公开(公告)号：US20050260960A1

公开(公告)日：2005-11-24

申请号：US11136208

申请日：2005-05-24

申请人： Masaki Yamamoto

发明人： Masaki Yamamoto

IPC分类号： H03J1/00 ,  H03J3/08 ,  H04B1/18 ,  H04N5/44 ,  H04N5/50

CPC分类号： H03J3/08 ,  H03J1/005 ,  H04N5/4446 ,  H04N5/50

摘要： A television tuner includes an IF output terminal for outputting an IF signal converted from a received television signal to an external source, and a channel-selection PLL circuit for converting a high voltage supplied from an external source to a tuning voltage and for supplying the tuning voltage to an internal tuned circuit. The IF output terminal and a high-voltage input terminal of the channel-selection PLL circuit are connected to each other via a first resistor.

摘要翻译： 电视调谐器包括：IF输出端子，用于将从接收到的电视信号转换的IF信号输出到外部源;以及频道选择PLL电路，用于将从外部源提供的高电压转换为调谐电压，并用于提供调谐 电压到内部调谐电路。 通道选择PLL电路的IF输出端子和高电压输入端子经由第一电阻器相互连接。

公开(公告)号：US06963110B2

公开(公告)日：2005-11-08

申请号：US10198408

申请日：2002-07-19

申请人： Agnes N. Woo ,  Kenneth R. Kindsfater ,  Fang Lu

发明人： Agnes N. Woo ,  Kenneth R. Kindsfater ,  Fang Lu

IPC分类号： H01F17/00 ,  H01L23/50 ,  H01L23/522 ,  H01L23/60 ,  H01L23/62 ,  H01L27/02 ,  H01L27/08 ,  H03B5/12 ,  H03B5/36 ,  H03D7/16 ,  H03D7/18 ,  H03G1/00 ,  H03H11/12 ,  H03J1/00 ,  H03J3/04 ,  H03J3/08 ,  H03J3/18 ,  H03L7/10 ,  H03L7/23 ,  H04B1/28 ,  H01L29/72

CPC分类号： H01L23/50 ,  H01F17/0006 ,  H01F17/0013 ,  H01F2017/0053 ,  H01F2021/125 ,  H01L23/5227 ,  H01L23/60 ,  H01L27/0248 ,  H01L27/0251 ,  H01L27/08 ,  H01L2924/0002 ,  H01L2924/3011 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/364 ,  H03D7/161 ,  H03D7/18 ,  H03G1/0029 ,  H03H11/1291 ,  H03J1/0075 ,  H03J3/04 ,  H03J3/08 ,  H03J3/185 ,  H03J2200/10 ,  H03L7/10 ,  H03L7/23 ,  H04B1/28 ,  H01L2924/00

摘要： An integrated receiver with channel selection and image rejection substantially implemented on a single CMOS integrated circuit is described. A receiver front end provides programable attenuation and a programable gain low noise amplifier. Frequency conversion circuitry advantageously uses LC filters integrated onto the substrate in conjunction with image reject mixers to provide sufficient image frequency rejection. Filter tuning and inductor Q compensation over temperature are performed on chip. The filters utilize multi track spiral inductors. The filters are tuned using local oscillators to tune a substitute filter, and frequency scaling during filter component values to those of the filter being tuned. In conjunction with filtering, frequency planning provides additional image rejection. The advantageous choice of local oscillator signal generation methods on chip is by PLL out of band local oscillation and by direct synthesis for in band local oscillator. The VCOs in the PLLs are centered using a control circuit to center the tuning capacitance range. A differential crystal oscillator is advantageously used as a frequency reference. Differential signal transmission is advantageously used throughout the receiver. ESD protection is provided by a pad ring and ESD clamping structure that maintains signal integrity. Also provided are shunts at each pin to discharge ESD build up. The shunts utilize a gate boosting structure to provide sufficient small signal RF performance, and minimal parasitic loading.

