Modeling the strong coupling between microstrip and complementary split ring resonator transmission lines on a PCB

2017 ◽  
Vol 59 (7) ◽  
pp. 1475-1480
Author(s):  
Irfanullah Irfan ◽  
Sanjay Nariyal ◽  
David Schuette ◽  
Shahid Khattak ◽  
Benjamin D. Braaten
Keyword(s):  
Strong Coupling ◽  
Transmission Lines ◽  
Ring Resonator ◽  
Split Ring Resonator ◽  
Split Ring ◽  
Complementary Split Ring Resonator

scholarly journals Size miniaturization of chipless RFID tag using metamaterial structure

2019 ◽  
Vol 15 (2) ◽  
pp. 723
Author(s):  
Mohd Ezwan B. Jalil ◽  
Mohamad Kamal A. Rahim ◽  
Osman B. Ayop ◽  
Noor Asmawati Samsuri
Keyword(s):  
Transmission Lines ◽  
Ring Resonator ◽  
Split Ring Resonator ◽  
Effective Length ◽  
Metamaterial Structure ◽  
Split Ring ◽  
Rfid Tag ◽  
Complementary Split Ring Resonator ◽  
Chipless Rfid ◽  
Frequency Position

A Chipless RFID based Modified Complementary Split Ring Resonator (MCSRR) with Different Width (DW) which is metamaterial structure is designed using PET substrate (  =3, loss tangent = 0.025 at 2 GHz) to miniaturize effective length size of conventional split ring resonator. The MCSRR structure with DW provides less size about 17% compared with the conventional MCSRR structure. The single MCSRR resonator with different width only requires a frequency range of 12 % of Complementary Split Ring Resonator (CSRR) resonator. The slotted MCSRR resonator is located underneath substrate and within substrate is connected with transmission lines. The insertion loss value of MCSRR resonator is used to encode ID information of chipless RFID with maximizing ID information using Frequency Position technique. The best swapping parameter for encoding ID number information is split gap of both ring compare with other parameter such as spacing between ring and width of ring.

scholarly journals Complementary Split-Ring Resonator for Microwave Heating of µL Volumes in Microwells in Continuous Microfluidics

Chemosensors ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 184
Author(s):  
Tomislav Markovic ◽  
Gertjan Maenhout ◽  
Matko Martinic ◽  
Bart Nauwelaers
Keyword(s):  
Microwave Heating ◽  
Ring Resonator ◽  
Casting Process ◽  
Split Ring Resonator ◽  
Sample Volume ◽  
Split Ring ◽  
Complementary Split Ring Resonator ◽  
Microwave Dielectric ◽  
Electric Field Direction ◽  
Made In

This work presents the design and evaluation of a planar device for microwave heating of liquids in continuous microfluidics (CMF) made in polydimethylsiloxane (PDMS). It deals with volumes in the µL range, which are of high interest and relevance to biologists and chemists. The planar heater in this work is conceived around a complementary split-ring resonator (CSRR) topology that offers a desired electric field direction to—and interaction with—liquids in a microwell. The designed device on a 0.25 mm thick Rogers RO4350B substrate operates at around 2.5 GHz, while a CMF channel and a 2.45 µL microwell are manufactured in PDMS using the casting process. The evaluation of the performance of the designed heater is conducted using a fluorescent dye, Rhodamine B, dissolved in deionized water. Heating measurements are carried out using 1 W of power and the designed device achieves a temperature of 47 °C on a sample volume of 2.45 µL after 20 s of heating. Based on the achieved results, the CSRR topology has a large potential in microwave heating, in addition to the already demonstrated potential in microwave dielectric sensing, all proving the multifunctionality and reusability of single planar microwave-microfluidic devices.

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