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The tetrapolar circuit method has been used to detect physiological events as changes in electrical impedance. However, it is still difficult to obtain more meaningful information of local events because of the expanse of current distribution. In order to measure the local impedance change in living tissue, the authors propose a tetrapolar circuit method using a magnetic field. In this method, an...
The development of a system which provides the power-constant loci on a Smith chart automatically is presented. The system consists of a couple of ferrite phase shifters, ended with PIN diodes, and a network analyzer.
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