公开(公告)号：US20050048936A1

公开(公告)日：2005-03-03

申请号：US10695758

申请日：2003-10-30

申请人： Young Jin Lee ,  Hyo Seok Kwon ,  Won Jin Baek ,  Jin Taek Lee ,  Hyun Hwan Yoo ,  Jeong Ki Choi

发明人： Young Jin Lee ,  Hyo Seok Kwon ,  Won Jin Baek ,  Jin Taek Lee ,  Hyun Hwan Yoo ,  Jeong Ki Choi

IPC分类号： H04N5/50 ,  H03J1/00 ,  H01Q11/12

CPC分类号： H03J1/0041 ,  H03J2200/02

摘要： Disclosed herein is a digital automatic fine tuning method and apparatus, which is capable of detecting a difference between a nominal frequency and an intermediate frequency generated in a tuner using a counter, and applying the counted data of the counter as a fine tuning value for the intermediate frequency without using a decoder by controlling the reset and preset operations of the counter that counts the frequency of the intermediate frequency.

摘要翻译： 这里公开了一种数字自动微调方法和装置，其能够使用计数器检测在调谐器中产生的标称频率和中频之间的差异，并将计数器的计数数据应用于微调值 通过控制对中频的频率进行计数的计数器的复位和预置操作而不使用解码器的中频。

公开(公告)号：US07206565B2

公开(公告)日：2007-04-17

申请号：US10421700

申请日：2003-04-24

申请人： Seung Min Oh ,  Hyo Seok Kwon ,  Yoo Sam Na ,  Gi Won Choi

发明人： Seung Min Oh ,  Hyo Seok Kwon ,  Yoo Sam Na ,  Gi Won Choi

IPC分类号： H04B1/26

CPC分类号： H04N5/4446 ,  H04B1/16

摘要： The present invention relate to a wideband frequency generating apparatus using a frequency dividing method of dividing a frequency signal of a voltage control oscillator to expand a frequency generating range. The apparatus comprises an oscillator unit generating a predetermined frequency signal, a mixer having a first input coupled to the oscillator unit to generate a difference signal by mixing the predetermined frequency signal with a signal inputted to a second input of the mixer, a first switch tuned on/off and coupling the predetermined frequency signal to an output of the mixer, a second switch turned on/off and coupling the output of the mixer to the second input of the mixer to form a feedback loop, a ½ frequency divider dividing the output of the mixer by ½ to generate a divided signal, a third switch tuned on/off and coupling the divided signal of the ½ frequency divider to the second input of the mixer unit, and a control logic unit generating on/off control signals turning on/off the mixer, the first switch, the second switch, the third switch in accordance with a selection of frequency generating ranges.

摘要翻译： 本发明涉及一种使用分频方法来分频压控振荡器的频率信号以扩大频率产生范围的宽带频率发生装置。 该装置包括产生预定频率信号的振荡器单元，混合器具有耦合到振荡器单元的第一输入，以通过将预定频率信号与输入到混频器的第二输入端的信号混合来产生差分信号，第一开关调谐 开/关并将预定频率信号耦合到混频器的输出，第二开关导通/截止并将混频器的输出耦合到混频器的第二输入端以形成反馈回路，½分频器将输出 的混频器产生分频信号，第三开关调谐开/关并将1/2分频器的分频信号耦合到混频器单元的第二输入端;以及控制逻辑单元，其产生开启/关闭控制信号 根据频率发生范围的选择，关闭混频器，第一开关，第二开关，第三开关。

公开(公告)号：US07177895B2

公开(公告)日：2007-02-13

申请号：US10409076

申请日：2003-04-09

申请人： Yoo Sam Na ,  Hyo Seok Kwon ,  Ki Won Choi ,  Seung Min Oh

发明人： Yoo Sam Na ,  Hyo Seok Kwon ,  Ki Won Choi ,  Seung Min Oh

IPC分类号： G06G7/02

CPC分类号： H03H11/1291

摘要： A linear channel select filter for an Intermediate Frequency selector of a satellite broadcasting tuner, linearly changes a desired frequency by adjusting an output current, and includes: a transconductance (GM) current cell controller for determining a control voltage according to a select signal, generating the output current according to an differential input voltage, linearly controlling the output current according to the control voltage, and providing a linearly variable resistance according to the linearly controlled output current, and a capacitor circuit coupled to the GM cell controller to provide a capacitance to generate a cutoff frequency voltage according to the output current and the variable resistance. An occupying area and a size of the filter are reduced.

