公开(公告)号：US20070149143A1

公开(公告)日：2007-06-28

申请号：US11583911

申请日：2006-10-20

申请人： Dae-yeon Kim ,  Hyun-koo Kang ,  Hee-seung Kim

发明人： Dae-yeon Kim ,  Hyun-koo Kang ,  Hee-seung Kim

IPC分类号： H04B1/40 ,  H04B1/06

CPC分类号： H04B1/0071 ,  H04B1/0078

摘要： A multiple local oscillation frequency generation apparatus which can generate local oscillation frequencies in at least two frequency bands and a wireless transceiver having the multiple local oscillation frequency generation apparatus are provided. The local oscillation frequency generation apparatus includes: an oscillation unit which comprises a plurality of VCOs that provide at least two local oscillation signals having different frequencies for modulating/demodulating RF signals in at least two frequency bands; a PLL which locks the frequencies of the local oscillation signals provided by the VCOs; a first switch which selects one of the local oscillation signal provided the VCOs according to a frequency band of a RF signal; a frequency conversion unit which converts the frequency of the selected local oscillation signal; and a phase shift unit which generates I-phase and Q-phase local oscillation signals by shifting the phase of a signal output by the frequency conversion unit.

摘要翻译： 提供了可以在至少两个频带中产生本地振荡频率的多本地振荡频率产生装置和具有多个本地振荡频率产生装置的无线收发器。 本地振荡频率发生装置包括：振荡单元，其包括多个VCO，其提供具有不同频率的至少两个本地振荡信号，用于在至少两个频带中调制/解调RF信号; PLL，其锁定由VCO提供的本地振荡信号的频率; 第一开关，其根据RF信号的频带选择提供VCO的本地振荡信号之一; 频率转换单元，其转换所选择的本地振荡信号的频率; 以及相移单元，通过移位由变频单元输出的信号的相位来产生I相和Q相本地振荡信号。

公开(公告)号：US20050184909A1

公开(公告)日：2005-08-25

申请号：US11060532

申请日：2005-02-18

申请人： Nikolai Tchistiakov ,  Seong-sin Joo ,  Dae-yeon Kim ,  Weon-kyo Jung ,  Hyun-koo Kang

发明人： Nikolai Tchistiakov ,  Seong-sin Joo ,  Dae-yeon Kim ,  Weon-kyo Jung ,  Hyun-koo Kang

IPC分类号： H01Q1/38 ,  H01Q5/00 ,  H01Q5/50 ,  H01Q9/28

CPC分类号： H01Q9/285 ,  H01Q1/38 ,  H01Q5/50

摘要： A wide band antenna, which has a wide frequency band so that it can be used in a wireless local area network (WLAN) and can be manufactured in a small size at a low cost, is provided. The wide band antenna includes a first antenna unit, a supply cable, a first connector coupler, a second antenna unit, a balun, a stub, and a second connector coupler. A frequency band increases when coupling occurs between the stub and the first antenna unit or the second antenna unit.

摘要翻译： 提供了宽频带天线，其具有宽频带，使得其可以在无线局域网（WLAN）中使用，并且可以以低成本制造成小尺寸。 宽带天线包括第一天线单元，供电电缆，第一连接器耦合器，第二天线单元，平衡 - 不平衡变换器，短线和第二连接器耦合器。 当短截线与第一天线单元或第二天线单元之间发生耦合时，频带增加。

公开(公告)号：US07439811B2

公开(公告)日：2008-10-21

申请号：US11431555

申请日：2006-05-11

申请人： Dae-yeon Kim ,  Hyun-koo Kang ,  Jae-young Ryu ,  Ju-ho Son ,  Jeong-ho Lee

发明人： Dae-yeon Kim ,  Hyun-koo Kang ,  Jae-young Ryu ,  Ju-ho Son ,  Jeong-ho Lee

IPC分类号： H03F1/44

CPC分类号： H03F3/45188 ,  H03F3/193 ,  H03F2200/294 ,  H03F2203/45386 ,  H03F2203/45481

摘要： A broadband low noise amplifier and amplification method is provided. The broadband low noise amplifier includes an input terminal into which a radio frequency (RF) signal received by an antenna is input, an output terminal from which an amplified RF signal is output, at least one gain control part connected in parallel with loads of the output terminal to adjust the gain of the amplified RF signal, and at least one load tuning part that resonates with loads of the output terminal to adjust the resonance frequency of the load impedance. The method includes amplifying the input RF signal and outputting the amplified RF signal to an output terminal, where a gain of the amplified RF signal is adjusted by switching operations of at least one switching device connected in parallel with a load of the output terminal.

