Calibration Types and Characteristics

The table shows different types of calibrations and features of each method.

Calibration Method

Standard (s) Used

Corrected Error Factor

Measurement Parameters

Characteristics

No calibration

None

None

All parameters

  • Low accuracy

  • Calibration not required

Response Calibration

  • OPEN or SHORT

  • LOAD
    (Optional)

Following 2 error terms:

S11(Reflection characteristics at 1 port)

T/R (reflection setting)

 

  • Medium-level accuracy

  • Quick calibration

  • Isolation calibration improves the accuracy in a reflection measurement of a DUT with high return loss

  • THRU

  • LOAD
    (Optional)

Following 2 error terms:

S21
(1 direction transmission characteristics at 2 ports)

T/R (Transmission setting)

  • Medium-level accuracy

  • Quick calibration

  • Isolation calibration improves the accuracy in a transmission measurement of a device with high insertion loss

1-Port Calibration

ECal module (2-port/4-port)

Following 3 error terms:

  • Directivity (Ed)

  • Source Match (Es)

  • Reflection Tracking (Er)

S11
(Reflection characteristics at 1 port)

T/R

  • 1-port measurement with the highest degree of accuracy

  • Quick calibration with low chance of operator error

  • OPEN

  • SHORT

  • LOAD

  • Highly accurate 1-port measurement

Enhanced Response Calibration

Ecal module (2-port)

Following 5 error terms:

  • Directivity (Ed1)

  • Isolation (Ex21)

  • Source Match (Es1)

  • Transmission Tracking (Et21)

  • Reflection Tracking (Er1)

S11, S21 (1 direction transmission/Reflection characteristics at 2 ports)

  • Highly accurate 2-port measurement (higher than response calibration)

  • Quick calibration with low chance of operator error

  • OPEN

  • SHORT

  • LOAD

  • THRU

  • Highly accurate 2-port measurement (higher than response calibration)

Full 2-Port Calibration

ECal module (2-port/4-port)

Following 12 error terms:

  • Directivity (Ed1,Ed2)

  • Isolation (Ex21,Ex12)

  • Source Match (Es1,Es2)

  • Load Match (El12,El21)

  • Transmission Tracking (Et21,Et12)

  • Reflection Tracking (Er1,Er2)

S11,S21,S12,S22
(All S-parameters at 2 ports)

  • OPEN

  • SHORT

  • LOAD

  • THRU