Circuit model of circular antenna loaded with composite right/left-handed transmission line

2014 ◽  
Author(s):  
Sen Yan ◽  
Guy A. E. Vandenbosch
Keyword(s):  
Transmission Line ◽  
Circuit Model ◽  
Left Handed

A compact parallel coupled meander lines shaped composite right/left-handed transmission line (CRLH-TL) based symmetric quasi-0 dB coupler

Frequenz ◽  
2020 ◽  
Vol 74 (9-10) ◽  
pp. 295-307
Author(s):  
Abhishek Kumar ◽  
Dileep Kumar Upadhyay ◽  
Srikanta Pal
Keyword(s):  
Transmission Line ◽  
Circuit Model ◽  
Frequency Range ◽  
Fractional Bandwidth ◽  
Coupled Line ◽  
Left Handed ◽  
Lc Circuit ◽  
Better Than ◽  
Good Agreement ◽  
Meander Lines

AbstractIn this paper, parallel coupled meander lines (PCML) composite right/left-handed transmission line (CRLH-TL) based symmetrical quasi-0 dB coupled-line coupler is presented. Proposed coupler shows measured backward wave coupling level of 0.81 dB at frequency of 6.17 GHz with 3 dB fractional bandwidth (FBW) of 12.64%. Throughout the 3 dB frequency range (5.78–6.56 GHz), isolation and insertion loss of the coupler is better than 24 dB. Overall size of the proposed coupler is 19.6 × 12.1 mm. An equivalent lumped LC circuit model of the coupler is demonstrated. Measured results of the coupler show good agreement with the electromagnetic (EM) simulated and lumped LC circuit model simulated results, which validates proposed coupler design and its performance.

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.

Composite right/left-handed transmission line with array of thermocouples for generating terahertz radiation

2020 ◽  
Vol 92 (2) ◽  
pp. 20502
Author(s):  
Behrokh Beiranvand ◽  
Alexander S. Sobolev ◽  
Anton V. Kudryashov
Keyword(s):  
Transmission Line ◽  
Terahertz Radiation ◽  
Transmission Lines ◽  
Software Package ◽  
Optical Pulses ◽  
Capacitively Coupled ◽  
Voltage Difference ◽  
Left Handed ◽  
Microwave Transmission ◽  
Commercial Software Package

We present a new concept of the thermoelectric structure that generates microwave and terahertz signals when illuminated by femtosecond optical pulses. The structure consists of a series array of capacitively coupled thermocouples. The array acts as a hybrid type microwave transmission line with anomalous dispersion and phase velocity higher than the velocity of light. This allows for adding up the responces from all the thermocouples in phase. The array is easily integrable with microstrip transmission lines. Dispersion curves obtained from both the lumped network scheme and numerical simulations are presented. The connection of the thermocouples is a composite right/left-handed transmission line, which can receive terahertz radiation from the transmission line ports. The radiation of the photon to the surface of the thermocouple structure causes a voltage difference with the bandwidth of terahertz. We examined a lossy composite right/left-handed transmission line to extract the circuit elements. The calculated properties of the design are extracted by employing commercial software package CST STUDIO SUITE.

scholarly journals Transmission-line-circuit model of an 85-TW, 25-MA pulsed-power accelerator

2018 ◽  
Vol 21 (3) ◽  
Author(s):  
B. T. Hutsel ◽  
P. A. Corcoran ◽  
M. E. Cuneo ◽  
M. R. Gomez ◽  
M. H. Hess ◽  
...  
Keyword(s):  
Transmission Line ◽  
Circuit Model ◽  
Pulsed Power

A Multilayer Compact Solid State Composite Right/Left-Handed Metamaterial Transmission Line

2008 ◽  
Vol 29 (12) ◽  
pp. 1383-1385 ◽  
Author(s):  
Zhirun Hu ◽  
Philip D. Curtis ◽  
Wei Tong
Keyword(s):  
Solid State ◽  
Transmission Line ◽  
Left Handed
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