運用0.18 um CMOS 製程研製2.4 GHz可調式雙模態主動濾波器及全積體化頻率合成器

Abstract

本篇論文使用TSMC 0.18μm CMOS 製程設計並實現2.4GHz ISM 頻段的射頻電路，主要可分為兩個主題：第一部份為2.4GHz CMOS可調式雙模態主動濾波器，其主要特點為有傳輸零點可調的特性。第二部分為實現全積體化2.4GHz頻率合成器。 論文第一部份首先會對集總式雙模態帶通濾波器的設計作探討，再利用主動電感實現主動相位移器，以達到傳輸零點可調的目的，最後將濾波器放在高增益的低雜訊放大器後面，達到壓低雜訊的目的與高帶外訊號抑制的效果。 論文第二部份首先對無線通訊頻帶規範做簡單介紹，接著從系統的角度去分析2.4GHz頻率合成器，再來實作頻率合成器使用的多模數除頻器，最後實現並介紹所使用的2.4GHz頻率合成器架構。

This thesis using the TSMC 0.18μm CMOS process design and achieve the 2.4GHz ISM band RF circuits, which can be divided into two parts: The first part is 2.4 GHz Tunable Dual-Mode Active Filter, the main feature is the tunable transmission zeros. The second part is the full Integrated 2.4GHz frequency synthesizer. In first part, we will discuss the design methodology of lumped dual-mode band- pass filter. Using active inductor to achieve the active phase shifter, in order to achieve the purpose of the adjustable transmission zeros. Finally, we implement the RF circuit which is cascaded the high gain LNA and the previous active filter in sequence to suppress the noise and achieve high out of band signal rejection. The second part, we briefly introduce wireless communication frequency spectrum specification , and then from a systems perspective to analyze the 2.4GHz frequency synthesizer. Implement the multi-modulus divider part of frequency synthesizer, and finally finish it.