发明名称 |
High frequency impedance measuring apparatus using two bidirectional couplers |
摘要 |
High frequency impedance measurements using a reflectometer measuring the impedance of a body disposed between two electrodes, by means of two bidirectional couplers connected by controlled variable attenuators to a mixer circuit determining the modulus and the phase of the coefficient of the reflection due to the load, independently of the power level of the generator.
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申请公布号 |
US4780661(A) |
申请公布日期 |
1988.10.25 |
申请号 |
US19860891115 |
申请日期 |
1986.07.31 |
申请人 |
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE |
发明人 |
BOLOMEY, JEAN-CHARLES;SOLAL, DANIEL |
分类号 |
G01R27/06;(IPC1-7):G01R27/06;A61B5/05;G01N22/00 |
主分类号 |
G01R27/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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