以數學合成之1伏0.9至7 GHz寬頻低雜訊放大器設計

Abstract

於無線通訊技術快速發展的今日，在單隻手機內整合所有需要的通信標準之系統，已成為越來越急迫的需求。本篇論文提出以單一寬頻低雜訊放大器之方式，取代傳統上以多顆窄頻低雜訊放大器滿足各個不同標準之需求，而達到縮小晶片面積、減低功率消耗之目的。不同於以往寬頻放大器之設計，本篇論文使用一有系統之方式，即利用數學敘述合成匹配網路，完成寬頻低雜訊放大器之設計。而此數學敘述已被寫成MATLAB程式，使得未來設計寬頻放大器時，可節省許多時間以及精力。最終以此匹配網路合成之方式，設計並實作了一顆0.9~7GHz之寬頻低雜訊放大器。

Nowadays, with the rapid development of wireless communication technique, the need for a system which integrates all the required communication standards in one mobile phone becomes more and more urgent. This thesis proposes a method that using one broadband low-noise amplifier to replace several narrowband low-noise amplifiers for different standards which is traditionally used. It can not only save chip area but also reduce power consumption. Different from the previous design of broadband amplifiers, this thesis adopts a more systematic method, that is, matching network synthesis by mathematical description, to complete the design of a broadband low-noise amplifier. Moreover, this mathematical description has been written into MATLAB program, which can save more time and energy when designing the broadband amplifiers in the future. Finally, by the way of matching network synthesis, a 0.9 to 7 GHz broadband low-noise amplifier was designed and implemented.