In addition, an antenna section protective indication for indicating an information writing area other than the area on an antenna coil is provided on a cartridge label. 另外,磁带盒标签上具有避开天线线圈的把信息记述区域指示出来的天线部保护显示。
According to the antenna theory, an excitation coil similar to a helix was modeled as a stack of electric and magnetic sources. 根据天线理论,将激励线圈近似为螺线管,模拟为一系列电磁源。
It involves the theory of the loop antenna, for example, field strength, coil inductance calculation, and the resonant circuits. 首先论述了线圈天线所涉及到的相关理论。例如场强、线圈的电感计算、谐振电路设计等。