一种简单可靠的高速宽带混频环防错锁方案及工程设计

对混频环设计中的关键技术问题——混频环的捕捉带、高速防错锁电路的设计进行了研究，推导出了基本混频环捕捉带的公式，提出了一种通用、简单可靠的高速宽带混频环防错锁方案，推导出了设计公式，并给出了工程设计实例，通过工程应用验证了结果的正确性。

A Simple and Reliable Scheme for High-speed Wideband Lock Protection Circuit in Mixing PLL and its Engineering Design

The research on capture band and high-speed lock protection circuit design for mixing PLL, the key technical problem in mixing PLL design, is carried out. The capture band computing formula for basic mixing PLL is derived. A universal, simple and reliable scheme for high-speed lock protection circuit in mixing PLL is presented, the formulas for its design are derived, and the example of its engineering design is provided. The design result is proved correct by engineering applications.