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首页> 外文会议>International Conference on ITS(Intelligent Transport Systems Standardization) Telecommunications Proceedings(ITST2006); 20060621-23; Chengdu(CN) >Analysis of the Double-conversion Scheme Based on Single Local Oscillator
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Analysis of the Double-conversion Scheme Based on Single Local Oscillator

机译：基于单本地振荡器的双转换方案分析

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摘要

For strict requirement, the local oscillator is always a difficult problem when designing the communication system based on the double-conversion scheme. In this paper, a kind of improved double-conversion scheme is introduced in which single local oscillator is needed, and key issues about this double-conversion scheme with single local oscillator are also discussed. The scheme is possessed of the advantages of traditional double-conversion system, but simultaneously decreases the difficulty when realizing the local oscillator. So, it is favorable in system miniaturization and integration. Based on careful analysis of the new scheme and an engineering example, some formula and designing rule of system parameters, such as bandwidth and center frequency of intermediate frequency filter, are proposed. The method discussed in this paper is also applicable in other frequency band.
机译：对于严格的要求，在基于双转换方案设计通信系统时，本地振荡器始终是一个难题。本文介绍了一种需要单本地振荡器的改进型双转换方案，并讨论了这种带有单本地振荡器的双转换方案的关键问题。该方案具有传统双转换系统的优点，但同时降低了实现本地振荡器的难度。因此，有利于系统的小型化和集成化。在对新方案进行认真分析的基础上，结合工程实例，提出了中频滤波器带宽，中心频率等系统参数的公式和设计原则。本文讨论的方法也适用于其他频段。

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