Challenges in full wave electromagnetic simulation of very compact planar antennas

2007 ◽  
Author(s):  
A. Vasylchenko ◽  
Y. Schols ◽  
W. De Raedt ◽  
G.A.E. Vandenbosch
Keyword(s):  
Electromagnetic Simulation ◽  
Planar Antennas ◽  
Full Wave ◽  
Compact Planar

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

Compact Planar Antennas for Short-Range Wireless Automotive Communication

2006 ◽  
Vol 55 (4) ◽  
pp. 1425-1435 ◽  
Author(s):  
B. Al-Khateeb ◽  
V. Rabinovich ◽  
B. Oakley ◽  
N. Alexandrov
Keyword(s):  
Short Range ◽  
Planar Antennas ◽  
Compact Planar

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.

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