微波數(shù)字移相器的建模與設(shè)計
發(fā)布時間：2019-01-17 19:35
【摘要】：作為相控陣?yán)走_(dá)中重要的相位控制器件,微波數(shù)字移相器在各領(lǐng)域廣泛應(yīng)用。而在傳統(tǒng)的移相器設(shè)計中,無論是仿真還是調(diào)試,都需要做大量的重復(fù)性的工作,所以移相器設(shè)計效率亟需提高,以滿足其日益增長的市場需求。若能充分利用現(xiàn)有的微波CAD(Computer Aided Design)建模仿真軟件,在其已有功能的基礎(chǔ)上制作一些適合移相器設(shè)計的專用插件,可以有效縮短設(shè)計周期、減少設(shè)計人員工作量。本課題即是基于上述指導(dǎo)思想而提出。本文主要研究內(nèi)容如下:引入研究對象微波數(shù)字移相器,學(xué)習(xí)了數(shù)字移相器的理論知識,包括分類,技術(shù)指標(biāo),以及基本移相電路的分析等,還給出了一些改進(jìn)結(jié)構(gòu)的分析,從根源上明確了移相器的工作原理,為建立更恰當(dāng)?shù)姆抡婺Ｐ偷於死碚摶A(chǔ)。對數(shù)字移相器中的分立器件以及基本電路進(jìn)行了總結(jié),給出了移相器中主要分立器件的模型及仿真分析,包括二極管、金絲、玻珠和SMA接頭、電容電感,并對一些關(guān)鍵參數(shù)進(jìn)行了比較分析;給出了移相器設(shè)計過程中所需基本電路模型,包括二極管等效模型,偏置電路,幾種基本類型移相電路等。其中,所有建模工作均基于二維仿真軟件ADS(Advanced Design System)和三維仿真軟件HFSS(High Frequency Structure Simulator)。利用ADS軟件中的DesignGuide平臺,為移相器設(shè)計中使用較多的的電路制作了可調(diào)用的Tab形式和Palette形式的插件,為設(shè)計者提供了方便,且減少了工作量;且?guī)缀跛蠬FSS模型都以全參數(shù)的形式建立,可供其他設(shè)計者調(diào)取使用。在所建模型的基礎(chǔ)上設(shè)計了L波段三位多層板移相器和Ku波段七位非色散陶瓷基片移相器,加工了單元移相器和多位移相器實物,并對各移相器進(jìn)行了測試、分析和調(diào)試,結(jié)果驗證了前期建模分析的準(zhǔn)確性和可行性。其中,在設(shè)計級聯(lián)電路之前,先加工出其中典型相位的單元電路的實物,經(jīng)驗證可行之后再進(jìn)行整體的設(shè)計。在設(shè)計制作L波段三位多層板數(shù)字移相器之前,先加工了其中的45°單元,經(jīng)測試后滿足要求,說明建模仿真設(shè)計方案可行,隨后才進(jìn)行三位級聯(lián)移相器的設(shè)計加工;在設(shè)計制作Ku波段七位非色散陶瓷基片移相器之前,先加工了開關(guān)線加載型的180°單元以及反射型的11.25°單元,隨后才進(jìn)行七位級聯(lián)移相電路的設(shè)計加工。最終的測試結(jié)果均滿足技術(shù)指標(biāo)要求。
[Abstract]:As an important phase controller in phased array radar, microwave digital phase shifter is widely used in various fields. In the traditional phase shifter design, both simulation and debugging need to do a lot of repetitive work, so the efficiency of phase shifter design needs to be improved to meet its growing market demand. If we can make full use of the existing microwave CAD (Computer Aided Design) modeling and simulation software and make some special plug-ins suitable for the design of the phase shifter on the basis of its existing functions, we can effectively shorten the design period and reduce the workload of the designers. This subject is based on the above-mentioned guiding ideology and put forward. The main contents of this paper are as follows: introduce microwave digital phase shifter, study the theoretical knowledge of digital phase shifter, including classification, technical index, and analysis of basic phase-shifting circuit, and give some analysis of the improved structure. The working principle of the phase shifter is clarified from the source, which lays a theoretical foundation for the establishment of a more appropriate simulation model. The discrete devices and their basic circuits in digital phase shifter are summarized. The model and simulation analysis of the main discrete devices in the phase shifter are given, including diode, gold wire, glass bead and SMA connector, capacitive inductance, and so on. Some key parameters are compared and analyzed. The basic circuit models needed in the design of the phase shifter are given, including the equivalent diode model, the bias circuit, several basic types of phase-shifting circuits and so on. Among them, all modeling work is based on 2D simulation software ADS (Advanced Design System) and 3D simulation software HFSS (High Frequency Structure Simulator). By using the DesignGuide platform in ADS software, the paper makes the callable Tab and Palette plug-in for the design of the phase shifter, which provides convenience for the designer and reduces the workload. Almost all HFSS models are constructed in the form of full parameters, which can be used by other designers. On the basis of the model, the L-band three-bit multilayer phase shifter and the Ku band seven-bit non-dispersive ceramic substrate phase shifter are designed. The unit phase shifter and the multi-bit phase shifter are manufactured, and each phase shifter is tested, analyzed and debugged. The results verify the accuracy and feasibility of the previous modeling and analysis. Before the cascade circuit is designed, the typical phase of the cell circuit is processed first, and then the whole design is carried out after the feasibility of the circuit is verified. Before the design and manufacture of the L-band three-bit multilayer digital phase shifter, the 45 擄unit of the phase shifter was machined. After testing, it was proved that the design scheme of modeling and simulation was feasible, and then the three-bit cascade phase shifter was designed and processed. Before the design and fabrication of the seven-bit non-dispersive ceramic substrate phase shifter in Ku band, the 180 擄element loaded on the switch line and the 11.25 擄element of the reflective type are machined first, then the seven-bit cascade phase-shifting circuit is designed and machined. The final test results all meet the technical requirements.