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    • 2. 发明授权
    • Receiver of NFC device and NFC device including the same
    • NFC设备和NFC设备的接收器包括相同的
    • US09419686B2
    • 2016-08-16
    • US14450408
    • 2014-08-04
    • Samsung Electronics Co., Ltd
    • Hang-Seok ChoiIl-Jong SongJun-Ho KimHyuk-Jun SungMin-Woo Lee
    • H04B5/00H04B17/21H03M1/46H03M1/12H03M1/10
    • H04B5/0056H03M1/1019H03M1/124H03M1/46H04B5/0025H04B17/21
    • A receiver of a near field communication device includes a local oscillator, a first channel, and a second channel. The local oscillator may be configured to generate a first local oscillating signal. The first channel may be configured to process an input signal by mixing the input signal with the first local oscillating signal. The second channel may be configured to process the input signal by mixing the input signal with a second local oscillating signal that has a phase difference of 90 degrees with respect to the first local oscillating signal. Each of the first and second channels may include a comparator unit that includes a comparator configured to compare, in a comparator mode, an amplifier output signal with a reference voltage whose level increases in a step-wise manner and the comparator unit may be configured to set a level of the reference voltage to be used in a normal mode based on an output signal of the comparator.
    • 近场通信设备的接收机包括本地振荡器,第一通道和第二通道。 本地振荡器可以被配置为产生第一本地振荡信号。 第一通道可以被配置为通过将输入信号与第一本地振荡信号混合来处理输入信号。 第二通道可以被配置为通过将输入信号与相对于第一本地振荡信号具有90度的相位差的第二本地振荡信号混合来处理输入信号。 第一和第二通道中的每一个可以包括比较器单元,其包括比较器,其被配置为在比较器模式下比较放大器输出信号与其电平以逐步方式增加的参考电压,并且比较器单元可以被配置为 基于比较器的输出信号设定要在正常模式下使用的参考电压的电平。