Design constraints for NFC devices / / Dominique Paret

• Record Nr.: UNINA9910822518003321
• Autore: Paret Dominique
• Pubbl/distr/stampa: Hoboken, New Jersey : , : ISTE Ltd/John Wiley and Sons Inc, , 2016
• ISBN: 1-119-29221-2; 1-119-29220-4
• Descrizione fisica: 1 online resource (226 p.)
• Collana: Waves series
• Disciplina: 621.4
• Soggetti: Near-field communication
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Description based upon print version of record.
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: Cover; Title Page; Copyright; Contents; Acknowledgements; Preface: Why and for Whom is this Book Written?; Why; For whom; Warning; Introduction; PART 1: Introduction to - and Reminders About - NFC; Introduction to Part 1; 1: Recap of the Principles Employed in NFC; 1.1. The physical fundaments of "contactless" and NFC; 1.1.1. Phenomenon of propagation and radiation; 1.1.2. Classification of fields and spatial regions; 1.1.3. Spatial regions; 1.1.4. Far field: r >> λ/2π (Fraunhofer zone); 1.1.5. Intermediary field: r approximately equal to λ (Fresnel zone); 1.1.6. Near field: r << λ/2π (Rayleigh zone) and the origin of NFC1.1.7. Remarks on contactless, RFID and NFC applications; 1.2. The concept of NFC; 1.2.1. Biot-Savart law; 1.2.2. Field H at a point on the axis of a circular antenna; 1.2.3. Decrease in the field H as a function of "d"; 1.2.4. Field H at a point on the axis of a rectangular antenna; 2: Normative Constraints of NFC; 2.1. Introduction; 2.1.1. Normative, regulatory and NFC market constraints; 2.1.2. A little bit of vocabulary; 2.1.3. Norm; 2.1.4. Standard; 2.2. Normative constraints; 2.2.1. Uplink from initiator to targets; 2.2.1.1. Forward link - from the initiator to the target2.2.1.1.1. Supplied energy and the concept of supplying the target; 2.2.1.1.2. Remote-powered or batteryless targets; 2.2.1.1.3. Battery-assisted targets; 2.2.1.2. Return link: from target to initiator; 2.2.1.2.1. Active and passive targets; "Passive" targets; "Active" targets; 2.2.1.2.2. Return communication from targets to the initiator; Load modulation; Passive ; load modulation (PLM); Active load modulation (ALM); Active load modulation - ALM in NFC passive mode; Active load modulation - ALM in NFC active mode; 2.2.2. "Contactless" normative constraints on NFC device antennae2.2.2.1. Uplink: initiator to target; 2.2.2.1.1. Bit encodings and the uplink; Modified-Miller (MM); No return to zero (NRZ); Manchester; Bit encoding-vicinity; Position encoding "1 of 256"; Position encoding "1 of 4"; 2.2.2.1.2. Bit rate; 2.2.2.1.3. Carrier modulation and uplink; Amplitude shift keying modulation; 100% ASK modulation; ASK modulation at 10%; ASK modulation at 10%-30%; 2.2.2.2. Downlink; 2.2.2.2.1. Bits encodings; Manchester coded sub-carrier (MSC); Binary phase shift keying (BPSK); Manchester; 2.2.2.3. Summary of the consequences for antennae design2.3. Conclusion; 3: Regulatory Constraints and Recommendations; 3.1. Regulatory constraints specific to NFC and NFC antennas; 3.1.1. State of RF regulations; 3.1.2. Constraints pertaining to radiation and pollution by NFC; 3.1.3. The ERC 70 03 recommendation and the ETSI 300 330 norm; 3.1.3.1. ERC 70 03; 3.1.3.2. ETSI 300 330; 3.1.3.2.1. The template/spectrum mask; 3.1.3.2.2. Values; 3.2. Constraints due to recommendations; 3.2.1. Exposure of the human body to EM fields; 3.2.1.1. Specific absorption rate (SAR); 3.2.2. Societal constraints due to individual freedoms (privacy)