公开(公告)号：US20060181475A1

公开(公告)日：2006-08-17

申请号：US11354923

申请日：2006-02-16

Applicant: Do-hoon Kwon ,  Yong-jin Kim ,  Seong-soo Lee

Inventor： Do-hoon Kwon ,  Yong-jin Kim ,  Seong-soo Lee

IPC: H01Q9/16

CPC classification number: H01Q9/26 ,  H01Q5/364 ,  H01Q5/50 ,  H01Q7/00

Abstract: An ultra wide band (UWB) antenna with a unidirectional radiation pattern, including: a power feeder including a connecting point at one end and a feeding point at the other end; and a radiator including a dipole part, connected with the feeding point on the basis of the feeding point, and a loop part, whose both ends are connected with both ends of the dipole part respectively to be closed-loop-shaped. Accordingly, a UWB antenna with a unidirectional radiation pattern which mainly performs radiation perpendicular to an antenna plane can be provided.

公开(公告)号：US20060181356A1

公开(公告)日：2006-08-17

申请号：US11348229

申请日：2006-02-07

Applicant: Jin-soo Park ,  Chan-young Jeong ,  Chang-sik Yoo ,  Seong-soo Lee ,  Heung-bae Lee

Inventor： Jin-soo Park ,  Chan-young Jeong ,  Chang-sik Yoo ,  Seong-soo Lee ,  Heung-bae Lee

IPC: H03B27/00

CPC classification number: H03B27/00 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B2200/0078

Abstract: A quadrature voltage controlled oscillator having low phase noise and excellent output swing characteristics includes a first voltage controlled oscillator for outputting a positive in-phase output signal and a negative in-phase output signal; a second voltage controlled oscillator for outputting a positive quadrature-phase output signal and a negative quadrature-phase output signal, the second voltage controlled oscillator having a symmetrical structure with the first voltage controlled oscillator and constituting a feedback loop together with the first voltage controlled oscillator; a first constant current source for supplying constant current to the first voltage controlled oscillator in response to the output signals; and a second constant current source for supplying constant current to the second voltage controlled oscillator in response to the output signals.

Abstract translation: 具有低相位噪声和优异输出摆幅特性的正交压控振荡器包括用于输出正同相输出信号和负同相输出信号的第一压控振荡器; 用于输出正正交相输出信号和负正交相输出信号的第二压控振荡器，所述第二压控振荡器与所述第一压控振荡器具有对称结构，并与所述第一压控振荡器一起构成反馈回路 ; 用于响应于所述输出信号向所述第一压控振荡器提供恒定电流的第一恒流源; 以及用于响应于输出信号向第二压控振荡器提供恒定电流的第二恒流源。

公开(公告)号：US20060170512A1

公开(公告)日：2006-08-03

申请号：US11288212

申请日：2005-11-29

Applicant: Sang-yoon Jeon ,  Heung-bae Lee ,  Seong-soo Lee ,  Jinup Lim ,  Joongho Choi

Inventor： Sang-yoon Jeon ,  Heung-bae Lee ,  Seong-soo Lee ,  Jinup Lim ,  Joongho Choi

IPC: H03B5/12

CPC classification number: H03B5/1228 ,  H03B5/1209 ,  H03B5/1215 ,  H03B5/124

Abstract: Disclosed is a dual-band voltage-controlled oscillator using bias switching and output-buffer multiplexing. The dual-band voltage-controlled oscillator includes a power supply unit for supplying a source voltage; plural voltage-controlled oscillation units for outputting different oscillation frequencies according to controls of a certain tuning voltage; plural bias units for generating driving voltages for driving the voltage-controlled oscillation units and supplying the driving voltages to the voltage-controlled oscillation units; and plural buffers for selectively outputting oscillation frequencies of the plural voltage-controlled oscillation units. The present invention implements the dual-band voltage-controlled oscillator through bias switching and output-buffer multiplexing, which brings an advantage of elimination of interference between output frequencies to enhance phase noise characteristics.

Abstract translation: 公开了一种使用偏置开关和输出缓冲器复用的双频带压控振荡器。 双频带压控振荡器包括用于提供源电压的电源单元; 多个电压控制振荡单元，用于根据某个调谐电压的控制输出不同的振荡频率; 多个偏压单元，用于产生用于驱动压控振荡单元的驱动电压并将驱动电压提供给压控振荡单元; 以及用于选择性地输出多个压控振荡单元的振荡频率的多个缓冲器。 本发明通过偏置开关和输出缓冲多路复用来实现双频压控振荡器，其具有消除输出频率之间的干扰以增强相位噪声特性的优点。

