本文選題：高功率 + 低插損　； 參考：《中國(guó)科學(xué)技術(shù)大學(xué)》2017年碩士論文

【摘要】：移相器是相控陣?yán)走_(dá)、微波通信、高功率微波等系統(tǒng)不可或缺的器件,在應(yīng)用中起到波束指向控制和波束成形作用。高功率微波、相控陣?yán)走_(dá)等應(yīng)用的發(fā)展,對(duì)移相器提出了更高要求,如高功率容量、低插損、小型化等。本文著重研究了X波段高功率低插損波導(dǎo)移相器和X波段低插損小型化波導(dǎo)移相器。首先,基于加載型移相器的基本原理,提出了高功率低插損PIN管波導(dǎo)移相結(jié)構(gòu)。該移相結(jié)構(gòu)包括:(1)在寬壁上有開(kāi)槽的金屬波導(dǎo);(2)加載在該槽上的雙支節(jié)導(dǎo)帶;(3)兩個(gè)跨接在雙支節(jié)導(dǎo)帶上的耐高功率PIN管(如碳化硅管);(4)相關(guān)的控制電路等。通過(guò)控制兩個(gè)PIN管的偏置,改變其電容值,實(shí)現(xiàn)相位變化。結(jié)果表明,與同類(lèi)的PIN管波導(dǎo)移相結(jié)構(gòu)相比,其插入損耗低,回波損耗小,且峰值功率容量理論上在MW級(jí)別。其次,基于Y型結(jié)鐵氧體環(huán)行器,采用大自旋波線(xiàn)寬鐵氧體材料以及將直流磁偏置電路外置,設(shè)計(jì)了一種可耐高功率的低插損鐵氧體環(huán)行器開(kāi)關(guān)。再次,基于該鐵氧體環(huán)行器開(kāi)關(guān),結(jié)合U型波導(dǎo)(或慢波波導(dǎo))結(jié)構(gòu),提出并實(shí)現(xiàn)了一種新型的180°移相、高功率低插損的波導(dǎo)移相結(jié)構(gòu),并進(jìn)行了加工和測(cè)試。低功率實(shí)測(cè)結(jié)果與仿真結(jié)果基本吻合。最后,基于上述兩種移相結(jié)構(gòu),設(shè)計(jì)了四位高功率低插損波導(dǎo)移相器。相比于現(xiàn)有結(jié)果,該移相器功率容量較高,插入損耗更小�；诩虞d型移相器原理,利用在雙脊波導(dǎo)上對(duì)稱(chēng)加載、非等距級(jí)聯(lián)"L"型導(dǎo)帶,實(shí)現(xiàn)了小型化、小角度移相的"L"型導(dǎo)帶加載波導(dǎo)移相結(jié)構(gòu)。同時(shí),在雙脊波導(dǎo)上加載環(huán)行導(dǎo)帶結(jié)構(gòu),采用開(kāi)關(guān)控制該導(dǎo)帶結(jié)構(gòu)的"開(kāi)環(huán)"和"閉環(huán)"狀態(tài),進(jìn)而實(shí)現(xiàn)小型化、大角度相移;將上述兩種結(jié)構(gòu)級(jí)聯(lián),設(shè)計(jì)了低插損小型化波導(dǎo)移相器,相移量范圍為0°～180°。結(jié)果表明,與同類(lèi)的波導(dǎo)移相器相比,其插入損耗較小,尺寸明顯減小。
[Abstract]:Phase shifter is an indispensable device in phased array radar, microwave communication, high power microwave and other systems. It plays the role of beam-pointing control and beamforming in application. The development of high power microwave, phased array radar and other applications has put forward higher requirements for phase shifters, such as high power capacity, low insertion loss, miniaturization and so on. In this paper, X band high power low insertion loss waveguide phase shifter and X band low insertion loss miniaturized waveguide phase shifter are studied. Firstly, based on the principle of loading phase shifter, a phase shift structure of high power and low insertion loss PIN waveguide is proposed. The phase shifting structure includes: 1) slotted metal waveguide / 2) loaded on the slot) two control circuits related to the high power resistant PIN tube (e.g. silicon carbide tube / 4) connected to the double node guide band. By controlling the bias of two PIN transistors, the capacitance value is changed and the phase change is realized. The results show that the insertion loss and echo loss are lower and the peak power capacity is in the MW level theoretically compared with the similar PIN waveguide phase shifting structure. Secondly, based on Y type ferrite circulator, a high power low insertion loss ferrite circulator switch is designed by using large spin wave linewidth ferrite material and external DC magnetic bias circuit. Thirdly, based on the ferrite circulator switch and combined with the U-type waveguide (or slow wave waveguide) structure, a novel phase shift structure with 180 擄phase shift, high power and low insertion loss is presented and tested. The measured results of low power are in good agreement with the simulation results. Finally, a four-bit high power low-loss waveguide phase shifter is designed based on the above two phase-shifting structures. Compared with the existing results, the phase shifter has higher power capacity and less insertion loss. Based on the principle of loading phase shifter, the "L" type waveguide phase shifting structure with small angle and small angle is realized by using symmetrical loading and non-equidistant cascaded "L" type conduction band on double ridge waveguide. At the same time, the circular conduction band structure is loaded on the double ridge waveguide, and the open loop and closed loop states of the guide band structure are controlled by switch, which can realize miniaturization and large angle phase shift. A miniaturized waveguide phase shifter with low insertion loss is designed. The range of phase shifter is 0 擄~ 180 擄. The results show that the insertion loss and size of the waveguide phase shifter are smaller and smaller than those of the similar waveguide phase shifter.
【學(xué)位授予單位】：中國(guó)科學(xué)技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TN623

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本文編號(hào)：1841270