6# PowerAnts
谢谢蚂蚁，资料上也是写带通滤波器。下图是频率响应。
资料中这样描述这个带通滤波器：
A quick thrown-together bandpass filter is shown in the schematic. The base frequency is not in the middle of the filter response , but the filter suffices because we only care about eliminating DC and the higher harmonics, and attenuating the generated frequency to match the original chirp. At 276khz, the filter attenuates the fundamental frequency to 186mVp-p, and the 3rd harmonic is down at 24mVp-p which is sufficient for my purposes.
再请问一下，这个带通滤波器的输出电流是怎么样的？因为最终目的是产生280kHz的电流，是不是把280kHz的PWM波通过滤波器偶合成280kHz的电流？
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楼主
