本文選題：耦合模理論 + 多模耦合��； 參考：《浙江大學》2017年碩士論文

【摘要】：濾波器和環(huán)形器是微波通信系統(tǒng)中的重要組成部分,在無線通信基站及終端產(chǎn)品中得到廣泛應用。本文首次將光學中的耦合模理論融入基于多模諧振耦合的微波電路設計中,并分別進行了微帶帶通濾波器和有源三端口環(huán)形器的設計研究。本文首先詳細推導了 N個諧振模式的耦合情況,提出了 N階無源濾波器從解析計算到特征模仿真并最終優(yōu)化實現(xiàn)的完整的綜合設計方法。并且成功將損耗項引入解析計算中,實現(xiàn)了理論計算與全波仿真的濾波器頻率響應結(jié)果間的良好吻合,大幅提高濾波器的設計速度和精度。其后,基于該方法設計了具有強阻帶抑制的以GaAs為襯底材料的二階、三階微帶帶通濾波器和利用PCB材料制作的板級三階微帶帶通濾波器。利用三維電磁仿真軟件HFSS和射頻電路設計與仿真軟件ADS對設計的濾波器進行了建模、仿真及優(yōu)化,并對濾波器實物進行了相關(guān)測試,測試結(jié)果與理論仿真結(jié)果吻合良好。此外,基于耦合模理論完成了片上集成非互易器件的設計和實現(xiàn),研制了一種連續(xù)波收發(fā)共用雷達系統(tǒng)中的微波有源三端口環(huán)形器。對其分別進行了板級和芯片級的設計和仿真優(yōu)化。仿真結(jié)果顯示,所設計的有源三端口環(huán)形器在工作頻率范圍內(nèi)具有較好的傳輸與隔離性能。此環(huán)形器的設計方法對實現(xiàn)傳統(tǒng)非互易微波器件的芯片化并最終實現(xiàn)與系統(tǒng)前端微波電路的單芯片集成化發(fā)展有著重要意義。最后,本文對于研究過程中出現(xiàn)的誤差和相關(guān)問題以及可改進提高之處進行了總結(jié)與展望。
[Abstract]:Filters and circulators are important components of microwave communication systems and are widely used in wireless communication base stations and terminal products. In this paper, the coupling mode theory in optics is first incorporated into the microwave circuit design based on multi-mode resonant coupling, and the design of microstrip bandpass filter and active three-port circulator are studied respectively. In this paper, the coupling of N resonant modes is deduced in detail, and a comprehensive design method of N order passive filter from analytic calculation to feature simulation is presented. The loss term is successfully introduced into the analytical calculation, which achieves a good agreement between the theoretical calculation and the frequency response results of the full-wave simulation filter, and greatly improves the design speed and accuracy of the filter. Then, based on this method, the second-order, third-order microstrip bandpass filters with strong stopband suppression on GaAs substrate and the board-level third-order microstrip bandpass filters fabricated from PCB materials are designed. The designed filter is modeled, simulated and optimized by using 3D electromagnetic simulation software HFSS and RF circuit design and simulation software ADS, and the filter physical object is tested. The test results are in good agreement with the theoretical simulation results. In addition, based on the coupled mode theory, the design and implementation of on-chip integrated non-reciprocal devices are completed, and a microwave active three-port circulator in a continuous wave transceiver radar system is developed. The design and simulation optimization of board level and chip level are carried out respectively. The simulation results show that the designed active three-port circulator has better transmission and isolation performance in the operating frequency range. The design method of the annular device is of great significance to realize the chip of traditional non-reciprocal microwave device and finally realize the development of single-chip integration with the front-end microwave circuit of the system. Finally, this paper summarizes and prospects the errors and related problems in the research process.
【學位授予單位】：浙江大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TN713;TN621

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相關(guān)期刊論文 前2條

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2 余聲明;微波鐵氧體小型化表面安裝器件[J];世界產(chǎn)品與技術(shù);2002年06期

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本文編號：1937604