| 摘要 |
A method and apparatus for passing a high frequency signal across an isolation barrier while rejecting low frequency common mode interference is provided. A high frequency signal is coupled across an isolation barrier. A circuit comprising an element having an impedance that is a function of frequency rejects low frequency common mode interference. The high frequency signal is provided as an output. The present invention is useful, for example, for isolating telephone apparatus, such as a telephone modem, from a telephone line.
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