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41. 发明公开

EP0505867A2 Verfahren zur Nachbarkanalunterdrückung beim Empfang frequenzmodulierter Sender 失效
标题翻译： Verfahren zurNachbarkanalunterdrückungbeim Empfang Frequenzmodulierter发件人。
公开(公告)号：EP0505867A2
公开(公告)日：1992-09-30
申请号：EP92104469.9
申请日：1992-03-16
申请人： Blaupunkt-Werke GmbH
发明人： Rüngeler, Andreas, Dr. , Raichle, Franz
IPC分类号： H04B1/12
CPC分类号： H03D3/248 , H04B1/12
摘要： Es wird ein Verfahren zur Nachbarkanalunterdrückung beim Empfang frequenzmodulierter Signale beschrieben, bei dem ein Signalgemisch aus einem Nutzsignal und einem aus einem Nachbarkanal stammenden Störsignal nach analoger ZF-Filterung, Analog-Digital-Wandlung und Quadratursignalbildung in ein komplexes Basisbandsignal der Form a1 e iφ1 + a2 e iφ2 überführt wird. Dabei stellen a1 die Amplitude des Nutzsignals, a2 die Amplitude des Störsignals, φ1 die Phase des Nutzsignals und φ2 die Phase des Störsignals dar.
Durch Demodulation des Störsignals unter Berücksichtigung von auf dem Signalweg eintretenden Verzerrungen können Schätzwerte für die Momentanamplitude und Momentanphase des Störsignals ermittelt werden, die nach Remodulation vom komplexen Basisbandsignal abgezogen werden.
Das Störsignal und das Nutzsignal werden in getrennten, auf den jeweiligen Frequenzgang ihres Spektrums abgestimmten ZF-Filtern gefiltert und es werden anschließend Schätzwerte der Momentanamplitude des Störsignals im Nutzsignalweg mit Hilfe der ZF-Filtercharakteristik des Nutzsignalweges und der im Störsignalweg ermittelten Momentanfrequenz des Störsignals gewonnen.
摘要翻译：在这种方法中，来自相邻信道的有用信号和干扰信号的信号混合在模拟IF滤波之后，将模拟/数字转换和形成正交信号变换成形式为a1 e < 其中a1是有用信号的幅度，a2是干扰信号的幅度，phi 1是有用信号的相位，phi 2是干扰信号的相位。通过解调干扰信号，考虑到在信号路径上发生的失真，可以确定干扰信号的瞬时振幅和瞬时相位的估计值，其在再调制之后从复基带信号中减去。干扰信号和有用信号在调谐到其频谱的相应频率响应的单独的IF滤波器中被滤波，然后借助于IF滤波器特性获得有用信号路径上的干扰信号的瞬时幅度的估计值在干扰信号路径上确定的有用信号路径和干扰信号的瞬时频率。

42. 发明公开

EP0356096A3 Multiple reuse of an FM band 失效
标题翻译： FM带的多用途
公开(公告)号：EP0356096A3
公开(公告)日：1990-10-31
申请号：EP89308225.5
申请日：1989-08-14
申请人： Myers, Glen A.
发明人： Myers, Glen A.
IPC分类号： H03D3/24
CPC分类号： H03D3/248
摘要： A signal receiving system (10) for receiving messages from each of several unequal amplitude FM carriers (v i (t)) occupying the same portion of the frequency band. The capture effect associated with conventional frequency demodulators is utilized in a series of successively coupled phase lock loops (PLL 1 , PLL 2 , PLL 3 , ..., PLL N ) to provide demodulation of all of several FM carrier signals including weaker carrier signals in the presence of dominant carrier signals. A phase lock loop demodulator (PLL 1 ) provides a demodulated signal representing the information contained in the most dominant carrier signal input to the phase lock loop (PLL 1 ). The phase lock loop (PLL 1 also provides a replica signal (Y i (t)) which is identified to the most dominant carrier signal input. The input signal (V i (t)) is also delayed in a delay circuit (105) and input into an input port of an output circuit (106). The replica signal (Y i (t)) is also coupled to an input port of the output circuit (106). The output circuit (106) produces an output signal (Z i (t)) which is identical to the input signal (V i (t)) except that the most dominant carrier signal is suppressed. The output signal (Z i (t)) is then coupled to a successive phase lock loop (PLL 2 ) and delay circuit (115).