公开(公告)号：US20050212590A1

公开(公告)日：2005-09-29

申请号：US10806630

申请日：2004-03-23

申请人： Zhiwei Dong

发明人： Zhiwei Dong

IPC分类号： H03B1/00 ,  H03H11/12 ,  H03J1/00 ,  H03J3/08

CPC分类号： H03H11/0472 ,  H03J1/0008 ,  H03J3/08 ,  H03J2200/02 ,  H03J2200/28

摘要： A technique to achieve high-speed tuning of a Gm-C circuit, such as, for example, a Gm-C filter. In one embodiment, a master Gm-C time-constant circuit incorporates at least one element (either a transconductance or a capacitance) that is matched to a corresponding element (transconductance or capacitance) in the (slave) Gm-C circuit. A waveform generated by the master Gm-C time-constant circuit is used to control a sampler. In one embodiment, the sampler samples a precision counter so as to result in a sampler output having a polarity that steers the tuning voltage in the necessary direction. A tuning control stage coupled to the sampler output implements an algorithm that causes the tuning voltage to converge, with a predetermined precision, to the desired tuning voltage.

摘要翻译： 实现Gm-C电路的高速调谐的技术，例如Gm-C滤波器。 在一个实施例中，主Gm-C时间常数电路包括与（从）Gm-C电路中的相应元件（跨导或电容）匹配的至少一个元件（跨导或电容）。 由主Gm-C时间常数电路产生的波形用于控制采样器。 在一个实施例中，采样器对精度计数器进行采样，以产生具有在所需方向上调整调谐电压的极性的采样器输出。 耦合到采样器输出的调谐控制级实现了使调谐电压以预定精度收敛到期望的调谐电压的算法。

公开(公告)号：US06930565B1

公开(公告)日：2005-08-16

申请号：US10915487

申请日：2004-08-11

申请人： Adam S. Vishinsky

发明人： Adam S. Vishinsky

IPC分类号： H03J3/08 ,  H04B3/04

CPC分类号： H03J3/08 ,  H03J2200/08 ,  H03J2200/18

摘要： An automatic tuning scheme for two active band-pass filters where both filters operate on the signal while simultaneously being tuned using a reference signal. To allow that the amplitude of a reference signal is made small and since both filters demonstrate a good linearity the build-up of the inter-modulation distortion does not occur. The first band-pass filter is tuned with the reference falling into its pass-band. The second band-pass filter is also tuned with the reference placed into its pass-band. The reference is practically eliminated by the virtue of the complexity of the second band-pass filter. Assuming the filter passes the signal for positive frequencies if the reference is made a negative frequency by appropriate 90 degrees phase shifting it will be attenuated by at least 55 dB, which is a sufficient signal-to-reference ratio.

公开(公告)号：US06915114B2

公开(公告)日：2005-07-05

申请号：US10140523

申请日：2002-05-07

申请人： Shahla Khorram

发明人： Shahla Khorram

IPC分类号： H03J3/08 ,  H04B17/00

CPC分类号： H03J3/08

摘要： A method and apparatus for direct tuning of a component embedded within an integrated circuit includes processing that begins by providing a plurality of frequency dependent control input signals to an input of the integrated circuit. The processing continues for each of the plurality of frequency dependent control input signals by incrementally adjusting the power level of each frequency dependent controlled input signal until the signal strength of an output of the integrated circuit is at a desired signal strength level. The corresponding power level is recorded to produce an adjusted power level for the frequency dependent control input signal. The adjusted power level of each of the plurality of frequency dependent control input signals is plotted to produce a signal strength to frequency relationship. The processing continues by comparing the signal strength to frequency relationship with a desired signal strength to frequency relationship. The process then continues by tuning the component such that the signal strength to frequency relationship more closely resembles the desired signal strength to frequency relationship when the comparison was unfavorable.

