Optimization of NFC compatible transponder with respect to the nonlinear IC impedance

authored by

W. Lin, B. Geck, H. Eul

Abstract

A very important quality factor of a transponder is its threshold field strength which is a result of the performance of the integrated circuit (IC) and the loop antenna. This is very important for near field communication (NFC) applications to ensure a fast and reliable communication between the active device and the transponder with a minimum of battery power. In this paper a new approach using a nonlinear model for the IC and an analytical description of the coil is presented to design a loop antenna with minimal threshold AeId strength. For comparison the IC is modeled with both a linear model and a nonlinear model. The optimization results for both cases show clearly the advantage of the procedure with a nonlinear IC model. Afterwards, the design constraints due to the input capacitance of the IC is analyzed.

Organisation(s)

Institute of Microwave and Wireless Systems

Type

Conference contribution

Publication date

2009

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Computer Networks and Communications, Hardware and Architecture, Electrical and Electronic Engineering

Electronic version(s)

https://doi.org/10.1109/IMWS2.2009.5307887 (Access: Closed)

 

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