43. 发明公开

KR1020000013887A 무선통신 시스템에서 더블 위상동기루프에 의한 복조회로 失效
标题翻译：无线通信系统中双相锁相环的调制电路
公开(公告)号：KR1020000013887A
公开(公告)日：2000-03-06
申请号：KR1019980033009
申请日：1998-08-14
申请人： 삼성전자주식회사
发明人： 이형환
IPC分类号： H04B1/10 , H04L27/18
CPC分类号： H03D3/248 , H03D3/004 , H03L7/087 , H03L7/185
摘要： PURPOSE: A modulation circuit is provided to prevent lock in time from being delayed. CONSTITUTION: The modulation circuit by double phase-locked loop in radio communication system includes first and second voltage control oscillators(20, 28), first and second phase comparator(16), a divider(30), second and third low band pass filters(18, 24) and a mixer(10). The second voltage control oscillator is to generate a high frequency calling frequency which is needful to receive from a designated low frequency signal and to detect a base signal. The divider is to fixedly divide the high frequency calling signal generated from the second voltage control oscillator and output it. The first phase comparator is to compare the high frequency calling frequency to detect the received middle frequency signal and the base signal and detect the phase difference. The second low band pass filter is to convert the phase difference which is detected from the first phase comparator to a voltage. The first voltage control oscillator is to generate a low frequency signal corresponding to the voltage converted from the low band pass filter. The second phase comparator is to compare the low frequency signal which is generated from the first voltage control oscillator and a phase of the low frequency signal which is divided from the divider and output the difference value between both. The third low band pass filter is to convert the value of the phase difference which is detected from the second phase comparator to a voltage and apply to the second voltage control oscillator. The mixer is to mix the received middle frequency signal and the high frequency calling frequency which is output from the second voltage control oscillator, detect the base signal and output.
摘要翻译：目的：提供调制电路，防止时间锁定延迟。构成：无线电通信系统中双锁相环的调制电路包括第一和第二电压控制振荡器（20,28），第一和第二相位比较器（16），分频器（30），第二和第三低通带通滤波器（18,24）和混合器（10）。第二压控振荡器用于产生从指定的低频信号接收并检测基本信号的高频呼叫频率。分频器用于固定地分频由第二压控振荡器产生的高频呼叫信号并输出。第一相比较器是比较高频呼叫频率来检测接收到的中频信号和基频信号，并检测相位差。第二低通滤波器是将从第一相位比较器检测的相位差转换为电压。第一压控振荡器用于产生与从低通带滤波器转换的电压对应的低频信号。第二相比较器是比较从第一压控振荡器产生的低频信号和从分频器分频的低频信号的相位，并输出两者之间的差值。第三低通滤波器是将从第二相位比较器检测的相位差的值转换为电压并施加到第二压控振荡器。混频器用于混合接收的中频信号和从第二压控振荡器输出的高频呼叫频率，检测基本信号并输出。

44. 发明公开

KR1020010050306A 자체교정 복조장치 및 그 방법 有权
标题翻译：自校准解调器及其自动校准参考信号生成装置及方法
公开(公告)号：KR1020010050306A
公开(公告)日：2001-06-15
申请号：KR1020000051543
申请日：2000-09-01
申请人： 엘지전자 주식회사
发明人： 닐슨래리이. , 스그리그노리개리제이. , 존즈개리에이. , 장밍루
IPC分类号： H04B1/00
CPC分类号： H03D3/248 , H03D3/244 , H03D2200/0088
摘要： PURPOSE: A self-calibrating demodulator and an apparatus and method for generating a reference signal for self-calibration are provided to offer a self-calibrating demodulation apparatus and method in a demodulator used for digital broadcasting equipments and to generate a reference signal for the self-calibration of the demodulator. CONSTITUTION: A self-calibrating demodulation system(10) consists of a demodulator(12), a calibrating filter(14), and an equalizer(16). The demodulator(12) contains an analog IF(Intermediate Frequency) root raised cosine SAW(Surface Acoustic Wave) band pass filter which executes antialiasing filtering and band limiting and moderately removes adjacent channels. The calibrating filter(14) contains a 64-tap linear tapped delay line variable filter to correct demodulator caused distortions. The equalizer(16), comprised of a pre-calibration section, a post-calibration section and an adder, optimizes the data eyes of received distortion signals and is connected with a phase tracer removing phase noise.
摘要翻译：目的：提供一种自校准解调器以及用于产生用于自校准的参考信号的装置和方法，以提供用于数字广播设备的解调器中的自校准解调设备和方法，并为自身生成参考信号 - 解调器的校准。构成：自校准解调系统（10）由解调器（12），校准滤波器（14）和均衡器（16）组成。解调器（12）包含执行抗混叠滤波和频带限制并适度去除相邻信道的模拟IF（中频）根升余弦SAW（表面声波）带通滤波器。校准滤波器（14）包含64抽头线性抽头延迟线可变滤波器，以校正解调器引起的失真。由预校准部分，后校准部分和加法器组成的均衡器（16）优化接收到的失真信号的数据眼，并且与相位跟踪器相除以去除相位噪声。

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