scholarly journals Fabrication and Characteristics of a SOI Three-Axis Acceleration Sensor Based on MEMS Technology

Micromachines ◽  
2019 ◽  
Vol 10 (4) ◽  
pp. 238 ◽  
Author(s):  
Zhao ◽  
Wang ◽  
Wen
Keyword(s):  
Printed Circuit Board ◽  
Simulation Software ◽  
Silicon On Insulator ◽  
Circuit Board ◽  
Acceleration Sensor ◽  
Microelectromechanical System ◽  
Printed Circuit ◽  
Element Simulation ◽  
Acceleration Vector ◽  
Mems Technology

A silicon-on-insulator (SOI) piezoresistive three-axis acceleration sensor, consisting of four L-shaped beams, two intermediate double beams, two masses, and twelve piezoresistors, was presented in this work. To detect the acceleration vector (ax, ay, and az) along three directions, twelve piezoresistors were designed on four L-shaped beams and two intermediate beams to form three detecting Wheatstone bridges. A sensitive element simulation model was built using ANSYS finite element simulation software to investigate the cross-interference of sensitivity for the proposed sensor. Based on that, the sensor chip was fabricated on a SOI wafer by using microelectromechanical system (MEMS) technology and packaged on a printed circuit board (PCB). At room temperature and VDD = 5.0 V, the sensitivities of the sensor along x-axis, y-axis, and z-axis were 0.255 mV/g, 0.131 mV/g, and 0.404 mV/g, respectively. The experimental results show that the proposed sensor can realize the detection of acceleration along three directions.

A Design of Printed Inverted-F Antenna for RFID Tag at 5.8 GHz

2013 ◽  
Vol 427-429 ◽  
pp. 1293-1296
Author(s):  
Yan Zhong Yu ◽  
Ji Zhen Ni ◽  
Xian Hui Li
Keyword(s):  
High Frequency ◽  
Printed Circuit Board ◽  
Ground Plane ◽  
Simulation Software ◽  
Circuit Board ◽  
Electromagnetic Simulation ◽  
Antenna Structure ◽  
Rfid Tag ◽  
Printed Circuit ◽  
Substrate Layer

A printed inverted-F antenna for RFID tag at 5.8 GHz is designed in this paper. The antenna structure consists of an inverted-F patch, a substrate layer, and a ground plane. To reduce costs, the FR4 is selected as the material of substrate layer, which is used commonly in PCB (Printed Circuit Board). Its relative permittivity is 4.4 and a loss tangent is 0.02. The inverted-F patch and ground plane are laid on/under the substrate layer respectively. The designed antenna is modeled, simulated and optimized by using HFSS (high frequency electromagnetic simulation software). Simulation results demonstrate that the printed inverted-F antenna can satisfy the requirements of RFID Tag applications.

scholarly journals A Practical Learning Simulation Software with Specific Applications for Printed Circuit Board Soldering/De-soldering Ability Certifications

2020 ◽  
Vol 3 (10) ◽  
Author(s):  
Chin-Ming Hsu ◽  
Keyword(s):  
Printed Circuit Board ◽  
Simulation Software ◽  
Circuit Board ◽  
Simulation Tool ◽  
Printed Circuit ◽  
Technical Students ◽  
Component Identification ◽  
Technology Applications ◽  
Soldering Technology ◽  
Development Institution

This paper mainly develops a practical learning printed circuit board (PCB) soldering/de-soldering simulation software to be the reference of the specialized characteristic curriculum for a school. The proposed learning simulation software can train students with the soldering knowledge, the soldering technology, the electronic component identification, and the usage of the instruments. The research aims at inspiring students to be interested in circuitry soldering technology and have different thoughts on electronic/information/mechanical related technology applications. In this paper, the developed practical learning simulation software utilizes Visual Basic programming language as the developing tool and adopts the Bluetooth voice- activated tracking self-propelled vehicle and the number guessing game main control PCBs as the circuitry soldering training targets which was developed by Taiwan Embedded Microcontroller Development Institution (TEMI). The proposed simulation tool has been used as the learning exploration with the students at Kao Yuan University in Kaohsiung City, Taiwan. According to the experimental results, the developed simulation tool could provide three contributions. First, it can be an interactive- and interesting-oriented learning tool. Second, it can cultivate and inspire students learning soldering technology efficiently and effectively to meet the needs in the industry. Third, it can cultivate more professional and technical students actively participate in seeking solutions to problems.

Practical, economical, and simple technique for teaching microstrip antenna design

2019 ◽  
pp. 002072091989590
Author(s):  
Euclides Lourenço Chuma ◽  
Yuzo Iano
Keyword(s):  
Microstrip Antenna ◽  
Printed Circuit Board ◽  
Simple Technique ◽  
Simulation Software ◽  
Theory And Practice ◽  
Circuit Board ◽  
Antenna Design ◽  
Electromagnetic Simulation ◽  
Printed Circuit ◽  
Antenna Theory

This article presents a simple and economical technique for constructing a microstrip antenna for use in teaching the theory and practice of microstrip antenna design. The hardware components used to manufacture this microstrip antenna include an FR-4-printed circuit board, conductive copper tape, pencil, ruler, and scissors. Electromagnetic simulation software is an optional but helpful contribution to the process of teaching microstrip antenna theory.

