Wideband bandstop defected ground structure filter with enhanced common-mode suppression using split ring

doi:10.1016/S1005-8885(15)60684-7

中国邮电高校学报(英文) ›› 2015, Vol. 22 ›› Issue (5): 80-83.doi: 10.1016/S1005-8885(15)60684-7

Wideband bandstop defected ground structure filter with enhanced common-mode suppression using split ring

姚引娣¹,曾志斌²

1. School of Communication & Information, Xi’an University of Posts & Telecommunications, Xi'an 710121, China 2. School of Microelectronics, Xidian University, Xi’an 710071, China

收稿日期:2015-04-01 修回日期:2015-05-31 出版日期:2015-10-30 发布日期:2015-10-30
通讯作者: 曾志斌 E-mail:zbzeng@163.com
基金资助:
This work was supported by the National Science and Technology Major Project of the Ministry of Science and Technology of China (2012ZX03001018-001), and the Fundamental Research Funds for the Central Universities of China (K5051125007).

Wideband bandstop defected ground structure filter with enhanced common-mode suppression using split ring

Yin-di YAOZhibin ZENG²

1. School of Communication & Information, Xi’an University of Posts & Telecommunications, Xi'an 710121, China 2. School of Microelectronics, Xidian University, Xi’an 710071, China

Received:2015-04-01 Revised:2015-05-31 Online:2015-10-30 Published:2015-10-30
Contact: Zhibin ZENG E-mail:zbzeng@163.com
Supported by:
This work was supported by the National Science and Technology Major Project of the Ministry of Science and Technology of China (2012ZX03001018-001), and the Fundamental Research Funds for the Central Universities of China (K5051125007).

摘要/Abstract

摘要： An effective method to broaden the rejection bandwidth of dump-shaped defected ground structure (DGS) filter design is proposed in the paper. One traditional dumbbell-shaped DGS is split by using one split ring, and reconstructed into two different compact DGSs. The distance between both of the DGSs is so close that there exists mutual inductance, which can be utilized to broaden the rejection bandwidth effectively. The effect of different parameters of the split ring on the rejection bandwidth and depth of the filter is analyzed. Simulated results demonstrate that, with the same area of 5.5mm by 10 mm, rejection bandwidth of the proposed filter is from 4.4 GHz to 10.5 GHz for the common-mode noise (CM) while that of the traditional dumbbell-shaped DGS is from 5.3 GHz to 7.3 GHz. Compared to other schematics adopting multiple DGS to broaden bandwidth, it can broaden the bandwidth by dividing the existed DGS into multiple parts and reconstructing a new filter. The experimental results show good agreement with simulated results.

关键词: defected ground structure, common-mode filter, differential signals, insertion loss

Abstract: An effective method to broaden the rejection bandwidth of dump-shaped defected ground structure (DGS) filter design is proposed in the paper. One traditional dumbbell-shaped DGS is split by using one split ring, and reconstructed into two different compact DGSs. The distance between both of the DGSs is so close that there exists mutual inductance, which can be utilized to broaden the rejection bandwidth effectively. The effect of different parameters of the split ring on the rejection bandwidth and depth of the filter is analyzed. Simulated results demonstrate that, with the same area of 5.5mm by 10 mm, rejection bandwidth of the proposed filter is from 4.4 GHz to 10.5 GHz for the common-mode noise (CM) while that of the traditional dumbbell-shaped DGS is from 5.3 GHz to 7.3 GHz. Compared to other schematics adopting multiple DGS to broaden bandwidth, it can broaden the bandwidth by dividing the existed DGS into multiple parts and reconstructing a new filter. The experimental results show good agreement with simulated results.

Key words: defected ground structure, common-mode filter, differential signals, insertion loss

Yin-di YAO Zhibin ZENG. Wideband bandstop defected ground structure filter with enhanced common-mode suppression using split ring[J]. Acta Metallurgica Sinica(English letters), 2015, 22(5): 80-83.

参考文献

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Wideband bandstop defected ground structure filter with enhanced common-mode suppression using split ring

Wideband bandstop defected ground structure filter with enhanced common-mode suppression using split ring

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