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首页> 外文期刊>Magnetics, IEEE Transactions on >Optimal Design of a Compact Filter for UWB Applications Using an Improved Particle Swarm Optimization
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Optimal Design of a Compact Filter for UWB Applications Using an Improved Particle Swarm Optimization

机译：使用改进的粒子群算法的超宽带应用紧凑型滤波器的优化设计

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摘要

This paper proposes an improved particle swarm optimization (PSO) process to design a high-performance compact ultrawideband (UWB) filter. The filter consists of one-cell composite right- and left-handed-transmission line (CRLH-TL) resonator, a stepped impedance (SI), and two spurlines. The one-cell CRLH-TL resonator has compact size but performs wide passband filtering. One SI and two spurlines are employed to reject both the harmonics outside the UWB and the wireless local area network (WLAN) (5.15–5.825 GHz) band. The improved PSO consists of the conventional PSO with the sensitivity analysis, and the process for checking the ripple. The improved PSO suppresses the ripple and accelerates the optimization. During the improved PSO, the objective function converges from the 116th iteration. In addition, the characteristic of the filter is optimized to get acceptable results. The proposed filter has the overall size of mm ( only, a 105% bandwidth for a return loss >10 dB, a flat insertion loss <1.4 dB, and stopbands on GHz and WLAN band. In particular, the ripple in the passband is minimized significantly by the improved PSO.
机译：本文提出了一种改进的粒子群优化（PSO）工艺，以设计高性能紧凑型超宽带（UWB）滤波器。该滤波器由一个单元的右手和左手传输线复合（CRLH-TL）谐振器，一个步进阻抗（SI）和两个支路组成。单电池CRLH-TL谐振器尺寸紧凑，但执行宽通带滤波。一个SI和两个支线用于同时抑制UWB和无线局域网（WLAN）（5.15-5.825 GHz）频带外的谐波。改进的PSO包括具有灵敏度分析的常规PSO和检查纹波的过程。改进的PSO抑制了纹波并加快了优化速度。在改进的PSO中，目标函数从第116次迭代开始收敛。另外，优化了滤波器的特性以获得可接受的结果。所提出的滤波器的总体尺寸为mm（仅，回波损耗> 10 dB的带宽为105％，插入损耗<1.4 dB的平坦度，以及GHz和WLAN频段的阻带。尤其是，通带的纹波可最小化改进的PSO显着改善了性能。

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