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    • 1. 发明专利
    • Carrier suppression type modulator with encoded modulation signal
    • 带编码调制信号的载波抑制型调制器
    • JP2012100305A
    • 2012-05-24
    • JP2011276721
    • 2011-12-19
    • Orbital Sciences Corpオービタル サイエンセズ コーポレーション
    • LEONARD A ATKINSON
    • H04L27/20H04L27/36H03C1/00H03C1/54H03D7/16H04K1/00H04L27/00
    • H03D7/163
    • PROBLEM TO BE SOLVED: To provide a modulator in which a carrier is suppressed without the need for accurate adjustment.SOLUTION: A carrier suppressed information signal modulator employs a plurality of serially coupled carrier suppression modulators. Each of the serially coupled modulators has a carrier input, a modulating signal input and a modulated carrier output. A carrier is applied to the carrier input of the first modulator and the suppressed modulated carrier output of each modulator is coupled to the carrier input of the succeeding modulator. An encoder generates modulating signals to be applied to the modulating signal inputs of the serially coupled modulators in response to the information signal. The modulating signals applied to each of the serially coupled modulators modifies the modulated carrier output received at its carrier input to produce a suppressed modulated carrier at the output of the last of the serially coupled modulators that corresponds to the information signal.
    • 要解决的问题:提供其中抑制载体而不需要精确调节的调制器。 解决方案:载波抑制信息信号调制器采用多个串联耦合载波抑制调制器。 每个串联耦合调制器具有载波输入,调制信号输入和调制载波输出。 载波被施加到第一调制器的载波输入,并且每个调制器的抑制调制载波输出耦合到后继调制器的载波输入。 编码器响应于信息信号产生要施加到串行耦合调制器的调制信号输入的调制信号。 施加到每个串行耦合调制器的调制信号修改在其载波输入处接收的调制载波输出,以在对应于信息信号的最后一个串行耦合调制器的输出处产生抑制的调制载波。 版权所有(C)2012,JPO&INPIT