Broadband Impedance Transformation by Defected Dielectric on Microstrip Lines

Date

2018-11-02

Author

Kaya, Tevfik
Nesimoglu, Tayfun

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

184
views

0
downloads

In this work, a different approach to achieve a desired characteristic impedance value on microstrips is presented. In standard microwave circuits using microstrip lines, the dielectric thickness is same and uniform across the whole circuit. In this paper, it is proposed to modify the dielectric thickness to achieve a certain design goal by creating variations in the characteristic impedance of the microstrip transmission line without changing the width of the line. The proposed approach is applied to a multi-section quarter wave impedance transformer. Simulation and measured results demonstrate the potential of the defected dielectric approach by achieving a much wider bandwidth than a conventional multisection impedance transformer. The proposed idea can be expanded and applied to other microstrip based microwave circuits such as filters, power dividers, hybrid couplers, matching networks, etc.

Subject Keywords

Defected dielectric, Quarter wave impedance transformer, Microstrips, Broadband impedance transformer

URI

https://hdl.handle.net/11511/52543

Collections

Department of Petroleum and Natural Gas Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Performance Evaluation of the Numerical Flux Jacobians in Flow Solution and Aerodynamic Design Optimization Ezertas, Alper; Eyi, Sinan (2010-07-16) A direct sparse matrix solver is utilized for the flow solution and the analytical sensitivity analysis. The effects of the accuracy of the numerical Jacobians on the accuracy of sensitivity analysis and on the performance of the Newton's method flow solver are analyzed in detail. The gradient based aerodynamic design optimization is employed to demonstrate those effects.
Time-domain calculation of sound propagation in lined ducts with sheared flows Özyörük, Yusuf (1999-01-01) A recent application of the time-domain equivalent of the classical acoustic impedance condition, i.e. the particle displacement continuity equation, to the numerical simulations of a flow-impedance tube in the time domain yielded reasonably good results with uniform mean flows. The present paper extends this application to include sheared mean flow effects on sound propagation over acoustically treated walls. To assess the prediction improvements with sheared flows, especially at relatively high Mach numbe...
Fine resolution frequency estimation from three DFT samples: Case of windowed data Candan, Çağatay (2015-09-01) An efficient and low complexity frequency estimation method based on the discrete Fourier transform (DFT) samples is described. The suggested method can operate with an arbitrary window function in the absence or presence of zero-padding. The frequency estimation performance of the suggested method is shown to follow the Cramer-Rao bound closely without any error floor due to estimator bias, even at exceptionally high signal-to-noise-ratio (SNR) values.
Theoretical limits and safety considerations for magneto-acousto electrical tomography Ghalichi, Elyar; Gençer, Nevzat Güneri; Department of Electrical and Electronics Engineering (2017) In this study, the performance of Magneto-Acousto-Electrical Tomography (MAET) method is investigated quantitatively by considering interrelations between its sensitivity, resolution and conductivity contrast. An analytical solution for the forward problem of MAET is derived for two-dimensional (2D) concentric bodies by Separation of Variables Method. The electric potential and the acoustic pressure are separated to their angular and radial components. The series coefficients for these solutions are obtaine...
QUANTUM-CLASSICAL MIXED-MODE ANALYSIS OF NONLINEARLY COUPLED OSCILLATORS - A TIME-DEPENDENT SELF-CONSISTENT-FIELD APPROACH YURTSEVER, E; BRICKMANN, J (1992-02-01) A two-dimensional vibrational system with a strong nonlinear coupling is studied using a quantum-classical mixed mode self-consistent-field approach. The classical equations of motion as well as the time-dependent Schrodinger equation are solved for respective modes under the influence of the average fields generated by the other modes. This vibrational system was previously shown to be chaotic under classical mechanical treatment but quantum mechanical observations pointed out to highly regular behaviour...

Citation Formats

T. Kaya and T. Nesimoglu, “Broadband Impedance Transformation by Defected Dielectric on Microstrip Lines,” 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/52543.