摘要翻译： 提供宽带低噪声放大器和放大方法。 宽带低噪声放大器包括输入端子，由天线接收的射频（RF）信号被输入到其中，输出放大的RF信号的输出端子，至少一个增益控制部分与 输出端子来调节放大的RF信号的增益，以及至少一个负载调谐部分，其与输出端子的负载共振以调节负载阻抗的谐振频率。 该方法包括放大输入RF信号并将放大的RF信号输出到输出端，其中放大的RF信号的增益通过与输出端的负载并联连接的至少一个开关器件的开关操作来调节。

公开(公告)号：US08212627B2

公开(公告)日：2012-07-03

申请号：US12711414

申请日：2010-02-24

申请人： Li Yang ,  Hyun-koo Kang ,  Dae-yeon Kim ,  LuoSheng Li

发明人： Li Yang ,  Hyun-koo Kang ,  Dae-yeon Kim ,  LuoSheng Li

IPC分类号： H03B1/00

CPC分类号： H04L27/0014 ,  H03B5/1215 ,  H03B5/1225 ,  H03B5/1231 ,  H03B5/1265 ,  H03B5/1271 ,  H03B5/1278 ,  H03B5/129 ,  H03B5/1293 ,  H03L7/099 ,  H03L7/10 ,  H03L2207/06 ,  H04L2027/0016

摘要： A wideband digitally-controlled oscillator (DCO) is provided. The wideband DCO includes an active element which is driven by a first digital control signal; a single inductor which is connected to the active element in parallel, and comprises fixed inductance; and a plurality of capacitors which are connected to the single inductor in parallel, and vary operating frequency by being selectively turned on or off by a second digital control signal. Accordingly, the wideband DCO capable of operating in a wideband frequency range using a single inductor is provided, and if the wideband DCO is implemented using a single integrated circuit (IC) chip, the size of chip is reduced as the single inductor is used.

摘要翻译： 提供宽带数字控制振荡器（DCO）。 宽带DCO包括由第一数字控制信号驱动的有源元件; 单个电感器并联连接到有源元件，并包括固定电感; 以及并联连接到单个电感器的多个电容器，并且通过由第二数字控制信号选择性地导通或关断来改变工作频率。 因此，提供能够使用单个电感器在宽带频率范围内工作的宽带DCO，并且如果使用单个集成电路（IC）芯片实现宽带DCO，则使用单个电感器来减小芯片的尺寸。

公开(公告)号：US20070018727A1

公开(公告)日：2007-01-25

申请号：US11483069

申请日：2006-07-10

申请人： Jeong-ho Lee ,  Hyun-koo Kang ,  Dae-yeon Kim ,  Jae-young Ryu

发明人： Jeong-ho Lee ,  Hyun-koo Kang ,  Dae-yeon Kim ,  Jae-young Ryu

IPC分类号： H03F3/45

CPC分类号： H03F3/45188 ,  H03F3/19 ,  H03F2200/451 ,  H03F2203/45296 ,  H03F2203/45576 ,  H03F2203/45594 ,  H03F2203/45616 ,  H03F2203/45638 ,  H03F2203/45702 ,  H03F2203/45726 ,  H03G1/0088

摘要： Disclosed is a variable gain amplifier. The variable gain amplifier includes a gain control unit to transmit input differential signals as they are when it operates in a high gain mode, and to transmit the signals by way of predetermined impedances when operating in a low gain mode, and an amplification unit to amplify the input differential signals output from the gain control unit.