摘要翻译： 用于直接调谐嵌入在集成电路内的部件的方法和装置包括通过向集成电路的输入提供多个与频率相关的控制输入信号开始的处理。 通过逐渐调整每个依赖于频率的受控输入信号的功率电平，直到集成电路的输出的信号强度处于期望的信号强度水平，对于多个频率相关的控制输入信号中的每一个继续处理。 记录相应的功率电平以产生用于频率相关控制输入信号的调整功率电平。 绘制多个频率相关控制输入信号中的每一个的经调整的功率电平以产生信号强度与频率关系。 通过将信号强度与频率关系与期望的信号强度与频率关系进行比较来继续处理。 然后，该过程通过调谐组件继续，使得当比较不利时，信号强度与频率关系更接近于期望的信号强度与频率关系。

公开(公告)号：US20050143031A1

公开(公告)日：2005-06-30

申请号：US10503789

申请日：2002-01-21

申请人： Oswald Moonen ,  Peter Rutten ,  Stephanus Crijns

发明人： Oswald Moonen ,  Peter Rutten ,  Stephanus Crijns

IPC分类号： H04B1/26 ,  H03D7/18 ,  H03J3/08 ,  H04B1/30 ,  H04B1/40 ,  H04B1/18

CPC分类号： H04B1/005 ,  H03J3/08 ,  H04B1/30 ,  H04B1/406

摘要： A multi-band receiver for receiving an input signal having a frequency situated either in a first band or in a second band. The receiver comprising a mixer for combining an amplified signal having substantially the same frequency as the input signal with a periodical signal generated by a local oscillator. The mixer generates an intermediate frequency signal, the intermediate frequency signal (IF) being inputted to an IF band-pass filter. A central frequency of the band-pass filter is substantially equal to a frequency of the intermediate frequency signal. The receiver is characterized in that the central frequency of the IF band-pass filter is substantially independent of a combining mode of the amplified signal and the periodical signal, the combining mode being selected from an upper heterodyning mode and a lower heterodyning mode.

摘要翻译： 一种用于接收具有位于第一频带或第二频带中的频率的输入信号的多频带接收机。 接收机包括用于将具有与输入信号基本上相同的频率的放大信号与由本地振荡器产生的周期信号组合的混频器。 混频器产生中频信号，中频信号（IF）被输入到IF带通滤波器。 带通滤波器的中心频率基本上等于中频信号的频率。 接收器的特征在于，IF带通滤波器的中心频率基本上与放大信号和周期信号的组合模式无关，组合模式选自上外插模式和下外插模式。

公开(公告)号：US06847271B2

公开(公告)日：2005-01-25

申请号：US10381364

申请日：2001-09-20

申请人： Christian Korden ,  Thomas Ostertag ,  Werner Ruile

发明人： Christian Korden ,  Thomas Ostertag ,  Werner Ruile

IPC分类号： G06K19/16 ,  H03H3/04 ,  H03H9/64 ,  H03J3/08 ,  H03J3/28 ,  H03J5/02 ,  H03L7/18 ,  H03H9/54

CPC分类号： H03L7/18 ,  H03H3/04 ,  H03H9/6403 ,  H03H2009/02196 ,  H03J3/08 ,  H03J3/28 ,  H03J5/0272 ,  H03L7/0805

摘要： A component having an acoustically active material, whose acoustic constants can be at least partially altered. The acoustically active material is located at least partially at a phase transition point and/or in the vicinity of a phase transition point.

摘要翻译： 具有声学活性材料的组分，其声学常数可以至少部分地改变。 声学活性材料至少部分地位于相变点和/或相转变点附近。

公开(公告)号：US6122496A

公开(公告)日：2000-09-19

申请号：US31602

申请日：1998-02-27

申请人： Kenji Yoshioka

发明人： Kenji Yoshioka

IPC分类号： H04B1/26 ,  H03H11/12 ,  H03J3/08 ,  H04B1/16 ,  H04B1/10

CPC分类号： H03J3/08 ,  H03H11/1239

摘要： When the frequency band of an intermediate frequency (IF) signal input to a filter rises due to temperature variation, the center voltage corresponding to the IF signal also rises. As a result, a difference occurs between the center voltage and a preselected reference voltage. An output current produced by converting the difference is so output as to increase a control current, thereby shifting the frequency characteristic of the filter to the higher frequency side. When the frequency band of the IF signal falls due to temperature variation, the center voltage also falls. The resulting difference between the center voltage and the reference voltage is also transformed to an output current. This output current is so output as to reduce the control current with the result that the frequency characteristic of the filter is shifted to the lower frequency side.

