公开(公告)号：US20080268797A1

公开(公告)日：2008-10-30

申请号：US12109720

申请日：2008-04-25

申请人： Cheol-Woo Ahn ,  Kweon Na ,  Kae-Oh Sun

发明人： Cheol-Woo Ahn ,  Kweon Na ,  Kae-Oh Sun

IPC分类号： H04B1/04 ,  G06F3/033

CPC分类号： H01Q3/30 ,  H01Q21/0025 ,  H04B7/0617 ,  Y02D70/444

摘要： An apparatus and a method for beamforming with less heat in a wireless communication system including multiple antennas are provided. The apparatus includes a digital signal processor for processing at least one baseband digital signal, and at least one Radio Frequency (RF) signal processor for converting a respective baseband digital signal of the at least one baseband digital signal into an RF analog signal and for amplifying a power of the RF analog signal for one or more antenna elements constituting a respective antenna of the at least one antenna.

摘要翻译： 提供了一种用于在包括多个天线的无线通信系统中具有较少热量的波束成形的装置和方法。 该装置包括用于处理至少一个基带数字信号的数字信号处理器和至少一个射频（RF）信号处理器，用于将至少一个基带数字信号的相应基带数字信号转换成RF模拟信号，并用于放大 构成所述至少一个天线的相应天线的一个或多个天线元件的RF模拟信号的功率。

公开(公告)号：US5524185A

公开(公告)日：1996-06-04

申请号：US301181

申请日：1994-09-06

申请人： Kweon Na

发明人： Kweon Na

IPC分类号： G06F3/12 ,  H04B1/69 ,  H04J13/16 ,  G06K15/00 ,  H04Q7/00

CPC分类号： G06F3/1293

摘要： A wireless common printer system capable of achieving a print operation in accordance with a priority sequence by, at the side of personal computers, differentially encoding data to be printed by use of pseudo noise codes allocated to the computers like intrinsic identifiers and transmitting the data after spreading it in a direct sequence and, at the side of printer, extracting data from those received from the computers by use of a despread spectrum technique utilizing matched filters having individual intrinsic identifier codes. Since the common printer system is the wireless system eliminating requirements of a separate printer switching unit and a printer cable, there is no limitation on the usable distance in so far as electric power of a certain radio frequency is kept. By virtue of this feature, the common printer system provide an enhanced convenience when it is applied to lap top computers and personal note book computers having a high movability.

摘要翻译： 一种无线通用打印机系统，其能够通过在个人计算机的侧面根据优先顺序来实现打印操作，通过使用分配给诸如内部标识符的计算机的伪噪声代码进行差分编码要打印的数据，并在 以直接顺序进行扩展，并且在打印机的侧面，通过使用具有各自的固有标识符码的匹配滤波器的解扩频谱技术从计算机接收的数据中提取数据。 由于通用打印机系统是消除单独的打印机切换单元和打印机电缆的要求的无线系统，所以在保持某个射频的电力的情况下，对可用距离没有限制。 凭借这一特点，普通打印机系统将其应用于具有高移动性的笔记本电脑和个人笔记本计算机时，提供了增强的便利。

公开(公告)号：US08942653B2

公开(公告)日：2015-01-27

申请号：US12109720

申请日：2008-04-25

申请人： Cheol-Woo Ahn ,  Kweon Na ,  Kae-Oh Sun

发明人： Cheol-Woo Ahn ,  Kweon Na ,  Kae-Oh Sun

IPC分类号： H04B1/04 ,  H01Q3/30 ,  H01Q21/00 ,  H04B7/06

CPC分类号： H01Q3/30 ,  H01Q21/0025 ,  H04B7/0617 ,  Y02D70/444

摘要： An apparatus and a method for beamforming with less heat in a wireless communication system including multiple antennas are provided. The apparatus includes a digital signal processor for processing at least one baseband digital signal, and at least one Radio Frequency (RF) signal processor for converting a respective baseband digital signal of the at least one baseband digital signal into an RF analog signal and for amplifying a power of the RF analog signal for one or more antenna elements constituting a respective antenna of the at least one antenna.

摘要翻译： 提供了一种用于在包括多个天线的无线通信系统中具有较少热量的波束成形的装置和方法。 该装置包括用于处理至少一个基带数字信号的数字信号处理器和至少一个射频（RF）信号处理器，用于将至少一个基带数字信号的相应基带数字信号转换成RF模拟信号，并用于放大 构成所述至少一个天线的相应天线的一个或多个天线元件的RF模拟信号的功率。

公开(公告)号：US20050255812A1

公开(公告)日：2005-11-17

申请号：US11130486

申请日：2005-05-17

申请人： Kweon Na ,  Hyun-Su Yoon ,  Cheol-Woo Ahn ,  Jong-Hyun Lee

发明人： Kweon Na ,  Hyun-Su Yoon ,  Cheol-Woo Ahn ,  Jong-Hyun Lee

IPC分类号： H04B1/44 ,  H04B1/48

CPC分类号： H04B1/48

摘要： A transmitting apparatus in a TDD wireless communication system is provided. In the transmitting apparatus, a circulator transmits a signal received from a power amplifier to an antenna feed line and transmits a signal received from the antenna feed line to a quarter-wave transmission line. The quarter-wave transmission line is installed in a reception path, for reception isolation in a transmission mode. An RF switch shorts the load of the quarter-wave transmission line to the ground or connects the load of the quarter-wave transmission line to an LNA according to a control signal. The LNA low-noise-amplifies a signal received from the RF switch.

