參數(shù)資料
型號(hào): 935272977118
廠商: NXP SEMICONDUCTORS
元件分類: 通信及網(wǎng)絡(luò)
英文描述: SPECIALTY TELECOM CIRCUIT, UUC
封裝: FLIP CHIP PACKAGE
文件頁(yè)數(shù): 3/11頁(yè)
文件大小: 1386K
代理商: 935272977118
11
PUBLIC INFORMATION
Philips Semiconductors
Product Specification Revision 3.1 2006 July 18
HITAG S
HTS IC H32/HTS IC H56/HTS IC H48
7.2
Energy Transmission
Passive transponders must somehow be supplied with energy to be able to operate. In the HITAG System, this is
achieved by using the principle of a loose coupled transformer:
The RWD antenna generates a magnetic field. Some of the generated magnetic flux flows through the transponder
antenna and induces a voltage there. The voltage drives a current and the transponder will start operating. As this current
will be very small when the transponder is far away from the antenna, the HITAG S Transponder IC is designed for low
power consumption.
The principle of a loose coupled transformer enables also a bi-directional data transmission.
Fig.4 Loose coupled transformer.
M
RWD
Antenna
Transponder
Antenna
Energy
Data
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