A study of single planar resonator for dielectric characterization

• Main Author: Moalim Rashid, Abdiqudus Abubakar
• Format: Thesis
• Language: English; English; English
• Published: 2021
• Subjects: TK452-454.4 Electric apparatus and materials. Electric circuits. Electric networks
• Online Access: http://eprints.uthm.edu.my/6942/1/24p%20ABDIQUDUS%20ABUBAKAR%20MOALIM%20RASHID.pdf; http://eprints.uthm.edu.my/6942/2/ABDIQUDUS%20ABUBAKAR%20MOALIM%20RASHID%20COPYRIGHT%20DECLARATION.pdf; http://eprints.uthm.edu.my/6942/3/ABDIQUDUS%20ABUBAKAR%20MOALIM%20RASHID%20WATERMARK.pdf; http://eprints.uthm.edu.my/6942/

A square split-ring resonator (SSRR) for dielectric characterization for solid materials such as Wood and Iron is proposed. The SSRR is design on the substrate, material of FR4 and copper for the square ring, copper on ground. The dielectric characterization sensor is depends on the change of the resonance frequency and change material sample mounted on the resonator. The simulated s-parameter response of a single square SRR. Simulated design started by designing a square split ring resonator with no gap and two feedlines on both sides which connects to port one and port two, S11 at 3 dB and S21 at 14 dB .Then, start modifying the design of square SRR by cutting gap on both sides of square ring. The simulated result of modified square SRR at S11 -35 dB and S21 -2.5dB both started design and modified at frequency of 2.45 GHz. Material under test MUT started with placing sample on the most sensitive area of permittivity and permeability. Solid material such as iron and wood have been used in this simulation the iron which makes the frequency moves from 2.45 GHz with -35dB to 2.26 GHz with -13dB, wood which makes the frequency moves from 2.45 GHz with -35dB to 2.497 GHz with -23.6dB. Both of this results verified that the SRR design is working as sensor.