Choubey Chandan Kumar, Kumar Sumit, Pippal Sanjeev Kumar
Symbiosis Institute of Technology, Pune Campus, Symbiosis International (Deemed University), Pune, India.
Department of Computer Science Engineering, Sharda School of Engineering and Technology, Sharda University, Greater Noida, Uttar Pradesh, India.
MethodsX. 2024 Feb 22;12:102619. doi: 10.1016/j.mex.2024.102619. eCollection 2024 Jun.
An analog comb filter is implemented by linking multiple VDCC-based notch filters in a cascading fashion (N in total), eliminating N different pole frequencies. This study focuses on suppressing a fundamental frequency of power-line interference of 50 Hz and its consecutive three odd harmonics at 150 Hz, 250 Hz, and 350 Hz. One significant advantage of this comb filter is the independent control over filters' parameters like quality factor and pole frequency. Additionally, these filters can be electronically tuned by adjusting the transconductance gain of VDCC. The suggested notch filter configuration involves 2 capacitors, 2 resistors, and 1 VDCC element. Extensive simulations were conducted using PSPICE simulator software to validate the effectiveness of these filters. The basic building block, VDCC, is designed and implemented in the simulation using integrated circuits MAX435 and AD844.•Design uses a VDCC-based high Q notch filter as the active building block.•The filter employs fewer active and passive components.•Simulated results using commercially available ICs, MAX435 and AD844, confirm the filter's practical utility.
模拟梳状滤波器是通过将多个基于电压控制电流源（VDCC）的陷波滤波器以级联方式连接（总共N个）来实现的，可消除N个不同的极点频率。本研究着重于抑制50Hz的电力线干扰基频及其在150Hz、250Hz和350Hz的连续三个奇次谐波。这种梳状滤波器的一个显著优点是可以独立控制滤波器的参数，如品质因数和极点频率。此外，这些滤波器可以通过调整VDCC的跨导增益进行电子调谐。建议的陷波滤波器配置包括2个电容器、2个电阻器和1个VDCC元件。使用PSPICE模拟器软件进行了广泛的仿真，以验证这些滤波器的有效性。基本构建模块VDCC在仿真中使用集成电路MAX435和AD844进行设计和实现。•设计使用基于VDCC的高Q值陷波滤波器作为有源构建模块。•该滤波器使用的有源和无源元件较少。•使用市售集成电路MAX435和AD844的仿真结果证实了该滤波器的实际实用性。
