A Microstrip Stepped-Impedance Resonator Bandpass Filter Based on Inductive Coupling

Frequenz ◽  
2019 ◽  
Vol 73 (1-2) ◽  
pp. 7-11
Author(s):  
X. C. Zhang ◽  
X. Chen ◽  
L. Sun ◽  
Y. S. Huang ◽  
X. F. Gao
Keyword(s):  
Theoretical Analysis ◽  
Bandpass Filter ◽  
Higher Order ◽  
Experimental Results ◽  
Inductive Coupling ◽  
Successful Design ◽  
Stepped Impedance Resonator ◽  
Good Agreement

Abstract A simple and successful design for a microstrip stepped-impedance resonator (SIR) bandpass filter (BPF) based on inductive coupling is presented. It is well known that SIRs are used to shift or suppress the higher order frequencies. In order to achieve compact circuit size, a perceptual stepped-impedance resonator is utilized. Based on theoretical analysis, this resonator can shift the spurious frequency to 3.8f0. The experimental results show good agreement with theory and simulations.

PHOTOINDUCED NONLINEAR OCTUPOLAR POLARIZATION: TRANSIENT AND PERMANENT REGIMES

1996 ◽  
Vol 05 (04) ◽  
pp. 653-670 ◽  
Author(s):  
CÉLINE FIORINI ◽  
JEAN-MICHEL NUNZI ◽  
FABRICE CHARRA ◽  
IFOR D.W. SAMUEL ◽  
JOSEPH ZYSS
Keyword(s):  
Theoretical Analysis ◽  
Second Harmonic ◽  
Experimental Results ◽  
Polar Field ◽  
Rotational Spectrum ◽  
Dual Frequency ◽  
One Dimensional ◽  
Ethyl Violet ◽  
Disperse Red 1 ◽  
Good Agreement

An original poling method using purely optical means and based on a dual-frequency interference process is presented. We show that the coherent superposition of two beams at fundamental and second-harmonic frequencies results in a polar field with an irreducible rotational spectrum containing both a vector and an octupolar component. This enables the method to be applied even to molecules without a permanent dipole such as octupolar molecules. After a theoretical analysis of the process, we describe different experiments aiming at light-induced noncentrosymmetry performed respectively on one-dimensional Disperse Red 1 and octupolar Ethyl Violet molecules. Macroscopic octupolar patterning of the induced order is demonstrated in both transient and permanent regimes. Experimental results show good agreement with theory.

Dual-wideband bandpass filter with independently controllable center frequencies and wide stopband

2017 ◽  
Vol 10 (1) ◽  
pp. 93-99 ◽  
Author(s):  
Yang Xiong ◽  
Litian Wang ◽  
Doudou Pang ◽  
Wei Zhang ◽  
Fan Zhang ◽  
...  
Keyword(s):  
Bandpass Filter ◽  
Experimental Results ◽  
The Other ◽  
Mode Analysis ◽  
Center Frequency ◽  
Analysis Method ◽  
Measurement Results ◽  
Mode Resonator ◽  
Good Agreement

In this paper, a dual-wideband bandpass filter (BPF) with independently controllable center frequencies (CFs) and wide stopband suppression is presented using a new quintuple-mode resonator (QMR). By applying the classical odd-/even-mode analysis method, the resonant characteristics of the new QMR have been analyzed. It shows that five modes can be excited, and two of them can be employed to form the lower passband, while the other three modes contribute to the higher passband. For verification, a dual-wideband BPF using the new QMR is designed, fabricated, and tested. Experimental results show that the CFs of the dual-wideband BPF centered at 2.96 GHz and 5.695 GHz with 3 dB fractional bandwidths of 27.7 and 23.4%, respectively. In addition, 20-dB suppression in upper-stopband ranges from 2.23 to 4.04f0, where f0 is the center frequency of the first passband. The measurement results are in good agreement with the prediction results.

