Compact semilumped bandstop resonators using the capacitively loaded parallel‐coupled microstrip line

Lee, Ju Gab; Lee, Wu Seong; Ryu, Jae Jong; Moon, Yeon Kwan; Jang, Joong Ho; Kim, Ha Chul; Choi, Hyun Chul

doi:10.1002/mop.22135

Cited by 4 publications

(3 citation statements)

References 8 publications

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“…Up to now, the model for two-coupled symmetrical microstrip lines has been established and applied in parallel-coupled-microstrip filters [3][4][5][6][7][8][9]. In this article, the authors propose a general frequency-domain quasi-TEM approach for lossless-coupled-microstrip lines.…”

Section: Introductionmentioning

confidence: 99%

“…For example, parallel-coupled-microstrip filters have for decades been widely used in the RF front end of microwave and wireless communication systems. An Nth-order parallel-coupled line filter consists of a cascade of N þ 1 coupled stages [3][4][5][6][7][8][9]. Recently, the research on dual-mode microstrip filters has increased, since a single dual-mode resonator can act as a doubly tuned resonance circuit, and hence the number of resonators required for a prescribed filter degree can be reduced, resulting in a more compact filter structure.…”

Section: Introductionmentioning

confidence: 99%

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Quasi-TEM approach of coupled-microstrip lines and its application to the analysis of microstrip filters

Xiao

Norgren

2011

Int J RF and Microwave Comp Aid Eng

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In this article, the quasi-TEM approach is successfully used to analyze coupled-microstrip lines of finite length, which are usually used for the coupling between the source/load and resonators in microstrip filters. First, an orthogonal expansion method is used to extract the per-length inductance and capacitance matrices. The authors then obtain the impedance matrix or admittance matrix, which relates the voltages and currents at both ends of coupled-microstrip lines. To verify our theory, an example is presented, i.e., a Y-shaped dual-mode bandpass microstrip filter, for which, the equivalent circuit model based on the quasi-TEM analysis of coupled-microstrip lines is accurately set up. The approach in this article is applicable to planar microstrip lines with arbitrary number of conductors, under the quasi-TEM assumption. V C 2011 Wiley Periodicals, Inc. Int J RF and Microwave CAE 22:131-139, 2012.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Quasi-TEM approach of coupled-microstrip lines and its application to the analysis of microstrip filters

Xiao

Norgren

2011

Int J RF and Microwave Comp Aid Eng

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“…Recently, harmonic suppression techniques were proposed to improve the performance of PCL resonator [8 -13]. In addition, the miniaturized and compact PCL resonators were studied for applications [15,16].…”

Section: Introductionmentioning

confidence: 99%

Modified maximally flat parallel‐coupled lines for band‐pass filter applications and miniaturizations

Liu¹,

Zeng

Chang³

et al. 2008

Micro & Optical Tech Letters

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The modified configurations of maximally flat parallel‐coupled lines (MF‐PCL) structure are introduced to improve the performance of the conventional MF‐PCL resonator. To obtain a higher rejection (−39 dB), symmetry response, wider band (BW about 32%), and less insertion loss (−0.4 dB) filters at central frequency 5.78 GHz, the modified MF‐PCL resonators by using enhanced coupling techniques are proposed herein. The size reduction of 50% is achieved. Results including surface current distributions and frequency responses are presented and discussed. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 902–906, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23243

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EBG-based transmission lines with slow-wave characteristics and application to miniaturization of microwave components

et al. 2016

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Compact semilumped bandstop resonators using the capacitively loaded parallel‐coupled microstrip line

Cited by 4 publications

References 8 publications

Quasi-TEM approach of coupled-microstrip lines and its application to the analysis of microstrip filters

Quasi-TEM approach of coupled-microstrip lines and its application to the analysis of microstrip filters

Modified maximally flat parallel‐coupled lines for band‐pass filter applications and miniaturizations

EBG-based transmission lines with slow-wave characteristics and application to miniaturization of microwave components

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