使用z域的方式來設計微波射頻放大器，由於以往使用Z域設計出來的放大器面積較大，在多方考量下，我們使用多層板的結構實現一個雙通帶之放大器。其操作頻率為2.3到2.7 GHz與5.2到5.9 GHz，理想增益分別為14 dB與11 dB。

In this study, the z domain technique was used to design microwave amplifiers. Using z domain technique in amplifier design is quite innovative and it has the advantage of being programmable. The operating frequencies are 2.3 to 2.7 GHz and 5.2 to 5.9 GHz with gains of 15.5 and 12 dB, respectively. The circuit is implemented by four layers structure.

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