ANTENNA SWITCH AND ANTENNA SWITCHING METHOD THEREOF

PURPOSE: An antenna switch and an antenna switching method thereof are provided to attenuate the electric wave of an RFID(Radio Frequency IDentification) readers by providing impedance matching through first and second impedance matching circuits. CONSTITUTION: An RFID system(2) includes an RFID rea...

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Bibliographische Detailangaben
Hauptverfasser:	WANG I FON, HUNG PI CHUAN, PENG JIA MEI, CHENG I FON, TIEN YUNG PING, TU JAW HUI
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	BASIC ELECTRIC ELEMENTS CALCULATING COMPUTING COUNTING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY HANDLING RECORD CARRIERS PHYSICS PRESENTATION OF DATA RECOGNITION OF DATA RECORD CARRIERS RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE TRANSMISSION WAVEGUIDES
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Beschreibung
Zusammenfassung:	PURPOSE: An antenna switch and an antenna switching method thereof are provided to attenuate the electric wave of an RFID(Radio Frequency IDentification) readers by providing impedance matching through first and second impedance matching circuits. CONSTITUTION: An RFID system(2) includes an RFID reader(12), an RFID tag, an antenna switch(20) and antennas(14a-14p). The antenna switch electrically connects the RFID reader to one of the antennas. The antennas are arranged on a shelf(16), and the RFID reader reads out the data of the RFID tag through the antennas. The RFID readers immediately obtains the state change of the articles on the shelf, and the RFID system is electrically connected to at least 4 sets among the antennas through the antenna switch.