Unconditionally Stable MFLTD Method for the Full Wave Electromagnetic Simulation

2012 ◽  
Vol 60 (5) ◽  
pp. 2583-2586 ◽  
Author(s):  
Rashid Mirzavand ◽  
Abdolali Abdipour ◽  
Gholamreza Moradi ◽  
Masood Movahhedi
Keyword(s):  
Electromagnetic Simulation ◽  
Unconditionally Stable ◽  
Full Wave

Two-dimensional Wireless Power Relay Plane based on Rectangular Switchable Units

2021 ◽  
Vol 35 (11) ◽  
pp. 1450-1451
Author(s):  
Zhouyi Wu ◽  
Peiying Lin ◽  
Chao Ma ◽  
Zhiyi Tang ◽  
Ran Li ◽  
...  
Keyword(s):  
Transmission Efficiency ◽  
Electromagnetic Simulation ◽  
Two Dimensional ◽  
Power Transfer ◽  
Wireless Power ◽  
Resonant Frequencies ◽  
Full Wave ◽  
Power Exchange ◽  
Wireless Relay ◽  
Efficient Power

In this paper a two-dimensional wireless relay plane consists of square resonant units is proposed. Power transfer between the transmitting coil and receiver above any unit can be achieved by resonance through the shortest routes on the plane. The self-resonant frequencies of units on the planned route are adjusted to be identical for efficient power transfer, while units beyond the route are isolated from power exchange due to frequency shift. Full wave electromagnetic simulation is executed and analyzed. According to the simulation results, concentrated power transfer can be realized on the power relay plane, and the highest transmission efficiency is 73.93%.

Design of multi-layered bandpass filter with independently controllable triple-passband response

2014 ◽  
Vol 6 (6) ◽  
pp. 611-618 ◽  
Author(s):  
Yung-Wei Chen ◽  
Hung-Wei Wu ◽  
Yan-Kuin Su
Keyword(s):  
Frequency Response ◽  
Bandpass Filter ◽  
Bottom Layer ◽  
Wide Frequency Range ◽  
Electromagnetic Simulation ◽  
Frequency Range ◽  
High Isolation ◽  
Full Wave ◽  
Simulation Results ◽  
Good Agreement

In this paper, a new multi-layered triple-passband bandpass filter using embedded and stub-loaded stepped impedance resonators (SIRs) is proposed. The filter is designed to have triple-passband at 1.8, 2.4, and 3.5 GHz. The 1st and 2nd passbands (1.8/2.4 GHz) are simultaneously generated by controlling the impedance and length ratios of the embedded SIRs (on top layer). The 3rd passband (3.5 GHz) is generated by using the stub-loaded SIR (on bottom layer). Using the embedded SIR, the even modes can be tuned within very wide frequency range and without affecting the odd modes. Therefore, the design of multi-band filters with very close passbands can be easily achieved and having a high isolation between the passbands. The filter can provide the multi-path propagation to enhance the frequency response and achieving the compact circuit size. The measured results are in good agreement with the full-wave electromagnetic simulation results.

Shielding Effectiveness Simulation of SMT EMI Gaskets Utilizing ANSYS HFSS

2017 ◽  
Vol 2017 (1) ◽  
pp. 000109-000112
Author(s):  
Christopher M. Kerwien ◽  
Charlotte Blair
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Measurement Techniques ◽  
Electromagnetic Simulation ◽  
Shielding Effectiveness ◽  
Reverberation Chamber ◽  
Faraday Cage ◽  
Full Wave ◽  
Radiated Emissions ◽  
Ieee Standards

Abstract As more components populate smaller board areas, the risk of unwanted coupling between components increases. Shielding and radiated emissions tests outlined by IEEE standards such as IEC 61000-4-21 and ASTM4935D identify measurement techniques to quantify shielding effectiveness. In a PCB topology, shields enclose components to create a Faraday cage, but necessitate a method to ground and fasten the shield to the PCB. Typical methods include the use of gaskets, sealants and clips. This paper reviews a gasket methodology and validates a parameterized ANSYS HFSS simulation with the measured relationship between gasket configuration and shielding effectiveness. Surface mount, rectangular, compressible gaskets manufactured by W.L. Gore & Associates, Inc. are used in several configurations to shield a PCB radiator. Radiated emissions measurements are performed in an ETS-Lindgren reverberation chamber to evaluate shielding effectiveness for each configuration. ANSYS HFSS, a full wave Finite Element Method (FEM) electromagnetic simulation solver, is used to simulate each geometric configuration and is verified with measured results.

A band notch UWB bandpass filter using dual-stub-loaded multimode resonator with embedded spiral resonator

2013 ◽  
Vol 6 (2) ◽  
pp. 161-166 ◽  
Author(s):  
Pankaj Sarkar ◽  
Ishita Rakshit ◽  
Sharmili Adhikari ◽  
Manimala Pal ◽  
Rowdra Ghatak
Keyword(s):  
Insertion Loss ◽  
Close Agreement ◽  
Bandpass Filter ◽  
Stop Band ◽  
Ultra Wideband ◽  
Band Edge ◽  
Electromagnetic Simulation ◽  
Transmission Zeros ◽  
Full Wave ◽  
Sharp Band

This paper presents a band-notched ultra-wideband bandpass filter by loading a short stub and an asymmetric step impedance stub in a uniform impedance resonator. The passband extends from 3.04 to 10.8 GHz frequency. The multimode resonator provides a sharp band edge with measured transmission zeros at 2.59 and 13 GHz. The later one is due to source load coupling. The passband insertion loss is within 1.5 dB. The embedded spiral resonator introduces a notch at 5.25 GHz with attenuation of 15 dB. The filter exhibits a wide stop band till 15 GHz. The in band and out of band performance obtained from full-wave electromagnetic simulation and measurement are in close agreement.

Full-wave electromagnetic simulation of millimeter-wave active devices and circuits

1999 ◽  
Vol 54 (1-2) ◽  
pp. 30-42
Author(s):  
Samir Hammadi ◽  
Robert O Grondin ◽  
Samir El-Ghazaly ◽  
Stephen Goodnick
Keyword(s):  
Millimeter Wave ◽  
Electromagnetic Simulation ◽  
Active Devices ◽  
Full Wave
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