High dynamic range ASK demodulator for use in an RFID transponder
    1.
    发明授权
    High dynamic range ASK demodulator for use in an RFID transponder 有权
    用于RFID应答器的高动态范围ASK解调器

    公开(公告)号:US07855595B2

    公开(公告)日:2010-12-21

    申请号:US12182612

    申请日:2008-07-30

    IPC分类号: H03K9/02

    摘要: An ASK demodulator for use in an RFID transponder having a limiter circuit associated with the antenna circuit and converting the ASK antenna field strength modulation into an ASK limiter current modulation by limiting the antenna voltage to a fixed value and thereby causing the limiter current to be substantially proportional to the ASK antenna field strength, and a current discriminator circuit that discriminates the ASK limiter current modulation. By converting the field strength modulation into a proportional limiter current and discriminating that limiter current, a linear relationship and a stable demodulator sensitivity are achieved. The current discrimination can be made accurately under low-voltage conditions.

    摘要翻译: 一种用于RFID应答器的ASK解调器,其具有与天线电路相关联的限幅器电路,并将ASK天线场强调制转换为ASK限幅器电流调制,将天线电压限制为固定值,从而使限幅器电流基本上 与ASK天线场强成比例的电流鉴别器电路,以及鉴别ASK限制器电流调制的电流鉴别器电路。 通过将场强调制转换为比例限幅电流并鉴别限幅器电流,实现线性关系和稳定的解调器灵敏度。 在低电压条件下可以准确地进行电流鉴别。

    HIGH DYNAMIC RANGE ASK DEMODULATOR FOR USE IN AN RFID TRANSPONDER
    2.
    发明申请
    HIGH DYNAMIC RANGE ASK DEMODULATOR FOR USE IN AN RFID TRANSPONDER 有权
    高动态范围用于解码器的解调器

    公开(公告)号:US20090189688A1

    公开(公告)日:2009-07-30

    申请号:US12182612

    申请日:2008-07-30

    IPC分类号: H03K9/02

    摘要: An ASK demodulator for use in an RFID transponder having a limiter circuit associated with the antenna circuit and converting the ASK antenna fieldstrength modulation into an ASK limiter current modulation by limiting the antenna voltage to a fixed value and thereby causing the limiter current to be substantially proportional to the ASK antenna field strength, and a current discriminator circuit that discriminates the ASK limiter current modulation. By converting the fieldstrength modulation into a proportional limiter current and discriminating that limiter current, a linear relationship and a stable demodulator sensitivity are achieved. The current discrimination can be made accurately under low-voltage conditions.

    摘要翻译: 一种用于RFID应答器的ASK解调器,其具有与天线电路相关联的限幅器电路,并将ASK天线场强调制转换为ASK限幅器电流调制,将天线电压限制为固定值,从而使限幅器电流基本成比例 到ASK天线场强,以及电流鉴别器电路,其鉴别ASK限幅器电流调制。 通过将场强调制转换成比例限幅电流并识别限幅器电流,实现线性关系和稳定的解调器灵敏度。 在低电压条件下可以准确地进行电流鉴别。

    RFID transponder and method for operating the same
    3.
    发明授权
    RFID transponder and method for operating the same 有权
    RFID应答器及其操作方法

    公开(公告)号:US08923791B2

    公开(公告)日:2014-12-30

    申请号:US13314576

    申请日:2011-12-08

    摘要: An RFID transponder having an analog front end receiver having an attenuator coupled to receive an RF-signal from an antenna and to attenuate the RF-signal, an amplifier having a fixed amplifier gain and being coupled to receive and to amplify the attenuated RF-signal and a control unit coupled to control a gain of the attenuator, wherein the control unit is configured to control the attenuator gain in response to a level of the amplified RF-signal, the control unit is configured to have a plurality of predetermined states causing the attenuator to increase (step-up) or to decrease (step-down), its gain by a predefined step size.

    摘要翻译: 一种具有模拟前端接收器的RFID应答器,其具有被耦合以从天线接收RF信号并衰减RF信号的衰减器,放大器具有固定的放大器增益并被耦合以接收和放大衰减的RF信号 以及控制单元,其耦合以控制所述衰减器的增益,其中所述控制单元被配置为响应于所述放大的RF信号的电平来控制所述衰减器增益,所述控制单元被配置为具有多个预定状态, 衰减器增加(升压)或降低(降压),其增益由预定步长决定。

    Electronic device and method for kickback noise reduction of switched capacitive loads and method of operating the electronic device
    4.
    发明授权
    Electronic device and method for kickback noise reduction of switched capacitive loads and method of operating the electronic device 有权
    用于开关容性负载的反冲降噪声的电子装置和方法以及操作电子装置的方法

    公开(公告)号:US08922267B2

    公开(公告)日:2014-12-30

    申请号:US13267661

    申请日:2011-10-06

    IPC分类号: H03K17/687 H03F3/72

    摘要: An electronic device which includes a first stage having an input capacitance, a switch, a buffer and a second stage having an input sensitive to charge injection and/or voltage glitches. An input of the buffer and the input of the second stage are coupled together at a first node which is configured to be coupled to a voltage source for supplying a reference voltage to the input of the first stage having the input capacitance. In a first configuration of the switch, the switch is arranged to either connect the input of the first stage to the first node and to disconnect the input of the first stage from an output of the buffer. In a second configuration of the switch, to connect the input of the first stage to the output of the buffer and to disconnect the input of the first stage from the first node.

