scholarly journals A Fully-Printed CRLH Dual-Band Dipole Antenna Fed by a Compact CRLH Dual-Band Balun

Sensors ◽  
2020 ◽  
Vol 20 (17) ◽  
pp. 4991
Author(s):  
Muhammad Kamran Khattak ◽  
Changhyeong Lee ◽  
Heejun Park ◽  
Sungtek Kahng
Keyword(s):  
Transmission Line ◽  
Mobile Applications ◽  
Phase Shifter ◽  
Design Method ◽  
Dipole Antenna ◽  
Dual Band ◽  
Dispersion Diagram ◽  
Left Handed ◽  
Lumped Elements ◽  
Hybrid Coupler

In this paper, a new design method is proposed for a planar and compact dual-band dipole antenna. The dipole antenna has arms as a hybrid CRLH (Composite right- and left-handed) transmission-line comprising distributed and lumped elements for the dual-band function. The two arms are fed by the outputs of a compact and printed CRLH dual-band balun which consists of a CRLH hybrid coupler and an additional CRLH phase-shifter. Its operational frequencies are 2.4 and 5.2 GHz as popular mobile applications. Verifying the method, the circuit approach, EM (Electromagnetics) simulation and measurement are conducted and their results turn out to agree well with each other. Additionally, the CRLH property is shown with the dispersion diagram and the effective size-reduction is mentioned.

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.

SIMPLIFIED EXTENDED COMPOSITE RIGHT/LEFT-HANDED TRANSMISSION LINE STRUCTURE FOR DUAL-BAND APPLICATIONS

2010 ◽  
Vol 15 ◽  
pp. 137-144 ◽  
Author(s):  
Li Qiang ◽  
Hongmin Lu ◽  
Wei Zhao ◽  
Ji-Kang Wang ◽  
Bing Liu
Keyword(s):  
Transmission Line ◽  
Dual Band ◽  
Line Structure ◽  
Left Handed

Broadband Tunable Third-Order IMD Cancellation Using Left-Handed Transmission-Line-Based Phase Shifter

2015 ◽  
Vol 25 (7) ◽  
pp. 478-480 ◽  
Author(s):  
Hongwoo Park ◽  
Hyoungsuk Yoo ◽  
Sungtek Kahng ◽  
Hongjoon Kim
Keyword(s):  
Transmission Line ◽  
Phase Shifter ◽  
Third Order ◽  
Left Handed
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