✦ LIBER ✦

Miniaturization of wideband branch-line couplers using fractal-shaped geometry

✍ Scribed by Wen-Ling Chen; Guang-Ming Wang; Chen-Xin Zhang

Publisher: John Wiley and Sons
Year: 2009
Tongue: English
Weight: 249 KB
Volume: 51
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.24002

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

In this article, we present a technique to miniaturize the cascaded wideband branch‐line couplers using fractal‐shaped geometry. As an example, four‐branch couplers operated at 2.0 GHz employing Koch fractal shapes of different iteration orders have been designed successfully. By meandering the branch lines in accordance with the structures of the Koch curves, the fractal‐shaped couplers of first and second iteration orders achieved 50.4% and 72.7% size reduction, respectively, with no major effect to overall performances. The technique was verified by the measurement results. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 26–29, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24002

📜 SIMILAR VOLUMES

Design of novel miniaturized fractal-sha

Design of novel miniaturized fractal-shaped branch-line couplers

✍ Wen-Ling Chen; Guang-Ming Wang 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 123 KB

## Abstract Although miniaturized and fractal‐shaped branch‐line couplers have been reported by many researchers, their operating bandwidth are narrowed and shifted greatly, thus the application of these techniques were limited. In this article, we presented an exact design technique to obtain comp

A miniaturized millimeter-wave branch-li

A miniaturized millimeter-wave branch-line coupler using nonsymmetrical T-shape structure with quasi-stepped impedance resonator

✍ Miin-Shyue Shiau; Shih-Yi Yuan; Shry-Sann Liao; Pou-Tou Sun; Don-Gey Liu 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 237 KB

## Abstract In this study, a novel ka‐band compact‐size branch‐line coupler was proposed. The coupler was designed and fabricated with WIN Semiconductors 0.15‐μm pseudomorphic high electron‐mobility transistor process. The design method, simulation data, and measurement results of the proposed coup

Analysis of miniaturized 3 dB branch-lin

Analysis of miniaturized 3 dB branch-line hybrid couplers using distributed MIM capacitors

✍ Sung-Chan Jung; Renato Negra; Fadhel M. Ghannouchi 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 863 KB

The far-field radiation characteristics of the proposed antenna were also investigated. As can be seen in Figure 5, the measured results show that the radiation patterns (co-polar and cross-polar patterns) at 1.9 GHz, 2.1 GHz, and 2.3 GHz operating frequencies show an approximately similar general p