摘要翻译： 公开了一种可变增益放大器。 可变增益放大器包括增益控制单元，以在高增益模式下工作时传输输入差分信号，并且以低增益模式操作时通过预定阻抗发送信号，以及放大单元 从增益控制单元输出的输入差分信号。

公开(公告)号：US20060097792A1

公开(公告)日：2006-05-11

申请号：US11172883

申请日：2005-07-05

申请人： Jae-young Ryu ,  Hyun-koo Kang ,  Dae-yeon Kim ,  Jeong-ho Lee

发明人： Jae-young Ryu ,  Hyun-koo Kang ,  Dae-yeon Kim ,  Jeong-ho Lee

IPC分类号： H03F1/22

CPC分类号： H03G1/0088 ,  H03F3/45188 ,  H03G1/0029 ,  H03G3/001

摘要： A variable gain amplifier (VGA) having stable input impedance matching and a stable noise figure in spite of a variation of an amplification gain is provided. In an embodiment of the VGA, a first stage of a cascode amplification unit has a fixed impedance regardless of a change of an amplification gain, and a variable gain determination unit comprised of a plurality of transistors is formed at an upper stage in the cascode amplification unit. Accordingly, a change of an input impedance of the cascode amplification unit due to the change of the amplification gain is minimized. In another embodiment of the VGA, an amplification gain of an amplification unit is controlled by adjusting a voltage applied to the amplification unit by controlling a current to be output by a current supply source, and stable input impedance matching and a stable noise figure are obtained.

摘要翻译： 提供了具有稳定的输入阻抗匹配的可变增益放大器（VGA）和尽管放大增益的变化的稳定的噪声系数。 在VGA的一个实施例中，级联放大单元的第一级具有固定的阻抗，而与放大增益的变化无关，并且在共源共栅放大中的上级形成由多个晶体管组成的可变增益确定单元 单元。 因此，由于放大增益的变化引起的共源共栅放大单元的输入阻抗的变化被最小化。 在VGA的另一实施例中，通过控制由电流源输出的电流来调节施加到放大单元的电压来控制放大单元的放大增益，并获得稳定的输入阻抗匹配和稳定的噪声系数 。

公开(公告)号：US07012573B2

公开(公告)日：2006-03-14

申请号：US11060532

申请日：2005-02-18

申请人： Nikolai Tchistiakov ,  Seong-sin Joo ,  Dae-yeon Kim ,  Weon-kyo Jung ,  Hyun-koo Kang

发明人： Nikolai Tchistiakov ,  Seong-sin Joo ,  Dae-yeon Kim ,  Weon-kyo Jung ,  Hyun-koo Kang

IPC分类号： H01Q9/28

CPC分类号： H01Q9/285 ,  H01Q1/38 ,  H01Q5/50

摘要： A wide band antenna, which has a wide frequency band so that it can be used in a wireless local area network (WLAN) and can be manufactured in a small size at a low cost, is provided. The wide band antenna includes a first antenna unit, a supply cable, a first connector coupler, a second antenna unit, a balun, a stub, and a second connector coupler. A frequency band increases when coupling occurs between the stub and the first antenna unit or the second antenna unit.

摘要翻译： 提供了宽频带天线，其具有宽频带，使得其可以在无线局域网（WLAN）中使用，并且可以以低成本制造成小尺寸。 宽带天线包括第一天线单元，供电电缆，第一连接器耦合器，第二天线单元，平衡 - 不平衡变换器，短线和第二连接器耦合器。 当短截线与第一天线单元或第二天线单元之间发生耦合时，频带增加。

公开(公告)号：US20080186409A1

公开(公告)日：2008-08-07

申请号：US11860618

申请日：2007-09-25

申请人： Hyun-koo KANG ,  Jae-young Ryu ,  Ju-ho Son ,  Dae-yeon Kim

发明人： Hyun-koo KANG ,  Jae-young Ryu ,  Ju-ho Son ,  Dae-yeon Kim

IPC分类号： H04N5/50

CPC分类号： H04B1/28 ,  H04B1/001 ,  H04N5/52 ,  H04N21/426

摘要： A silicon tuner using a sigma delta-analog digital converter (SD-ADC) includes a radio frequency (RF) signal processor to process an RF signal input from an antenna, a mixer to convert the RF signal into an intermediate frequency (IF) signal, an SD-ADC to convert an IF signal into a digital signal, and an IF signal processor to process the converted IF signal. Accordingly, a silicon tuner in which a signal processor and a size are improved is provided.

