COMPUTER-AIDED ANALYSIS OF MICROSTRIP ANTENNAS EMPLOYING PARASITIC ELEMENTS

Date

1993-10-01

Author

HAYIRLIOGLU, L
Birand, Mehmet Tuncay

Metadata

Show full item record

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

Item Usage Stats

164
views

0
downloads

The moment method in the spectral domain is used to perform a computer-aided analysis of printed antenna structures employing tuning stubs and electromagnetically coupled patches. Variation of the input VSWR versus frequency is obtained and the radiation patterns are plotted for various antenna configurations. Surface wave coupling effects are investigated. (C) 1993 John Wiley & Sons, Inc.

Subject Keywords

General Engineering

URI

https://hdl.handle.net/11511/56334

Journal

INTERNATIONAL JOURNAL OF MICROWAVE AND MILLIMETER-WAVE COMPUTER-AIDED ENGINEERING

DOI

https://doi.org/10.1002/mmce.4570030412

Collections

Graduate School of Natural and Applied Sciences, Article

Suggestions

OpenMETU
Core

RECONSTRUCTION OF PERMITTIVITY AND CONDUCTIVITY PROFILES OF A DIELECTRIC SLAB IN THE TIME DOMAIN BY DESCENT METHODS ONDER, M; Kuzuoğlu, Mustafa (Institution of Engineering and Technology (IET), 1992-10-01) An optimisation approach is presented for the problem of reconstructing the permittivity and conductivity profiles of a dielectric slab from the reflected and transmitted field data. The problem is treated as an optimal control problem where the norm of the difference of measured and calculated boundary data is minimised subject to the state equation governing the system. The original constrained optimisation problem is reduced to the evaluation of stationary points of an augmented functional which is obtai...
A computational procedure for estimating residual stresses and secondary plastic flow limits in nonlinearly strain hardening rotating shafts Eraslan, Ahmet Nedim (Springer Science and Business Media LLC, 2005-03-01) A computational procedure to estimate the residual stress distributions and the limit angular speeds for avoiding secondary plastic deformation in nonlinearly strain hardening rotating elastic-plastic shafts is given. The model is based on von Mises yield condition, J(2) deformation theory and a Swift-type hardening law. The boundary value problem for the governing nonlinear differential equation is solved by a shooting method using Newton iterations with numerically approximated tangent. Solid as well as h...
Sensorless control of a three-degree-of-freedom ultrasonic vibration tool holder Gao, Jian; Çalışkan, Hakan; Altintas, Yusuf (Elsevier BV, 2019-07-01) Piezoelectric actuators are commonly used to deliver vibrations with an amplitude range of (5 mu m-25 mu m) at ultrasonic frequencies (>= 15 kHz) in machining applications. The natural frequencies of ultrasonic vibration actuators vary under the varying cutting force disturbances during machining. Consequently, the amplitudes of delivered vibrations deviate from the desired reference values. As opposed to using vibration sensors, this paper presents a sensorless method to track and control the frequency and...
COMPRESSIBLE, HYPERELASTIC SPINNING TUBES SUBJECTED TO CIRCUMFERENTIAL SHEAR ERTEPINAR, A (Elsevier BV, 1991-01-01) The finite strain behavior of cylindrical tubes, made of a polynomial compressible material and subjected to the simultaneous action of constant spin and uniform external circumferential shear, is investigated using the theory of finite elasticity. The inner surface of the tube is assumed to be perfectly bonded to a rigid shaft. The governing quasi-linear system of two ordinary differential equations is solved using a shooting method. Numerical results are generated to analyze, qualitatively, the effects...
An experimental study of residual fiber strains in Ti-15-3 continuous fiber composites Pickard, S.M.; Miracle, D.B.; Majumdar, B.S.; Kendig, K.L.; Rothenflue, L.; Çöker, Demirkan (Elsevier BV, 1995-01-01) A simplified experimental technique to determine the axial fiber residual strain in continuously-reinforced metal matrix composites is described. The residual fiber strains in two Ti-15V-3Cr-3Al-3Sn/SiC metal matrix composites have been measured with this technique. Residual fiber strains on the order of 0.2% are measured in the as-processed condition, and the residual stresses approach zero after testing the composite in tension to failure at room temperature. A conceptual description of the effect of tens...

Citation Formats

L. HAYIRLIOGLU and M. T. Birand, “COMPUTER-AIDED ANALYSIS OF MICROSTRIP ANTENNAS EMPLOYING PARASITIC ELEMENTS,” INTERNATIONAL JOURNAL OF MICROWAVE AND MILLIMETER-WAVE COMPUTER-AIDED ENGINEERING, pp. 405–411, 1993, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/56334.