本文選題：帶通濾波器 + 高抑制��； 參考：《南京理工大學(xué)》2015年碩士論文

【摘要】：隨著無線通信行業(yè)和國防尖端系統(tǒng)的飛速發(fā)展,對射頻器件尤其是濾波器的要求日漸嚴(yán)苛,濾波器的高抑制和小型化是目前設(shè)計(jì)中存在的兩大挑戰(zhàn)�；贚TCC技術(shù)的三維集成結(jié)構(gòu)可以有效地減小器件尺寸,且在電路設(shè)計(jì)上有更大的靈活性,使其成為當(dāng)前業(yè)內(nèi)研究的一大熱點(diǎn)。本文以高抑制帶通濾波器作為核心研究內(nèi)容,對基于LTCC技術(shù)的帶通濾波器的設(shè)計(jì)理論進(jìn)行了探索和研究,并借助電磁仿真軟件ADS和HFSS對濾波器的設(shè)計(jì)作了深入的分析與創(chuàng)新,最后結(jié)合實(shí)際的工程需求,給出了三款應(yīng)用于國防通信系統(tǒng)的高性能帶通濾波器的實(shí)現(xiàn)方法,測試曲線與仿真曲線吻合度較高,驗(yàn)證了設(shè)計(jì)理論的準(zhǔn)確性。本文的主要設(shè)計(jì)工作如下：半集總參數(shù)帶通濾波器的基本諧振單元為傳統(tǒng)的電感、電容結(jié)構(gòu),而級(jí)間采用了空間耦合,在一定程度上解決了器件工作在低頻段時(shí)體積較大的難題。本文在對單個(gè)諧振級(jí)研究的基礎(chǔ)上,結(jié)合濾波器的設(shè)計(jì)理論,給出了半集總帶通濾波器的電路拓?fù)浜腿S結(jié)構(gòu),成功研制了一款170MHz帶通濾波器。在此基礎(chǔ)上,搭建了兩種級(jí)聯(lián)帶通濾波器的三維模型并分析了其優(yōu)缺點(diǎn),級(jí)聯(lián)后帶通濾波器的阻帶抑制度大大提高。分布參數(shù)帶通濾波器以傳統(tǒng)的三層帶狀線作為諧振單元,從介紹帶狀線諧振器的基本理論出發(fā),闡述了其數(shù)學(xué)模型和結(jié)構(gòu)特點(diǎn),借助ADS和HFSS設(shè)計(jì)了一款六級(jí)帶通濾波器,并利用傳輸零點(diǎn)產(chǎn)生原理成功地在高低阻帶各引入兩個(gè)零點(diǎn)。該濾波器結(jié)構(gòu)簡單、性能優(yōu)異,在阻帶抑制和小型化等方面有明顯優(yōu)勢。本文設(shè)計(jì)的三款基于三維集成的帶通濾波器性能優(yōu)異,集成度好,成品率高,完全滿足應(yīng)用需求,目前均已批量生產(chǎn)并應(yīng)用。
[Abstract]:With the rapid development of wireless communication industry and national defense cutting-edge systems, the requirements of RF devices, especially filters, are increasingly stringent. The high suppression and miniaturization of filters are two major challenges in the design. The 3D integrated structure based on LTCC technology can effectively reduce the device size and has more flexibility in circuit design, which makes it a hot spot in the field of current research. In this paper, the design theory of bandpass filter based on LTCC technology is explored and studied, and the design of the filter is deeply analyzed and innovated with the aid of electromagnetic simulation software ADS and HFSS. Finally, according to the actual engineering requirements, the realization methods of three high performance bandpass filters used in national defense communication system are presented. The test curve is in good agreement with the simulation curve, and the accuracy of the design theory is verified. The main design work of this paper is as follows: the basic resonant unit of the half-lumped parameter band-pass filter is the traditional inductance and capacitance structure, and the spatial coupling is used among the stages. To some extent, it solves the problem of large volume when the device works in low frequency band. Based on the research of single resonant level and the design theory of filter, the circuit topology and 3D structure of half-lumped band-pass filter are given in this paper, and a 170MHz band-pass filter is developed successfully. On this basis, the 3D models of two cascaded band-pass filters are built and their advantages and disadvantages are analyzed. The stopband suppression degree of the cascaded band-pass filters is greatly improved. The distributed parameter band-pass filter takes the traditional three-layer band line as the resonant unit. Based on the introduction of the basic theory of the strip line resonator, the mathematical model and structural characteristics of the band-pass filter are described. A six-stage band-pass filter is designed with the help of ADS and HFSS. Using the principle of transmission zero generation, two zeros are successfully introduced in each high and low stopband. The filter has simple structure, excellent performance and obvious advantages in stopband suppression and miniaturization. The three bandpass filters based on 3D integration have excellent performance, good integration, high yield, and meet the requirements of application. All of them have been produced and applied in batches at present.
【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN713.5

【共引文獻(xiàn)】

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