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參數(shù)資料
| 型號(hào)： | EM4223V7WW11E |
| 廠商： | EM Microelectronic |
| 英文描述： | Read-only UHF Radio Frequency Identification Device |
| 中文描述： | 只讀超高頻射頻識(shí)別設(shè)備 |
| 文件頁(yè)數(shù)： | 18/29頁(yè) |
| 文件大小： | 437K |
| 代理商： | EM4223V7WW11E |
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R
EM4223
Copyright
2005, EM Microelectronic-Marin SA
18
www.emmicroelectronic.com
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End of last
tag bit
Tag Command Window
Tag
transmission
Interrogator
RF field
1st high to low transition of the
command shall occur in this time.
Tag bits after last transmitted bit
the last tag data transition occurs
at either the centre or end of the
last bit period depending on FM0
state.
Tag not
reflecting
carrier steady
state level
Tag listens
carrier
modulated
state level
Fig. 13 - Command Window Timing
6. RETURN LINK DATA ENCODING - TRANSPORTER TO READER
The return link data is modulated onto the impinging illuminating RF carrier using varying impedance modulation.
Return link data encoding
Data is encoded using Bi-phase space (FM0).
FM0 Data Coding
1
1
0
0
t
Trlb
MSB first encoding of Byte 10110001 = 'B1'
1
1
0
0
Alternative
depending on
prior conditions
Fig. 14 - Return link – data encoding
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| EM4223V7WW7 | Read-only UHF Radio Frequency Identification Device |
| EM4223V7WW7E | Read-only UHF Radio Frequency Identification Device |
| EM4223V8SP3B | Read-only UHF Radio Frequency Identification Device |
| EM4223V8WS11 | Read-only UHF Radio Frequency Identification Device |
| EM4223V8WS11E | Read-only UHF Radio Frequency Identification Device |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EM4223V7WW7 | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:Read-only UHF Radio Frequency Identification Device |
| EM4223V7WW7E | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:Read-only UHF Radio Frequency Identification Device |
| EM4223V8SP3B | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:Read-only UHF Radio Frequency Identification Device |
| EM4223V8WS11 | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:Read-only UHF Radio Frequency Identification Device |
| EM4223V8WS11E | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:Read-only UHF Radio Frequency Identification Device |
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