公开(公告)号：US20060158383A1

公开(公告)日：2006-07-20

申请号：US11322351

申请日：2006-01-03

Applicant: Do-hoon Kwon ,  Yong-jin Kim ,  Seong-soo Lee

Inventor： Do-hoon Kwon ,  Yong-jin Kim ,  Seong-soo Lee

IPC: H01Q9/28

CPC classification number: H01Q9/28 ,  H01Q9/285 ,  H01Q9/40

Abstract: A Ultra WideBand (UWB) substrate type dipole antenna is provided which has a stable radiation pattern. The UWB substrate type dipole antenna includes a dielectric substrate, a first radiator formed on a side of the dielectric substrate, a signal line transmitting an energy from a coaxial cable to the first radiator, and a plurality of second radiators formed at a predetermined distance from the first radiator and the signal line, and respectively having therein a plurality of slits of a predetermined configuration. Because there is no leakage of electric current to an outer part of an external conductor of the coaxial cable, even when the connection of the connector and the coaxial cable to the antenna, distortion of the radiation pattern of the antenna is prevented. As a result, the same radiation pattern and the direction of maximum radiation may be obtained before and after connection with the connector and the coaxial cable.

Abstract translation: 提供了具有稳定的辐射图案的超宽带（UWB）基板型偶极天线。 UWB基板型偶极天线包括电介质基板，形成在电介质基板一侧的第一辐射体，将同轴电缆的能量传输到第一散热器的信号线，以及形成在预定距离处的多个第二散热器 第一辐射器和信号线，并且分别具有预定构造的多个狭缝。 由于没有电流泄漏到同轴电缆的外部导体的外部部分，所以即使连接器和同轴电缆与天线的连接，也能够防止天线的辐射图形的失真。 结果，可以在与连接器和同轴电缆连接之前和之后获得相同的辐射图案和最大辐射的方向。

公开(公告)号：US07050013B2

公开(公告)日：2006-05-23

申请号：US11023723

申请日：2004-12-28

Applicant: Yong-Jin Kim ,  Do-Hoon Kwon ,  Seong-Soo Lee

Inventor： Yong-Jin Kim ,  Do-Hoon Kwon ,  Seong-Soo Lee

IPC: H01Q13/10

CPC classification number: H01Q13/106 ,  H01Q13/10

Abstract: A planar antenna manufactured by patterning a substrate consisting of a dielectric layer, and first and second conductive layers applied, respectively, to both opposite surfaces of the dielectric layer. A first slot is formed in the first conductive layer for radiating electric waves. A second slot is formed in the first conductive layer for intercepting a particular frequency of the electric waves radiated by the first slot. A power supply portion is formed with the first conductive layer for supplying electric current to the first slot. A radiating element formed with the second conductive layer, which is excited by the electric waves radiated by the first slot, and radiates the electric waves.

Abstract translation: 通过将由电介质层构成的衬底图案化并分别施加到电介质层的两个相对表面的第一和第二导电层制造的平面天线。 在用于辐射电波的第一导电层中形成第一槽。 在第一导电层中形成第二槽，用于截取由第一槽辐射的电波的特定频率。 电源部形成有用于向第一槽供给电流的第一导电层。 形成有由第一槽辐射的电波激励的第二导电层并辐射电波的辐射元件。

公开(公告)号：US06983132B2

公开(公告)日：2006-01-03

申请号：US10616043

申请日：2003-07-10

Applicant: Sang-hyun Woo ,  Seong-soo Lee ,  Jong-ae Park

Inventor： Sang-hyun Woo ,  Seong-soo Lee ,  Jong-ae Park

IPC: H04B1/02 ,  H04B1/04

CPC classification number: H03D7/165 ,  H04B1/406

Abstract: A multi-band radio frequency (RF) receiving method in a mobile communication system having a reduced size and cost includes receiving RF wave signals for four or more non-overlapping bands, primarily filtering a first wide band including adjacent first and second bands and a second wide band including adjacent third and fourth bands from the received RF wave signals, low-noise amplifying the RF wave signals of the first and second wide bands, respectively, secondarily filtering a third wide band including adjacent second and third bands and a fourth wide band including first and fourth bands from the low-noise amplified RF wave signals of the first and second wide bands, generating two band RF wave signals to be simultaneously received, and frequency-down converting the two band RF wave signals generated in the secondary filtering step into two band intermediate frequency wave signals by means of first and second oscillation frequencies.

Abstract translation: 具有减小的尺寸和成本的移动通信系统中的多频带射频（RF）接收方法包括接收四个或更多个非重叠频带的RF波信号，主要滤波包括相邻的第一和第二频带的第一宽带，以及 第二宽带，包括来自接收的RF波信号的相邻的第三和第四频带，分别对第一和第二宽带的RF波信号进行低噪声放大，二次滤波包括相邻的第二和第三频带的第三宽频带和第四宽 包括来自第一和第二宽带的低噪声放大RF波信号的第一和第四频带，产生要同时接收的两个频带RF波信号，以及对在二次滤波中产生的两个频带RF波信号进行降频转换 通过第一和第二振荡频率进入双频带中频信号。

公开(公告)号：US20050282510A1

公开(公告)日：2005-12-22

申请号：US11147206

申请日：2005-06-08

Applicant: Hee-mun Bang ,  Ick-jin Kwon ,  Kwy-ro Lee ,  Seong-soo Lee ,  Heung-bae Lee

