Synthesis of quarter wavelength side-coupled ring (QSCR) resonator applications to bandpass filters design

2008 ◽  
Vol 50 (2) ◽  
pp. 307-312 ◽  
Author(s):  
Mohd Khairul Mohd Salleh ◽  
Gaëtan Prigent ◽  
Olivier Pigaglio ◽  
Raymond Crampagne
Keyword(s):  
Bandpass Filters ◽  
Quarter Wavelength ◽  
Wavelength Side

Quarter-Wavelength Side-Coupled Ring Resonator for Bandpass Filters

2008 ◽  
Vol 56 (1) ◽  
pp. 156-162 ◽  
Author(s):  
Mohd Khairul Mohd Salleh ◽  
GaËtan Prigent ◽  
Olivier Pigaglio ◽  
Raymond Crampagne
Keyword(s):  
Ring Resonator ◽  
Bandpass Filters ◽  
Quarter Wavelength ◽  
Wavelength Side

COMPACT WILKINSON PASS-BAND FILTERING POWER DIVIDER BASED ON QUARTER-WAVELENGTH SIDE-COUPLED RING

2014 ◽  
Vol 23 (10) ◽  
pp. 1450135
Author(s):  
YONGLE WU ◽  
QIANG LIU ◽  
JUNYU SHEN ◽  
YUANAN LIU
Keyword(s):  
Low Cost ◽  
Single Layer ◽  
Power Divider ◽  
Pass Band ◽  
Fractional Bandwidth ◽  
Coupled Line ◽  
Quarter Wavelength ◽  
Wilkinson Power Divider ◽  
Isolation Performance ◽  
Wavelength Side

A Wilkinson power divider with improved bandpass filtering and high isolation performance is proposed. These characteristics are achieved by replacing the quarter-wavelength transmission line in the conventional coupled line Wilkinson power divider with quarter-wavelength side-coupled ring (QSCR). Additional features such as DC blocking between arbitrary two ports, single-layer via-less structure for low-cost fabrication and convenient integration (as only one isolation resistor required) are highlighted. A 2-GHz Wilkinson microstrip power divider with a fractional bandwidth of 4% has been fabricated and experimentally characterized. The consistency between simulated and measured results validates the effectiveness of our proposed design.

Varactor-based frequency-tuned microwave quarter-wavelength side-coupled ring resonator

2011 ◽  
Author(s):  
M. A. Abdul Latip ◽  
M. K. Mohd Salleh ◽  
Idnin Pasya ◽  
N. Ab Wahab
Keyword(s):  
Ring Resonator ◽  
Quarter Wavelength ◽  
Wavelength Side

Design of miniaturized substrate integrated coaxial line bandpass filters with quarter-wavelength spiral resonator

2016 ◽  
Vol 26 (6) ◽  
pp. 489-495
Author(s):  
Yun-Long Lu ◽  
Gao-Le Dai ◽  
Changzhou Hua ◽  
Gaoming Xu ◽  
Kai Li
Keyword(s):  
Coaxial Line ◽  
Bandpass Filters ◽  
Quarter Wavelength

scholarly journals High-Order Dual-Port Quasi-Absorptive Microstrip Coupled-Line Bandpass Filters

2020 ◽  
Author(s):  
Xiaohu Wu ◽  
Xiaoguang Liu ◽  
Yingsong Li
Keyword(s):  
Transmission Line ◽  
Detailed Analysis ◽  
Bandpass Filters ◽  
Design Concept ◽  
Coupled Line ◽  
Input And Output ◽  
Quarter Wavelength ◽  
Measurement Results ◽  
In Series ◽  
Simultaneous Input

In this article, we present the first demonstration of distributed and symmetrical all-band quasi-absorptive filters that can be designed to arbitrarily high orders. The proposed quasi-absorptive filter consists of a bandpass section (reflective-type coupled-line filter) and absorptive sections (a matched resistor in series with a shorted quarter-wavelength transmission line). Through a detailed analysis, we show that the absorptive sections not only eliminate out-of-band reflections but also determine the passband bandwidth (BW). As such, the bandpass section mainly determines the out-of-band roll-off and the order of the filter can be arbitrarily increased without affecting the filter BW by cascading more bandpass sections. A set of 2.45-GHz one-, two-, and three-pole quasi-absorptive microstrip bandpass filters are designed and measured. The filters show simultaneous input and output absorption across both the passband and the stopband. Measurement results agree very well with the simulation and validate the proposed design concept.

Compact microwave multi-band bandpass filters based on quarter-wavelength resonators

2015 ◽  
pp. 110-139
Author(s):  
Nikolina Janković ◽  
Vesna Crnojević-Bengin
Keyword(s):  
Bandpass Filters ◽  
Quarter Wavelength ◽  
Multi Band

MICROSTRIP BANDPASS FILTERS BASED ON INDUCTIVE-COUPLED STEPPED-IMPEDANCE QUARTER-WAVELENGTH RESONATORS

2014 ◽  
Vol 44 ◽  
pp. 101-106 ◽  
Author(s):  
Fei Cheng ◽  
Xianqi Lin ◽  
Yuan Jiang ◽  
Kaijun Song ◽  
Yong Fan
Keyword(s):  
Bandpass Filters ◽  
Quarter Wavelength

Quarter wavelength side-coupled ring filters for V-band applications

2008 ◽  
Author(s):  
Mohd Khairul Mohd Salleh ◽  
Gaetan Prigent ◽  
Raymond Crampagne ◽  
Patrick Pons
Keyword(s):  
V Band ◽  
Quarter Wavelength ◽  
Wavelength Side

Achievable bandwidth of a quarter wavelength side-coupled ring resonator

2009 ◽  
Author(s):  
Z. Ismail Khan ◽  
M. K. Mohd Salleh ◽  
Gaetan Prigent
Keyword(s):  
Ring Resonator ◽  
Quarter Wavelength ◽  
Wavelength Side

New Coupling Scheme for Microstrip Bandpass Filters With Quarter-Wavelength Resonators

2008 ◽  
Vol 56 (12) ◽  
pp. 2930-2935 ◽  
Author(s):  
Tsung-Nan Kuo ◽  
Shih-Cheng Lin ◽  
Chi-Hsueh Wang ◽  
Chun Hsiung Chen
Keyword(s):  
Bandpass Filters ◽  
Coupling Scheme ◽  
Quarter Wavelength
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