Frequency characteristic measurement apparatus

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United States of America Patent

PATENT NO 11892534
APP PUB NO 20220317226A1
SERIAL NO

17655880

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Abstract

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A frequency characteristic measurement apparatus includes a calibration circuit configured to perform a SOLT calibration on cable end surfaces, a first measurement circuit measuring S-parameters of a first substrate provided with a DUT, after the SOLT calibration by the calibration circuit, a second measurement circuit measuring S-parameters of a second substrate after the SOLT calibration by the calibration circuit, and an extraction circuit performing a vector operation of a measurement result of the first measurement circuit and a measurement result of the second measurement circuit to extract S-parameters of the DUT. The extraction circuit assumes that a reflection of each of first second fixtures obtained by virtually dividing the second substrate into two parts at the center, on an end surface of the second substrate is equal to or smaller than a reflection on an end surface of the second substrate without the virtual division at the center.

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Patent Owner(s)

Patent OwnerAddress
ROHM CO LTDKYOTO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hamachi, Kenji Kyoto, JP 10 28

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