    摘要翻译: 一种电子设备,其包括具有输入电容的第一级,开关,缓冲器和具有对电荷注入和/或电压毛刺敏感的输入的第二级。 缓冲器的输入和第二级的输入在第一节点处耦合在一起,第一节点被配置为耦合到用于向具有输入电容的第一级的输入端提供参考电压的电压源。 在开关的第一配置中,开关被布置为将第一级的输入连接到第一节点,并且将第一级的输入与缓冲器的输出断开。 在交换机的第二配置中,将第一级的输入连接到缓冲器的输出并且将第一级的输入与第一个节点断开连接。

    Electronic device and method for an amplifier with resistive feedback
    5.
    发明授权
    Electronic device and method for an amplifier with resistive feedback 有权
    具有电阻反馈的放大器的电子装置和方法

    公开(公告)号:US08558612B2

    公开(公告)日:2013-10-15

    申请号:US13410087

    申请日:2012-03-01

    IPC分类号: H03F1/36

    摘要: An electronic device comprising an amplifier having at least a first input transistor of a first doping type. A first transistor is coupled with a channel as a feedback path between an output of the amplifier and a control gate of the first input transistor forming an input of the amplifier. A diode-coupled second transistor is coupled with a channel between a first current source and the output of the amplifier wherein a control gate of the first transistor is coupled between the first current source and the diode-coupled second transistor and the first transistor is of a second doping type which is opposite to the first doping type of the first input transistor of the amplifier.

    摘要翻译: 一种电子设备,包括具有至少第一掺杂类型的第一输入晶体管的放大器。 第一晶体管与通道耦合,作为放大器的输出与第一输入晶体管的控制栅极之间的反馈路径,其形成放大器的输入。 二极管耦合的第二晶体管与第一电流源和放大器的输出之间的通道耦合,其中第一晶体管的控制栅极耦合在第一电流源和二极管耦合的第二晶体管之间,第一晶体管为 与放大器的第一输入晶体管的第一掺杂类型相反的第二掺杂类型。

    ELECTRONIC DEVICE AND METHOD FOR KICKBACK NOISE REDUCTION OF SWITCHED CAPACITIVE LOADS AND METHOD OF OPERATING THE ELECTRONIC DEVICE
    6.
    发明申请
    ELECTRONIC DEVICE AND METHOD FOR KICKBACK NOISE REDUCTION OF SWITCHED CAPACITIVE LOADS AND METHOD OF OPERATING THE ELECTRONIC DEVICE 有权
    电子设备和用于开关电容负载的抑制噪声的方法和操作电子设备的方法

    公开(公告)号:US20120092055A1

    公开(公告)日:2012-04-19

    申请号:US13267661

    申请日:2011-10-06

    IPC分类号: H03L5/00

    摘要: An electronic device which includes a first stage having an input capacitance, a switch, a buffer and a second stage having an input sensitive to charge injection and/or voltage glitches. An input of the buffer and the input of the second stage are coupled together at a first node which is configured to be coupled to a voltage source for supplying a reference voltage to the input of the first stage having the input capacitance. In a first configuration of the switch, the switch is arranged to either connect the input of the first stage to the first node and to disconnect the input of the first stage from an output of the buffer. In a second configuration of the switch, to connect the input of the first stage to the output of the buffer and to disconnect the input of the first stage from the first node.

    摘要翻译: 一种电子设备,其包括具有输入电容的第一级,开关,缓冲器和具有对电荷注入和/或电压毛刺敏感的输入的第二级。 缓冲器的输入和第二级的输入在第一节点处耦合在一起,第一节点被配置为耦合到用于向具有输入电容的第一级的输入端提供参考电压的电压源。 在开关的第一配置中,开关被布置为将第一级的输入连接到第一节点,并且将第一级的输入与缓冲器的输出断开。 在交换机的第二配置中,将第一级的输入连接到缓冲器的输出并且将第一级的输入与第一个节点断开连接。

    Power level indicator
    7.
    发明授权
    Power level indicator 有权
    功率电平指示器

    公开(公告)号:US08886123B2

    公开(公告)日:2014-11-11

    申请号:US12722391

    申请日:2010-03-11

    IPC分类号: H04B7/00 H02J17/00

    CPC分类号: H02J50/12 H02J17/00 H02J50/80

    摘要: An electronic device is provided that is adapted to generate a supply voltage at an input node from a radio frequency (RF) signal. The electronic device includes a limiter coupled to the input node for limiting a supply voltage level at the input node that is generated by the received RF signal. The limiter is configured to draw a limiter current from the input node so as to limit the supply voltage level to a maximum and a magnitude of the limiter current is used for controlling a power consumption of the electronic device.

