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    • 72. 发明授权
    • Antenna matching device and transceiver having the same
    • 天线匹配装置和收发器具有相同的功能
    • US07840200B2
    • 2010-11-23
    • US11929863
    • 2007-10-30
    • Byung-Su KangJae-Ho JungSeong-Min KimKwang-Chun Lee
    • Byung-Su KangJae-Ho JungSeong-Min KimKwang-Chun Lee
    • H04B1/18
    • H04B1/18
    • The present invention relates to an antenna matching device that varies a frequency bandwidth according to mobile communication services, and to a transceiver having the same. To this end, an exemplary embodiment of the present invention provides a transceiver that varies a frequency band and a bandwidth according to required services in a mobile communication system, the transceiver including an antenna matching controller that generates a prescribed switch control signal according to a service requested by a user, an antenna variable matching unit that variably forms a matching circuit according to the switch control signal to be transmitted from the antenna matching controller and varies the frequency band and the bandwidth, an analog processing unit that processes a signal to be transmitted/received through the antenna variable matching unit, and a wideband antenna that transmits/receives a radio frequency according to the frequency band and the bandwidth set by the antenna variable matching unit. Another exemplary embodiment of the present invention provides an antenna matching device including a resistor that reduces a frequency bandwidth, an inductor that reduces a frequency passing band, a capacitor and a resistor that increase the frequency passing band, and switches that control the operations of the inductor and the capacitor. According to the present invention, unnecessary radiation power of a variable matching unit can be minimized, and maximum transmission power required according to services can be reduced. In addition, system construction costs can be reduced, and a user capacity can be increased.
    • 本发明涉及根据移动通信业务改变频率带宽的天线匹配装置以及具有该天线匹配装置的收发信机。 为此,本发明的示例性实施例提供了一种根据移动通信系统中的所需服务来改变频带和带宽的收发器,该收发器包括:天线匹配控制器,其根据服务产生规定的开关控制信号 用户请求的天线可变匹配单元,根据要从天线匹配控制器发送的切换控制信号可变地形成匹配电路并改变频带和带宽;模拟处理单元,处理要传输的信号 通过天线可变匹配单元接收的宽带天线,以及根据由天线可变匹配单元设定的频带和带宽发射/接收射频的宽带天线。 本发明的另一个示例性实施例提供了一种天线匹配装置,其包括降低频率带宽的电阻器,减小频率通过的电感器,增加频率通过频带的电容器和电阻器,以及控制 电感和电容。 根据本发明,可以使可变匹配单元的不必要的辐射功率最小化,并且可以减少根据服务所需的最大发射功率。 此外,可以降低系统构造成本,能够提高用户容量。
    • 77. 发明申请
    • APPARATUS FOR RECEIVING MULTI-BAND SIGNALS OF MULTIPLE MODES AND METHOD THEREOF
    • 用于接收多模式多带信号的装置及其方法
    • US20080112519A1
    • 2008-05-15
    • US11876884
    • 2007-10-23
    • Jae-Ho JUNGKwang-Chun LEE
    • Jae-Ho JUNGKwang-Chun LEE
    • H04B1/10
    • H04B1/30H04B1/0032H04B1/0035H04B1/0039H04B1/0057H04B1/1027H04B1/18
    • Provided are an apparatus for receiving multi-band signals of multiple modes and a method thereof. The apparatus includes a radio frequency (RF) pre-processing unit for receiving and pre-processing a RF input; a low noise amplifier (LNA) coupled to the RF pre-processing unit; an in-phase/quadrature-phase (IQ) frequency down-converter coupled to the LNA; a low pass filter (LPF) coupled to the IQ frequency down-converter; an analog-to-digital converter (ADC) coupled to the LPF; a complex frequency down-convertor for changing a digital local oscillation frequency based on a variation of center frequency of multi-mode baseband IQ signals converted in the ADC and converting multi-mode baseband IQ signals into baseband IQ signals of each mode; a variable digital filter for low-pass filtering the baseband IQ signals of each mode based on digital filter coefficients for filtering through a predetermined bandwidth; and a baseband signal processor for demodulating the baseband IQ signals of each mode.
    • 提供了一种用于接收多种模式的多频带信号的装置及其方法。 该装置包括用于接收和预处理RF输入的射频(RF)预处理单元; 耦合到所述RF预处理单元的低噪声放大器(LNA); 耦合到LNA的同相/正交相位(IQ)频率下变频器; 耦合到IQ频率下变频器的低通滤波器(LPF); 耦合到所述LPF的模数转换器(ADC); 用于根据在ADC中转换的多模式基带IQ信号的中心频率的变化来改变数字本地振荡频率并将多模式基带IQ信号转换成每种模式的基带IQ信号的复频率下变频器; 可变数字滤波器,用于基于用于通过预定带宽进行滤波的数字滤波器系数对每种模式的基带IQ信号进行低通滤波; 以及用于解调各模式的基带IQ信号的基带信号处理器。