𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Design of compact dual- and tri-band bandpass filters using λ/4 and λ/2 resonators

✍ Scribed by Fu-Chang Chen; Qing-Xin Chu; Zhi-Hong Tu

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
241 KB
Volume
51
Category
Article
ISSN
0895-2477

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

This article presents a novel approach for designing dual‐ and tri‐band bandpass filters with independently controlled center frequencies and bandwidths. λ/4 and λ/2 resonators are used to obtain dual‐ and tri‐band responses. λ/4 resonators are designed to operate at the lower passband(s) and λ/2 resonators are designed to operate at the higher passband. The bandwidth of each passband can be tuned independently by adjusting the coupling gap. To verify the presented concept, two experimental examples of filters have been designed and fabricated and good agreements are shown between the simulation and the measurement. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 638–641, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24111

📜 SIMILAR VOLUMES

Design of compact dual-band bandpass fil
Design of compact dual-band bandpass filters using λ/2 and combined λ/4 stepped-impedance resonators
✍ Ching-Her Lee; Yi-Huan Hsieh; Min-Hua Ho 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 208 KB

## Abstract This paper presents a compact dual‐band bandpass filter (BPF) that consists of a pair of L‐shape half‐wavelength (λ/2) stepped‐impedance resonators (SIRs) and an inverted Z‐shape resonator. The latter is actually a combined structure of two λ/4 SIRs along with a magnetic coupling in bet

Design of compact microstrip dual-band b
Design of compact microstrip dual-band bandpass filters with λ/4 stepped-impedance resonators
✍ He-Kai Jhuang; Ching-Her Lee; Chung-I. G. Hsu 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 286 KB

## Abstract This article presents a compact microstrip bandpass filter (BPF) design for the 2.45 and 5.25 GHz wireless local‐area network (WLAN) applications. U‐shaped quarter‐wavelength stepped‐impedance resonators (λ/4 SIRs), for which the circuit size is small and the second resonant frequency c

Design of compact dual-band bandpass fil
Design of compact dual-band bandpass filter using short stub loaded resonator
✍ Fu-Chang Chen; Qing-Xin Chu; Zhi-Hong Tu 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 275 KB

## Abstract Compact dual‐band bandpass filter using short stub loaded resonators is presented in this letter, the proposed resonator possesses the advantage that its center frequency of the even mode can be flexibly controlled, whereas that of the odd‐mode is fixed. A dual‐band filter using pseudo‐

Design of a compact dual-band bandpass f
Design of a compact dual-band bandpass filter using trisection stepped impedance resonators
✍ Sheng-Hsiung Chang; Min-Hang Weng; Hon Kuan 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 256 KB

## Abstract We propose a compact dual band bandpass filter (BPF) using trisection stepped impedance resonators (SIRs). By appropriately selecting the impedance ratio (K) and length ratio (α) of the SIR, the harmonic frequencies can be tuned for generating the dual‐passband response. The BPF has goo

Design and implementation of microwave d
Design and implementation of microwave dual-band bandpass filters using microstrip composite resonators
✍ Zhewang Ma; Taichi Shimizu; Yoshio Kobayashi; Tetsuo Anada; Gen Hagiwara 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 357 KB

## Abstract In this article, a novel type of dual‐band bandpass filter (DBBPF) is proposed by using microstrip composite resonators, and its design method is developed based on the lumped‐element equivalent circuit of the filter. Both the midband frequencies and the passband widths of the dual band

Compact dual-band filter design using cr
Compact dual-band filter design using crossly coupled λ/4 SIRs embedded with spur-line for WLAN applications
✍ Pow-Wen Chen; Min-Hua Ho; Wanchu Hong 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 202 KB

## Abstract This article presents a compact dual‐band bandpass filter (BPF) design using λ/4 stepped impedance resonators (SIRs) embedded with spur‐line for the WLAN applications. The filter covers both the operating frequencies of 2.45 GHz and 5.2–5.8 GHz. The crossly coupled mechanism is used in