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN623
[Abstract]:As an important phase controller in phased array radar, microwave digital phase shifter is widely used in various fields. In the traditional phase shifter design, both simulation and debugging need to do a lot of repetitive work, so the efficiency of phase shifter design needs to be improved to meet its growing market demand. If we can make full use of the existing microwave CAD (Computer Aided Design) modeling and simulation software and make some special plug-ins suitable for the design of the phase shifter on the basis of its existing functions, we can effectively shorten the design period and reduce the workload of the designers. This subject is based on the above-mentioned guiding ideology and put forward. The main contents of this paper are as follows: introduce microwave digital phase shifter, study the theoretical knowledge of digital phase shifter, including classification, technical index, and analysis of basic phase-shifting circuit, and give some analysis of the improved structure. The working principle of the phase shifter is clarified from the source, which lays a theoretical foundation for the establishment of a more appropriate simulation model. The discrete devices and their basic circuits in digital phase shifter are summarized. The model and simulation analysis of the main discrete devices in the phase shifter are given, including diode, gold wire, glass bead and SMA connector, capacitive inductance, and so on. Some key parameters are compared and analyzed. The basic circuit models needed in the design of the phase shifter are given, including the equivalent diode model, the bias circuit, several basic types of phase-shifting circuits and so on. Among them, all modeling work is based on 2D simulation software ADS (Advanced Design System) and 3D simulation software HFSS (High Frequency Structure Simulator). By using the DesignGuide platform in ADS software, the paper makes the callable Tab and Palette plug-in for the design of the phase shifter, which provides convenience for the designer and reduces the workload. Almost all HFSS models are constructed in the form of full parameters, which can be used by other designers. On the basis of the model, the L-band three-bit multilayer phase shifter and the Ku band seven-bit non-dispersive ceramic substrate phase shifter are designed. The unit phase shifter and the multi-bit phase shifter are manufactured, and each phase shifter is tested, analyzed and debugged. The results verify the accuracy and feasibility of the previous modeling and analysis. Before the cascade circuit is designed, the typical phase of the cell circuit is processed first, and then the whole design is carried out after the feasibility of the circuit is verified. Before the design and manufacture of the L-band three-bit multilayer digital phase shifter, the 45 擄unit of the phase shifter was machined. After testing, it was proved that the design scheme of modeling and simulation was feasible, and then the three-bit cascade phase shifter was designed and processed. Before the design and fabrication of the seven-bit non-dispersive ceramic substrate phase shifter in Ku band, the 180 擄element loaded on the switch line and the 11.25 擄element of the reflective type are machined first, then the seven-bit cascade phase-shifting circuit is designed and machined. The final test results all meet the technical requirements.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN623
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