基于波導(dǎo)的多路寬帶毫米波空間功率合成器研究
發(fā)布時(shí)間:2018-09-12 05:29
【摘要】:隨著雷達(dá)與通信技術(shù)的快速發(fā)展,,對(duì)大功率、寬頻帶、高頻率微波功率源的需求越來(lái)越迫切,但是在高頻段功率放大芯片的輸出功率卻遠(yuǎn)遠(yuǎn)不能滿足技術(shù)發(fā)展的需求。因此,需要通過(guò)功率合成技術(shù)來(lái)得到大功率的輸出。本文在此背景下,設(shè)計(jì)了兩款毫米波頻段的空間功率合成器,通過(guò)仿真測(cè)試驗(yàn)證了該結(jié)構(gòu)的合理性與可行性。主要工作如下: (1)在40GHz~47GHz頻段內(nèi)設(shè)計(jì)了一款20路的徑向波導(dǎo)空間功率合成器,首先分析了徑向波導(dǎo)內(nèi)電磁場(chǎng)的分布,然后仿真了徑向波導(dǎo)功分結(jié)構(gòu)、波導(dǎo)-微帶探針過(guò)渡結(jié)構(gòu),最后對(duì)其進(jìn)行熱設(shè)計(jì)、工藝加工。通過(guò)測(cè)試得到,該結(jié)構(gòu)在要求的頻段內(nèi)輸出功率達(dá)到了40dBm,增益為13dB,滿足了指標(biāo)的要求。 (2)通過(guò)在徑向波導(dǎo)各分支電路設(shè)計(jì)一種新型結(jié)構(gòu)的漸變脊,對(duì)上述20路徑向波導(dǎo)空間功率合成器的結(jié)構(gòu)進(jìn)行了改進(jìn)。通過(guò)仿真發(fā)現(xiàn),加脊后的合成器不僅S參數(shù)得到了很好的改善,而且有效地拓寬了帶寬。 (3)在50GHz~75GHz頻段內(nèi)設(shè)計(jì)了一款16路的鏈?zhǔn)讲▽?dǎo)空間功率合成器,該結(jié)構(gòu)首先通過(guò)標(biāo)準(zhǔn)波導(dǎo)功分為兩路,每路分支通過(guò)擴(kuò)展波導(dǎo)漸變到標(biāo)準(zhǔn)波導(dǎo)尺寸,再進(jìn)行鏈?zhǔn)焦Ψ,完成?6路的功分合成結(jié)構(gòu)。由于該結(jié)構(gòu)工作頻率較高,尺寸較小且結(jié)構(gòu)相對(duì)復(fù)雜,在設(shè)計(jì)與加工過(guò)程中需要解決一些技術(shù)難點(diǎn)。如:由于路數(shù)較多,各支路間隔離比較差,通過(guò)設(shè)置介質(zhì)膜片有效地增強(qiáng)了各支路間的隔離;由于該合成器尺寸較小,波導(dǎo)腔比較深,傳統(tǒng)的加工工藝無(wú)法實(shí)現(xiàn)該腔體的加工,需要用線切割的方式來(lái)加工。
[Abstract]:With the rapid development of radar and communication technology, the demand for high-power, broadband, high-frequency microwave power sources is becoming more and more urgent, but the output power of high-frequency power amplifier chip is far from meeting the needs of technological development. Two millimeter-wave spatial power synthesizers are designed, and the rationality and feasibility of the structure are verified by simulation test.
(1) A 20-channel radial waveguide spatial power synthesizer is designed in the frequency band of 40GHz~47GHz. Firstly, the distribution of electromagnetic field in the radial waveguide is analyzed. Then the radial waveguide power dividing structure and the Waveguide-microstrip probe transition structure are simulated. Finally, the thermal design and fabrication of the synthesizer are carried out. The output power reaches 40dBm and the gain is 13dB, which meets the requirements of the index.
(2) The structure of the above 20-path waveguide spatial power synthesizer is improved by designing a new type of tapered ridge in each branch circuit of the radial waveguide.
(3) A 16-channel chain waveguide spatial power synthesizer is designed in the frequency band of 50GHz~75GHz. The structure is divided into two channels by the standard waveguide power. Each branch is gradually changed to the standard waveguide size through the extended waveguide, and then the chain power is divided. The 16-channel power division synthesizer is completed because of its high frequency, small size and good performance. The structure of the synthesizer is relatively complex and some technical difficulties need to be solved in the process of design and machining. It needs to be machined by wire cutting.
【學(xué)位授予單位】:中北大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類號(hào)】:TN73
本文編號(hào):2238046
[Abstract]:With the rapid development of radar and communication technology, the demand for high-power, broadband, high-frequency microwave power sources is becoming more and more urgent, but the output power of high-frequency power amplifier chip is far from meeting the needs of technological development. Two millimeter-wave spatial power synthesizers are designed, and the rationality and feasibility of the structure are verified by simulation test.
(1) A 20-channel radial waveguide spatial power synthesizer is designed in the frequency band of 40GHz~47GHz. Firstly, the distribution of electromagnetic field in the radial waveguide is analyzed. Then the radial waveguide power dividing structure and the Waveguide-microstrip probe transition structure are simulated. Finally, the thermal design and fabrication of the synthesizer are carried out. The output power reaches 40dBm and the gain is 13dB, which meets the requirements of the index.
(2) The structure of the above 20-path waveguide spatial power synthesizer is improved by designing a new type of tapered ridge in each branch circuit of the radial waveguide.
(3) A 16-channel chain waveguide spatial power synthesizer is designed in the frequency band of 50GHz~75GHz. The structure is divided into two channels by the standard waveguide power. Each branch is gradually changed to the standard waveguide size through the extended waveguide, and then the chain power is divided. The 16-channel power division synthesizer is completed because of its high frequency, small size and good performance. The structure of the synthesizer is relatively complex and some technical difficulties need to be solved in the process of design and machining. It needs to be machined by wire cutting.
【學(xué)位授予單位】:中北大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類號(hào)】:TN73
【參考文獻(xiàn)】
相關(guān)期刊論文 前5條
1 趙海;劉穎力;張懷武;胡嵩松;;寬帶Wilkinson功分器的設(shè)計(jì)仿真與制作[J];電子元件與材料;2010年12期
2 李躍鋒;陳福媛;李磊;;一種Ku波段固態(tài)發(fā)射機(jī)的設(shè)計(jì)[J];火控雷達(dá)技術(shù);2006年04期
3 邵美婷;寧曰民;劉祖深;;一種新型的漸變脊徑向波導(dǎo)空間功率合成器設(shè)計(jì)[J];計(jì)算機(jī)測(cè)量與控制;2014年11期
4 劉慶想,袁成衛(wèi);一種新型同軸TEM-圓波導(dǎo)TE_(11)模式變換器[J];強(qiáng)激光與粒子束;2004年11期
5 寧曰民;姜萬(wàn)順;祝慶霖;張文強(qiáng);;對(duì)極鰭線在空間功率合成器中的應(yīng)用[J];微波學(xué)報(bào);2012年S2期
相關(guān)博士學(xué)位論文 前1條
1 謝小強(qiáng);固態(tài)毫米波波導(dǎo)空間功率合成技術(shù)研究[D];電子科技大學(xué);2009年
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