本文選題：PSpice軟件 + mG?C帶通濾波器��； 參考：《電子科技大學》2015年碩士論文

【摘要】：論文研究并測試全新的小波實現(xiàn)步驟:小波變換理論推導從而找到使用硬件實現(xiàn)的可能性—頻域法模擬電路測試貼近小波變換—測試盒調整濾波器帶通特性—濾波器組實現(xiàn)變換,通過嚴謹的理論分析和反復的實踐操作,最終用由通道濾波器組構成的集成電路實現(xiàn)了小波變換信號濾波效果并通過檢驗。論文主要包括以下工作:(1)通過理論推導發(fā)現(xiàn)了小波變化的函數理論與濾波器的濾波過程高度一致,使得用模擬電路的濾波過程實現(xiàn)小波變換成為可能,進一步研究了實現(xiàn)連續(xù)變換的科學方法。(2)詳細用函數演變的方法從理論角度推算小波變換的模擬步驟,針對小波變換的濾波器組件實現(xiàn)分別研究了不同種類的小波并針對性的選擇初步實現(xiàn)圖像處理的目標小波。(3)詳細研究和對比了PSpice軟件模擬電路結構和小波變換的過程。找到了PSpice軟件在模擬階段的頻域特性、帶寬精度和性價比三大解決方案,給出了基于復解調技術的連續(xù)小波變換頻域法實現(xiàn)結構框圖。(4)論文集中研究電流模式電路及mG?C帶通濾波器,設計了中心頻率可調的mG?C連續(xù)時間的二階帶通濾波器。論文研究和設計了片內自校正環(huán)節(jié)使得濾波器參數能自動調諧,保持了二階帶通濾波器初始賦值的計算準確,減少了誤差,滿足設計標準值在不同分析階段都能保持基準值的預期,擴大了跨導輸入級的傳輸特性,研究出能促進輸入級傳輸特性線性程度改善的模式,獲得了線性范圍擴大的理想結果。(5)論文研究了串行和并行的濾波器組結構,設計了由并行通道濾波器組構成的集成電路,最后結合Matlab軟件和PSpice軟件實現(xiàn)小波變換的仿真模擬。為了更好的驗證工程上的應用,用圖像邊緣處理的方式驗證小波變換仿真模擬的實用性。
[Abstract]:This paper studies and tests a new wavelet realization step: wavelet transform theory derivation to find out the possibility of using hardware to realize the frequency domain analog circuit test close to wavelet transform-test box adjust filter bandpass characteristic-filter The wave-group implements the transformation, Through rigorous theoretical analysis and repeated practice, the wavelet transform signal filtering effect is realized with the integrated circuit composed of channel filter banks and tested. This paper mainly includes the following work: (1) through the theoretical derivation, it is found that the function theory of wavelet variation is highly consistent with the filtering process of the filter, which makes it possible to realize wavelet transform with the filter process of analog circuit. In this paper, the scientific method of realizing continuous transformation is studied in detail. The simulation steps of wavelet transform are calculated from the theoretical point of view by the method of function evolution. Aiming at the realization of filter components of wavelet transform, different kinds of wavelets are studied and the target wavelet of image processing is selected. (3) the structure of analog circuit and the process of wavelet transform of PSpice software are studied and compared in detail. In this paper, three solutions of PSpice software in frequency domain, bandwidth accuracy and cost performance ratio are found. The structure block diagram of frequency domain of continuous wavelet transform based on complex demodulation technique is presented. In this paper, the current mode circuit and mG?C bandpass filter are studied, and the second order bandpass filter with mG?C continuous time with adjustable center frequency is designed. In this paper, the on-chip self-tuning link is designed to automatically tune the filter parameters, which keeps the calculation accuracy of the initial assignment of the second-order band-pass filter and reduces the error. It meets the expectation that the design standard value can maintain the reference value in different analysis stages, expands the transmission characteristics of the transconductance input stage, and studies the mode that can improve the linearity of the input stage transmission characteristics. In this paper, the serial and parallel filter bank structures are studied, and the integrated circuit composed of parallel channel filter banks is designed. Finally, the simulation of wavelet transform is realized with Matlab software and PSpice software. In order to better verify the application in engineering, the practicability of wavelet transform simulation is verified by image edge processing.
【學位授予單位】：電子科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TN713

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