Radio-frequency identification reader device
First Claim
Patent Images
1. A radio-frequency identification reader device, comprising:
- a plurality of antennas;
a switch module electrically connected to the antennas;
a coaxial cable electrically connected to the switch module, wherein the coaxial cable comprises an inner conductor and an outer conductor, and the outer conductor is electrically connected to a ground terminal; and
a reader transmitting a direct current voltage, a control signal, and a radio-frequency signal to the switch module through the coaxial cable, wherein the switch module generates an operation voltage by the direct current voltage and the control signal, the switch module selects one of the antennas as a preset antenna by the control signal and drives the preset antenna by the radio-frequency signal, and the reader comprises;
a signal generating circuit generating the direct current voltage and the control signal;
a first high-frequency blocking element electrically connected to the signal generating circuit and the inner conductor, wherein the first high-frequency blocking element transmits the direct current voltage and the control signal and blocks the radio-frequency signal; and
a first low-frequency blocking element electrically connected to the inner conductor, wherein the first low-frequency blocking element transmits the radio-frequency signal and blocks the direct current voltage and the control signal.
1 Assignment
0 Petitions
Accused Products
Abstract
A radio-frequency identification reader device including a plurality of antennas, a switch module, a coaxial cable, and a reader is provided. The switch module is electrically connected to the antennas. The coaxial cable is electrically connected to the switch module. The reader transmits a DC voltage, a control signal, and a radio-frequency signal to the switch module through the coaxial cable. The switch module generates an operation voltage by the DC voltage and the control signal. The switch module selects one of the antennas as a preset antenna by the control signal and drives the preset antenna by the radio-frequency signal.
11 Citations
9 Claims
-
1. A radio-frequency identification reader device, comprising:
-
a plurality of antennas; a switch module electrically connected to the antennas; a coaxial cable electrically connected to the switch module, wherein the coaxial cable comprises an inner conductor and an outer conductor, and the outer conductor is electrically connected to a ground terminal; and a reader transmitting a direct current voltage, a control signal, and a radio-frequency signal to the switch module through the coaxial cable, wherein the switch module generates an operation voltage by the direct current voltage and the control signal, the switch module selects one of the antennas as a preset antenna by the control signal and drives the preset antenna by the radio-frequency signal, and the reader comprises; a signal generating circuit generating the direct current voltage and the control signal; a first high-frequency blocking element electrically connected to the signal generating circuit and the inner conductor, wherein the first high-frequency blocking element transmits the direct current voltage and the control signal and blocks the radio-frequency signal; and a first low-frequency blocking element electrically connected to the inner conductor, wherein the first low-frequency blocking element transmits the radio-frequency signal and blocks the direct current voltage and the control signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
Specification