Patent ID: 11971451
Assignee: THE 13TH RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 6:
7. A method comprising:
constructing an on-wafer calibration piece model set, the on-wafer calibration piece model set comprising one or more on-wafer calibration piece models used in a Terahertz frequency band, wherein each of the one or more on-wafer calibration piece models has a corresponding on-wafer calibration piece;
selecting an on-wafer calibration piece model from the on-wafer calibration piece model set;
in the Terahertz frequency band, using a multi-thread Thru-Reflect-Line (TRL) calibration method to calibrate an on-wafer S parameter measurement system and obtaining a calibrated on-wafer S parameter measurement system, using the calibrated on-wafer S Parameter measurement system to measure the on-wafer calibration piece of the selected on-wafer calibration piece model, and obtaining an S parameter of the on-wafer calibration piece;
calculating an admittance of the on-wafer calibration piece according to the S parameter of the on-wafer calibration piece;
determining, according to the on-wafer calibration piece model, an admittance formula corresponding to the on-wafer calibration piece model;
calculating, according to the admittance and the admittance formula, a target parameter in the on-wafer calibration piece model, the target parameter representing crosstalk of the on-wafer calibration piece of the selected on-wafer calibration piece model; and
calibrating, using the on-wafer calibration piece of the selected on-wafer calibration piece model having the target parameter, an on-wafer S parameter measurement system to be calibrated; and
wherein constructing the on-wafer calibration piece model set comprises:
connecting, in parallel, two elements that represent the crosstalk of the on-wafer calibration piece to two ends of an end surface in an original calibration piece model, and wherein:
the on-wafer calibration piece model set comprises a second load calibration piece model, a second open circuit calibration piece model, and a second short circuit calibration piece model;
the corresponding on-wafer calibration piece of the second load calibration piece model is a second load calibration piece;
the corresponding on-wafer calibration piece of the second open circuit calibration piece model is a second open circuit calibration piece;
the corresponding on-wafer calibration piece of the second short circuit calibration piece model is a second short circuit calibration piece;
the second load calibration piece model comprises a load calibration piece inductor, a load calibration piece direct-current resistor, a fourth resistor and a fourth capacitor, wherein both the fourth resistor and the fourth capacitor represent crosstalk of the second load calibration piece; a first end of the load calibration piece inductor is connected to a first end of the fourth resistor and a first end of the fourth capacitor, to form a first end of a single port of the second load calibration piece model; and a second end of the load calibration piece inductor is connected to a first end of the load calibration piece direct-current resistor, a second end of the load calibration piece direct-current resistor is connected to a second end of the fourth resistor and a second end of the fourth capacitor, to form a second end of the single port of the second load calibration piece model;
the second open circuit calibration piece model comprises an open circuit calibration piece capacitor, a fifth resistor and a fifth capacitor, wherein both the fifth resistor and the fifth capacitor represent crosstalk of the second open circuit calibration piece; a first end of the open circuit calibration piece capacitor is connected to a first end of the fifth resistor and a first end of the fifth capacitor, to form a first end of a single port of the second open circuit calibration piece model; and a second end of the open circuit calibration piece capacitor is connected to a second end of the fifth resistor and a second end of the fifth capacitor, to form a second end of the single port of the second open circuit calibration piece model; and
the second short circuit calibration piece model comprises a short circuit calibration piece inductor, a sixth resistor and a sixth capacitor, wherein both the sixth resistor and the sixth capacitor represent crosstalk of the second short circuit calibration piece; a first end of the short circuit calibration piece inductor is connected to a first end of the sixth resistor and a first end of the sixth capacitor, to form a first end of a single port of the second short circuit calibration piece model; and a second end of the short circuit calibration piece inductor is connected to a second end of the sixth resistor and a second end of the sixth capacitor, to form a second end of the single port of the second short circuit calibration piece model.