Characterization of the input impedance of household appliances in the FCC frequency band

2017 ◽  
Author(s):  
M. Ait Ou Kharraz ◽  
C. Lavenu ◽  
P. Jensen ◽  
D. Picard ◽  
M. Serhir
Keyword(s):  
Frequency Band ◽  
Input Impedance ◽  
Household Appliances

Additive technology applied to the realization of K-band microwave terminations: reproducibility improvement

2018 ◽  
Vol 10 (1) ◽  
pp. 3-8
Author(s):  
Azar Maalouf ◽  
Ronan Gingat ◽  
Vincent Laur
Keyword(s):  
3D Printing ◽  
Frequency Band ◽  
Rectangular Waveguide ◽  
Three Dimensional ◽  
Low Density ◽  
Support Material ◽  
Additive Technology ◽  
3D Printed ◽  
K Band

This study examines K-band rectangular waveguide terminations with three-dimensional (3D)-printed loads, and proposes an Asymmetrical Tapered Wedge topology. This geometry shows a good tradeoff between microwave performance and 3D-printing issues (printing directions and support material requirements), thus improving noticeably the reproducibility of the devices. The effect of the density of the 3D-printed load on the reflection parameter of the termination was investigated. Even for a low density, reflection level remained below −27.5 dB between 18 and 26.5 GHz. Reproducibility was demonstrated by the characterization of six loads that were 3D printed under the same conditions. Measurements demonstrate that a maximum reflection parameter level of −33.5 dB can be ensured over the whole frequency band without any post-machining of the 3D-printed devices.

Input Impedance Characterization of a Single-Phase PFC in D-Q Frame

2021 ◽  
Author(s):  
Qing Lin ◽  
Bo Wen ◽  
Rolando Burgos ◽  
Keyue Shan ◽  
Ye Tang ◽  
...  
Keyword(s):  
Input Impedance ◽  
Single Phase ◽  
Impedance Characterization

Electromagnetic Characterization of Hemp Concrete in the 2.4 GHz WiFi Frequency Band

2018 ◽  
Author(s):  
Mehdi Ferhat ◽  
Fares Bennai ◽  
Badreddine Ratni ◽  
Eric Vourch ◽  
Kamilia Abahri ◽  
...  
Keyword(s):  
Frequency Band

scholarly journals Fast Frequency Sweep Technique Based on Segmentation for the Acceleration of the Electromagnetic Analysis of Microwave Devices

2019 ◽  
Vol 9 (6) ◽  
pp. 1118
Author(s):  
Juan Martinez ◽  
Angel Belenguer ◽  
Héctor Esteban
Keyword(s):  
Frequency Band ◽  
Rectangular Waveguide ◽  
Building Blocks ◽  
Frequency Sweep ◽  
Discrete Frequency ◽  
Natural Cubic Splines ◽  
Communication Devices ◽  
Waveguide Filter ◽  
Electromagnetic Solver

The characterization of communication devices in a certain frequency band can be accelerated if a fast frequency sweep technique is used instead of a discrete frequency sweep. Existing fast frequency sweep techniques are either complex or specific for a certain electromagnetic solver. In this work, a new fast frequency sweep method is proposed that consists in segmenting the device under analysis into simple building blocks. Each building block is characterized with a generalized (multimode) circuital matrix whose elements present a simple and flat frequency response that is interpolated using natural cubic splines with very few points. In this way, the response of each block along the whole frequency band is obtained efficiently and accurately with as many frequency points as desired. Then, the circuital matrices of all the blocks are cascaded and the circuital matrix of the whole device in obtained. The new fast frequency sweep was successfully applied to the analysis of different types of devices (all metallic rectangular waveguide filter, dielectric loaded rectangular waveguide filter, and substrate integrated waveguide filter). The computational times were reduced to 15% or 19%, depending on the device, when compared with a discrete frequency sweep using the same electromagnetic solver.

Notice of Retraction: Direct Characterization of Grounding System Wide-Band Input Impedance

2018 ◽  
Vol 60 (1) ◽  
pp. 292-293 ◽  
Author(s):  
Babak Honarbakhsh ◽  
Hamidreza Karami ◽  
Keyhan Sheshyekani
Keyword(s):  
Input Impedance ◽  
Wide Band ◽  
Grounding System
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