The Separation of Light Gaseous Isotopes by Mass Diffusion Columns II

1964 ◽  
Vol 19 (6) ◽  
pp. 747-755
Author(s):  
W. J. De Wet ◽  
J. Los
Keyword(s):  
Theoretical Analysis ◽  
Mass Diffusion ◽  
Experimental Results ◽  
The Other ◽  
Countercurrent Flow ◽  
Gas Solubility ◽  
Flow Rates ◽  
Mixing Effects ◽  
Other Hand ◽  
Good Agreement

The design of mass diffusion columns operated with partition membranes, for the separation of light gaseous isotopes, is discussed. A theoretical analysis of experimental results obtained indicates that a good agreement between experimental results and theory is only obtained at low column pressures and moderate countercurrent flow rates. At fairly low countercurrent flow rates mixing effects due to viscous dragging and gas solubility by the condensate appear to be considerable whereas excessively high countercurrent flow rates, on the other hand, also seem undesirable. Some suggestions are proposed to obviate impairing effects at least to some extent.

Cumulative Fatigue Damage Under Stress-Controlled Conditions

1971 ◽  
Vol 93 (4) ◽  
pp. 691-698 ◽  
Author(s):  
Thang Bui Quoc ◽  
J. Dubuc ◽  
A. Bazergui ◽  
A. Biron
Keyword(s):  
Theoretical Analysis ◽  
Fatigue Damage ◽  
Experimental Results ◽  
Published Data ◽  
Mean Stress ◽  
Remaining Life ◽  
Random Loading ◽  
Controlled Conditions ◽  
Cumulative Fatigue Damage ◽  
Good Agreement

A theoretical analysis of uniaxial cumulative fatigue damage is presented together with a large number of experimental results on unnotched specimens of A-201 and A-517 steels. The theory developed permits the prediction of fatigue curves for stress-controlled conditions with zero or positive mean stress as well as the evaluation of the damage accumulated during a fatigue test and hence the prediction of the remaining life of a specimen. Theory is in good agreement with the experimental results as well as with published data on other materials. The development may be extended to other types of tests such as strain-controlled or random loading conditions.

scholarly journals Novel Notched UWB Filter Using Stepped Impedance Stub Loaded Microstrip Resonator and Spurlines

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Ramkumar Uikey ◽  
Ramanand Sagar Sangam ◽  
Kakumanu Prasadu ◽  
Rakhesh Singh Kshetrimayum
Keyword(s):  
Bandpass Filter ◽  
Experimental Results ◽  
Microstrip Resonator ◽  
Resonant Frequencies ◽  
Notched Band ◽  
Band Filter ◽  
5 Ghz ◽  
Good Agreement

This paper presents a novel ultrawideband (UWB) bandpass filter using stepped impedance stub loaded microstrip resonator (SISLMR). The proposed resonator is so formed to allow its four resonant frequencies in the UWB passband, which extends from 3.1 GHz to 10.6 GHz. Moreover, two spurline sections are employed to create a sharp notched-band filter for suppressing the signals of 5 GHz WLAN devices. Experimental results of the fabricated filters are in good agreement with the HFSS simulations and validate the design.

Effects of changing the M2+ cation on the crystal structure and optical properties of divalent samarium-doped MAl2Si2O8 (M = Ca, Sr, Ba)

RSC Advances ◽  
2015 ◽  
Vol 5 (25) ◽  
pp. 19734-19742 ◽  
Author(s):  
Ling Li ◽  
Xiaoguang Liu
Keyword(s):  
Crystal Structure ◽  
Optical Properties ◽  
Theoretical Analysis ◽  
Experimental Results ◽  
Photoluminescence Properties ◽  
Good Agreement

The photoluminescence properties and theoretical analysis of Sm2+ doped MAl2Si2O8 (M = Ca, Sr, Ba) were reported. The theoretical analysis is in good agreement with our experimental results.

