依据阻抗匹配原理与电磁波传播规律，设计了具有阻抗渐变结构的双层吸波材料。
According to the resistance matching principle and electromagnetic spreading regulation, double-layer absorbing materials with resistance gradual changing structure were designed.
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。
Analyzing the basic theory and development of PLL, and studying the design theory and impedance match problem of experimental circuit board.
介绍了阻抗匹配设计原理。
介绍了采用铁氧体薄膜的微带环行器的工作原理、结构以及环行器阻抗匹配网络。
The basic operation principle, structural characteristics and microstrip impedance-matching network of ferrite film circulator are introduced.
需经历调谐、阻抗匹配等步骤。阐述了鸟笼式谐振器正交工作原理和开鸟笼正交谐振器的可行性，给出了正交相位阵列方案。
The possibility of constructing open quadrature birdcage as soft coil and quadrature phased array as lumber coil is presented.
需经历调谐、阻抗匹配等步骤。阐述了鸟笼式谐振器正交工作原理和开鸟笼正交谐振器的可行性，给出了正交相位阵列方案。
The possibility of constructing open quadrature birdcage as soft coil and quadrature phased array as lumber coil is presented.
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