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2022-10-24
A Mode Switchable Ferrite Composite Right/Left Handed Microwave Coupler
By
Progress In Electromagnetics Research C, Vol. 125, 201-216, 2022
Abstract
In this paper, novel mode switchable microwave coupled line couplers on ferrite substrates are presented. The couplers are realized in Composite Right/Left Handedcoplanar waveguide configurations. Two different types of mode switchable couplers are proposed. The first one can switch the power from the backward coupling port to the through port. The second one can switch the power from the backward coupling port to both the through and forward coupling ports. In both cases, the mode switching is achieved by varying the applied DC magnetic bias. The theoretical analysis of the switching mechanism has been carried out based on the general coupled mode approach. The analysis is then verified numerically and experimentally. The measurement results confirm the switching functionalities of the fabricated couplers with better than 10 dB isolation between the switched signals. Moreover, these novel mode switchable couplers are compact and require very low external DC magnetic bias due to their CPW configurations. These new proposed switrches can be applied in the smart microwave compoennts in different radar/communication application.
Citation
Mahmoud Abdalla Zhirun Hu , "A Mode Switchable Ferrite Composite Right/Left Handed Microwave Coupler," Progress In Electromagnetics Research C, Vol. 125, 201-216, 2022.
doi:10.2528/PIERC22092706
http://www.jpier.org/PIERC/pier.php?paper=22092706
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