Mobile radio frequency device, radio frequency IC (Integrated Circuit) card and radio frequency storage card

Abstract

A mobile radio frequency apparatus, a radio frequency integrated circuit card and a radio frequency memory card are provided. Wherein, the mobile radio frequency apparatus includes at least one low frequency magnetic induction circuit (1206), at least one low frequency amplify circuit (1215), at least one threshold judgment and demodulation circuit, at least one second main processor (1201), at least one radio frequency transceiver circuit (1203) and at least one radio frequency antenna (1204), the low frequency magnetic induction circuit (1206), the low frequency amplify circuit (1215), the threshold judgment and demodulation circuit, the second main processor (1201), the radio frequency transceiver circuit (1203), and the radio frequency antenna (1204) are in order connected in series; wherein, a low frequency receiving link composed of the low frequency magnetic induction circuit (1206), the low frequency amplify circuit (1215), and the threshold judgment and demodulation circuit works in the frequency below the preselected highest frequency f0 in which the system doesn't need calibration work. The mobile radio frequency apparatus enables the mobile terminal provided with the mobile radio frequency apparatus to realize the credit card transactions such as the electronic payment.

Description

technical field [0001] The invention relates to the communication field, in particular to a mobile radio frequency device, a radio frequency IC card and a radio frequency memory card. Background technique [0002] With the popularization of mobile terminals, there is an urgent application demand for mobile terminal payment by using mobile terminals. Currently, there are many implementation schemes, but each has its own disadvantages. At present, it has appeared that a radio frequency function (referred to as a radio frequency SIM card) is added to the SIM (Subscriber Identity Module) card in the mobile terminal or a short-distance communication module is added on the main board of the mobile terminal to realize short-distance communication of the mobile terminal. The latter is called NFC (Near Field Communication, near field communication). The emergence of these methods makes the mobile terminal a super intelligent terminal that can recharge, consume, trade and authenticate...

AI Technical Summary

Problems solved by technology

[0007] 2. The 13.56MHz frequency used by NFC needs to be calibrated to be used for distance control

It can be seen that the difference in field strength received by different terminals is >30dB, and the field strength change from 1cm to 10cm for the same terminal is about 25dB. The field strength change caused by the difference between mobile phones has exceeded the field strength of the terminal within the control range of 1cm to 10cm. Therefore, it is impossible to use the same threshold to control the distance of each terminal, that is, it is impossible to realize distance control without calibration

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