Active coding and decoding mobile phone smart card with built-in sensing antenna

Abstract

The invention discloses an active coding and decoding mobile phone smart card with a built-in sensing antenna. The active coding and decoding mobile phone smart card with the built-in sensing antenna comprises a card body with a standard SIM (subscriber identity module) card, a sensing coil antenna, a resonant capacitor, an active loading coding and decoding IC (integrated circuit), an MCU (micro-programmed control unit) security chip and an SIM card standard copper-made connection contact, wherein the sensing coil antenna, the resonant capacitor, the active loading coding and decoding IC and the MCU security chip are integrated in the size space of the standard SIM card; the SIM card standard copper-made connection contact is arranged on the card body; the sensing coil antenna and the resonant capacitor are connected in parallel to form a resonant circuit of which the frequency is 13.56MHz; the resonant circuit is connected with the active loading coding and decoding IC; the active loading coding and decoding IC is connected with the MCU security chip; the MCU security chip is connected with the SIM card standard copper-made connection contact; the sensing coil antenna consists of a ferrite magnetic core and a winding coated outside the ferrite magnetic core; and the plane of the sensing coil antennal and the plane of the card body of the standard SIM card form a preset angle. After the structure is adopted, the mobile phone smart card can realize inductive coupling type wireless near field communication meeting the ISO (international standardization organization) 14443 system.

Description

technical field [0001] The invention relates to a smart card for a mobile phone, in particular to a smart card for a mobile phone with a built-in induction antenna and an active codec. Background technique [0002] NFC is the abbreviation of Near Field Communication, that is, short-range wireless communication technology. NFC, jointly developed by Philips and Sony, is a contactless identification and interconnection technology that enables short-range wireless communication between mobile devices, consumer electronics, PCs and smart control tools. [0003] Most foreign NFCs use the 13.56M frequency standard for the technical field of near-field communication. Under this standard system, the international standard ISO14443 has been formed. Most domestic payment platforms centered on the China UnionPay payment system have adopted the international standard ISO14443. And use the 13.56MHZ frequency standard for the technical standard of mobile payment. [0004] Under this syst...

AI Technical Summary

Problems solved by technology

[0009] At present, the existing so-called dual-interface mobile phone smart cards and NFC mobile phones are all designed and working based on such a reality. Their induction coil antennas must maintain sufficient size and area to absorb enough magnetic force lines to obtain induction energy, the induction coil antenna is also easily shielded by metal, which greatly reduces the ability to receive and transmit signals

Images