摘要翻译： 使用Σ-Δ模拟数字转换器（SD-ADC）的硅调谐器包括用于处理从天线输入的RF信号的射频（RF）信号处理器，将RF信号转换成中频（IF）信号 ，将IF信号转换为数字信号的SD-ADC，以及IF信号处理器来处理转换的IF信号。 因此，提供了其中信号处理器和尺寸得到改善的硅调谐器。

公开(公告)号：US07358816B2

公开(公告)日：2008-04-15

申请号：US11172883

申请日：2005-07-05

申请人： Jae-young Ryu ,  Hyun-koo Kang ,  Dae-yeon Kim ,  Jeong-ho Lee

发明人： Jae-young Ryu ,  Hyun-koo Kang ,  Dae-yeon Kim ,  Jeong-ho Lee

IPC分类号： H03G3/10

CPC分类号： H03G1/0088 ,  H03F3/45188 ,  H03G1/0029 ,  H03G3/001

摘要： A variable gain amplifier (VGA) having stable input impedance matching and a stable noise figure in spite of a variation of an amplification gain is provided. In an embodiment of the VGA, a first stage of a cascode amplification unit has a fixed impedance regardless of a change of an amplification gain, and a variable gain determination unit comprised of a plurality of transistors is formed at an upper stage in the cascode amplification unit. Accordingly, a change of an input impedance of the cascode amplification unit due to the change of the amplification gain is minimized. In another embodiment of the VGA, an amplification gain of an amplification unit is controlled by adjusting a voltage applied to the amplification unit by controlling a current to be output by a current supply source, and stable input impedance matching and a stable noise figure are obtained.

摘要翻译： 提供了具有稳定的输入阻抗匹配的可变增益放大器（VGA）和尽管放大增益的变化的稳定的噪声系数。 在VGA的一个实施例中，级联放大单元的第一级具有固定的阻抗，而与放大增益的变化无关，并且在共源共栅放大中的上级形成由多个晶体管组成的可变增益确定单元 单元。 因此，由于放大增益的变化引起的共源共栅放大单元的输入阻抗的变化被最小化。 在VGA的另一实施例中，通过控制由电流源输出的电流来调节施加到放大单元的电压来控制放大单元的放大增益，并获得稳定的输入阻抗匹配和稳定的噪声系数 。

公开(公告)号：US20070096821A1

公开(公告)日：2007-05-03

申请号：US11580898

申请日：2006-10-16

申请人： Jae-young Ryu ,  Hyun-koo Kang ,  Dae-yeon Kim

发明人： Jae-young Ryu ,  Hyun-koo Kang ,  Dae-yeon Kim

IPC分类号： H03F3/16

CPC分类号： H03F3/193 ,  H03F1/223

摘要： An amplifier that achieves impedance matching in a wide frequency band is provided. The wide-band amplifier includes a first n-type metal oxide semiconductor (NMOS) transistor which receives an input signal; a second NMOS transistor which buffers a signal amplified by the first NMOS transistor; a third NMOS transistor which amplifies a signal supplied from a source of the first NMOS transistor; and an output terminal which outputs a signal obtained by combining the signal buffered by the second NMOS transistor with the signal amplified by the third NMOS transistor.

摘要翻译： 提供了在宽频带中实现阻抗匹配的放大器。 宽带放大器包括接收输入信号的第一n型金属氧化物半导体（NMOS）晶体管; 第二NMOS晶体管，缓冲由第一NMOS晶体管放大的信号; 第三NMOS晶体管，放大从第一NMOS晶体管的源极提供的信号; 以及输出端子，其输出通过将由第二NMOS晶体管缓冲的信号组合到由第三NMOS晶体管放大的信号而获得的信号。