preceding circuit 中文意思是什麼
preceding circuit
解釋
向前接續電路-
Accoridng to the target and preceding analyses, we select ad9850 for dds chip, pe3236 for pll chip, and mcu pic16f874 for loading control word and realizing control function. afterward, we design and simulate the lc filter, microstrip low - pass filter and coupler, then implement the frequency synthesis. finally , the circuit is tested and the target is obtained
根據指標的要求和上面的分析, dds晶元採用ad9850 , pll晶元採用pe3236 ,控制字的載入及控制功能的實現由單片機pic16f874來實現,並對其中的lc濾波器、微帶低通濾波器、耦合器進行了設計和模擬,最後完成了一個頻率合成器。
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