✦ LIBER ✦

Coplanar waveguide (CPW) defected ground structure (DGS) for bandpass filter application

✍ Scribed by Man-Long Her; Yu-Zhen Wang; Chih-Min Chang; Kun-Ying Lin

Publisher: John Wiley and Sons
Year: 2004
Tongue: English
Weight: 188 KB
Volume: 42
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.20294

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

In this paper, we design and implement a coplanar waveguide (CPW) bandpass filter utilizing defected ground structure (DGS) technology. The CPW DGS technology, which only needs one or a series connection of a few cells to exhibit the bandgap characteristics, can provide the attenuation poles in the upper and lower bands to improve the rolloff characteristics of the bandpass filter. Moreover, the equivalent lump values of the CPW DGS are also calculated and good agreement between EM simulation and numerical calculation is obtained. The measured results show that the improved selectivity of upper and lower bands are 10.7 and 46.5 dB/GHz, respectively. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 42: 331–334, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20294

📜 SIMILAR VOLUMES

Slow-wave CPW resonator with defected gr

Slow-wave CPW resonator with defected ground structure (DGS) for filter applications

✍ Özlem Akgün; Adnan Görür 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 165 KB

## Abstract Novel slow‐wave CPW resonators with defected ground structures (DGSs) in a rectangularly spaced and open‐loop shapes are investigated. These structures have an extremely compact size. The simulations and experimental results verify that these structures provide a size reduction of about

Controllable reverse double U-shaped def

Controllable reverse double U-shaped defected ground structure for bandpass filter with improved out-of-band performances

✍ Wen-Jeng Lin; Lih-Shan Chen; Mau-Phon Houng 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 385 KB

## Abstract This letter presents a bandpass filter with low insertion loss and suppression of spurious resonance, which is implemented by using the controllable reverse double U‐shaped defected ground structure (RDU‐DGS) cells. The proposed RDU‐DGS cells are with the advantage of good controllabili

Novel defected ground structure element

Novel defected ground structure element with triple transmission zeros and its application for multispurious suppression of microstrip parallel-coupled-line bandpass filter

✍ Sio-Weng Ting; Kam-Weng Tam; Rui Martins 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 379 KB 👁 1 views

## Abstract A novel compact defected ground structure (DGS) element with triple transmission zeros is proposed. The zeros can be tuned individually by the DGS geometry and the overall etched area is kept as compact as that of the conventional structure with single zero. The traditional microstrip p

Global modeling of a periodic coplanar w

Global modeling of a periodic coplanar waveguide structure for filter applications using an efficient iterative procedure

✍ N. Sboui; A. Gharsallah; A. Gharbi; H. Baudrand 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 188 KB

## Abstract A global modelizing of periodic structures for coplanar waveguide filter is presented. These structures offer a very low insertion loss; thus, they can be exploited to achieve a high performance in miniature microwave filters. The analysis is achieved by using a new iterative method bas

Application of a defected ground structu

Application of a defected ground structure and alternative transmission line for designing a quasi-elliptic lowpass filter and reduction of insertion loss

✍ Tamasi Moyra; Kumar Parui; Santanu Das 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 367 KB

A new defected ground structure (DGS) consisting of two square ring slots connects with a rectangular ring slot by two thin transverse slots under a microstrip line is proposed. In the frequency characteristics of proposed unit pattern, an attenuation zero is observed close to the attenuation pole.