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參數(shù)資料
| 型號： | HTCM400 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | HITAG core module hardware |
| 中文描述： | 此外，HITAG核心模塊的硬件 |
| 文件頁數(shù)： | 19/24頁 |
| 文件大?。?/td> | 112K |
| 代理商： | HTCM400 |
2001 Oct 04
19
Philips Semiconductors
Product specification
HITAG core module hardware
HTCM400
– All conducting material has to be removed from the
antenna environment
– A thicker wire can be used for the coil
– Ferrite can be placed behind the antenna coil to
concentrate the field
– Extension of the antenna area
– There can be better results by trying another number
of turns.
Attention: all these measures must not differ from the
antenna design instructions of Section 11.
Remark: with additional dropping resistors R1 and R
e
the
quality factor of the whole antenna system is
approximately 15.
11.9
Reference antennas
Designing an antenna in the way described in Chapter 11
you could use the following values:
0.4 mm Cu; lacquer wire; 35 turns
Diameter of the turns (internal) is 145 mm
Tuning frequency is 125 kHz
Tuning capacity depending on the length of the antenna
cable and the exact way of winding.
This antenna is best suitable for HITAG 1 and 2 cards. In
this performance reading distances of approximately
150 mm should be achieved.
A further antenna configuration:
0.224 mm Cu; lacquer wire; 52 turns
Diameter of the turns (internal) is 65 mm
Tuning frequency is 125 kHz
Tuning capacity depending on the length of the antenna
cable and the exact way of winding.
In this case cards and coins can be used and the following
approximate communication distances should be
achieved:
Read distances with HITAG 1 and 2 card: 120 mm
Read distances with HITAG 1 and 2 coin: 65 mm.
The third antenna configuration is the smallest one:
0.224 mm Cu; lacquer wire; 85 turns
Diameter of the turns (internal) is 35 mm
Tuning frequency is 125 kHz
Tuning capacity depending on the length of the antenna
cable and the exact way of winding.
Using this antenna coins and pills can be operated up to
the following approximate distances:
Read distance with HITAG 1 coin: 58 mm
Read distance with HITAG 1 pill: 28 mm.
All distances are given in free air at room temperature.
12 SURVEY OF REFERENCED DOCUMENTS
CATEGORY
TITLE
Data sheet
“HTCM400, HTRM440 Family,
HTRM800 Family HITAG Interface
Protocol Reader - Host”
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