Inventor： Hee-mun Bang ,  Ick-jin Kwon ,  Kwy-ro Lee ,  Seong-soo Lee ,  Heung-bae Lee

IPC: H01Q11/12 ,  H03D7/14 ,  H04B1/18

CPC classification number: H03D7/1441 ,  H03D7/145 ,  H03D7/1458 ,  H03D7/1491 ,  H03D2200/0033 ,  H03D2200/0047 ,  H03D2200/0084

Abstract: A linear mixer circuit with a current amplifier has an excellent linearity by using RF open-load and an improved current amplifier. Therefore, a voltage-current converting stage and a current-voltage converting stage in a conventional mixer circuit can be omitted. Further, by using the RF open-load and the current amplifier together, a current type input signal can be transmitted as it is, and non-linearity due to the voltage-current converting stage and the current-voltage converting stage can be prevented. Furthermore, bias current of the amplifying stage and the switching stage can be separated by using the RF open-load, so that an image frequency can be filtered by the RF open-load.

Abstract translation: 具有电流放大器的线性混频器电路通过使用RF开路负载和改进的电流放大器具有优异的线性度。 因此，可以省略常规混频器电路中的电压 - 电流转换级和电流 - 电压转换级。 此外，通过一起使用RF开路负载和电流放大器，可以直接发送电流型输入信号，并且可以防止由于电压 - 电流转换级和电流 - 电压转换级引起的非线性。 此外，可以通过使用RF开路负载来分离放大级和开关级的偏置电流，使得可以通过RF开路负载来滤除图像频率。

公开(公告)号：US20050184828A1

公开(公告)日：2005-08-25

申请号：US11062600

申请日：2005-02-22

Applicant: Mi-hyun Son ,  Seong-soo Lee ,  Kwy-ro Lee ,  Min-kyung Lee ,  Ick-jin Kwon

Inventor： Mi-hyun Son ,  Seong-soo Lee ,  Kwy-ro Lee ,  Min-kyung Lee ,  Ick-jin Kwon

IPC: H01P1/20 ,  H03H7/01 ,  H03H7/12

CPC classification number: H03H7/0161 ,  H03H7/0115 ,  H03H7/175 ,  H03H7/1758 ,  H03H2210/012 ,  H03H2210/015 ,  H03H2210/025 ,  H03J2200/10

Abstract: A tunable wideband bandpass filter that can digitally vary the center frequency and bandwidth of a signal to be filtered, and includes a plurality of switched-capacitor banks for varying capacitance and converting the center frequency and bandwidth into a digital signal, and a plurality of inductors provided for inductance to generate the center frequency, the plurality of switched-capacitor banks that may be integrated into a signal chip.

Abstract translation: 一种可以数字地改变要滤波的信号的中心频率和带宽的可调宽带带通滤波器，并且包括用于改变电容并将中心频率和带宽转换为数字信号的多个开关电容器组，以及多个电感器 提供用于产生中心频率的电感，可以集成到信号芯片中的多个开关电容器组。

公开(公告)号：US20050146471A1

公开(公告)日：2005-07-07

申请号：US11006703

申请日：2004-12-08

Applicant: Do-hoon Kwon ,  Seong-soo Lee

Inventor： Do-hoon Kwon ,  Seong-soo Lee

IPC: H01Q1/38 ,  H01Q9/28 ,  H01Q9/40 ,  H01Q1/00

CPC classification number: H01Q1/38 ,  H01Q9/28 ,  H01Q9/40

Abstract: An ultra-wideband antenna having an isotropic radiation pattern includes a support plate, a feed line on the support plate, a radiating element connected to the feed line to transmit and receive signals, and a ground plate spaced apart from the feed line and attached to the support plate. The radiating element has at least two intersecting conductive plates.

Abstract translation: 具有各向同性辐射图案的超宽带天线包括支撑板，支撑板上的馈电线，连接到馈线以发射和接收信号的辐射元件，以及与馈线间隔开并连接到 支撑板。 辐射元件具有至少两个相交的导电板。

公开(公告)号：US06833818B2

公开(公告)日：2004-12-21

申请号：US10633664

申请日：2003-08-05

Applicant: Young-eil Kim ,  Jae-yul Lee ,  Seong-soo Lee

Inventor： Young-eil Kim ,  Jae-yul Lee ,  Seong-soo Lee

IPC: H01Q124

CPC classification number: H01Q1/2258 ,  G06F1/1616 ,  G06F1/1677 ,  H01Q1/22 ,  H01Q1/2266 ,  H01Q3/24

Abstract: An isotropic antenna system includes a first antenna for transmitting/receiving electric waves when a cover member installed to be capable of being open or closed with respect to a main body is open, a second antenna for transmitting/receiving electric waves when the cover member is closed, and a switching portion for selectively switching at least one of the first and second antennas to a predetermined RF circuit module according to the opening or closing of the cover member.