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61. 发明申请

US20080012654A1 LINEARIZED VARIABLE-CAPACITANCE MODULE AND LC RESONANCE CIRCUIT USING THE SAME 审中-公开
标题翻译：线性可变电容模块和LC谐振电路
公开(公告)号：US20080012654A1
公开(公告)日：2008-01-17
申请号：US11768416
申请日：2007-06-26
申请人： Seon Ho HAN , Cheon Soo KIM
发明人： Seon Ho HAN , Cheon Soo KIM
IPC分类号： H03B5/08
CPC分类号： H03J3/185 , H03B5/1253 , H03B5/1265 , H03B5/1293 , H03B2200/0048 , H03B2200/005 , H03J7/045 , H03J2200/10 , H03J2200/36 , H03L7/099 , H03L2207/06
摘要： Provided are a linearized variable-capacitance module for a voltage-controlled oscillator (VCO) and an LC resonance circuit using the same. The VCO is a circuit for outputting a certain frequency in response to an input control signal (voltage or current). The VCO includes an inductor, a variable capacitor (or a varactor), and an active device for compensating for loss of energy caused by the inductor and varactor. The frequency of the VCO is varied by changing inductance or capacitance. In general, the VCO includes a variable-capacitance device (i.e., the varactor) so that the frequency of the VCO may be varies by changing the capacitance via a control voltage. In most cases, the frequency of the VCO varies nonlinearly with respect to the control voltage. The nonlinear variation in the frequency of the VCO results in a great variation in a VCO gain within a certain control voltage range. When a phase locked loop (PLL) includes the VCO, the variation in the VCO gain leads to a variation in the entire loop gain, thus causing a variation in output phase noise. To solve this problem, a varactor designed to have a capacitance that varies linearly with a control voltage is provided so that a VCO gain can be held constant. The variable-capacitance module includes a plurality of variable-capacitance devices with respectively different linear variation regions on an application voltage axis. Also, the variable-capacitance devices are coupled in common and receive a control voltage at one end while each receiving a different fixed voltage at the other end.
摘要翻译：提供一种用于压控振荡器（VCO）的线性化可变电容模块和使用其的LC谐振电路。 VCO是用于响应于输入控制信号（电压或电流）输出特定频率的电路。 VCO包括电感器，可变电容器（或变容二极管）和用于补偿由电感器和变容二极管引起的能量损失的有源器件。通过改变电感或电容来改变VCO的频率。通常，VCO包括可变电容器件（即变容二极管），使得可以通过经由控制电压改变电容来改变VCO的频率。在大多数情况下，VCO的频率相对于控制电压非线性变化。 VCO的频率的非线性变化导致在一定的控制电压范围内的VCO增益的巨大变化。当锁相环（PLL）包括VCO时，VCO增益的变化导致整个环路增益的变化，从而导致输出相位噪声的变化。为了解决这个问题，提供了设计成具有随着控制电压线性变化的电容的变容二极管，使得VCO增益可以保持恒定。可变电容模块包括在施加电压轴上分别具有不同线性变化区域的多个可变电容器件。此外，可变电容器件共同耦合，并且在一端接收控制电压，而在另一端接收不同的固定电压。

62. 发明申请

US20030190891A1 Initial frequency synchronization mechanism 失效
标题翻译：初始频率同步机制
公开(公告)号：US20030190891A1
公开(公告)日：2003-10-09
申请号：US09731821
申请日：2000-12-08
发明人： Rony Ashkenazi
IPC分类号： H04B001/40
CPC分类号： H03J7/045
摘要： Method for acquiring frequency of a desired channel having a carrier frequency FMAIN, for a dynamic receiver frequency FMOBILE, from a starting frequency FSTART, in the presence of high power adjacent interfering channels, wherein the starting frequency FSTART is shifted from FMAIN by not more than a predetermined frequency gap nullF, the method includes the steps of determining a first frequency boundary and a second frequency boundary, detecting channels within a filtering bandwidth, selecting a dominant channel from the detected channels, progressing the dynamic receiver frequency FMOBILE towards the carrier frequency of the dominant channel, detecting when the step of progressing has exceeded one of the first frequency boundary and the second frequency boundary, restarting the step of detecting channels, from the other of the one of the first frequency boundary and the second frequency boundary, and repeating from the step of detecting channels.
摘要翻译：用于在存在高功率相邻干扰信道的情况下从起始频率FSTART获取用于动态接收机频率FMOBILE的具有载波频率FMAIN的期望信道的频率的方法，其中起始频率FSTART从FMAIN偏移不大于预定的频率间隔DeltaF，该方法包括以下步骤：确定第一频率边界和第二频率边界，检测滤波带宽内的信道，从检测到的信道中选择主要信道，使动态接收机频率FMOBILE朝着载波频率所述主通道，检测所述进行步骤何时已经超过所述第一频率边界和所述第二频率边界之一，从所述第一频率边界和所述第二频率边界中的另一个开始重新检测信道的步骤，并重复从检测渠道的步骤。

