本文選題：預失真技術　切入點：氮化鎵功率放大器　出處：《南京理工大學》2017年碩士論文

【摘要】：毫米波技術隨著現(xiàn)代通信技術的迅猛發(fā)展得到越來越廣泛的應用,尤其是在衛(wèi)星通信,制導、導航這些行業(yè)都有非常重要的研究價值。毫米波功率放大器在毫米波通信系統(tǒng)中有著不可替代的地位,其性能的好壞直接影響整個系統(tǒng)的指標。當功率放大器的功率逐漸趨于飽和時,線性度會產生急劇的惡化,產生嚴重的非線性失真,這會對整個通信系統(tǒng)的信號傳輸?shù)馁|量造成嚴重的影響。本文所做的工作正是針對這一點,對毫米波功率放大器的線性化技術進行深入的研究,以模擬預失真技術作為主要研究對象,開展了以下的一系列工作:以肖特基二極管和傳統(tǒng)的反射式預失真器為基礎,對其無源部分進行一系列優(yōu)化,仿真了一款適用于毫米波頻段功率放大器的新型預失真線性化器,該預失真器能夠在30GHz處產生最大13.5dB的增益幅度擴張和最大80度的相位擴張。在矢量疊加原理的基礎上,研制了兩款兩路式預失真器:兩路式串聯(lián)預失真器和兩路式串并聯(lián)預失真器。其中串并聯(lián)預失真器能夠在29.5GHz-30.3GHz頻段內,在輸出功率1dB壓縮點回退3dB處能夠對毫米波功率放大器的三階交調改善9dB以上,而兩路式串聯(lián)預失真器能夠在29.5GHz-30.3GHz頻段內,在輸出功率1dB壓縮點回退3dB處能夠對毫米波功率放大器的三階交調改善10dB以上。本文針對功放所提出的兩款預失真方案,對毫米波通信系統(tǒng)的進一步發(fā)展具有重要意義。
[Abstract]:With the rapid development of modern communication technology, millimeter-wave technology has been more and more widely used, especially in satellite communication, guidance, The navigation industry has very important research value. The millimeter wave power amplifier has the irreplaceable position in the millimeter wave communication system, When the power of the power amplifier tends to saturation, the linearity will deteriorate sharply and produce serious nonlinear distortion. This will have a serious impact on the quality of signal transmission in the whole communication system. The work done in this paper is aimed at this point, the linearization technology of millimeter wave power amplifier is deeply studied. Taking analog predistortion technology as the main research object, a series of works are carried out as follows: based on Schottky diode and traditional reflective predistortor, a series of optimization is carried out on its passive part. A novel predistortion linearizer suitable for millimeter-wave power amplifier is simulated. The predistorter can generate the maximum gain amplitude expansion of 13.5dB and the maximum 80 degree phase expansion at 30GHz. Based on the principle of vector superposition, a new type of predistortion linearizer is developed. Two two-channel predistortors are developed: two-channel series predistortors and two-channel series-parallel predistortors, in which the series-parallel predistortors can be used in the 29.5GHz-30.3GHz band. The third-order intermodulation of the millimeter-wave power amplifier can be improved above 9dB at the point of output power 1dB compression point back 3dB, while the two-channel series predistorter can be used in the 29.5GHz-30.3GHz band. The third-order intermodulation of millimeter-wave power amplifier can be improved above 10dB at the point of output 1dB compression point back 3dB. The two predistortion schemes proposed in this paper are of great significance for the further development of millimeter-wave communication system.
【學位授予單位】：南京理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TN722.75

【參考文獻】

相關期刊論文 前1條

1 艾渤;楊知行;潘長勇;張濤濤;陽輝;王勇;陸震;;高功率放大器線性化技術研究[J];微波學報;2007年01期

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本文編號：1685622