Analysis of different types of coupling for microstrip ring resonator

Preetha, D.; Jayanthy, T.

doi:10.1109/icsemr.2014.7043561

Cited by 6 publications

(3 citation statements)

References 6 publications

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“…Nevertheless, the studies that have been described to perform a variety of ways to obtain a high Q factor seek to determine the relative permittivity of the MUT and they are related to the resonant frequency. Elements that change the Q factor is the size of the coupling gap between the ring resonator and feed lines, where it affects the strength of coupling and the resonant frequency [69,70]. Additionally, the Q-factor of a slot resonator can be increased by reducing the size of the sensor and achieving a high permittivity value with low loss material in a parallel plate capacitor [71].…”

Section: Discussionmentioning

confidence: 99%

Planar Microwave Sensors for Accurate Measurement of Material Characterization: A Review

et al. 2017

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Microwave sensor is used in various industrial applications and requires highly accurate measurements for material properties. Conventionally, cavity waveguide perturbation, free-space transmission, open-ended coaxial probe, and planar transmission line technique have been used for characterizing materials. However, these planar transmission lines are often large and expensive to build, further restricting their use in many important applications. Thus, this technique is cost effective, easy to manufacture and due to its compact size, it has the potential to produce sensitivity and a high Q-factor for various materials. This paper reviews the common characteristics of planar transmission line and discusses numerous studies about several designs of the microstrip resonator to improve the sensor performance in terms of the sensitivity and accuracy. This technique enables its use for several industrial applications such as agriculture and quality control. It is believed that previous studies would lead to a promising solution of characterizing materials with high sensitivity, particularly in determining a high Qfactor resonator sensor.

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Section: Discussionmentioning

confidence: 99%

Planar Microwave Sensors for Accurate Measurement of Material Characterization: A Review

et al. 2017

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“…However, the technique can only extract permittivity of materials since there is only one port transmitted power for a measurement. Apart from that, the different type of coupling techniques was analyzed by D. Preetha and T. Jayanthy [3] which is to compare the efficiency of each type of coupling methods. Since the sensitivity of the resonator depends on Q-factor, the best coupling method was suggested for future research work.…”

Section: Introductionmentioning

confidence: 99%

Microwave fluidic sensor using enhanced coupling peripheral Microstrip split-ring resonator sensor

Bahar

Zakaria

Ruslan

et al. 2015

2015 IEEE International Conference on Control System, Computing and Engineering (ICCSCE)

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In this paper, a new type of microwave fluidic sensor using enhanced coupling peripheral microstrip split-ring resonator is studied in order to analyze the effect of Q-factor and insertion loss with several common liquids. The technique is based on perturbation theory, in which the resonant frequency and Q-factor of the microwave resonator depend on the dielectric properties of the resonator. A Microstrip split-ring resonator with two gaps is implemented for the design of the sensors. Several types of solvents are tested with quartz capillary to verify the sensor performance by simulation. At 2.4 GHz, the split-ring resonator demonstrates significant changes in resonant frequency. Finally, a comparison between previous research works is performed in order to evaluate the effectiveness of resonator sensors for the development of material characterization industry.

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“…A balance must be struck when designing the gap as increasing the coupling capacitance will allow more energy to couple through the circuit while simultaneously increasing the loading effect of the measurement apparatus. This can either reduce the sensitivity to unloaded quality factor or reduce sensitivity to the unloaded resonance [31].…”

Section: Ring Resonatorsmentioning

confidence: 99%

Methods of Printing Passive Analog Beamforming Devices

Hyland¹

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Analog beamforming is the process of controlling the amplitude and phase distribution across an antenna array to produce focused EM radiation. There are many ways of accomplishing this, but this thesis focuses on printing techniques to produce beamforming devices. The methods of production used for this work includes 3D polymer printing, PCB fabrication and knife tracing with copper cladding and tape. Three types of devices are designed and fabricated for this work including Luneburg lenses, Butler matricies and ferroelectric varactors. The Luneburg lenses are produced through 3D printing processes and measured in the far-field using with an anechoic chamber. Two different Butler matricies are designed and presented, one is designed at 2.4 GHz on Rogers 3006 substrate and fabricated using a knife tracing printing process. Radiation pattern measurements are made for this matrix in the far-field using an anechoic chamber. The other matrix is designed using lumped components and printed with standard PCB fabrication. Phase and amplitude measurements are made for this matrix with a VNA. Ferroelectric material for the varactors is produced through 3D printing and the electrodes are made from copper tape with knife tracing. A high frequency varactor is produced using knife tracing and measured using 250 um pitch circuit probes for flexible applications.A huge thank you to Nagui Mikhail for being a huge support my entire time at Carleton University. He continually supported my projects provided solutions to problems big and small.Finally, I would like to thank my friends and family for all the support they provided throughout my journey and to my past supervisor Dr. Ryan Griffin who played an instrumental role in my education and development both personally and professionally.

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Analysis of different types of coupling for microstrip ring resonator

Cited by 6 publications

References 6 publications

Planar Microwave Sensors for Accurate Measurement of Material Characterization: A Review

Planar Microwave Sensors for Accurate Measurement of Material Characterization: A Review

Microwave fluidic sensor using enhanced coupling peripheral Microstrip split-ring resonator sensor

Methods of Printing Passive Analog Beamforming Devices

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