𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Harmonic-suppressing bandpass filter based on coupled triangular open-loop stepped-impedance resonators

✍ Scribed by Kuo-Sheng Chin; Deng-Jun Chen

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
621 KB
Volume
52
Category
Article
ISSN
0895-2477

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

This work develops two harmonic‐suppressing bandpass filters. One has a direct‐coupled‐resonator structure and the other has a cross‐coupled‐resonator structure. The triangular open‐loop stepped‐impedance resonator is used to synthesize filters because it can create two tunable transmission zeros to suppress multi‐spurious responses in the upper stopband. The coupling coefficients of typical coupled pairs of resonators and the external quality factors of two basic feeding configurations are exploited in filter synthesis. A three‐pole Chebyshev filter and a four‐pole selective‐response filter are designed and fabricated herein. The first spurious peaks of these two experimental filters occur at five times and four times the operating frequency, respectively. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 187–191, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24866

📜 SIMILAR VOLUMES

Microstrip bandpass filters using steppe
Microstrip bandpass filters using stepped-impedance ring resonators for harmonic suppression
✍ JiaLin Li; JianXin Chen; JianPeng Wang; Wei Shao; LiangJin Xue 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 109 KB

This paper proposes a novel resonant element using a slotted ring resonator in conjunction with the stepped impedance resonator (SIR). With this structure, the basic resonant element exhibits the first spurious harmonic close to 3 f 0 . By cascading the two basic units, a compact bandpass filter (BP

Microstrip bandpass filter design using
Microstrip bandpass filter design using triangular open loop resonators with improved cross-coupled structure
✍ Haiwen Liu; Mingtao Tan 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 165 KB

## Abstract In this letter, a highly selective microstrip bandpass filter using triangular open‐loop resonators with improved cross‐coupled structure is designed, fabricated, and measured. The new cross coupling structure is implemented by inserting two L‐shaped stubs into the triangular open‐loop

Microstrip stepped-impedance resonator b
Microstrip stepped-impedance resonator bandpass filter with over-coupling structure for suppression of harmonic response
✍ Min-Hung Weng; Chi-Hsiang Pan; Chih-Wei Shao; Hung-Wei Wu; Tsung-Hui Huang 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 92 KB

## Abstract This paper describes the microstrip stepped‐impedance resonator (SIR) bandpass filter with an over‐coupling structure for the suppression of spurious response at twice the center frequency (2f~__0__~). In addition, the tapped I/O is used in the filter to create the extra transmission ze

Bandpass filter of forked step impedance
Bandpass filter of forked step impedance resonator with harmonic suppression in diplexer applications
✍ Min-Hua Ho; Chung-I G. Hsu; Chen-Mao Rao 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 227 KB

## Abstract A novel two‐stage forked stepped‐impedance‐resonator (FSIR) bandpass filter design is presented. The FSIR originated from an SIR has its both open ends split as a fork structure. A tunable zero from the coupled lines is created to suppress the second harmonic of the resonator. Two addit

Compact dual-band bandpass filter based
Compact dual-band bandpass filter based on stepped impedance resonators and T-shaped line
✍ Wenjie Feng; Quan Xue; Wenquan Che 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 412 KB

## Abstract A compact dual‐band bandpass filter (BPF) realized with stepped impedance resonators (SIR) and T‐shaped line is proposed in this article. By appropriately selecting the impedance ratio of the SIR, a passband around at 5.4 GHz can be achieved by the second harmonic frequency of the SIR.

A compact bandpass filter using open-loo
A compact bandpass filter using open-loop and C-SCMRC resonators with harmonic suppression
✍ Jian-Zhong Gu; Chuang Wang; Xiao-Wei Sun 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 142 KB

## Abstract A novel compact open‐loop resonator bandpass filter is proposed to suppress the spurious passband using a compensated spiral compact microstrip resonant cell (C‐SCMRC). Due to the inherently compact and stopband characteristics of the C‐SCMRC, the proposed filters shows a better spuriou