摘要翻译： 当输入到滤波器的中频（IF）信号的频带由于温度变化而升高时，对应于IF信号的中心电压也上升。 结果，在中心电压和预选参考电压之间出现差异。 通过转换差异产生的输出电流被输出以增加控制电流，从而将滤波器的频率特性转换到较高频率侧。 当IF信号的频带由于温度变化而下降时，中心电压也下降。 中心电压和参考电压之间的差异也被转换为输出电流。 该输出电流被输出以减少控制电流，结果滤波器的频率特性转移到较低频率侧。

公开(公告)号：US4272743A

公开(公告)日：1981-06-09

申请号：US32026

申请日：1979-04-20

申请人： Robert M. Evans

发明人： Robert M. Evans

IPC分类号： H03J3/08 ,  H04N5/44 ,  H03H3/00 ,  H03H7/01

CPC分类号： H04N5/4446 ,  H03J3/08

摘要： A method of tuning a trap circuit to a desired frequency is provided. A constant amplitude signal is applied to the trap circuit in a progression of successively different frequency increments. The frequency increments cover a frequency range including the desired frequency. The amplitude of the signal, as modified by the trap circuit is detected and stored at each of the different frequency increments. Successive ones of the stored amplitude values are compared until an amplitude difference is found which is greater than a predetermined minimum difference and is of a polarity indicative of an increase in amplitude with the progression, and is a successor of an amplitude difference which is greater than the predetermined minimum difference and of a polarity indicative of a decrease in amplitude with the progression. The frequency at which the inflection point occurs, as indicated by the two-named amplitude differences, represents the null frequency of the trap circuit. The trap circuit is then tuned to align the null frequency with the desired tuning frequency.

摘要翻译： 提供了一种将陷波电路调谐到所需频率的方法。 恒定幅度信号以连续不同的频率增量的进程施加到陷波电路。 频率增量覆盖包括所需频率的频率范围。 由陷波电路修改的信号的振幅被检测并以不同的频率增量中的每一个存储。 比较存储的振幅值中的相继值，直到找到大于预定最小差的幅度差，并且具有指示随着进展而增加幅度的极性，并且是幅度差的继续大于 预定的最小差异和指示随着进展而减小幅度的极性。 发生拐点的频率，如由两个命名的振幅差所示，表示陷波电路的零频率。 然后调谐陷波电路以使零频率与期望的调谐频率对准。

公开(公告)号：US4263619A

公开(公告)日：1981-04-21

申请号：US32025

申请日：1979-04-20

申请人： Gerald E. Theriault

发明人： Gerald E. Theriault

IPC分类号： H03J3/08 ,  H04N5/44 ,  H04N5/60

CPC分类号： H04N5/4446 ,  H03J3/08

摘要： A network is provided for attenuating the adjacent channel sound carrier signal in a television receiver. First and second trap circuits are serially coupled intermediate the R.F. mixer and the first I.F. amplifier. One of the trap circuits is tuned to a frequency in the vicinity of and above the nominal frequency of the adjacent channel sound carrier, and the other is tuned to a frequency in the vicinity of and below that of the adjacent channel sound carrier. The two trap circuits are mutually coupled to a degree necessary to produce a composite response curve exhibiting a substantially constant level of maximum attenuation in the vicinity of the nominal frequency location of the adjacent channel sound carrier. The trap circuits provide attenuation in excess of that required to eliminate adjacent channel sound carrier interference over a bandwidth sufficient to encompass expected carrier deviation due to frequency modulation, carrier mislocation, and trap mistuning.

摘要翻译： 提供一种用于衰减电视接收机中的相邻信道声音载波信号的网络。 第一和第二陷波电路在R.F.之间串联耦合。 搅拌机和第一台 放大器 陷波电路中的一个被调谐到相邻声道声音载波的标称频率附近和之上的频率，另一个被调谐到相邻声道声音载体附近的频率以下。 两个陷波电路被相互耦合到产生复数响应曲线所需的程度，该复合响应曲线在相邻声道声载波的标称频率位置附近表现出基本恒定的最大衰减水平。 陷波电路提供的衰减超过了在足以包含由于频率调制，载波失配和陷阱失谐引起的预期载波偏移的带宽上消除相邻信道声载波干扰所需的衰减。