Справочник Пользователя для Industrial Technology Research Institute 00000UHFISTC01
User Manual Document
Document Title
Doc. No.
Model Ver. Doc. Ver. Issue Date
Page
Handfree Mini Reader
Module
1.0
ISTC01
1.0
09/14/2009
7 of 10
4.1
System Structure
There are five parts of PDA or the cell-phone for system structures that are
including the power, digit, radio frequency, base and FW respectively.
4.1.1 Radio Frequency Circuit
This is a transceiver module with ISM of the electromagnetic wave for a
transmission and receiving. It is among them transceiver inside that is in transmitter
and the receiver function as follows:
and the receiver function as follows:
The function of the Transmitter:
The function of the transmitter is controlled and produced the signal
carrier by the synthesizer of the microprocessor. The signal that will be
modulated in amplitude to be an ASK signal used to offer the power that
the tag is used to read data from its memory as well as using the pulse to
adjust the way of changing to write the data into the tag。
carrier by the synthesizer of the microprocessor. The signal that will be
modulated in amplitude to be an ASK signal used to offer the power that
the tag is used to read data from its memory as well as using the pulse to
adjust the way of changing to write the data into the tag。
The function of the Receiver:
The function in receiving information from tags has been demodulated to
several digital signals. The signals are also amplified and straining waves
to deal with microprocessor.
several digital signals. The signals are also amplified and straining waves
to deal with microprocessor.
4.1.2
The Interface of Power Supplies
The power system is offered 3.3V by HANDFREE MINI READER
MODULE interface of PDA or the cell-phone with Max. 2A.
3.3V-5.2.5 (1) ：The microprocessor and UART using.
3.3V-5.2.5 (2) ：ISM RF transceiver using.
3.3V-5.2.5 (3) ：Power Amplify using