An Improved Design and Implementation of a Range-Controlled Communication System for Mobile Phones

Gong, Mingyang ; Liu, Zhenglin ; et al.

In: Sensors (Basel, Switzerland), Jg. 20 (2020-09-01), Heft 17

Online unknown

Zugriff:

The Short-range-controlled communication system (RCC) based on a subscriber identity module (SIM) card is a replacement for the standard near-field communication (NFC) system to support near-field payment applications. The RCC uses both the low-frequency (LF) and high-frequency (HF) wireless communication system. The RCC communication distance is controlled under 10 cm. However, current RCCs suffer from compatibility issues, and the LF communication distance is lower than 0.5 cm in some phones with completely metallic shells. In this paper, we propose an improved LF communication system design, including an LF transmitter circuit, LF receiver chip, and LF-HF communication protocol. The LF receiver chip has a rail-to-rail amplifier and a self-correcting clock recovery differential Manchester decoder, which do not have the limitations of accurate gain and high system clock. The LF receiver chip is fabricated in a 0.18 &mu

m CMOS technology platform, with a die size of 1.05 mm ×

0.9 mm and current consumption of 41 &mu

A. The experiments show that the improved RCC has better compatibility, and the communication distance reaches to 4.2 cm in phones with completely metallic shells.

Titel:	An Improved Design and Implementation of a Range-Controlled Communication System for Mobile Phones
Autor/in / Beteiligte Person:	Gong, Mingyang ; Liu, Zhenglin ; Zhang, Haichun
Link:	View record in OpenAIRE (Volltext) http://europepmc.org/articles/PMC7506761
Zeitschrift:	Sensors (Basel, Switzerland), Jg. 20 (2020-09-01), Heft 17
Veröffentlichung:	MDPI, 2020
Medientyp:	unknown
ISSN:	1424-8220 (print)
Schlagwort:	rail-to-rail amplifier Computer science 02 engineering and technology Communications system lcsh:Chemical technology Biochemistry Article Analytical Chemistry law.invention law 0202 electrical engineering, electronic engineering, information engineering lcsh:TP1-1185 range-controlled communication Electrical and Electronic Engineering Instrumentation Clock recovery Subscriber identity module business.industry Amplifier 020208 electrical & electronic engineering Transmitter 020206 networking & telecommunications low-frequency circuits Chip Atomic and Molecular Physics, and Optics CMOS business Communications protocol Computer hardware
Sonstiges:	Nachgewiesen in: OpenAIRE Sprachen: English File Description: application/pdf Language: English Rights: OPEN

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