Patent ID: 11906466
Assignee: TOKYO ELECTRON LIMITED
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 3:
4. A measurement system comprising:
a semiconductor manufacturing apparatus including a chamber;
a jig in which a sensor is installed, the sensor being provided with a plurality of sensor devices, each of the plurality of sensor devices having a resonance frequency different from each other and the jig being capable of performing wireless communication;
a reader antenna; and
an information processing apparatus; wherein the measurement system is configured to perform processes of
a) receiving, by the reader antenna, first measurement data including a signal of a resonance frequency of a resonant wave generated in the chamber in response to an electromagnetic wave transmitted from the reader antenna to the chamber while the jig is not placed in the chamber;
b) acquiring, by the information processing apparatus, the first measurement data received by the reader antenna as reference data;
c) receiving, by the reader antenna, second measurement data including the signal of the resonance frequency of the resonant wave and including a signal of a resonance frequency of the sensor installed in the jig in response to the electromagnetic wave transmitted from the reader antenna to the chamber; while the jig is placed in the chamber;
d) acquiring, by the information processing apparatus, the second measurement data received by the reader antenna; and
e) subtracting, by the information processing apparatus, the reference data from the second measurement data acquired in d);

wherein the second measurement data acquired in c) includes signals of the resonance frequencies of the plurality of sensor devices; and
a temperature at each of the plurality of sensor devices is estimated based on the resonance frequencies of the plurality of sensor devices.