Analyzing the basic theory and development of PLL, and studying the design theory and impedance match problem of experimental circuit board.

分析了锁相环的基本原理和实现，并对射频电路设计理论和阻抗匹配问题进行了探究。

youdao

For maximum exceed noise ratio generated, circuit structure to match the equivalent circuit diagram of the solid-state noise diode in avalanche breakdown state has been designed.

根据固态噪声二极管在雪崩击穿状态的等效电路，设计出与之匹配的电路结构，以实现超噪比的最大输出。

youdao

Based on the analysis of the typical RLC circuit, the advisable match technique of the magnetizing circuit is advanced.

本文从典型的RLC电路分析出发，提出充磁回路的合理匹配技术。

youdao

"The significant investment will ensure Old Trafford regains its place on the Test match circuit, " said Lancashire chief executive Jim Cumbes.

BBC: Lancs plan Old Trafford upgrade

Sharapova has only recently returned to the circuit after an injury layoff, but gained valuable match practice for the second grand slam of the season which starts in Paris on Sunday.

CNN: Sharapova warms up for Roland Garros with title win