Calibration Substrate

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.

Calibration Substrate PDF

  • 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

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
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
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

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)

Differential Calibration Substrate Selection Guide GSGSG
Calibration
Substrate
Pad Size (microns) Calibration
Types
Supported
Footprint  

Recommended Pitch
(microns)

 

Acceptable Pitch
(microns)
CS-2-50 25 X 25 SOLT, LRL
LRM
GSGSG 50 45-55
CS-2-75 25 X 25 SOLT, LRL
LRM
GSGSG 75 70-80
CS-2-100 50 X 50 SOLT, LRL
LRM
GSGSG 100 90 - 110
CS-2-125 50 X 50 SOLT, LRL
LRM
GSGSG 125 115 - 135
CS-2-150 50 X 50 SOLT, LRL
LRM
GSGSG 150 140 -160
CS-2-200 50 X 50 SOLT, LRL
LRM
GSGSG 200 190 - 210
CS-2-225 50 X 50 SOLT, LRL
LRM
GSGSG 225 215 - 235
CS-2-250 50 X 50 SOLT, LRL
LRM
GSGSG 250 240 -260
CS-2-300 100 X 100 SOLT, LRL
LRM
GSGSG 300 275 - 325
CS-2-350 100 X 100 SOLT, LRL
LRM
GSGSG 350 325 - 375
CS-2-400 100 X 100 SOLT, LRL
LRM
GSGSG 400 375 - 425
CS-2-450 100 X 100 SOLT, LRL
LRM
GSGSG 450 425 - 475
CS-2-500 100 X 100 SOLT, LRL
LRM
GSGSG 500 490 - 510
CS-2-750 150 X 150 SOLT, LRL
LRM
GSGSG 750 700 - 800
CS-2-1000 150 X 150 SOLT, LRL
LRM
GSGSG 1000 990 - 1010
CS-2-1250 150 X 150 SOLT, LRL
LRM
GSGSG 1250 1225 - 1275
GSSG
Calibration
Substrate
Pad Size (microns) Calibration
Types
Supported
Footprint  

Recommended Pitch
(microns)

 

Acceptable Pitch
(microns)
CS-3-50 25 X 25 SOLT, LRM GSSG 50 45-60
CS-3-75 25 X 25 SOLT, LRM GSSG 75 65-85
CS-3-100 50 X 50 SOLT, LRM GSSG 100 85 - 115
CS-3-125 50 X 50 SOLT, LRM GSSG 125 110 - 140
CS-3-150 50 X 50 SOLT, LRM GSSG 150 135 -165
CS-3-175 50 X 50 SOLT, LRM GSSG 175 160 - 190
CS-3-200 50 X 50 SOLT, LRM GSSG 200 185 - 215
CS-3-250 100X 100 SOLT, LRM GSSG 250 200 - 300
CS-3-350 100 X 100 SOLT, LRM GSSG 350 300 - 400
CS-3-450 100 X 100 SOLT, LRM GSSG 450 400 - 500
CS-3-500 150 X 150 SOLT, LRM GSSG 500 425 - 525
CS-3-600 100 X 100 SOLT, LRM GSSG 600 550 - 625
CS-3-800 300 X 300 SOLT, LRM GSSG 800 600 - 1000
CS-3-1000 300 X 300 SOLT, LRM GSSG 1000 800 - 1075
CS-3-1250 300 X 300 SOLT, LRM GSSG 1250 1050 - 1325
SGS
Calibration
Substrate
Pad Size (microns) Calibration
Types
Supported
Footprint  

Recommended Pitch
(microns)

 

Acceptable Pitch
(microns)
CS-4-100 50 X 50 SOLT, LRM SGS 150 90 - 110
CS-4-150 50 X 50 SOLT, LRM SGS 150 140 - 160
CS-4-250 100 X 100 SOLT, LRM SGS 250 225 - 275
CS-4-300 100 X 100 SOLT, LRM SGS 300 275 - 325
CS-4-350 100 X 100 SOLT, LRM SGS 350 325 - 375