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公开(公告)号：EP1271788B1
公开(公告)日：2008-05-21
申请号：EP02008490.1
申请日：2002-04-15
申请人： MOTOROLA, INC.
发明人： Ben-Ayun, Mosche , Rozental, Mark , Nocham, Gabi
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2.发明公开TV tuner capable of outputting signals within a wide frequency band by means of a single local oscillator 审中-公开一种电视调谐器适合于通过单个振荡器在较宽的频带信号提供
公开(公告)号：EP1603235A1
公开(公告)日：2005-12-07
申请号：EP05017194.1
申请日：2001-09-26
发明人： Suzuki, Takeo , Osada, Shigeru
CPC分类号： H03J5/244 , H03J1/0041 , H03J3/32 , H03J5/24 , H03L7/0805 , H03L7/099
摘要： A TV signal receiving tuner which is small in size and inexpensive due to a reduced number of local oscillators. In the TV signal receiving tuner, a local oscillation signal output from a local oscillator is directly applied to a first mixer to receive a UHF TV signal, the local oscillation signal output from the local oscillator is applied to a second mixer after its frequency is divided by a first programmable divider to receive a VHF high-band TV signal, and the local oscillation signal output from the local oscillator is applied to a third mixer after its frequency is divided by a second programmable divider to receive a VHF low-band TV signal.
摘要翻译： 的TV信号接收调谐器的所有其在小型且便宜，由于本地振荡器的数量减少。 在电视信号接收调谐器，从本地振荡器输出的本振信号被直接施加到第一混频器接收UHF电视信号，来自本机振荡器输出的本机振荡信号被施加到第二混频器的频率被分频后 由第一可编程分频器接收VHF高频带电视信号，并从本地振荡器输出的本机振荡信号被施加到第三混频器的频率由第二可编程分频器分频后以接收VHF低频带电视信号 ，
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3.发明公开Synthétiseur de fréquences à diviseur fractionnaire et à réponse rapide, et procédé de synthèse de fréquences correspondant 审中-公开频率合成器具有用于频率合成分数分频比和更快的调谐和相应的方法
公开(公告)号：EP1193877A1
公开(公告)日：2002-04-03
申请号：EP01203619.0
申请日：2001-09-25
发明人： Jovenin, Fabrice
CPC分类号： H03L7/1974 , H03J5/00 , H03J5/0245 , H03J5/24 , H03J7/065 , H03J2200/10 , H03J2200/29 , H03L7/099 , H03L2207/06
摘要： La présente invention concerne un synthétiseur de fréquences, comportant, dans une boucle à verrouillage de phase :
un comparateur phase-fréquence (16), connecté à une source de fréquences de référence (20),
au moins un oscillateur commandé en tension (12), et
un diviseur de fréquences fractionnaire (14) apte à fournir un rapport de division moyen avec une composante entière et une composante fractionnaire.
Conformément à l'invention, l'oscillateur comporte une pluralité d'étages d'oscillateur avec des fréquences centrales différentes, et le synthétiseur comporte en outre des moyens de sélection d'un étage d'oscillateur en fonction de la composante entière du rapport moyen de division.
Application aux téléphones portables.摘要翻译： 频率合成器basesd上的锁相环（PLL），其包括连接到晶体振子（20）作为参考频率源的相位 - 频率比较器（16），电压控制振荡器（12）包括一个 集阶段振荡器具有不同中心频率的，每个级包括通过受控断续器（13）连接在电路中自主VCO（12a）的，和小数分频器（14）传送与整数和小数成分的平均分频比。 甲阶段振荡器（13A）被选择作为由断续器（13）通过使用对应的逻辑表（50）的控制的平均分频比的整数成分功能有关的分频比的整数部分的选择 振荡阶段。 参考信号的频率是由分频器的调谐步骤更高。 一个级振荡器的选择是通过用逻辑表（50）相关联的逻辑指针（51）的装置。 每个阶段振荡器包括自主电压控制振荡器（VCO）（12A）具有适当中心频率的。 在该装置的一个变型中，电压控制振荡器块包括与电容器的电池为中心频率的选择相关联，或与变容二极管相关联的一个VCO。 所以，该装置包括，用于校准的目的，两个计数器（64A，64B），用于查找对加法器（70），用于校正所述差值计数的减法器（68），以及一个移位寄存器（72）。 用于频率合成的方法，是由频率合成器实现。 该方法包括校准步骤，当PLL是开放的，并且一个频率合成步骤当PLL被关闭。 该方法包括校准步骤，当频率合成器是欠电压，和用于分频比的每个新选择的至少一个校准步骤。 频率转换器包括具有连接到信号转换源的第一输入，和连接到参考信号，其中包含了频率合成器的源的第二输入端的混频器。
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4.发明公开TV tuner capable of outputting a wide band signal by means of a single local oscillator 审中-公开一种电视调谐器能够通过单个本地振荡器的手段提供宽带信号的
公开(公告)号：EP1195899A2
公开(公告)日：2002-04-10
申请号：EP01308202.9
申请日：2001-09-26
CPC分类号： H03J5/244 , H03J1/0041 , H03J3/32 , H03J5/24 , H03L7/0805 , H03L7/099
摘要： A TV signal receiving tuner which is small in size and inexpensive due to a reduced number of local oscillators. In the TV signal receiving tuner, a local oscillation signal output from a local oscillator is directly applied to a first mixer (9) through a first programmable divider (16) to receive a UHF TV signal, the local oscillation signal output from the local oscillator is applied to the first mixer after its frequency is divided to 1/3 by the first programmable divider to receive a VHF high-band TV signal, and the local oscillation signal output from the local oscillator is applied to the first mixer after its frequency is divided to 1/5 by the first programmable divider to receive a VHF low-band TV signal.