摘要翻译： 一种用于卫星广播调谐器的中频选择器的线性通道选择滤波器，通过调节输出电流来线性地改变期望频率，并且包括：跨导（GM）电流单元控制器，用于根据选择信号确定控制电压，产生 根据差分输入电压的输出电流，根据控制电压线性控制输出电流，并根据线性控制的输出电流提供线性可变电阻;以及电容器电路，耦合到GM电池控制器，以提供电容 根据输出电流和可变电阻产生截止频率电压。 减少了占地面积和过滤器的尺寸。

公开(公告)号：US07181186B2

公开(公告)日：2007-02-20

申请号：US10462609

申请日：2003-06-17

申请人： Seung Min Oh ,  Hyo Seok Kwon

发明人： Seung Min Oh ,  Hyo Seok Kwon

IPC分类号： H04B1/26

CPC分类号： H03D3/009 ,  H03D7/1441 ,  H03D7/1458 ,  H03D7/1483 ,  H03D7/165

摘要： A frequency conversion apparatus having a mixer eliminates phase miss-matching between two intermediate frequency (IF) signals having the same frequency and a 90 degree difference in phase. The frequency conversion apparatus for compensating for phase mismatching of first and second IF signal in response to an RF input signal transmitted through an RF input terminal includes a quadrature signal generator (QSG) outputting first and second oscillating frequency signals having a 90 degre difference in phase, a first mixer mixing the RF input signal with a first resultant frequency signal having a first resultant phase and generated from the first oscillating frequency signal and an inverted signal of the second oscillating frequency signal, and a second mixer mixing the RF signal with a second resultant frequency signal having a second resultant phase and generated from the second oscillating frequency signal and an inverted signal of the first second oscillating frequency signal. The frequency conversion apparatus having a mixer improving a signal-to-noise (SN) ratio and increasing an image-rejection ratio by correcting phase miss-matching.

摘要翻译： 具有混频器的频率转换装置消除了具有相同频率和90度相位差的两个中频（IF）信号之间的相位缺失匹配。 用于响应于通过RF输入端子发送的RF输入信号来补偿第一和第二IF信号的相位失配的变频装置包括正交信号发生器（QSG），其输出具有90°相位差的第一和第二振荡频率信号 混合RF输入信号与具有第一合成相位并由第一振荡频率信号产生的第一合成频率信号和第二振荡频率信号的反相信号的第一混合器，以及将RF信号与第二振荡频率信号混合的第二混频器 合成频率信号具有由第二振荡频率信号产生的第二合成相位和第一第二振荡频率信号的反相信号。 该变频装置具有通过校正相位误差匹配来提高信噪比（SN）比并提高图像抑制比的混频器。

公开(公告)号：US07076221B2

公开(公告)日：2006-07-11

申请号：US10695758

申请日：2003-10-30

申请人： Young Jin Lee ,  Hyo Seok Kwon ,  Won Jin Baek ,  Jin Taek Lee ,  Hyun Hwan Yoo ,  Jeong Ki Choi

发明人： Young Jin Lee ,  Hyo Seok Kwon ,  Won Jin Baek ,  Jin Taek Lee ,  Hyun Hwan Yoo ,  Jeong Ki Choi

IPC分类号： H04B1/18 ,  H04N5/50

CPC分类号： H03J1/0041 ,  H03J2200/02

摘要： Disclosed herein is a digital automatic fine tuning method and apparatus, which is capable of detecting a difference between a nominal frequency and an intermediate frequency generated in a tuner using a counter, and applying the counted data of the counter as a fine tuning value for the intermediate frequency without using a decoder by controlling the reset and preset operations of the counter that counts the frequency of the intermediate frequency.

