scholarly journals Characterization of Microstrip Ring with a Narrow Gap by an Iterative Method

2008 ◽  
Vol 2008 ◽  
pp. 1-8
Author(s):  
M. Yeddes ◽  
A. Gharsallah ◽  
A. Gharbi ◽  
H. Baudrand
Keyword(s):  
Iterative Method ◽  
Ring Resonator ◽  
Design Procedure ◽  
Published Data ◽  
Iterative Calculation ◽  
Microwave Components ◽  
Microstrip Ring ◽  
And Inversion ◽  
Good Agreement

This paper presents an implementation of an iterative method based on the wave's concept, for analysing a ring resonator. This method includes a two-dimensional fourier modal transformation (2D-FMT) in a wave guide environment. The method has the advantage of simplicity in that it does not involve basis functions and inversion of matrices, as used in other calculation methods. Therefore, it is capable of analyzing larger bodies than other classical techniques. An implementation of the iterative calculation is shown for the extraction of S parameters of microwave components. The good agreement between simulation results and experimental published data justifies the design procedure and validates the present analysis approach.

scholarly journals DESTRUCTIVE DIELECTRIC CHARACTERIZATION OF MATERIAL USING MICROSTRIP RING RESONATOR.

2018 ◽  
Vol 6 (6) ◽  
pp. 402-413 ◽  
Author(s):  
Hussein Kassem ◽  
◽  
HayssamEl Hajj ◽  
Rabih Rammal ◽  
IsmailEl Sayad ◽  
...  
Keyword(s):  
Ring Resonator ◽  
Dielectric Characterization ◽  
Microstrip Ring ◽  
Microstrip Ring Resonator

Theoretical and Experimental Characterization of the 34.6 2D Lattice Material

2010 ◽  
Author(s):  
Mostafa S. A. Elsayed ◽  
Damiano Pasini
Keyword(s):  
Pure Shear ◽  
Experimental Studies ◽  
Design Procedure ◽  
Maximum Error ◽  
Static Tests ◽  
Lattice Material ◽  
Theoretical Results ◽  
Good Agreement ◽  
Effective Mechanical Properties

In this paper, the effective mechanical properties of the 34.6 lattice material are characterized theoretically and experimentally. The characterized properties include the stiffness and the strength of the material. A detailed description of the design procedure of the test specimens is presented. Three quasi-static tests are performed, namely, uniaxial tension, uniaxial compression and pure shear. The comparison of the experimental data to the theoretical results shows that the former are in good agreement with the latter. The maximum error obtained of 13% is acceptable according to the literature on experimental studies of cellular solids.

A Balanced Dual-Band BPF Based on C-CSRR with Improved Passband Selectivity

Frequenz ◽  
2019 ◽  
Vol 73 (5-6) ◽  
pp. 203-208
Author(s):  
Lei Chen ◽  
Qin Kun Xiao ◽  
Yan Ni Gan
Keyword(s):  
Bandpass Filter ◽  
Ring Resonator ◽  
Design Procedure ◽  
Split Ring Resonator ◽  
Ring Resonators ◽  
Dual Band ◽  
Differential Mode ◽  
Split Ring ◽  
Complementary Split Ring Resonator ◽  
Good Agreement

Abstract A balanced dual-band bandpass filter (BPF) is proposed by embedding two nested coupled complementary split-ring resonators (C-CSRRs) into a H-type balanced stepped-impedance slotline resonator in this paper. C-CSRR is composed of a complementary split-ring resonator (CSRR) with a pair of coupling slotlines in the open end, which can generate a bandpass response. In order to improve the passband selectivity further, source-load-coupled structure is employed. Moreover, it can be found that the proposed BPF has a wideband common-mode (CM) suppression, which is independent from the differential-mode (DM) passbands. Therefore, the design procedure can be significantly simplified. In order to validate its practicalbility, one balanced dual-band BPF is fabricated. The predicted results on S parameters are compared with the measured ones and a good agreement is found.

scholarly journals Characterization of Modal Frequencies and Orientation of Axisymmetric Resonators in Coriolis Vibratory Gyroscopes

Micromachines ◽  
2021 ◽  
Vol 12 (10) ◽  
pp. 1206
Author(s):  
Xukai Ding ◽  
Han Zhang ◽  
Libin Huang ◽  
Liye Zhao ◽  
Hongsheng Li
Keyword(s):  
Ring Resonator ◽  
Nonlinear Stiffness ◽  
Sweep Method ◽  
Frequency Sweep ◽  
Vibratory Gyroscopes ◽  
Frequency Responses ◽  
Orientation Information ◽  
The Time Domain ◽  
Good Agreement