摘要翻译： 提供了TDD无线通信系统中的发送装置。 在发送装置中，循环器将从功率放大器接收的信号发送到天线馈送线，并将从天线馈线接收的信号发送到四分之一波长的传输线。 四分之一波长传输线安装在接收路径中，用于传输模式下的接收隔离。 RF开关将四分之一波长传输线的负载缩短到地面，或者根据控制信号将四分之一波长传输线的负载连接到LNA。 LNA低噪声放大从RF开关接收的信号。

公开(公告)号：US5724645A

公开(公告)日：1998-03-03

申请号：US513540

申请日：1995-08-10

申请人： Kweon Na

发明人： Kweon Na

IPC分类号： G01R31/02 ,  H04H40/90 ,  H04H1/00

CPC分类号： H04H40/90

摘要： In a circuit for controlling an RF output voltage level and identifying the continuity of an IFL cable using a low frequency signal, the low frequency signal is transmitted to an outdoor unit after being level-controlled in an indoor unit. The level of an intermediate frequency transmission (IF TX) signal input to a transmit block up-converter (TBU) is controlled using the low frequency signal so that the RF output voltage level output from a solid state power amplifier (SSPA) is finally controlled. The low frequency signal is transmitted back from the outdoor unit to the indoor unit, and the indoor equipment detects the signal, thereby identifying the presence or absence of an abnormal connection of an IFL cable. An EIRP adjustment circuit is simplified without a microcomputer and its pheripheral circuits, by using a low-frequency signal which is not damaged by a communication cable. Also, the attenuation of the IF TX signal due to the communication cable is automatically compensated. Since the presence or absence of the abnormal connection of the IFL cable can be easily identified indoors using a visual signal, it is possible to detect abnormal components quickly at the time of when the problem occurs in the system, thereby saving the time for repairing the malfunction.

摘要翻译： 在用于控制RF输出电压电平并且使用低频信号识别IFL电缆的连续性的电路中，低频信号在室内单元中被电平控制之后被传送到室外单元。 使用低频信号控制输入到发送块上变频器（TBU）的中频发送（IF TX）信号的电平，使得从固态功率放大器（SSPA）输出的RF输出电压电平最终被控制 。 低频信号从室外机返回到室内机，室内机检测信号，从而识别IFL电缆是否存在异常连接。 通过使用未被通信电缆损坏的低频信号，简化了EIRP调整电路，无需微机及其多路电路。 此外，由于通信电缆引起的IF TX信号的衰减被自动补偿。 由于可以使用视觉信号在室内容易地识别IFL电缆的异常连接的存在或不存在，所以可以在系统中发生问题时快速检测异常部件，从而节省了维修时间 故障。

公开(公告)号：US20070002781A1

公开(公告)日：2007-01-04

申请号：US11479838

申请日：2006-06-30

申请人： Hyun-Su Yoon ,  Kweon Na ,  Young-Jin An

发明人： Hyun-Su Yoon ,  Kweon Na ,  Young-Jin An

IPC分类号： H04J3/00

CPC分类号： H04B1/52

摘要： Provided is a TRAS in a TDD wireless communication system. In the TRAS, a circulator transmits a signal received from a PA to an antenna feed line and a signal received from the antenna feed line to a reflector. The reflector fully reflects the signal received from the circulator when a reflection operation is turned on in transmission mode, and transmits the signal received from the circulator to a wireless switch, such as, an RF switch when the reflection operation is turned off in reception mode. The RF switch transmits or blocks the signal received from the reflector to or from an LNA according to the transmission or reception mode.

摘要翻译： 提供了TDD无线通信系统中的TRAS。 在TRAS中，循环器将从PA接收的信号发送到天线馈送线，并将从天线馈线接收的信号发送到反射器。 当在传输模式中反射操作被打开时，反射器完全反映从循环器接收的信号，并且当在接收模式中反射操作被关闭时，将从循环器接收的信号发送到诸如RF开关的无线开关 。 RF开关根据发送或接收模式向LNA发送或阻止从反射器接收的信号。

公开(公告)号：US20060035600A1

公开(公告)日：2006-02-16

申请号：US11191516

申请日：2005-07-28

申请人： Dong-Geun Lee ,  Young-Jin An ,  Kweon Na

发明人： Dong-Geun Lee ,  Young-Jin An ,  Kweon Na

IPC分类号： H04B7/14 ,  H04B1/44

CPC分类号： H04B1/18

摘要： An RF front-end apparatus in a TDD wireless communication system is provided. In the RF front-end apparatus, a detector is provided at a predetermined position in a signal path, and detects a signal propagating in the signal path. A circulator provides a signal received from a power amplifier to an antenna feed line and a signal received from the antenna feed line to a switch. A switch controller generates a control signal based on the signal received from the detector and a switch on/off signal received from a control board. The switch, which is disposed at an input port of an LNA, switches on/off according to the control signal received from the switch controller.

摘要翻译： 提供了TDD无线通信系统中的RF前端装置。 在RF前端装置中，检测器设置在信号路径中的规定位置，检测在信号路径中传播的信号。 循环器将从功率放大器接收的信号提供给天线馈线，以及从天线馈线接收到的信号到开关。 开关控制器基于从检测器接收的信号和从控制板接收的开/关信号产生控制信号。 设置在LNA的输入端口的开关根据从开关控制器接收到的控制信号来接通/断开。