Investigation of A Novel Dual Band-Notched UWB Antenna by the Equivalent Circuit Model and Time Domain Characteristics

2013 ◽  
Vol 55 (12) ◽  
pp. 2993-3000 ◽  
Author(s):  
Guoping Gao ◽  
Bin Hu ◽  
Xiaodong Cong ◽  
Lele He
Keyword(s):  
Equivalent Circuit ◽  
Time Domain ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Dual Band ◽  
Uwb Antenna

scholarly journals Design of Miniaturized Multiband Filters Using Zero Order Resonators for WLAN Applications

2015 ◽  
Vol 2015 ◽  
pp. 1-7
Author(s):  
Maryam Shafiee ◽  
Mohammad Amin Chaychi Zadeh ◽  
Homayoon Oraizi
Keyword(s):  
Least Squares ◽  
Equivalent Circuit ◽  
Narrow Band ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Zero Order ◽  
Dual Band ◽  
Method Of Least Squares ◽  
Band Filter ◽  
Narrow Band Filter

The objective of this paper is to design miniaturized narrow- and dual-band filters for WLAN application using zero order resonators by the method of least squares. The miniaturization of the narrow-band filter is up to 70% and that of the dual-band filter is up to 64% compared to the available models in the literature. Two prototype models of the narrow-band and dual-band filters are fabricated and measured, which verify the proposed structure for the filter and its design by the presented method, using an equivalent circuit model.

scholarly journals Resonant Coupling Effects in a Double-Layer THz Bandpass Filter

2020 ◽  
Vol 10 (15) ◽  
pp. 5030
Author(s):  
Tao Gao ◽  
Feng Huang ◽  
Yanqing Chen ◽  
Weilin Zhu ◽  
Xuewei Ju ◽  
...  
Keyword(s):  
Equivalent Circuit ◽  
Double Layer ◽  
Time Domain ◽  
Lower Layer ◽  
Equivalent Circuit Model ◽  
Interlayer Spacing ◽  
Circuit Model ◽  
Thz Spectroscopy ◽  
Similar Frequency ◽  
Resonant Coupling

Cascading similar frequency selective surfaces (FSSs) improves the roll-off rate and frequency selectivity of THz bandpass filters. However, resonant coupling between FSS layers causes anomalous transmission peaks. In this work, we have employed an equivalent circuit model to analyze a double-layer FSS structure with periodic cross apertures at different interlayer spacing. We found that the anomalous peaks can be attributed to the resonant coupling between the upper and lower layer FSSs, and their periodic appearance with changing interlayer spacing is related to the half-wavelength repeatability of the circuit. We have fabricated a double-layer FSS sample using femtosecond laser micromachining and measured it using time-domain THz spectroscopy. The results using the equivalent circuit model agree with the Finite-Difference Time-Domain (FDTD) and experimental results.

A NOVEL COMPOSITE RIGHT/LEFT-HANDED TRANSMISSION LINE FOR DUAL-BAND APPLICATIONS

2013 ◽  
Vol 22 (04) ◽  
pp. 1350038
Author(s):  
LIYU HUANG ◽  
HONGXIN ZHANG ◽  
YUANYUAN XU ◽  
PENGFEI HE
Keyword(s):  
Transmission Line ◽  
Equivalent Circuit ◽  
Model Simulation ◽  
Strong Support ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Dual Band ◽  
Model Parameters ◽  
Dispersion Diagram ◽  
Left Handed

A composite right/left-handed transmission line (CRLH-TL) composed of a substrate and X-shaped metal patches is proposed and investigated theoretically as well as experimentally. The scattering parameters are investigated both in electromagnetic (EM) simulation and equivalent circuit model simulation, it is found that the structure works as a dual band CRLH-TL having the first right-handed passband and the second balanced CRLH frequency band at the resonant frequencies of 6.27 GHz and 13.45 GHz, respectively. Moreover, the required equations and the dispersion diagram derived from the equivalent circuit model to analyze the proposed CRLH structure give strong support to the interpretation of all EM phenomena. The effect of the equivalent circuit model parameters on the dispersion diagram is investigated. A parallel-plate waveguide (PPW) measurement system is employed to validate the characteristics of the CRLH-TL whose features show that the design of the novel artificial TLs is more flexible and convenient.

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