摘要翻译： 的TV信号接收调谐器的所有其在小型且便宜，由于本地振荡器的数量减少。 在电视信号接收调谐器，从本地振荡器输出的本地振荡信号通过一第一可编程分频器（16）被直接施加到第一混频器（9）以接收UHF电视信号，来自本机振荡器输出的本机振荡信号 被施加到所述第一混频器的频率被分频到1/3之后，由第一可编程分频器接收VHF高频带电视信号，并从本地振荡器输出的本机振荡信号被施加到所述第一混频器后其频率为 分为1/5由第一可编程分频器接收VHF低频带电视信号。
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公开(公告)号：EP1069681A2
公开(公告)日：2001-01-17
申请号：EP00305019.2
申请日：2000-06-14
IPC分类号： H03J5/24
CPC分类号： H03J5/24
摘要： Disclosed herein is a frequency-characteristic switchable buffer circuit (1) capable of increasing attenuation of a spurious frequency signal upon selection of a second frequency signal. The frequency-characteristic switchable buffer circuit includes an amplifying stage (2), a parallel resonance circuit (3) which serves as an output load of the amplifying stage, a frequency trap circuit (6) electrically connected between the input of the amplifying stage and a reference potential point, and a frequency switching voltage generator (20,21) for selectively generating a first switching voltage or a second switching voltage. The parallel resonance circuit parallel-resonates at a first frequency when the first switching voltage is supplied thereto. When the second switching voltage is supplied thereto, the parallel resonance circuit parallel-resonates at a second frequency. The frequency trap circuit comprises a series circuit made up of a diode (6 2 ) and a capacitor (6 1 ). When the first switching voltage is supplied to the frequency trap circuit, the frequency trap circuit series-resonates at a frequency lower than the first frequency. When the second switching voltage is supplied thereto, it series-resonates at any of frequencies lying within at 1700MHz band, which is higher than the second frequency.
摘要翻译： 本文公开了一种频率特性可切换缓冲器电路（1），其能够在选择第二频率信号时增加寄生频率信号的衰减。 频率特性可切换缓冲电路包括放大级（2），作为放大级的输出负载的并联谐振电路（3），电连接在放大级的输入与放大级之间的频率陷波电路（6） 参考电位点和频率切换电压发生器（20,21），用于选择性地产生第一切换电压或第二切换电压。 并联谐振电路在提供第一开关电压时以第一频率并联谐振。 当提供第二开关电压时，并联谐振电路以第二频率并联谐振。 频率陷波电路包括由二极管（62）和电容器（61）组成的串联电路。 当第一开关电压被提供给频率陷波电路时，频率陷波电路以低于第一频率的频率串联谐振。 当提供第二开关电压时，它在位于比第二频率高的1700MHz频带内的任何频率处串联谐振。
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公开(公告)号：EP0299578A1
公开(公告)日：1989-01-18
申请号：EP88201464.0
申请日：1988-07-11
IPC分类号： H03J5/24
CPC分类号： H03J5/24
摘要： TV-RF input circuit provided with an RF coupling device via which an aerial input is coupled to first, second and third parallel tunable RF resonant circuits (11, 21, 31) for a parallel selection of a desired frequency in first, second and third TV frequency bands (50 - 160 MHz; 160 - 470 MHz; 470 - 860 MHz) substantially succeeding one another in frequency, said RF coupling device having a high-pass η-section (C, L2, L3) for suppressing frequencies below the first TV frequency band and being provided with a capacitive series branch and first and second inductive shunt branches, said η-section (C, L2, L3) being coupled via a first series inductance (L1) to the first RF resonant circuit (11). In order to ensure, without extra elements, a substantially reflection-free supply of TV-RF reception signals to each of the said RF resonant circuits, second and third series inductances (L2, L3) of mutually equal order are arranged in the first and second inductive shunt branches, respectively, which inductances are coupled at one end to either side of a capacitor (C) arranged in the capacitive series branch and at the other end to the second and third RF resonant circuits (21, 31), respectively, said first series inductance (L1) being at least several times larger than each of the two other series (L2, L3) inductances.
