A Compact and Vialess Vertical Microstrip-to-Microstrip Differential Transition

Frequenz ◽  
2019 ◽  
Vol 73 (1-2) ◽  
pp. 19-24
Author(s):  
Wei Cheng ◽  
Lin Li ◽  
Jingjing Du ◽  
Junxiu Yang ◽  
Xiaowei Gu
Keyword(s):  
Equivalent Circuit ◽  
Design Method ◽  
Signal Transmission ◽  
Equivalent Circuit Model ◽  
Bottom Layer ◽  
Wide Frequency Range ◽  
Circuit Model ◽  
Half Wavelength ◽  
Compact Size ◽  
Operating Bandwidth

Abstract In this paper, a new compact, vialess and vertical microstrip-to-microstrip differential transition is presented based on half-wavelength slotline structure. The equivalent-circuit model is constructed, and theoretical analyses based on equivalent circuit model reveal that good differential mode (DM) signal transmission between the top- and bottom-layer differential microstrip lines can be achieved over a wide frequency range determined while the common mode (CM) signal is rejected. Moreover, the systematic design method is presented to extract the values of electrical parameters from prescribed performance in terms of its operating bandwidth and ripple levels. In addition, owing to the employment of half-wavelength slot, the proposed differential transition has a compact size. Finally, the proposed differential transition and design theories are well vindicated by an exemplary circuit centered at 2.45 GHz with the measured relative frequency bandwidth (FBW) of 114 %.

scholarly journals Simple design method of FSS radome analysis using equivalent circuit model

2011 ◽  
Vol 8 (23) ◽  
pp. 2002-2009 ◽  
Author(s):  
Kyung-Won Lee ◽  
Yi-Ru Jeong ◽  
Ic-Pyo Hong ◽  
Myung-Gun Lee ◽  
Heoung-Jae Chun ◽  
...  
Keyword(s):  
Equivalent Circuit ◽  
Design Method ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Simple Design

scholarly journals Equivalent circuit of a ferrite-wound inductor in a wide frequency range (0 Hz – 500 MHz)

2022 ◽  
Vol 24 (4) ◽  
pp. 25-45
Author(s):  
Vladimir F. Dmitrikov ◽  
Dmitry V. Shushpanov
Keyword(s):  
Equivalent Circuit ◽  
Complex Impedance ◽  
Equivalent Circuit Model ◽  
Mutual Effect ◽  
Wide Frequency Range ◽  
Circuit Model ◽  
Core Material ◽  
Physical Processes ◽  
Measured Impedance ◽  
Wire Resistance

Based on the measured impedance of the inductors wound on various ferrite cores and with a different number of turns, an equivalent high frequency (0 Hz 500 MHz) circuit model was built. The equivalent circuit model was built taking into account the physical processes occurring in the inductor: effect of wire resistance, effect of core material, mutual effect of wire and core material. The attempt explaining why the frequency characteristics (modulus and phase) of the inductor complex impedance have such a character in a wide frequency band (up to 500 MHz) was made. It was shown that for constructing an equivalent circuit model (structure and parameters), measuring only the inductors resistance modulus is not enough. It is also necessary to measure the phase of the inductor complex resistance, which is ignored in many works on the synthesis of an e inductor equivalent circuit.

A Design Method for Synthesizing Wideband Band-Stop FSS via Its Equivalent Circuit Model

2017 ◽  
Vol 16 ◽  
pp. 2721-2725 ◽  
Author(s):  
Ning Liu ◽  
Xianjun Sheng ◽  
Chunbo Zhang ◽  
Jingjing Fan ◽  
Dongming Guo
Keyword(s):  
Equivalent Circuit ◽  
Design Method ◽  
Equivalent Circuit Model ◽  
Circuit Model

scholarly journals Particle Swarm Optimization Algorithm-Based Design Method for Ultrasonic Transducers

Micromachines ◽  
2020 ◽  
Vol 11 (8) ◽  
pp. 715
Author(s):  
Dongdong Chen ◽  
Jianxin Zhao ◽  
Chunlong Fei ◽  
Di Li ◽  
Yuanbo Zhu ◽  
...  
Keyword(s):  
Particle Swarm Optimization ◽  
Equivalent Circuit ◽  
Design Method ◽  
Particle Swarm ◽  
Equivalent Circuit Model ◽  
Pso Algorithm ◽  
Circuit Model ◽  
Center Frequency ◽  
Swarm Optimization ◽  
And Performance

In order to improve the fabrication efficiency and performance of an ultrasonic transducer (UT), a particle swarm optimization (PSO) algorithm-based design method was established and combined with an electrically equivalent circuit model. The relationship between the design and performance parameters of the UT is described by an electrically equivalent circuit model. Optimality criteria were established according to the desired performance; then, the design parameters were iteratively optimized using a PSO algorithm. The Pb(ZrxTi1−x)O3 (PZT) ceramic UT was designed by the proposed method to verify its effectiveness. A center frequency of 6 MHz and a bandwidth of −6 dB (70%) were the desired performance characteristics. The optimized thicknesses of the piezoelectric and matching layers were 255 μm and 102 μm. The experimental results agree with those determined by the equivalent circuit model, and the center frequency and −6 dB bandwidth of the fabricated UT were 6.3 MHz and 68.25%, respectively, which verifies the effectiveness of the developed optimization design method.

An Equivalent Circuit Model for Vertical Comb Drive MEMS Optical Scanner Controlled by Pulse Width Modulation

2012 ◽  
Vol 132 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Satoshi Maruyama ◽  
Muneki Nakada ◽  
Makoto Mita ◽  
Takuya Takahashi ◽  
Hiroyuki Fujita ◽  
...  
Keyword(s):  
Equivalent Circuit ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Equivalent Circuit Model ◽  
Circuit Model ◽  
Comb Drive ◽  
Optical Scanner

scholarly journals A Novel, Improved Equivalent Circuit Model for Double-Sided Linear Induction Motor

Electronics ◽  
2021 ◽  
Vol 10 (14) ◽  
pp. 1644
Author(s):  
Qian Zhang ◽  
Huijuan Liu ◽  
Tengfei Song ◽  
Zhenyang Zhang
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Equivalent Circuit ◽  
Skin Effect ◽  
Equivalent Circuit Model ◽  
Element Model ◽  
Circuit Model ◽  
End Effects ◽  
3D Finite Element ◽  
Linear Induction

A novel, improved equivalent circuit model of double-sided linear induction motors (DLIMs) is proposed, which takes the skin effect and the nonzero leakage reactance of the secondary, longitudinal, and transverse end effects into consideration. Firstly, the traditional equivalent circuit with longitudinal and transverse end effects are briefly reviewed. Additionally, the correction coefficients for longitudinal and transverse end effects derived by one-dimensional analysis models are given. Secondly, correction factors for skin effect, which reflects the inhomogeneous air gap magnetic field vertically, and the secondary leakage reactance are derived by the quasi-two-dimensional analysis model. Then, the proposed equivalent circuit is presented, and the excitation reactance and secondary resistance are modified by the correction coefficients derived from the three analytical models. Finally, a three-dimensional (3D) finite element model is used to verify the proposed equivalent circuit model under varying air gap width and frequency, and the results are also compared with that of the traditional equivalent circuit models. The calculated thrust characteristics by the proposed equivalent circuit and 3D finite element model are experimentally validated under a constant voltage–frequency drive.

Sign in / Sign up

Export Citation Format

Share Document