| 摘要 |
A signal switching circuit has first to fourth diode pairs each comprising two series-connected diodes disposed respectively between a first input terminal and a first output terminal, between a second input terminal and the first output terminal, between the first input terminal and the second output terminal, and between the second input terminal and the second output terminal, and first to fourth capacitor circuits connected respectively between diode-to-diode connection points in the diode pairs and the ground. The first or second diode pair is rendered conductive in an alternative manner. Likewise, the third or fourth diode pair is rendered conductive in an alternative manner. A low pass filter for passing therethrough the corresponding first or second signal uses residual inductance in each of the diode pairs thus rendered conductive and the associated capacitor circuit.
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