Ultra-Compact Band-Pass Filter at Low Frequency of Operation

IF 0.7 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC
B. Paul, S. Mridula
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引用次数: 0

Abstract

|An ultra-compact band-pass (cid:12)lter is presented in this paper. The (cid:12)lter is designed to operate in the medical implants communication service (MICS) band ranging from 401 MHz to 406 MHz. The (cid:12)lter is designed on a Rogers RT/duroid substrate with " r = 2 : 94 and tan (cid:14) = 0 : 0012. The overall size of the proposed (cid:12)lter is only 30 : 6 mm (cid:2) 18 : 5 mm (0.058 (cid:21) g (cid:2) 0 : 035 (cid:21) g ), making it suitable for compact, portable devices. An equivalent circuit model is also proposed for the analysis of the (cid:12)lter geometry. From the circuit model, it can be concluded that the (cid:12)lter exhibits the characteristics of a dual-composite right left-handed (D-CRLH) transmission line. This is also con(cid:12)rmed from the dispersion characteristics. The salient features of the proposed (cid:12)lter include ultra-compactness at low operating frequency, harmonic suppression of 3.7 times of the passband frequency, fractional bandwidth of 4.45%, and good roll-off rate of 297.6 dB/GHz in the lower stopband and 116.4 dB/GHz in the upper stopband.
超低工作频率的超紧凑带通滤波器
本文提出了一种超紧凑带通(cid:12)滤波器。该(cid:12)字母设计用于医疗植入物通信服务(MICS)频段范围从401兆赫到406兆赫。(cid:12)字母是在Rogers RT/duroid基板上设计的,r = 2:94, tan (cid:14) = 0.0012。所建议的(cid:12)字母的总体尺寸仅为30:6 mm (cid:2) 18.5 mm (0.058 (cid:21) g (cid:2) 0.035 (cid:21) g),使其适用于紧凑的便携式设备。本文还提出了一种等效电路模型,用于分析(cid:12)字母的几何形状。从电路模型可以得出(cid:12)的信号具有双复合左右传输线(D-CRLH)的特性。这也是由色散特性得出的。所提出的(cid:12)滤波器的显著特点包括:低工作频率下的超紧凑、3.7倍于通频带频率的谐波抑制、4.45%的分数带宽以及良好的下阻带滚降率(297.6 dB/GHz)和上阻带滚降率(116.4 dB/GHz)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Progress in Electromagnetics Research Letters
Progress in Electromagnetics Research Letters ENGINEERING, ELECTRICAL & ELECTRONIC-
CiteScore
2.20
自引率
11.10%
发文量
84
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