本文關(guān)鍵詞：8mm波段功率合成放大器和波導濾波器的設計　出處：《南京理工大學》2017年碩士論文　論文類型：學位論文

  更多相關(guān)文章： 8mm波段 功率合成 徑向波導 波導 濾波器

【摘要】：隨著現(xiàn)代電子技術(shù)的迅速發(fā)展,雷達、通信系統(tǒng)對發(fā)射機輸出功率的要求越來越高。在8mm波段甚至更高頻段,由于單個固態(tài)器件的輸出功率有限,不能滿足系統(tǒng)對大功率的需求,因此通常采用功率合成技術(shù)來提高系統(tǒng)的輸出功率。論文首先基于徑向波導功率合成技術(shù),研制了 8mm波段四路功率合成放大器;而濾波器作為選頻器件,是毫米波通信系統(tǒng)的重要部件之一,其性能指標直接影響著整個通信系統(tǒng)的運行質(zhì)量。論文結(jié)合項目需求設計了適合于8mm波段的波導濾波器。本文的主要研究內(nèi)容如下:論文的第一部分是對8mm波段功率合成放大器的研究,包括功率合成器無源網(wǎng)絡及有源電路的實現(xiàn)。功率合成無源網(wǎng)絡部分,為了克服功率合成器因幅度和相位不一致帶來的合成效率下降的問題,采用徑向波導作為功率合成網(wǎng)絡的核心單元,整個無源網(wǎng)絡由對稱的矩形波導-同軸波導-徑向波導-矩形波導功率分配/合成器以及背靠背結(jié)構(gòu)的波導-微帶探針過渡結(jié)構(gòu)組成,為了擴展功率分配/合成器的工作帶寬,在同軸探針的底部加入錐形結(jié)構(gòu),以實現(xiàn)同軸波導到徑向波導的平滑過渡。在建模仿真后進行實物加工與測試,所測結(jié)果與理論設計基本一致;功率合成器有源電路部分,在4個背靠背波導-微帶轉(zhuǎn)換器中加載四片AMMC5040,結(jié)合無源網(wǎng)絡結(jié)構(gòu)實現(xiàn)四路功率合成放大輸出。最終的測試結(jié)果顯示,該功率合成器在32～38GHz頻率范圍內(nèi),合成效率均大于70%。論文的第二部分是對8mm波段波導濾波器的研究與設計,采用雙邊電感膜片結(jié)構(gòu),分析對比了幾種常用的濾波器設計方法,采用場與路相結(jié)合的分析方法對該濾波器的尺寸進行了快速精確的計算;為了彌補加工誤差,在諧振腔中加入調(diào)諧螺釘。最后,對設計的濾波器進行了實物加工和調(diào)試,并對測試結(jié)果進行了分析。
[Abstract]:With the rapid development of modern electronic technology, the communication system of radar, the output power of the transmitter of the increasingly high demand. In the 8mm band even higher frequency, the output power of single solid state device is limited, can not meet the system requirements of high power, usually adopt power synthesis technology to improve the output power of the system. Firstly, based on radial waveguide power synthesis technology, developed the 8mm band four way power amplifier; and the filter is used as a frequency selection device, is one of the important components of millimeter wave communication system, its performance directly affects the running quality of the whole communication system. The paper combining with the requirements of the project design for 8mm band waveguide filter. The main contents of this paper as follows: the first part of the thesis is the research of 8mm band power combining amplifier, including passive and active power combiner network circuit The synthesis of passive networks. The power part, in order to overcome the power combiner is reduced because the synthesis efficiency of amplitude and phase consistency of the problem, using a radial waveguide as the core unit of power combining network, the whole network is composed of passive rectangular waveguide coaxial waveguide - symmetric radial waveguide rectangular waveguide power divider / combiner and waveguide back-to-back structure the microstrip probe transition structure, in order to expand the bandwidth of a power divider / combiner, joined in the bottom of the coaxial probe cone structure, to achieve a smooth transition to the radial waveguide coaxial waveguide was fabricated and tested. In the simulation, the results is consistent with the theoretical design; active power combiner, loading four AMMC5040 in the 4 back-to-back waveguide to microstrip converter, combining the structure of passive network to achieve four way power combining amplifier output. The final The test results show that the power combiner in the frequency range from 32 to 38GHz, the second part of the synthesis efficiency was more than 70%. of the thesis is to study and design of 8mm band waveguide filter, inductor with bilateral diaphragm structure, analysis and comparison of several commonly used methods of filter design, using the method of analysis and the combination of the filter the size is calculated accurately and rapidly; in order to compensate for the processing error, adding tuning screw in the resonant cavity. Finally, the design of a filter for the physical processing and debugging, and the test results were analyzed.

【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;TN713

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本文編號：1440798