Analysis of conducted and radiated emission on a self-oscillating capacitive touch sensing circuit
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28140%2F24%3A63587738" target="_blank" >RIV/70883521:28140/24:63587738 - isvavai.cz</a>
Result on the web
<a href="https://ieeexplore.ieee.org/document/10585056" target="_blank" >https://ieeexplore.ieee.org/document/10585056</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.23919/EMCJapan/APEMCOkinaw58965.2024.10585056" target="_blank" >10.23919/EMCJapan/APEMCOkinaw58965.2024.10585056</a>
Alternative languages
Result language
angličtina
Original language name
Analysis of conducted and radiated emission on a self-oscillating capacitive touch sensing circuit
Original language description
With the advent of smartphones, there has been a recent increase in the use of capacitive touch sensing for various Human Machine Interfaces (HMI). Capacitive-based touch sensing provides higher flexibility and cost-effectiveness than, methodologies such as resistive-based touch sensing. However, Capacitive-based touch sensing is more prone to disturbances such as Electromagnetic interference (EMI) and noise due to temperature variation. This effect becomes more dominating as the sensing excitation frequency increases. Traditional capacitance to digital circuits, such as sigma-delta capacitive sensing, requires multiple clock cycles to measure sensing capacitance, thus necessitating higher frequency operation. In turn, this produces challenges in Electromagnetic Emission while also increasing its susceptibility to EMI, such as false or ghost touch due to exposure of the sensing electrodes to various frequency electric fields. This paper discusses the conducted electromagnetic emission behavior of an external excitation-frequency independent self-oscillating capacitance-to-time converter, where sensing is done with a single clock cycle, and discusses radiated Electromagnetic emission of the touch sensing electrode. The proposed approach is suitable for touch-sensing applications, mainly when used in a noisy EMI environment, such as inside a vehicle within the Automotive industry.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20201 - Electrical and electronic engineering
Result continuities
Project
—
Continuities
V - Vyzkumna aktivita podporovana z jinych verejnych zdroju
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
PROCEEDINGS OF THE 2024 IEEE JOINT INTERNATIONAL SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY, SIGNAL & POWER INTEGRITY: EMC JAPAN/ASIAPACIFIC INTERNATIONAL SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY, EMC JAPAN/APEMC OKINAWA 2024
ISBN
978-4-88552-347-2
ISSN
2162-7673
e-ISSN
—
Number of pages
4
Pages from-to
300-303
Publisher name
IEEE
Place of publication
New York
Event location
Okinawa
Event date
May 20, 2024
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
001282033600093