DVB_T数字电视信号发射机若干问题的研究
摘要
本文结合上海市广播科学研究所项目“DVB-T数字地面电视信号发射机国产化研制”，对数字电视信号发射系统中的若干问题做了系统的阐述，提出了部分模块的详细设计方案。其中主要对数字发射系统的一些关键技术如COFDM多载波调制，功放线性化技术以及线性功率放大器模块设计做了详细的分析。本论文的主要工作是设计大功率线性放大模块，该模块包括了线性功率放大器，控制电路，微带无源功率合成电路。在设计当中，采用了新型侧向扩散场效应管(LDMOS)，运用了先进的放大器结构—平衡结构及巴伦推挽结构，提出一种适合于甲乙类功率放大器的小信号设计方法，并利用这种方法，分别采用Motorola和Philips公司的LDMOS芯片成功设计出UHF射频功率放大模块。在设计的过程中，利用电磁场仿真软件Agilent ADS并结合厂家给出的推荐匹配电路进行设计，极大的缩短了研发周期，节约了开发成本。本文设计的驱动和末级功率放大器，增益及线性等指标与国外的同类产品相比较不相上下，并成功的应用于上海广播科学研究所地面数字电视发射机中，为我国数字电视发射系统的全面国产化铺平了道路。
In the dissertation, the design of an amplifier of DVB_T digital television transmitter is described and design scheme of every module is presented in detail. It mainly focuses on the analysis of the design of pre-amplifier module and final amplifier module.
The method of small signal design is presented, which can be applied to the design of A AB amplifier. With the method 100W pre-amplifier module and 270W final amplifier module are designed successfully with devices of MRF 373 and BLF861. Designing with the RF simulation tools helps to greatly reduce the developing circles and costs. The pre-amplifier and final amplifier are applied to digital television transmitter, which will accelerate indigenization of digital television transmitter.
In the dissertation, the design of an amplifier of DVB_T digital television transmitter is described and design scheme of every module is presented in detail. It mainly focuses on the analysis of the design of pre-amplifier module and final amplifier module.
The method of small signal design is presented, which can be applied to the design of A AB amplifier. With the method 100W pre-amplifier module and 270W final amplifier module are designed successfully with devices of MRF 373 and BLF861. Designing with the RF simulation tools helps to greatly reduce the developing circles and costs. The pre-amplifier and final amplifier are applied to digital television transmitter, which will accelerate indigenization of digital television transmitter.
引文
[1] 邓永红 《全面认识数字电视之现状及其发展趋势》 “中国有线电视导航”
[2] 《数字电视前端播出及存储系统统简介》 www.sbl.sh.sn
[3] 龚春红 刘娅 《高清晰度电视的发展现状与趋势》
[4] 陈琦岩 《数字电视：向左走还是向右走》
[5] 《数字电视地面广播传输系统标准探讨》 “广播电视网络技术”
[6] 李征帆，毛军发．《微波与高速电路理论》．上海交通大学出版社．2001年8月
[7] Reinhold Ludwig, Pavel Bretchko. 《RF Circuit Design:Theory and Applications》. 电子工业出版社．2002年5月
[8] 王蕴仪，苗敬峰，沈楚玉，陈顺生．《微波器件与电路》．江苏科学技术出版社．1981年3月
[9] Radmanesh，M．M，许希斌(译)．《射频与微波电子学》．电子工业出版社．2002年8月
[10] 高葆新，洪兴楠，陈兆武等．清华大学出版社．1988
[11] 黄宏嘉．《微波原理》．科学出版社．1963
[12] 林为干．《微波网络》．国防工业出版社．1978
[13] R.Bawer and J.J.Wolfe, "A printed circuit balun for use with a spiral antenna," IRE Trans.on Microwave Theory and Techniques,Vol.MTT-8,pp.319-325,May 1960
[14] Gordon J.Laughlin, "A new Impedance-Matched Wide-Band Balun and Magic Tee" Ieee Transations on Microwave Theory and Techniques, Vol.MTT-24, No.3, March 1976
[15] Tzu-hung Chen, "Broadband Monolithic Passive Baluns and Monlitic Double-Balance" Ieee Transations on Microwave Theory and Techniques, Vol.39, No.12, Dec. 1991
[16] S.A.Maas, "A Broadband Planar, Doubly Balanced Monolithic Ka-Band Diode Mixer," Ieee Trans.Microwave Theory and Techniques,Vol.41,pp.2330-2335,Dec.