Design and theoretical analysis of current transformer based on B-dot planar printed circuit board coil

Sensor Review ◽  
2017 ◽  
Vol 37 (3) ◽  
pp. 282-288
Author(s):  
Yanhang Zhao ◽  
Jingang Wang ◽  
Shoupeng Ban ◽  
Xueqi Hu ◽  
Diancheng Si
Keyword(s):  
Printed Circuit Board ◽  
Current Transformer ◽  
Circuit Board ◽  
Iron Core ◽  
Performance Volume ◽  
Content Type ◽  
Printed Circuit ◽  
Element Simulation ◽  
New Type ◽  
Transformer Model

Purpose The purpose of this paper is to design a current transformer model based on the principle of B-dot. It can reflect the change of transmission line current and meet the requirement of automation and intelligence for current measurement in power system. Design/methodology/approach In this paper, a new type of current transformer is designed on the principle of B-dot, which has the structure of the inverse series of planar air core coils and the form of printed circuit board (PCB). With this structure, the current transformers can induce magnetic field quite well. The finite element simulation for the current transformer with n layers structure is conducted in the Maxwell, which help to optimize the design of the current transformer. Findings By setting up the experimental platform, the experiment of the current transformer is carried out. The results of the test show that the measurement accuracy can satisfy the requirement of measurement. Besides, the new current transformer has good transient characteristics and can meet the needs of the development of smart grid. Originality value The new type of current transformer is based on the principle of B-dot, which is designed with a new type of non-contact PCB hollow coil current transformer. It has no iron core, no ferromagnetic effect and the phenomenon of ferromagnetic resonance. It has great progress in its insulation performance, volume and bandwidth response. In addition, the planar hollow coil of the inverse series structure can make the structure more accurate.

scholarly journals Design of a continuously tunable reflectarray element for 5G metrology in the k-band

2020 ◽  
Vol 18 ◽  
pp. 1-5
Author(s):  
Thomas Harz ◽  
Thomas Kleine-Ostmann ◽  
Thorsten Schrader
Keyword(s):  
High Frequency ◽  
Printed Circuit Board ◽  
Simulation Software ◽  
Circuit Board ◽  
Control Voltage ◽  
Wave Excitation ◽  
Varactor Diode ◽  
Printed Circuit ◽  
Commercial Off The Shelf ◽  
K Band

Abstract. We introduce a new tunable reflectarray element for an operation frequency of 26 GHz in the k-band. It is shown that a 340∘ continuous tunning range of the reflected wave can be accomplished by using an aperture-coupled patch antenna with only one single varactor diode. The simplified design and the small needed space make it usable for k-band reflectarrays with many elements. The functionality of the reflectarray element is explained and the crucial parts are analyzed. The approach to get a full phase shift is discussed in detail. A bias-T is developed to provide the control voltage to the varactor diode without interfering with the high frequency path. The high frequency path and the DC-path are decoupled by 39 dB using a bias-T. A commercial off-the-shelf varactor diode is selected and its functionality at 26 GHz is verified. Therefore, a test printed circuit board with through, reflect, line standards is developed to de-embed the varactor diode and to evaluate it with a vector network analyzer. The reflectarray is simulated in a unit cell with plane wave excitation and periodic boundary condition using the simulation software package CST Microwave Studio™.

Characteristics of Radiated Emission from a Printed Circuit Board with a Slit

2012 ◽  
Vol 132 (6) ◽  
pp. 404-410 ◽  
Author(s):  
Kenichi Nakayama ◽  
Kenichi Kagoshima ◽  
Shigeki Takeda
Keyword(s):  
Printed Circuit Board ◽  
Circuit Board ◽  
Printed Circuit ◽  
Radiated Emission

Confirming the Signal Integrity in Transmission of Digital Signals on Microstrip Straight Circuits via the Eye Diagrams

2014 ◽  
Vol 5 (1) ◽  
pp. 737-741
Author(s):  
Alejandro Dueñas Jiménez ◽  
Francisco Jiménez Hernández
Keyword(s):  
Integrated Circuits ◽  
Printed Circuit Board ◽  
Signal Integrity ◽  
High Volume ◽  
Information Storage ◽  
Circuit Board ◽  
Electromagnetic Simulation ◽  
Electronic Systems ◽  
Digital Signals ◽  
Printed Circuit

Because of the high volume of processing, transmission, and information storage, electronic systems presently requires faster clock speeds tosynchronizethe integrated circuits. Presently the “speeds” on the connections of a printed circuit board (PCB) are in the order of the GHz. At these frequencies the behavior of the interconnects are more like that of a transmission line, and hence distortion, delay, and phase shift- effects caused by phenomena like cross talk, ringing and over shot are present and may be undesirable for the performance of a circuit or system.Some of these phrases were extracted from the chapter eight of book “2-D Electromagnetic Simulation of Passive Microstrip Circuits” from the corresponding author of this paper.

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