本文關(guān)鍵詞：N通道濾波器的研究與設(shè)計(jì)　出處：《廣西師范大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： N通道濾波 信道選擇 可調(diào)諧 開關(guān)電容

【摘要】：隨著集成電路產(chǎn)品廣泛應(yīng)用到民用領(lǐng)域和軍事領(lǐng)域的各個(gè)方面,人們對集成電路的性能要求也不斷提高。濾波器作為通信系統(tǒng)中應(yīng)用極為廣泛的單元之一,它在信號(hào)的獲取、傳輸及處理中起著非常重要的作用。多數(shù)情況下,濾波器性能的好壞,將對整個(gè)系統(tǒng)的性能產(chǎn)生決定性的影響。因此隨著信息科學(xué)技術(shù)尤其是無線通信技術(shù)的不斷演進(jìn),對濾波器功能及性能的要求也不斷的提高。而由于N通道濾波器具有時(shí)鐘頻率直接可調(diào),比CMOS片上LC濾波器具有更高的品質(zhì)因數(shù),高線性度和完美的縮放工藝等特點(diǎn),使得很多人將目光投向N通道濾波器技術(shù)。本文旨在對N通道濾波技術(shù)進(jìn)行深入研究并設(shè)計(jì)出性能優(yōu)良的N通道濾波器電路。為了實(shí)現(xiàn)此目的,本文首先研究和分析了設(shè)計(jì)N通道濾波器需要掌握的電路理論,同時(shí)對米勒濾波技術(shù)、中心頻率變換技術(shù)、增益提高技術(shù)等多種技術(shù)進(jìn)行了深入研究。然后在此基礎(chǔ)上,完成了以下三款N通道濾波器的設(shè)計(jì)與仿真驗(yàn)證:(1)研究了一款單端米勒N通道帶通濾波器,使用米勒濾波技術(shù),實(shí)現(xiàn)電容倍增,有效減少芯片面積,實(shí)現(xiàn)開關(guān)導(dǎo)通電阻倍減,減少本振支路功耗。通過對8通道帶通濾波器前仿真驗(yàn)證:其頻率可調(diào)范圍為0.2～2.3GHz,3dB帶寬為5MHz,增益17dB～18.9dB。輸入三階交調(diào)點(diǎn)為8.7dBm。噪聲系數(shù)為5.4dB。(2)研究設(shè)計(jì)了一款全差分米勒N通道帶通濾波器,通過兩個(gè)中心頻率不同的N通道濾波網(wǎng)絡(luò)差分,增加濾波器的帶寬和階數(shù)。同時(shí)使用中心頻率變換技術(shù),使得兩個(gè)中心頻率不同的N通道網(wǎng)絡(luò)由一個(gè)時(shí)鐘控制產(chǎn)生,且兩個(gè)N通道網(wǎng)絡(luò)的中心頻率相對于時(shí)鐘頻率上下偏移相同的量。通過對8通道帶通濾波器前仿真驗(yàn)證:其頻率可調(diào)范圍為0.2～2.3GHz,3dB帶寬增加為40MHz,增益26dB～27.8dB。輸入三階交調(diào)點(diǎn)為21.5dBm。噪聲系數(shù)為8.2dB。(3)研究了一款N通道陷波帶通兩用濾波器,使用時(shí)鐘差分技術(shù)和增益提高技術(shù),該電路具有結(jié)構(gòu)簡單易于實(shí)現(xiàn)兩種濾波的特點(diǎn)。對8通道濾波器進(jìn)行了前仿真驗(yàn)證,之后完成了版圖設(shè)計(jì)與后仿真驗(yàn)證。后仿真結(jié)果顯示,其頻率可調(diào)范圍為0.2～2.2GHz,帶通濾波時(shí)增益8.0dB～9.2dB,陷波時(shí)增益為-5dB～-4dB,最大抑制比為22dB。輸入三階交調(diào)點(diǎn)為13.3dBm,噪聲系數(shù)為4.2dB。
[Abstract]:With the wide application of integrated circuit products in civil and military fields, the performance requirements of integrated circuits have been continuously improved. Filter is one of the most widely used units in communication systems. It plays a very important role in signal acquisition, transmission and processing. In most cases, the performance of the filter is good or bad. It will have a decisive impact on the performance of the whole system. Therefore, with the continuous evolution of information science and technology, especially wireless communication technology. The function and performance of the filter are also improved. Because the N channel filter has direct clock frequency adjustable, it has a higher quality factor than the LC filter on CMOS chip. High linearity and perfect scaling technology. In order to achieve this purpose, this paper aims to study the N-channel filter technology and design the N-channel filter circuit with good performance. In this paper, we first study and analyze the circuit theory needed to design N-channel filter, at the same time, Hans Muller filter technology, center frequency conversion technology. On the basis of this, the design and simulation of the following three N-channel filters are completed. (1) A single-ended Hans Muller N-channel bandpass filter is studied. Hans Muller filter technology is used to realize capacitance multiplication, reduce chip area effectively, and realize double reduction of switch on-resistance. The simulation of 8-channel bandpass filter shows that the frequency adjustable range is 0.2 ~ 2.3GHz ~ (3) dB bandwidth is 5 MHz. A fully differential Hans Muller N-channel bandpass filter is designed with a gain of 17dBN 18.9dB. the input third-order crossover point is 8.7 dBmand the noise coefficient is 5.4dB. The bandwidth and order of the filter are increased by the difference of two N-channel filter networks with different center frequency. The center frequency transform technique is used at the same time. Two N-channel networks with different central frequencies are generated by one clock control. The center frequency of the two N-channel networks has the same offset relative to the clock frequency. The simulation results before the 8-channel bandpass filter show that the frequency adjustable range is 0.2 ~ 2.3GHz. The 3dB bandwidth is increased to 40MHz. A N-channel notch band-pass filter is studied with gain of 26dBN 27.8dB.The input third-order crossover point is 21.5dBm.The noise coefficient is 8.2dB. Using clock difference technique and gain enhancement technique, the circuit has the characteristics of simple structure and easy to realize the two kinds of filter. The pre-simulation of 8-channel filter is carried out. The post-simulation results show that the frequency adjustable range is 0.2 ~ 2.2GHz, and the gain of band-pass filter is 8.0dB ~ (-2) dB. The notch gain is -5 dB ~ 4 dB, the maximum rejection ratio is 22 dB, the input third-order crossover point is 13.3 dBmand the noise coefficient is 4.2 dB.
【學(xué)位授予單位】：廣西師范大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN713

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本文編號(hào)：1423619