摘要翻译： 这里公开了一种数字自动微调方法和装置，其能够使用计数器检测在调谐器中产生的标称频率和中频之间的差异，并将计数器的计数数据应用于微调值 通过控制对中频的频率进行计数的计数器的复位和预置操作而不使用解码器的中频。

公开(公告)号：US07010287B2

公开(公告)日：2006-03-07

申请号：US10464780

申请日：2003-06-19

申请人： Seung Min Oh ,  Hyo Seok Kwon

发明人： Seung Min Oh ,  Hyo Seok Kwon

IPC分类号： H04B1/26

CPC分类号： H03B27/00 ,  H03K5/00006 ,  H03K2005/00286

摘要： Disclosed is a quadrature signal generator for generating an in-phase signal and a quadrature-phase signal, which is capable of generating a quadrature signal having the same frequency as a differential oscillating frequency, using a feedback control system. The quadrature signal generator includes an oscillator for generating a differential oscillation frequency signal having predetermined differential oscillation frequencies; a feedback type frequency doubler for generating a differential frequency signal having differential frequency components corresponding to differential frequency components of a frequency sum signal obtained by summing the differential oscillation frequency signal received from the oscillator and a differential feedback signal received at the differential feedback terminal; and a frequency divider for dividing the differential frequency signal received at the differential input terminal thereof by 2, thereby generating a quadrature signal consisting of two differential output frequency signals to supply at least one differential output frequency signal of the quadrature signal to the feedback type frequency doubler as the differential feedback signal.

摘要翻译： 公开了一种正交信号发生器，其使用反馈控制系统产生能够产生具有与差分振荡频率相同的频率的正交信号的同相信号和正交相位信号。 正交信号发生器包括用于产生具有预定差分振荡频率的差分振荡频率信号的振荡器; 反馈型倍频器，用于产生具有对应于通过将从振荡器接收的差分振荡频率信号相加而获得的频率和信号的差分频率分量的差分频率分量和在差分反馈端子处接收的差分反馈信号的差分频率信号; 以及分频器，用于将在差分输入端接收的差分频率信号除以2，从而产生由两个差分输出频率信号组成的正交信号，以将正交信号的至少一个差分输出频率信号提供给反馈类型频率 倍增器作为差分反馈信号。

公开(公告)号：US06882233B2

公开(公告)日：2005-04-19

申请号：US10461436

申请日：2003-06-16

申请人： Seung Min Oh ,  Hyo Seok Kwon

发明人： Seung Min Oh ,  Hyo Seok Kwon

IPC分类号： H03B5/08 ,  H03B1/00 ,  H03B5/12

CPC分类号： H03B5/1228 ,  H03B5/1212 ,  H03B5/1225 ,  H03B5/1243 ,  H03B5/1265 ,  H03B5/1293 ,  H03B2201/0208

摘要： The present invention relates to a variable oscillation frequency resonance circuit and voltage controlled oscillator using the same, which includes an inductance element, frequency varying means, and oscillation band varying means. The oscillation band varying means is provided with one or more capacitance element pairs and one or more differential switching element pairs each being arranged between capacitance elements of each of the capacitance element pairs, with differential switching elements of each of the differential switching element pairs being arranged in parallel with each other, to allow a corresponding capacitance element pair to be connected to the inductance element in response to second control signals.

摘要翻译： 本发明涉及一种可变振荡频率谐振电路和使用该可变振荡频率谐振电路的压控振荡器，其包括电感元件，频率变化装置和振荡频带变化装置。 振荡频带改变装置设置有一个或多个电容元件对和一个或多个差分开关元件对，每个差分开关元件对被布置在每个电容元件对的电容元件之间，差动开关元件对中的每一个的差分开关元件被布置 彼此并联以允许相应的电容元件对响应于第二控制信号而连接到电感元件。