[17] Mini-Circuits 97 RF/IF Designer's Handbook, Mini-Circuits Division of Scientific Components,1997
[18] Y.Nagata, "Linear amplifier Technique for Digital Mobile Communications,"IEEE Vehicular Technology Conference, 1989,pp. 159-164
[19] S.Narayanan, "Transistor Distortion Analysis Using Volterra Series Repretation,"The Bell System Technical Journal,May-June 1927,pp. 1485-1490
[20] A.Saleh and J.Salz, "Adaptive Linearization of Power Amplifiers in Digital Radio Systems,"Bell System Technical Journal, Vol.62,No.4, April 1983,pp. 1019-1033.
[21] S.Mass, Nonlinear Microwave Circuits, IEEE press,New York, 1988
[22] S.Mass, "Analysis and Optimization of Nonlinear Microwave Circuits by Volterra Series Analyisis," Microwave Journal, April 1990, pp.245-51.
[23] J.McRory and R.Johnston, "An RF Amplifier for Low Intermodulation Distortion," IEEE MTT-S Digest, 1994,pp. 1741-1744 《微波电路计算机辅助设计》
[24] 赵洪新．《一种基带预失真RF功率放大器线线性化技术的模型仿真与实验》．通信学报．2000
[25] 邹书跃．《自适应功放线性化技术的一种快速算法》．信号处理．2002
[26] 赵慧．《射频放大器的工作函数预失真线性化》．无线电工程．2001
[27] 刘文坚．《前馈高频功率放大器线性化的研究》．华南理工大学学报．
[28] H. J. Carlin and P. J. Crepeau, Theoretical Limitations on The Broadband Matching of Arbitrary Impedances, IRE Trans. on Circuit Theory, 1961, Vol. 8, No. 2, pp. 165.
[29] D. C. Fielder, Broad-Band Matching Between Load and Source Systems, IRE Trans. on Circuit Theory, 1961, Vol A, No.2, pp. 138-153.
[30] S. Plotkin and N. E. Nahi, On Limitations of Broad-Band Impedance Matching without Transformers, IRE Trans. on Circuit Theory, 1962, Vol.9, No.2, pp.125-132.
[31] M. R Wohlers, On Gain-Bandwidth Limitations for Physically Realizable Systems, IEEE Trans. on Circuit Theory, 1965, Vol.12, No.3, pp.329-333.
[32] W.H. Ku, Some Results in the Theory of Optimum Broad-Band Matching, IEEE Trans. on Circuit Theory, 1970, Vol. 17, No.3, pp.420-423.
[33] H.J. Carlin and R. C. Shen, Gain-Bandwidth Theory for Optimizing Transmission through。 Prescribed Lossless Two-Port, IEEE Trans. on Circuit Theory, 1972, Vol. 19, No. 1, pp.98—100.
[34] W.K. Chen, On the Minimum-Phase Reflection Coefficient in Broadband Equalizers, International Journal of Electronics, 1975, Vol.39, No.3, pp.357—360.
