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Synthesis and design of suspended substrate stripline filters for digital microwave power amplifiers

机译:数字微波功率放大器悬浮基板带状线滤波器的合成与设计

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摘要

In this paper, a synthesis method for suspended substrate stripline filters for digital microwave power amplifier applications is presented. The synthesis method combines a lumped element and full-wave mixed approach in a very efficient way. In order to achieve high amplifier efficiency the filter must exhibit a high input impedance in the stopband. This has been implemented for the first time by using a capacitively end coupled filter combined with stepped impedance resonators. A third order filter was designed. Simulations show that the final stage drain efficiency of the power amplifier and suppression of out-of-band frequency components can be significantly improved when the new structure is used.
机译:本文提出了一种用于数字微波功率放大器应用的悬浮衬底带状线滤波器的合成方法。合成方法以非常有效的方式将集总元素和全波混合方法结合在一起。为了获得高放大器效率,滤波器必须在阻带中表现出高输入阻抗。这是通过使用电容性端耦合滤波器与阶梯式阻抗谐振器相结合而首次实现的。设计了三阶滤波器。仿真表明,当使用这种新结构时,功率放大器的最后一级漏极效率和带外频率分量的抑制可以得到显着改善。

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