When measuring the charge on a device such as a capacitor, it's important to disable the zero check of the electrometer first, and then connect the capacitor to the high impedance input terminal.
The architecture of zero IF receivers that has the advantage of low-cost, low power dissipation and small from factor is gaining interest while developing OFDM terminal.
为了研制低价格、低功耗、小尺寸的OFDM终端，零中频的接收机结构越来越倍受关注。
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By equating the determinant of the steady-state homogeneous equation to zero, the terminal capacitances for maintaining constant voltage are computed.