數位微波通信發射器線性化技術

Abstract

為了有效的使用頻帶，現今的無線通 信系統使用複雜的數位調變訊號，而這些 數位訊號使發射器的線性度要求提高，以 達成低失真及高可靠度的通信。 我們在這一年的計畫中，首次將前 置失真器與可變增益放大器相結合，提 昇發射器線性化技術的整合度，發表於 IEEE IMS 國際會議。另外，我們也是首 次成功地研製出毫米波頻段調變器及其 線性化技術，也發表於APMC 國際會議 及IEEE MTT 論文中。

To increase the spectral efficiency, the broadband wireless communications need complex digital modulation techniques and also high-linearity RF transmitters to lower the distortions and increase reliabilities in broadband applications. For this one year research project, for the first time, we have successfully combined the pre-distorter, and the variable-gain amplifier into one circuit, which increases the integration level of linearization techniques in transmitter designs, that also published in IEEE IMS. On the other hand, we have successfully developed millimeter-wave IQ modulators with linearization techniques, which have been published in APMC and IEEE transaction of MTT.