知识与财富的链接
实现了一种全集成可变带宽中频宽带低通滤波器，讨论分析了跨导放大器-电容（OTAc）连续时间型滤波器的结构、设计和具体实现，使用外部可编程电路对所设计滤波器带宽进行控制，并利用ADS软件进行电路设计和仿真验证。仿真结果表明，该滤波器带宽的可调范围为1～26MHz，阻带抑制率大于35dB，带内波纹小于0．5dB，采用1．8V电源，TSMC 0．18μm CMOS工艺库仿真，功耗小于21mw，频响曲线接近理想状态。
A fully integrated wideband variable-bandwidth IF low-pass filter is presented. The structure, design and implementation of the continuous-time OTA-C filter are discussed and analyzed. The external circuit design and simulation are used by the software of ADS. The simulation results show that the filter tuning range of-3 dB bandwidth of 1 MHz - 26 MHz, stop-band rejection rate of greater than 35 dB, and the pass-band ripple less than 0.5 dB,with 2.8 V power supply, TSMC 0.18 /tin CMOS technology library of simulation, power consumption is less than 21 mW, frequency response curve close to the ideal state.
