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    • 3. 发明授权
    • Active antenna, base station, method for refreshing amplitudes and phases, and method for processing signals
    • 有源天线,基站,振幅和相位刷新方法以及处理信号的方法
    • US08391377B2
    • 2013-03-05
    • US13026914
    • 2011-02-14
    • Yuanrong ZhuJianjun ChenZhubiao HeJianfeng WuMing XuYi ZhangYuntao ZhuPinghua He
    • Yuanrong ZhuJianjun ChenZhubiao HeJianfeng WuMing XuYi ZhangYuntao ZhuPinghua He
    • H04L27/00
    • H01Q1/246H01Q3/267H01Q3/34H04B7/0617H04B7/0842H04B17/11H04B17/21
    • An active antenna, a base station, a method for refreshing the amplitude and phase, and a signal processing method are disclosed to simplify the structure of a phase shifter and guarantee the reliability of the phase shifter. The active antenna or the base station includes an antenna dipole array, a transceiver array, a digital processing unit (DPU), and a transceiving calibration unit. During signal reception, the transceiver demodulates a radio frequency (RF) signal of the antenna dipole into an IQ analog signal, and outputs the IQ analog signal to the DPU; the DPU converts the demodulated IQ analog signal into an IQ digital signal, and performs digital beam forming (DBF) on the IQ digital signal according to the transceiving calibration unit; during signal transmission, the transceiver modulates the IQ analog signal of the DPU into an RF signal, and outputs the RF signal to the antenna dipole; the DPU converts a signal of a base band unit (BBU) into an IQ digital signal in serial/parallel (S/P) mode, and performs DBF on the IQ digital signal according to the transceiving calibration unit.
    • 公开了有源天线,基站,振幅和相位刷新的方法以及信号处理方法,以简化移相器的结构并保证移相器的可靠性。 有源天线或基站包括天线偶极子阵列,收发器阵列,数字处理单元(DPU)和收发校准单元。 在信号接收期间,收发器将天线偶极子的射频(RF)信号解调为IQ模拟信号,并将IQ模拟信号输出到DPU; DPU将解调的IQ模拟信号转换为IQ数字信号,并根据收发校准单元对IQ数字信号进行数字波束形成(DBF); 在信号传输期间,收发器将DPU的IQ模拟信号调制成RF信号,并将RF信号输出到天线偶极子; DPU将基带单元(BBU)的信号以串行/并行(S / P)模式转换为IQ数字信号,并根据收发校准单元对IQ数字信号执行DBF。
    • 9. 发明授权
    • Directional coupler and a receiving or transmitting device
    • 定向耦合器和接收或发送装置
    • US07880560B2
    • 2011-02-01
    • US12505739
    • 2009-07-20
    • Pinghua HeXinlu LiJianjun ChenZhaolu WeiGang Ju
    • Pinghua HeXinlu LiJianjun ChenZhaolu WeiGang Ju
    • H01P5/18H01P5/08
    • H01P5/18H01P5/107
    • A directional coupler and a receiving or transmitting device. The directional coupler includes: a primary signal line composed of a metal rod; and a coupled signal line composed of a microstrip line in a curved shape on a printed circuit board; wherein the medium between the metal rod and the microstrip line is air. Compared with existing directional coupler, the directional coupler of the embodiments of the disclosure has a lower transmitting loss, a large power capacity, and a high directional qualification. The directional coupler is capable of ensuring a higher passive intermodulation qualification. The advantages of the embodiments of the present disclosure are easier assembly, good uniformity of the qualifications, and adaptability for various application environments. The directional coupler of the disclosure ensures different parameter qualifications, and is simple to assemble, so that the low cost is achieved.
    • 定向耦合器和接收或发送装置。 定向耦合器包括:由金属杆构成的主信号线; 以及由印刷电路板上的弯曲形状的微带线组成的耦合信号线; 其中金属棒和微带线之间的介质是空气。 与现有的定向耦合器相比,本发明的实施例的定向耦合器具有较低的发射损耗,较大的功率容量和较高的方向性鉴定。 定向耦合器能够确保更高的无源互调质量。 本公开的实施例的优点是更容易组装,资格的良好均匀性以及针对各种应用环境的适应性。 本公开的定向耦合器确保不同的参数资格,并且组装简单,从而实现了低成本。
    • 10. 发明申请
    • Determining Frequency Errors in a Multi-Carrier Receiver
    • 确定多载波接收机中的频率误差
    • US20150358192A1
    • 2015-12-10
    • US14110875
    • 2012-03-14
    • Thomas NilssonJianjun ChenAmit Singh
    • Thomas NilssonJianjun ChenAmit Singh
    • H04L27/26H04B1/10
    • H04L27/2657H04B1/1081H04L25/0222H04L27/0014H04L27/2672H04L27/2675H04L27/2695
    • Individual multipath components of digital data symbols sent from a transmitter on at least two carrier frequencies generated from a common clock signal, are received (401) with individual delays and processed by a receiver unit having at least two fingers. Successive channel estimates are determined (402) from received symbols for each finger and each carrier, and an estimated frequency error is determined (404) for each finger and each carrier. A linear equation system is constructed (405), in which each determined frequency error is expressed as a function of a first variable indicative of frequency drift and a second variable indicative of frequency error caused by Doppler effect. The equation system is solved (406) to provide a solution with estimates of the first and second variables for each finger, and an estimated frequency drift is determined (407) from the solution and utilized (408) as feedback signal for adjusting receiver clock frequency.
    • 在从公共时钟信号产生的至少两个载波频率上从发射机发送的数字数据符号的单个多径分量被接收(401)并具有单独的延迟,并由具有至少两个手指的接收机单元进行处理。 从每个手指和每个载体的接收符号确定连续信道估计(402),并且为每个手指和每个载波确定估计的频率误差(404)。 构造线性方程组(405),其中每个确定的频率误差被表示为指示频率漂移的第一变量的函数,以及指示由多普勒效应引起的频率误差的第二变量。 求解方程系统(406)以提供每个手指的第一和第二变量的估计的解,并且从解中确定估计的频率漂移(407),并将其用作用于调整接收机时钟频率的反馈信号(408) 。