Compact dual-band bandpass filter using open stub-loaded stepped impedance resonator with cross-slots

2016 ◽  
Vol 9 (2) ◽  
pp. 269-274 ◽  
Author(s):  
Bukuru Denis ◽  
Kaijun Song ◽  
Fan Zhang
Keyword(s):  
Bandpass Filter ◽  
Design Concept ◽  
Dual Band ◽  
High Isolation ◽  
Transmission Zeros ◽  
Full Wave ◽  
Measurement Results ◽  
Stepped Impedance Resonator ◽  
Simulation Results ◽  
Good Agreement

A compact dual-band bandpass filter using stub-loaded stepped impedance resonator (SLSIR) with cross-slots is presented. The symmetric SLSIR is analyzed using even- and odd-mode techniques. Design equations are derived and they are used to guide the design of the circuits. Two passbands can be easily tuned by cross-slots and open stubs. Transmission zeros among each passbands are created, resulting in high isolation and frequency selectivity. An experimental circuit is fabricated and evaluated to validate the design concept. The fabricated filter is compact with 19.76 × 12.7 mm2. The measurement results are in good agreement with the full-wave simulation results.

scholarly journals Theoretical and Experimental Study of Split Semi Horse Shoe Structure

2018 ◽  
Vol 7 (5) ◽  
pp. 131-136
Author(s):  
G. Singh ◽  
S. S. Pattnaik
Keyword(s):  
Experimental Study ◽  
Theoretical Analysis ◽  
Equivalent Circuit ◽  
Radiation Pattern ◽  
Patch Antenna ◽  
Circuit Theory ◽  
Experimental Results ◽  
Effective Parameters ◽  
Metamaterial Structure ◽  
Good Agreement

In this paper a new planar metamaterial structure that looks like semi-horse shoe in shape (SSHSS) is designed and simulated. Theoretical analysis of proposed structure done using equivalent circuit theory. Medium effective parameters are extracted using modified NRW approach which proved the metamaterial property of the new unit cell. Radiation pattern, directivity and gain of the new structure were illustrated which gives the possibility of using SSHSS as the antenna. Proposed structure shows multiband characteristics. This antenna shows high directivity (7.92 dBi, 7.86 dBi, 10.11 dBi) and moderate gain (2.55 dBi, 3.90 dBi, 5.07 dBi) at 5.83 GHz, 8.41 GHz, 10.68 GHz respectively. RT duroid is used for fabrication of prototype of the proposed structure. This new structure can be used as metamaterial inspired antenna as well as normal patch antenna. Experimental results shows good agreement with simulated and theoretical results.The proposed structure has been simulated using IE3D electromagnetic simulator.

scholarly journals A Novel Method for Measurement of Capacitances and Their Loss Factors

1995 ◽  
Vol 17 (4) ◽  
pp. 239-243
Author(s):  
Muhammad Taher Abuelma'atti ◽  
Hussain Abdullah Alzaher ◽  
Sami Saud Buhalim
Keyword(s):  
Theoretical Analysis ◽  
Simple Technique ◽  
Experimental Results ◽  
Sinusoidal Oscillator ◽  
Novel Method ◽  
Good Agreement ◽  
Loss Factors

A novel and simple technique for measurement of capacitances and their losses is presented. The method is based on a partially active-R sinusoidal oscillator. Experimental results are in good agreement with the theoretical analysis.

scholarly journals Output of MEMS Piezoelectric Energy Harvester of Double-Clamped Beams with Different Width Shapes

Materials ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2330 ◽  
Author(s):  
Lei Jin ◽  
Shiqiao Gao ◽  
Xiyang Zhang ◽  
Qinghe Wu
Keyword(s):  
Theoretical Analysis ◽  
Energy Harvester ◽  
Experimental Results ◽  
Beam Shape ◽  
Microelectromechanical System ◽  
Micro Scale ◽  
Piezoelectric Energy ◽  
Clamped Beams ◽  
Different Shapes ◽  
Good Agreement

For a microelectromechanical system (MEMS) piezoelectric energy harvester consisting of double-clamped beams, the effects of both beam shape and electrode arrangement on the voltage outputs are analyzed. For two kinds of harvester structures including millimeter-scale and micro-scale, and different shapes including rectangular, segmentally trapezoidal and concave parabolic are taken into account. Corresponding electric outputs are calculated and tested. Their results are in good agreement with each other. The experimental results validate the theoretical analysis.

Sign in / Sign up

Export Citation Format

Share Document