceptable
    (microns)
    CS-15 25 X 25 SOLT, LRL,
    LRM
    GSG 40 - 150 (SOLT)
    30 - 150 (LRL)
    40 - 150
    FIGURE 4

    * SOLT = Short-Open-Load-Through
    LRL = Line-Reflect-Line (Which is equivalent to TRL = Through-Reflect-Line)
    LRM = Line-Reflect-Match (Which is equivalent to TRM = Through-Reflect-Match)

    Calibration Substrate Pdf Home Page

    GGB INDUSTRIES, INC. P.O. BOX 10958 NAPLES, FL 34101
    Telephone (239) 643-4400 Fax (239) 643-4403 Email email@ggb.com

    Picoprobe® is a registered trademark of GGB Industries, Inc.