公开(公告)号：US09520902B2

公开(公告)日：2016-12-13

申请号：US14807179

申请日：2015-07-23

申请人： Wistron NeWeb Corp.

发明人： Chung-Ping Chang ,  Kun-Sung Liu ,  Chia-Chang Liu ,  Chun-Hsiung Chuang

IPC分类号： H04Q5/22 ,  H04B1/00 ,  G06K7/10 ,  H04B1/04 ,  H04B1/18

CPC分类号： H04B1/00 ,  G06K7/10009 ,  H04B1/0458 ,  H04B1/18

摘要： A reader is provided, including a power amplifier (PA), a low-noise amplifier (LNA), a circulator, an auto-tuning matching network, and a control circuit. The PA emits a first RF transmission signal. The LNA transmits a first RF induced signal corresponding to the first RF transmission signal. The circulator is coupled between the PA and LNA, transmits the first RF transmission signal to an RF connection terminal or receives the first RF induced signal from the RF connection terminal. The auto-tuning matching network is coupled to the circulator, matches impedances between the circulator and the RF connection terminal. The control circuit is coupled to the auto-tuning matching network, adjusts the auto-tuning matching network to match impedances between the circulator and the RF connection terminal.

摘要翻译： 提供了一种读取器，包括功率放大器（PA），低噪声放大器（LNA），循环器，自动调谐匹配网络和控制电路。 PA发射第一RF发射信号。 LNA发送对应于第一RF发送信号的第一RF感应信号。 环路器耦合在PA和LNA之间，将第一RF传输信号发射到RF连接终端，或从RF连接终端接收第一RF感应信号。 自适应匹配网络耦合到环行器，匹配循环器和RF连接端子之间的阻抗。 控制电路耦合到自适应匹配网络，调整自适应匹配网络以匹配循环器和RF连接端子之间的阻抗。

公开(公告)号：US09621210B1

公开(公告)日：2017-04-11

申请号：US15254567

申请日：2016-09-01

申请人： Wistron NeWeb Corp.

发明人： Chung-Ping Chang

IPC分类号： H04B1/3827 ,  H03F3/195 ,  H03F3/213

CPC分类号： H04B1/3833 ,  H03F3/195 ,  H03F3/245 ,  H03F3/45475 ,  H03F2200/294 ,  H03F2200/451 ,  H04B1/1607

摘要： A communication device includes a main circuit board, a cable, and an active antenna device. The cable is configured to deliver both a DC (Direct Current) control signal and an RF (Radio Frequency) signal. The active antenna device includes a comparator, a transmission path, a reception path, and an antenna element. The comparator recovers the DC control signal. The antenna element selects the transmission path or the reception path according to the recovered DC control signal, so as to transmit or receive the RF signal.

公开(公告)号：US09378400B2

公开(公告)日：2016-06-28

申请号：US14536688

申请日：2014-11-10

申请人： Wistron NeWeb Corp.

发明人： Chung-Ping Chang ,  Chia-Chang Liu

IPC分类号： G06K7/10

CPC分类号： G06K7/10009 ,  G06K7/10356 ,  H01Q1/2216 ,  H01Q3/24

摘要： 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.

摘要翻译： 提供了包括多个天线的射频识别读取器装置，开关模块，同轴电缆和读取器。 开关模块电连接到天线。 同轴电缆电连接到开关模块。 读取器通过同轴电缆将直流电压，控制信号和射频信号发送到开关模块。 开关模块通过直流电压和控制信号产生工作电压。 开关模块通过控制信号选择一个天线作为预设天线，并通过射频信号驱动预设天线。

公开(公告)号：US20150371065A1

公开(公告)日：2015-12-24

申请号：US14536688

申请日：2014-11-10

申请人： Wistron NeWeb Corp.

发明人： Chung-Ping Chang ,  Chia-Chang Liu

IPC分类号： G06K7/10

CPC分类号： G06K7/10009 ,  G06K7/10356 ,  H01Q1/2216 ,  H01Q3/24

摘要： 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.

摘要翻译： 提供了包括多个天线的射频识别读取器装置，开关模块，同轴电缆和读取器。 开关模块电连接到天线。 同轴电缆电连接到开关模块。 读取器通过同轴电缆将直流电压，控制信号和射频信号发送到开关模块。 开关模块通过直流电压和控制信号产生工作电压。 开关模块通过控制信号选择一个天线作为预设天线，并通过射频信号驱动预设天线。