63. 发明授权

US06469750B1 Automatic fine-tuning control voltage generating circuit having level shift circuit 失效
标题翻译：具有电平移位电路的自动微调控制电压发生电路
公开(公告)号：US06469750B1
公开(公告)日：2002-10-22
申请号：US09453144
申请日：1999-12-02
申请人： Ryuusuke Fujita , Akira Kawamura
发明人： Ryuusuke Fujita , Akira Kawamura
IPC分类号： H04H550
CPC分类号： H03J7/045 , H04N5/50
摘要： An automatic fine-tuning control (AFT) voltage generating circuit is provided in which a general-purpose integrated circuit for an intermediate frequency (IF IC) is used, which is capable of easily detecting a low level point in a simple manner without increasing the manufacturing cost. The automatic fine-tuning control voltage generating circuit includes a surface-acoustic-wave (SAW) filter for filtering an intermediate video frequency signal; an IF IC, connected to the SAW filter, for detecting the filtered intermediate video frequency signal and for generating an AFT voltage; and a level shift circuit, connected to the IF IC, for shifting the non-signal-time level of the automatic fine-tuning control voltage generated by the IF IC toward a direction in which the level is lower than an intermediate level between a high level and a low level.
摘要翻译：提供一种自动微调控制（AFT）电压产生电路，其中使用用于中频（IF IC）的通用集成电路，其能够以简单的方式容易地检测低电平点而不增加制造成本。所述自动微调控制电压发生电路包括用于滤波中间视频信号的表面声波（SAW）滤波器; 连接到SAW滤波器的IF IC，用于检测滤波的中间视频信号并产生AFT电压; 以及连接到IF IC的电平移位电路，用于将由IF IC产生的自动微调控制电压的非信号时间电平移向电平低于高电平之间的中间电平的方向水平和低水平。

64. 发明授权

US06175722B1 Initial frequency synchronization mechanism 失效
标题翻译：初始频率同步机制
公开(公告)号：US06175722B1
公开(公告)日：2001-01-16
申请号：US09012361
申请日：1998-01-23
申请人： Rony Ashkenazi
发明人： Rony Ashkenazi
IPC分类号： H04B1500
CPC分类号： H03J7/045
摘要： Method for acquiring frequency of a desired channel having a carrier frequency FMAIN, for a dynamic receiver frequency FMOBILE, from a starting frequency FSTART, in the presence of high power adjacent interfering channels, wherein the starting frequency FSTART is shifted from FMAIN by not more than a predetermined frequency gap &Dgr;F, the method includes the steps of determining a first frequency boundary and a second frequency boundary, detecting channels within a filtering bandwidth, selecting a dominant channel from the detected channels, progressing the dynamic receiver frequency FMOBILE towards the carrier frequency of the dominant channel, detecting when the step of progressing has exceeded one of the first frequency boundary and the second frequency boundary, restarting the step of detecting channels, from the other of the one of the first frequency boundary and the second frequency boundary, and repeating from the step of detecting channels.
摘要翻译：用于在存在高功率相邻干扰信道的情况下从起始频率FSTART获取用于动态接收机频率FMOBILE的具有载波频率FMAIN的期望信道的频率的方法，其中起始频率FSTART从FMAIN偏移不大于预定的频率间隔DELTAF，该方法包括以下步骤：确定第一频率边界和第二频率边界，检测滤波带宽内的信道，从检测到的信道中选择主要信道，使动态接收机频率FMOBILE朝着载波频率所述主通道，检测所述进行步骤何时已经超过所述第一频率边界和所述第二频率边界之一，从所述第一频率边界和所述第二频率边界中的另一个开始重新检测信道的步骤，并重复从检测渠道的步骤。

