By considering product thickness and features for your intended frequency band, you can identify the most suitable noise‑suppression/magnetic sheet.

TDK, as part of its continued efforts to bring environmentally friendly technical solutions to the market, has recently developed a plating process that enables manufacturing of thick, highly precise copper patterns on thin-film substrates without using typical exposure/etching technologies. The copper deposition can be to one or both sides of the thin-film substrate to reduce the coil’s [antenna’s] DC resistance (DCR). This innovation has been achieved through an electro-plating process that uses a nano-dispersed organic polymer called polypyrrole (PPy), a material solution from Achilles Corporation and is combined with TDK’s internal process technology. TDK’s unique copper plating process employs an "additive” methodology, where copper is plated only on defined areas to form the required pattern and is in direct contrast to standard methods that etch away from a copper layer in a subtractive process. Additionally, by incorporating TDK’s proprietary high-performance magnetic shielding materials, end-product miniaturization can be realized.

NFC steht für Near Field Communication, eine Form der kurzdistanzigen drahtlosen Kommunikation.
Geräte mit NFC-Funktionalität können Datenübertragung und Authentifizierung durch einfaches Annähern aneinander ausführen. Diese Funktion wird zunehmend rasch in Smartphones integriert.
Darüber hinaus wird deren Anwendung auf Peripheriegeräte wie beispielsweise tragbare Geräte wie Smartwatches erweitert.
NFC wird breitflächig in bargeldlosen Zahlungstransaktionen sowie zur Verknüpfung und Authentifizierung von Peripheriegeräten eingesetzt. Es birgt ein breites Anwendungspotenzial für die Verwirklichung einer berührungsfreien Gesellschaft.
Dieser Artikel stellt die Hauptkomponenten vor, die in NFC-Schaltkreisen zum Einsatz kommen, darunter NFC-Antennen, magnetische Folien, Induktoren für LC-Filter und Baluns für Einseiten-Schaltungen.

TDK Flexields are thin, flexible magnetic sheets [shields] that have numerous applications within the electronics industry. For NFC shield applications, the magnetic parameters’ behavior over frequency greatly differs in importance than for other uses. This White Paper will explain key material characteristics quantified through figures of merit, which gives the designer a better understanding of how they impact read range performance and are supported by actual testing results. Additionally, a step-by-step check list is provided to ensure the designer considers all relevant system factors when doing their magnetic shield selection process.

This article introduces a product overview of noise suppression sheet.

In mobile devices such as smartphones, protection devices such as chip varistors are used to prevent malfunction or damage to the circuit due to electrostatic discharge (ESD), but the noise suppression sheet from TDK known as “Flexield” IFL series is a product which is also effective in suppression of electrostatic discharge. Use case and its effectiveness are presented below.

Use case of the noise suppression sheet “Flexield” from TDK, and its effectiveness in compact electronic devices are presented below.