会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明申请
    • DIRECT CONVERSION RECEIVER AND METHOD FOR CORRECTING PHASE IMBALANCE THEREIN
    • 直接转换接收器和校正相位不平衡的方法
    • US20090116586A1
    • 2009-05-07
    • US11933579
    • 2007-11-01
    • Bernard ArambepolaNick Cowley
    • Bernard ArambepolaNick Cowley
    • H04B1/10H04L27/22
    • H04L27/3863H03D3/009H04B1/30H04L2027/0024
    • A direct conversion receiver and a method for correcting phase imbalance therein is disclosed. An input signal is applied to an in-phase channel and a quadrature channel of the receiver. The input signal is processed by the direct conversion receiver to obtain an in-phase zero intermediate frequency (IF) signal in the in-phase channel and a quadrature zero-IF signal in the quadrature channel. The in-phase zero-IF signal and the quadrature zero-IF signal are filtered to obtain a fixed band signal. A phase imbalance correction value is obtained for the fixed-band quadrature zero-IF signal as a function of the frequency of the fixed-band in-phase zero-IF signal and the fixed-band quadrature zero-IF signal. The in-phase zero-IF signal and the quadrature zero-IF signal are sampled and the phase imbalance correction value is applied using an interpolation to the sampled quadrature zero-IF signal or to the sampled in-phase zero-IF signal to correct the phase imbalance in the direct conversion receiver.
    • 公开了一种用于校正相位不平衡的直接转换接收机和方法。 输入信号被施加到接收机的同相信道和正交信道。 输入信号由直接转换接收机处理,以获得同相信道中的同相零中频(IF)信号和正交信道中的正交零中频信号。 对同相零中频信号和正交零中频信号进行滤波以获得固定频带信号。 作为固定频带同相零中频信号和固定频带正交零中频信号的频率的函数,针对固定频带正交零中频信号获得相位不平衡校正值。 对同相零中频信号和正交零中频信号进行采样,并使用插值对采样的正交零中频信号或采样同相零中频信号施加相位不平衡校正值,以校正 直接转换接收机的相位不平衡。
    • 10. 发明申请
    • Radio signal analysis
    • 无线电信号分析
    • US20080171517A1
    • 2008-07-17
    • US11648849
    • 2006-12-29
    • Isaac AliDavid Albert SawyerNick Cowley
    • Isaac AliDavid Albert SawyerNick Cowley
    • G01S7/40H04B17/00
    • H04B17/21H04B17/0085H04B17/29
    • In some embodiments, a radio transmitter assembly comprises a test signal generator module to generate a first instance of a test signal, the test signal comprising a code, a test signal receiver module which receives the code, a signal combiner to combine the first instance of the test signal with a real signal to create a combined signal, a radio signal generator to generate a radio signal from the combined signal, a signal separator to separate a second instance of the test signal from the radio signal, and comparator logic in the test signal receiver module to compare the code with a code embedded in the second instance of the test signal in the test signal receiver module.
    • 在一些实施例中,无线电发射器组件包括测试信号发生器模块以产生测试信号的第一实例,测试信号包括代码,接收代码的测试信号接收器模块,组合信号的第一实例 具有实信号的测试信号以产生组合信号,无线电信号发生器从组合信号产生无线电信号,信号分离器将测试信号的第二个实例与无线电信号分开,以及测试中的比较器逻辑 信号接收器模块,用于将代码与嵌入在测试信号接收器模块中的测试信号的第二实例中的代码进行比较。