65. 发明授权

US4450587A Tuning arrangement for providing relatively uniform automatic fine tuning sensitivity 失效
标题翻译：调谐装置提供相对均匀的自动微调灵敏度
公开(公告)号：US4450587A
公开(公告)日：1984-05-22
申请号：US325313
申请日：1981-11-27
申请人： Billy W. Beyers, Jr.
发明人： Billy W. Beyers, Jr.
IPC分类号： H03J7/08 , H03J5/02 , H03J7/04 , H04B1/26
CPC分类号： H03J5/0254 , H03J7/045
摘要： A tuning control system includes a pulse converter for converting a digital word to a corresponding pulse signal having pulses the width or frequency of which represents the magnitude of a tuning voltage associated with a respective channel. The pulse signal is applied to a filter which produces the tuning voltage. An automatic fine tuning (AFT) voltage is generated by an AFT discriminator in an IF section and also applied to the filter to modify the magnitude of the tuning voltage to correct for any frequency deviation of the IF signal. To make the response of the tuner to changes of the AFT voltage more uniform for different channels, the AFT voltage is applied to the filter through a switch which is selectively closed in response to the pulses of the pulse signal so as to change the effective amplitude of the AFT voltage applied to the filter as a function of the channel selected.
摘要翻译：调谐控制系统包括用于将数字字转换成具有其宽度或频率的脉冲的相应脉冲信号的脉冲转换器，其具有表示与相应通道相关联的调谐电压的幅度。脉冲信号被施加到产生调谐电压的滤波器。通过IF部分中的AFT鉴频器产生自动微调（AFT）电压，并且还将其施加到滤波器以修改调谐电压的幅度以校正IF信号的任何频率偏差。为了使调谐器对不同通道的AFT电压变化的响应更均匀，AFT电压通过开关被施加到滤波器，该开关响应于脉冲信号的脉冲而选择性地闭合，以便改变有效振幅作为所选通道的函数的施加到滤波器的AFT电压。

66. 发明授权

US3832638A Output control device of fm receiver 失效
标题翻译： FM接收机的输出控制装置
公开(公告)号：US3832638A
公开(公告)日：1974-08-27
申请号：US30668272
申请日：1972-11-15
申请人： HITACHI LTD
发明人： OHASHI S , FUKUSHIMA I
IPC分类号： H04B1/16 , H03D3/00 , H03D3/10 , H03G11/04 , H03G11/06 , H03J3/14 , H03J7/04
CPC分类号： H03J7/045 , H03D3/001 , H03G11/06
摘要： An output control device for use in FM receivers comprises a low-pass filter for deriving only the d-c component from the output of a frequency discriminator, and a rectifier circuit for full-wave rectifying the output of the low-pass filter. The output of the rectifier circuit is applied to the amplitude limiter which is connected to the input circuit of the frequency discriminator, to cause the amplitude limiting level of the amplitude limiter to be changed, thereby minimizing the nonlinear distortion developed in the frequency discriminator due to the deviation in the tuning of the FM receiver.
摘要翻译：用于FM接收机的输出控制装置包括用于仅从鉴频器的输出中导出d-c分量的低通滤波器和用于全波整流低通滤波器的输出的整流电路。整流电路的输出被施加到与频率鉴别器的输入电路连接的幅度限制器，以使幅度限制器的幅度限制电平发生变化，从而最小化频率鉴别器中产生的非线性失真由于FM接收机的调谐偏差。

67. 发明授权

US3308403A Oscillator circuit 失效
公开(公告)号：US3308403A
公开(公告)日：1967-03-07
申请号：US35716564
申请日：1964-04-03
申请人： SONY CORP
发明人： YASUHARU KUBOTA , TSUNEO UTSUNOMIYA
IPC分类号： H03B5/12 , H03J7/04
CPC分类号： H03J7/045 , H03B5/1203 , H03B5/1231 , H03B5/124 , H03B5/1256

68. 发明授权

US3054965A Automatic bandwidth control with a.f.c. 失效
标题翻译：自动带宽控制与a.f.c.
公开(公告)号：US3054965A
公开(公告)日：1962-09-18
申请号：US84969559
申请日：1959-10-29
申请人： JENSEN GAROLD K , MCGEOGH JAMES E
发明人： JENSEN GAROLD K , MCGEOGH JAMES E
IPC分类号： H03G5/24 , H03J7/04
CPC分类号： H03J7/045 , H03G5/24

69. 发明授权

US2763779A Control-circuit arrangement 失效
标题翻译：控制电路布置
公开(公告)号：US2763779A
公开(公告)日：1956-09-18
申请号：US21939251
申请日：1951-03-12
申请人： DE GROOT FOLKERT ALBERT , INGEN SCHENAN BERNARDUS WILLEM
发明人： DE GROOT FOLKERT ALBERT , INGEN SCHENAN BERNARDUS WILLEM
IPC分类号： H03J7/04
CPC分类号： H03J7/045

70. 发明授权

US2551348A Electrical apparatus 失效
公开(公告)号：US2551348A
公开(公告)日：1951-05-01
申请号：US58525745
申请日：1945-03-28
申请人： PHILCO CORP
发明人： SUNSTEIN DAVID E
IPC分类号： H03J7/04 , H03K4/00 , H03K5/01
CPC分类号： H03J7/045 , H03K4/00 , H03K5/01

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