Patent ID: 11898840
Assignee: TOKYO ELECTRON LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 10:
11. The measuring device according to claim 3, wherein a plurality of receiving antennas is provided as the at least one receiving antenna,
the plurality of receiving antennas are arranged along a direction component of a transmission direction of the transmission wave which is parallel to the substrate,
the reception demodulation circuit is configured to generate a plurality of signals that represents intensities of the plurality of reception waves received by the plurality of receiving antennas, respectively,
the calculator is configured to obtain a plurality of delay times of the plurality of reception waves, respectively, with respect to the transmission wave from the plurality of signals, and obtain the thickness from the plurality of delay times, and
the transmission wave is a millimeter wave.