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    • 1. 发明公开
    • Q-퀀칭 슈퍼-리제너러티브 리시버
    • Q-QUENCHING超再生接收器
    • KR1020060097118A
    • 2006-09-13
    • KR1020067007642
    • 2004-09-20
    • 마이크로칩 테크놀로지 인코포레이티드
    • 로렌스,루안
    • H04B1/16
    • H03D11/06H03D11/02H04B1/30
    • A super-regenerative receiver uses controlled Q-quenching and may limit the resonant tank circuit amplitude by loading the tank circuit as soon as regenerative oscillation is detected. An amplitude detector is coupled to the regenerative amplifier and controls a Q loading circuit coupled to the tank circuit of the regenerative amplifier. The amplitude detector turns on the Q loading circuit which then stops the regenerative amplifier from oscillating, and the Q-loading remains on for a brief time to insure that the regenerative amplifier has stopped oscillating. After the brief time, the Q loading circuit is turned off and the regenerative amplifier goes into oscillation again. This cycle repeats controllably over and over, resulting in a lower self-induced noise floor and improved received signal sensitivity. The super-regenerative receiver may be used in the very low frequency (VLF), low frequency (LF), medium frequency (MF), high frequency (HF), very high frequency (VHF) and super high frequency (SHF) ranges to receive continuous wave (CW), amplitude modulated (AM) and frequency modulated (FM) radio signals.
    • 超再生接收机采用受控制的Q-淬火,并且一旦检测到再生振荡,就通过加载油箱回路来限制谐振回路振幅。 振幅检测器耦合到再生放大器并且控制耦合到再生放大器的电路的Q加载电路。 振幅检测器打开Q加载电路,然后停止再生放大器的振荡,并且Q加载保持打开一段短暂的时间,以确保再生放大器已停止振荡。 短暂时间后,Q加载电路关闭,再生放大器再次进入振荡状态。 该循环可重复地反复重复,导致较低的自感噪声基底和改善的接收信号灵敏度。 超再生接收机可以用于极低频(VLF),低频(LF),中频(MF),高频(HF),超高频(VHF)和超高频(SHF) 接收连续波(CW),幅度调制(AM)和调频(FM)无线电信号。
    • 2. 发明公开
    • 저주파 트랜스폰더에서 부정확한 웨이크-업을 저감시키는장치 및 방법
    • 减少在低频传输器中的假冒唤醒
    • KR1020070005728A
    • 2007-01-10
    • KR1020067024522
    • 2005-04-14
    • 마이크로칩 테크놀로지 인코포레이티드
    • 놀란,제임스,비.리,토마스,유보크람피에르,알란로렌스,루안베르니어,스티브
    • H04Q5/22G06K7/00H04Q5/00
    • G06K19/0705G06K19/0723G07C9/00309G07C2009/0038
    • A bidirectional remote keyless entry (RKE) transponder comprises an analog front-end (AFE) having a programmable wake-up filter that predefines the waveform timing of the desired input signal, minimum modulation depth requirement of input signal, and independently controllable channel gain reduction of each of its three channels, X, Y, and Z. The wake-up filter parameters are the length of high and low durations of wake-up pulses that may be programmed in a configuration register. The wake-up filter allows the AFE to output demodulated data if the input signal meets its wake-up filter requirement, but does not output the demodulated data otherwise. The AFE output pin is typically connected to an eternal device for control, such as a microcontroller (MCU). The external device typically stays in low current sleep (or standby) mode when the AFE has no output and switches to high current wake-up (or active) mode when the AFE has output. Therefore, in order to keep the eternal control device in the low current sleep mode when there is no desired input signal, it is necessary to keep no output at the AFE output pin. This can be achieved by controlling the wake-up filter parameters, minimum modulation depth requirement of input signal, and. channel gains of the AFE device. These features can reduce false-wake up of the bidirectional RKE transponder due to undesired input signals such as noise signals. ® KIPO & WIPO 2007
    • 双向远程无钥匙进入(RKE)转发器包括具有可编程唤醒滤波器的模拟前端(AFE),其预定义所需输入信号的波形定时,输入信号的最小调制深度要求以及独立可控的信道增益减小 的三个通道中的每一个,X,Y和Z.唤醒滤波器参数是可以在配置寄存器中编程的唤醒脉冲的高和低持续时间的长度。 唤醒滤波器允许AFE在输入信号满足唤醒滤波器要求时输出解调数据,否则不输出解调数据。 AFE输出引脚通常连接到用于控制的永久性设备,例如微控制器(MCU)。 当AFE没有输出时,外部设备通常保持在低电流休眠(或待机)模式,并且当AFE输出时,外部设备切换到高电流唤醒(或有效)模式。 因此,为了在不需要输入信号的情况下将永久控制装置保持在低电流睡眠模式,需要在AFE输出引脚处不输出。 这可以通过控制唤醒滤波器参数,输入信号的最小调制深度要求来实现。 AFE设备的通道增益。 这些功能可以减少由于不期望的输入信号(如噪声信号)引起的双向RKE转发器的假唤醒。 ®KIPO&WIPO 2007