scholarly journals An equivalent circuit model of a rectangular bracket shaped DGS and its microwave filter applications

2019 ◽  
Vol 70 (1) ◽  
pp. 32-38
Author(s):  
Baidenger Agyekum Twumasi ◽  
Jia-Lin Li
Keyword(s):  
Equivalent Circuit ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Unit Cell ◽  
Microwave Filters ◽  
Microwave Filter ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Frequency Responses ◽  
Microwave Engineering

Abstract A lumped-LC equivalent circuit to model a novel rectangular bracket shaped defected ground structure (DGS) is presented in this paper. The presented equivalent circuit can accurately predicate the frequency responses, in terms of the magnitude and phase responses of S parameters, of the studied DGS. The lumped LC parameters of the presented model are extracted based on a unit cell of the DGS. Further, the model is found to be applicable in microwave engineering, including microwave filter designs. Some design examples are presented and examined. The studied DGS based microwave filters characterize maximum passband flatness, sharp skirt between the passband and stopband and wide stopband. The studied equivalent circuit model can accurately predicate the frequency responses including the magnitude and phase of S parameters.

scholarly journals CRLH Transmission Lines for Telecommunications: Fast and Effective Modeling

2017 ◽  
Vol 2017 ◽  
pp. 1-5 ◽  
Author(s):  
Juanjuan Gao ◽  
Guizhen Lu
Keyword(s):  
Resonance Frequency ◽  
Equivalent Circuit ◽  
Transmission Lines ◽  
Cell Model ◽  
Extraction Procedure ◽  
Equivalent Circuit Model ◽  
Parameter Extraction ◽  
Circuit Model ◽  
Unit Cell ◽  
Parallel Resonance

A different parameter extraction approach based on zero immittances for composite right/left-handed (CRLH) structure is presented. For lossless unit cell equivalent circuit model, LC parameters of series and parallel branches are extracted according to series resonance frequency and parallel resonance frequency, respectively. This approach can be applied to symmetric and unbalanced CRLH structures. The parameter extraction procedure is provided and validated by T-type unit cell model. The responses of distributed prototype and extracted equivalent LC circuit model are in good agreement. The equivalent circuit modeling can improve the degree of freedom in the CRLH TLs design. This parameter extraction method provides an effective and straightforward way in CRLH metamaterials design and applications in telecommunication systems.

scholarly journals Miniaturized spoof SPPs filter based on multiple resonators or 5G applications

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Behnam Mazdouri ◽  
Mohammad Mahdi Honari ◽  
Rashid Mirzavand
Keyword(s):  
Equivalent Circuit ◽  
Equivalent Circuit Model ◽  
Dispersion Analysis ◽  
Circuit Model ◽  
Unit Cell ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Resonance Frequencies ◽  
Specific Frequency ◽  
Filter Structures

AbstractThis paper presents a novel and compact band-pass filter based on spoof surface plasmon polaritons (SSPPs) concept for 5G applications. In the first place, an SSPPs unit cell including L-shaped grooves and its equivalent circuit model are introduced. The obtained results from dispersion analysis shows that cut-off frequency of the cell can be considerably decreased thanks to its geometrical configuration. In the second place, a miniaturized SSPP transmission line (TL) consisting of the proposed unit cell with cut-off frequency of 29.5 GHz is designed. Two mode convertors have been employed for efficient connection between coplanar waveguides and SSPP TL. Moreover, a new method based on loading one unit cell of SSPP TL by stub resonators is proposed in order to block a specific frequency band. An equivalent circuit model for the cell with the resonators is proposed to predict rejected frequency range. Thereafter, as an example of our method, a SSPPs filter operating at 26.5–29.5 GHZ is designed by means of connecting stub resonators with different lengths to provide close resonance frequencies. The circuit model, full wave simulation, and measurement results are in a good agreement. The results of proposed groundless SSPP TL and filter structures are promising to make groundless 5G applications possible.

Modified Equivalent Circuit Model of Microwave Filter with LTCC Technique

PIERS Online ◽  
2006 ◽  
Vol 2 (3) ◽  
pp. 292-296 ◽  
Author(s):  
Yali Qin ◽  
An Fang ◽  
Jing Hu ◽  
Wenwei Zhou ◽  
Ming Zhang
Keyword(s):  
Equivalent Circuit ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Microwave Filter

A Method to Construct Equivalent Circuit Model From Frequency Responses With Guaranteed Passivity

2011 ◽  
Vol 26 (1) ◽  
pp. 400-409 ◽  
Author(s):  
Iraj Rahimi Pordanjani ◽  
C. Y. Chung ◽  
Hooman Erfanian Mazin ◽  
Wilsun Xu
Keyword(s):  
Equivalent Circuit ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Frequency Responses

An Equivalent Circuit Model for Vertical Comb Drive MEMS Optical Scanner Controlled by Pulse Width Modulation

2012 ◽  
Vol 132 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Satoshi Maruyama ◽  
Muneki Nakada ◽  
Makoto Mita ◽  
Takuya Takahashi ◽  
Hiroyuki Fujita ◽  
...  
Keyword(s):  
Equivalent Circuit ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Comb Drive ◽  
Optical Scanner
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