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    • 6. 发明申请
    • Programmable transmitter architecture for non-constant and constant envelope modulation
    • 可编程发射机架构,用于非恒定和恒定包络调制
    • US20070293163A1
    • 2007-12-20
    • US11454134
    • 2006-06-15
    • John KilpatrickJoel DawsonJose BohorquezJeff Venuti
    • John KilpatrickJoel DawsonJose BohorquezJeff Venuti
    • H04B1/40
    • H04B1/0483H04B1/406H04L27/0008
    • Transmitter architectures designed to accommodate both constant and non-constant of envelope modulation schemes and capable of providing local oscillator carrier frequencies within any one of numerous desired frequency bands, thus allowing compliance with many different communication standards. One example of a programmable frequency synthesizer includes a plurality of transmitter components and a microcontroller coupled to the frequency synthesizer and to the plurality of transmitter components. The microcontroller is adapted to provide a frequency control signal to the frequency synthesizer to control a frequency of the local oscillator carrier frequency. In addition, the microcontroller is also adapted to provide digital control signals to at least some of the plurality of transmitter components to turn on and off different ones of the plurality of transmitter components based on an operating mode of the transmitter, such that the transmitter can accommodate both constant envelope modulation and non-constant envelope modulation schemes.
    • 发射机体系结构旨在适应常数和非常数的包络调制方案,并且能够在许多期望的频带内提供本地振荡器载波频率,从而允许符合许多不同的通信标准。 可编程频率合成器的一个示例包括多个发射器部件和耦合到频率合成器和多个发射器部件的微控制器。 微控制器适于向频率合成器提供频率控制信号以控制本地振荡器载波频率的频率。 此外,微控制器还适于基于发射器的操作模式向多个发射器部件中的至少一些提供数字控制信号,以接通和关闭多个发射器部件中的不同发射器部件,使得发射器 适应恒定包络调制和非恒定包络调制方案。