    摘要翻译: 提供了一种电子设备,其适于在射频(RF)信号的输入节点处产生电源电压。 电子设备包括耦合到输入节点的限幅器,用于限制由接收的RF信号产生的输入节点处的电源电压电平。 限制器被配置为从输入节点绘制限幅器电流,以便将电源电压电平限制到最大值,并且限制器电流的大小用于控制电子设备的功耗。

    POWER LEVEL INDICATOR
    8.
    发明申请
    POWER LEVEL INDICATOR 有权
    功率电平指示器

    公开(公告)号:US20100253315A1

    公开(公告)日:2010-10-07

    申请号:US12722391

    申请日:2010-03-11

    IPC分类号: G05F3/02

    CPC分类号: H02J50/12 H02J17/00 H02J50/80

    摘要: An electronic device is provided that is adapted to generate a supply voltage at an input node from a radio frequency (RF) signal. The electronic device includes a limiter coupled to the input node for limiting a supply voltage level at the input node that is generated by the received RF signal. The limiter is configured to draw a limiter current from the input node so as to limit the supply voltage level to a maximum and a magnitude of the limiter current is used for controlling a power consumption of the electronic device.

    摘要翻译: 提供了一种电子设备,其适于在射频(RF)信号的输入节点处产生电源电压。 电子设备包括耦合到输入节点的限幅器,用于限制由接收的RF信号产生的输入节点处的电源电压电平。 限制器被配置为从输入节点绘制限幅器电流,以便将电源电压电平限制到最大值,并且限制器电流的大小用于控制电子设备的功耗。

    ELECTRONIC DEVICE AND METHOD FOR AN AMPLIFIER WITH RESISTIVE FEEDBACK
    9.
    发明申请
    ELECTRONIC DEVICE AND METHOD FOR AN AMPLIFIER WITH RESISTIVE FEEDBACK 有权
    具有电阻反馈的放大器的电子装置和方法

    公开(公告)号:US20130009706A1

    公开(公告)日:2013-01-10

    申请号:US13410087

    申请日:2012-03-01

    IPC分类号: H03F1/38

    摘要: An electronic device comprising an amplifier having at least a first input transistor of a first doping type. A first transistor is coupled with a channel as a feedback path between an output of the amplifier and a control gate of the first input transistor forming an input of the amplifier. A diode-coupled second transistor is coupled with a channel between a first current source and the output of the amplifier wherein a control gate of the first transistor is coupled between the first current source and the diode-coupled second transistor and the first transistor is of a second doping type which is opposite to the first doping type of the first input transistor of the amplifier.

    摘要翻译: 一种电子设备,包括具有至少第一掺杂类型的第一输入晶体管的放大器。 第一晶体管与通道耦合,作为放大器的输出与第一输入晶体管的控制栅极之间的反馈路径,其形成放大器的输入。 二极管耦合的第二晶体管与第一电流源和放大器的输出之间的通道耦合,其中第一晶体管的控制栅极耦合在第一电流源和二极管耦合的第二晶体管之间,第一晶体管为 与放大器的第一输入晶体管的第一掺杂类型相反的第二掺杂类型。

    RFID TRANSPONDER AND METHOD FOR OPERATING THE SAME
    10.
    发明申请
    RFID TRANSPONDER AND METHOD FOR OPERATING THE SAME 有权
    RFID TRANSPONDER及其操作方法

    公开(公告)号:US20120161942A1

    公开(公告)日:2012-06-28

    申请号:US13314576

    申请日:2011-12-08

    IPC分类号: G06K7/01 G06K19/073

    摘要: An RFID transponder having an analog front end receiver having an attenuator coupled to receive an RF-signal from an antenna and to attenuate the RF-signal, an amplifier having a fixed amplifier gain and being coupled to receive and to amplify the attenuated RF-signal and a control unit coupled to control a gain of the attenuator, wherein the control unit is configured to control the attenuator gain in response to a level of the amplified RF-signal, the control unit is configured to have a plurality of predetermined states causing the attenuator to increase (step-up) or to decrease (step-down), its gain by a predefined step size.

    摘要翻译: 一种具有模拟前端接收器的RFID应答器,其具有被耦合以从天线接收RF信号并衰减RF信号的衰减器,放大器具有固定的放大器增益并被耦合以接收和放大衰减的RF信号 以及控制单元,其耦合以控制所述衰减器的增益,其中所述控制单元被配置为响应于所述放大的RF信号的电平来控制所述衰减器增益,所述控制单元被配置为具有多个预定状态, 衰减器增加(升压)或降低(降压),其增益由预定步长决定。