摘要翻译： 具有RF耦合装置的TV-RF输入电路，通过该RF耦合装置，天线输入耦合到第一，第二和第三并行可调谐RF谐振电路（11,21,31），用于在第一，第二和第三中并联选择期望的频率 所述RF耦合器件具有高通等级（C，L2，L3），用于抑制频率以下的频率（C，L2，L3），所述频率范围（50-160MHz; 160- 470MHz; 470-860MHz） 第一电视频带，并且设置有电容串联分支和第一和第二感应分流分支，所述等级（C，L2，L3）经由第一串联电感（L1）耦合到第一RF谐振电路（11） 。 为了确保在没有额外的元件的情况下，向每个所述RF谐振电路提供基本无反射的TV-RF接收信号，第一和第二串联电感（L2，L3）彼此相等， 第二感应分路分支，其电感一端分别耦合到布置在电容串联支路中的电容器（C）的另一端，另一端耦合到第二和第三RF谐振电路（21,31） 所述第一串联电感（L1）比其他两个串联（L2，L3）电感中的每一个大至少几倍。
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公开(公告)号：EP2991223A1
公开(公告)日：2016-03-02
申请号：EP14818794.1
申请日：2014-06-24
发明人： WANG, Yongchao , ZHANG, Hui , DONG, Feng , WANG, Yajun , CHENG, Yueyun
IPC分类号： H03J5/24
摘要： The present invention provides a harmonic suppression system, including: an interface connector, a baseband chip, an antenna, an antenna switch, at least two LC trap networks, a first differential SPMT switch, and a second differential SPMT switch, where the interface connector is connected to a common end of the first differential SPMT switch; a control port of the first differential SPMT switch is connected to a control port of the second differential SPMT switch, and a gating throw end of the first differential SPMT switch is separately connected to one end of each LC trap network in a one-to-one correspondence; the control port of the second differential SPMT switch is connected to the baseband chip, each gating throw end of the second differential SPMT switch is separately connected to the other end of each LC trap network in a one-to-one correspondence, and a common end of the second differential SPMT switch is connected to the baseband chip; the baseband chip is connected to the antenna switch; and the antenna switch is connected to the antenna.
摘要翻译： 本发明提供了一种谐波抑制系统，包括：接口连接器，基带芯片，天线，天线开关，至少两个LC陷波网络，第一差分SPMT开关和第二差分SPMT开关，其中接口连接器 连接到第一差分SPMT开关的公共端; 所述第一差分SPMT开关的控制端口与所述第二差分SPMT开关的控制端口连接，所述第一差分SPMT开关的选通掷端分别与每个LC陷波网络的一端一对一连接， 一个信件; 第二差分SPMT开关的控制端口连接到基带芯片，第二差分SPMT开关的每个选通掷端分别与每个LC陷波网络的另一端以一一对应的方式单独连接， 第二差分SPMT开关的一端连接到基带芯片; 基带芯片连接到天线开关; 并且天线开关连接到天线。
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公开(公告)号：EP1069681A3
公开(公告)日：2003-08-13
申请号：EP00305019.2
申请日：2000-06-14
CPC分类号： H03J5/24
摘要： Disclosed herein is a frequency-characteristic switchable buffer circuit (1) capable of increasing attenuation of a spurious frequency signal upon selection of a second frequency signal. The frequency-characteristic switchable buffer circuit includes an amplifying stage (2), a parallel resonance circuit (3) which serves as an output load of the amplifying stage, a frequency trap circuit (6) electrically connected between the input of the amplifying stage and a reference potential point, and a frequency switching voltage generator (20,21) for selectively generating a first switching voltage or a second switching voltage. The parallel resonance circuit parallel-resonates at a first frequency when the first switching voltage is supplied thereto. When the second switching voltage is supplied thereto, the parallel resonance circuit parallel-resonates at a second frequency. The frequency trap circuit comprises a series circuit made up of a diode (6 2 ) and a capacitor (6 1 ). When the first switching voltage is supplied to the frequency trap circuit, the frequency trap circuit series-resonates at a frequency lower than the first frequency. When the second switching voltage is supplied thereto, it series-resonates at any of frequencies lying within at 1700MHz band, which is higher than the second frequency.
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公开(公告)号：EP0119628B1
公开(公告)日：1989-11-15
申请号：EP84103020.8
申请日：1984-03-19
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