This paper presents the characterization of the modal frequencies and the modal orientation of the axisymmetric resonators in Coriolis vibratory gyroscopes based on the approaches of the frequency sweep and the ring down. The modal frequencies and the orientation of the stiffness axis are the key parameters for the mechanical correction of the stiffness imperfections. The frequency sweep method utilizes the zero and the poles in the magnitude-frequency responses of the two-dimensional transfer function to extract the modal orientation information within the frequency domain. The ring down method makes use of the peak and the valley values of the beat signals at the readout electrodes to obtain the modal orientation and the coefficient of the nonlinear stiffness directly within the time domain. The proposed approaches were verified via a silicon ring resonator designed for gyroscopic sensing and the modal information from the experiments exhibited a good agreement between the methods of the frequency sweep and the ring down.

scholarly journals Dielectric Properties Characterization of Material Under Test using Microstrip Ring Resonator

2021 ◽  
Vol 1755 (1) ◽  
pp. 012017
Author(s):  
Khuzairi Masrakin ◽  
Sofea Abdul Malek ◽  
Siti Zuraidah Ibrahim ◽  
Hasliza A. Rahim ◽  
Aliya A. Dewani
Keyword(s):  
Dielectric Properties ◽  
Ring Resonator ◽  
Microstrip Ring ◽  
Microstrip Ring Resonator ◽  
Properties Characterization

scholarly journals Characterization of Tiled Architecture for C-Band 1-Bit Beam-Steering Transmitarray

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1259
Author(s):  
Dmitry Kozlov ◽  
Irina Munina ◽  
Pavel Turalchuk ◽  
Vitalii Kirillov ◽  
Alexey Shitvov ◽  
...  
Keyword(s):  
Communication Systems ◽  
Beam Steering ◽  
Unit Cell ◽  
Electromagnetic Simulations ◽  
Fifth Generation ◽  
Full Wave ◽  
Array Architecture ◽  
Modulation Pattern ◽  
Good Agreement

A new implementation of a beam-steering transmitarray is proposed based on the tiled array architecture. Each pixel of the transmitarray is manufactured as a standalone unit which can be hard-wired for specific transmission characteristics. A set of complementary units, providing reciprocal phase-shifts, can be assembled in a prescribed spatial phase-modulation pattern to perform beam steering and beam forming in a broad spatial range. A compact circuit model of the tiled unit cell is proposed and characterized with full-wave electromagnetic simulations. Waveguide measurements of a prototype unit cell have been carried out. A design example of a tiled 10 × 10-element 1-bit beam-steering transmitarray is presented and its performance benchmarked against the conventional single-panel, i.e., unibody, counterpart. Prototypes of the tiled and single-panel C-band transmitarrays have been fabricated and tested, demonstrating their close performance, good agreement with simulations and a weak effect of fabrication tolerances. The proposed transmitarray antenna configuration has great potential for fifth-generation (5G) communication systems.

scholarly journals Complex Permittivity Characterization of Liquid Samples Based on a Split Ring Resonator (SRR)

Sensors ◽  
2021 ◽  
Vol 21 (10) ◽  
pp. 3385
Author(s):  
Jialu Ma ◽  
Jingchao Tang ◽  
Kaicheng Wang ◽  
Lianghao Guo ◽  
Yubin Gong ◽  
...  
Keyword(s):  
Resonant Frequency ◽  
Complex Permittivity ◽  
Ring Resonator ◽  
High Sensitivity ◽  
Split Ring Resonator ◽  
Debye Model ◽  
Split Ring ◽  
Liquid Samples ◽  
Microwave Sensor

A complex permittivity characterization method for liquid samples has been proposed. The measurement is carried out based on a self-designed microwave sensor with a split ring resonator (SRR), the unload resonant frequency of which is 5.05 GHz. The liquid samples in capillary are placed in the resonant zone of the fabricated senor for high sensitivity measurement. The frequency shift of 58.7 MHz is achieved when the capillary is filled with ethanol, corresponding a sensitivity of 97.46 MHz/μL. The complex permittivity of methanol, ethanol, isopropanol (IPA) and deionized water at the resonant frequency are measured and calibrated by the first order Debye model. Then, the complex permittivity of different concentrations of aqueous solutions of these materials are measured by using the calibrated sensor system. The results show that the proposed sensor has high sensitivity and accuracy in measuring the complex permittivity of liquid samples with volumes as small as 0.13 μL. It provides a useful reference for the complex permittivity characterization of small amount of liquid chemical samples. In addition, the characterization of an important biological sample (inositol) is carried out by using the proposed sensor.

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