Development of electromagnetic absorption with recycle board

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The measurement method of electromagnetic wave absorption in the VHF band(80-230MHz) and the quasi microwave band(1700-2600MHz) has developed by the parallel wire line method. In this paper, the measurement method of the transmitted coefficient and the reflection coefficient is developed by the parallel wire line in the UHF band(400-800MHz). These coefficients are calculated from the standing wave ratio on the parallel wire lines. The transmitted coefficient is measured by the phase shifter. The accuracy of the phase modulation is measured by using a network analyzer.