• 1. PLL frequency synthesis: 锁相环频率合成

• 1.In this paper the principle and design of a microcomputer-controlled PLL frequency synthesis digit tuning system is discussed.
  本文叙述了一个用微机控制的锁相环频率合成数字调谐系统的原理和设计。
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• 2.Some technique problems in fast frequency hopping synthesis are solved by making use of a programmable time division-fractional division PLL.
  该合成器采用程控时分复用小数分频锁相技术，解决了快速跳频频率合成中的诸多固难。
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• 3.DDS hybrid PLL can take good advantage of both their merit, have become an important area of frequency synthesis.
  PLL混合频率合成技术能综合两者的优点，已成为现今频率合成领域的重要研究方向。
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