[2] 《数字电视前端播出及存储系统统简介》 www.sbl.sh.sn
[3] 龚春红 刘娅 《高清晰度电视的发展现状与趋势》
[4] 陈琦岩 《数字电视：向左走还是向右走》
[5] 《数字电视地面广播传输系统标准探讨》 “广播电视网络技术”
[6] 李征帆，毛军发．《微波与高速电路理论》．上海交通大学出版社．2001年8月
[7] Reinhold Ludwig, Pavel Bretchko. 《RF Circuit Design:Theory and Applications》. 电子工业出版社．2002年5月
[8] 王蕴仪，苗敬峰，沈楚玉，陈顺生．《微波器件与电路》．江苏科学技术出版社．1981年3月
[9] Radmanesh，M．M，许希斌(译)．《射频与微波电子学》．电子工业出版社．2002年8月
[10] 高葆新，洪兴楠，陈兆武等．清华大学出版社．1988
[11] 黄宏嘉．《微波原理》．科学出版社．1963
[12] 林为干．《微波网络》．国防工业出版社．1978
[13] R.Bawer and J.J.Wolfe, "A printed circuit balun for use with a spiral antenna," IRE Trans.on Microwave Theory and Techniques,Vol.MTT-8,pp.319-325,May 1960
[14] Gordon J.Laughlin, "A new Impedance-Matched Wide-Band Balun and Magic Tee" Ieee Transations on Microwave Theory and Techniques, Vol.MTT-24, No.3, March 1976
[15] Tzu-hung Chen, "Broadband Monolithic Passive Baluns and Monlitic Double-Balance" Ieee Transations on Microwave Theory and Techniques, Vol.39, No.12, Dec. 1991
[16] S.A.Maas, "A Broadband Planar, Doubly Balanced Monolithic Ka-Band Diode Mixer," Ieee Trans.Microwave Theory and Techniques,Vol.41,pp.2330-2335,Dec.
[17] Mini-Circuits 97 RF/IF Designer's Handbook, Mini-Circuits Division of Scientific Components,1997
[18] Y.Nagata, "Linear amplifier Technique for Digital Mobile Communications,"IEEE Vehicular Technology Conference, 1989,pp. 159-164
[19] S.Narayanan, "Transistor Distortion Analysis Using Volterra Series Repretation,"The Bell System Technical Journal,May-June 1927,pp. 1485-1490
[20] A.Saleh and J.Salz, "Adaptive Linearization of Power Amplifiers in Digital Radio Systems,"Bell System Technical Journal, Vol.62,No.4, April 1983,pp. 1019-1033.
[21] S.Mass, Nonlinear Microwave Circuits, IEEE press,New York, 1988
[22] S.Mass, "Analysis and Optimization of Nonlinear Microwave Circuits by Volterra Series Analyisis," Microwave Journal, April 1990, pp.245-51.
[23] J.McRory and R.Johnston, "An RF Amplifier for Low Intermodulation Distortion," IEEE MTT-S Digest, 1994,pp. 1741-1744 《微波电路计算机辅助设计》
[24] 赵洪新．《一种基带预失真RF功率放大器线线性化技术的模型仿真与实验》．通信学报．2000
[25] 邹书跃．《自适应功放线性化技术的一种快速算法》．信号处理．2002
[26] 赵慧．《射频放大器的工作函数预失真线性化》．无线电工程．2001
[27] 刘文坚．《前馈高频功率放大器线性化的研究》．华南理工大学学报．
[28] H. J. Carlin and P. J. Crepeau, Theoretical Limitations on The Broadband Matching of Arbitrary Impedances, IRE Trans. on Circuit Theory, 1961, Vol. 8, No. 2, pp. 165.
[29] D. C. Fielder, Broad-Band Matching Between Load and Source Systems, IRE Trans. on Circuit Theory, 1961, Vol A, No.2, pp. 138-153.
[30] S. Plotkin and N. E. Nahi, On Limitations of Broad-Band Impedance Matching without Transformers, IRE Trans. on Circuit Theory, 1962, Vol.9, No.2, pp.125-132.
[31] M. R Wohlers, On Gain-Bandwidth Limitations for Physically Realizable Systems, IEEE Trans. on Circuit Theory, 1965, Vol.12, No.3, pp.329-333.
[32] W.H. Ku, Some Results in the Theory of Optimum Broad-Band Matching, IEEE Trans. on Circuit Theory, 1970, Vol. 17, No.3, pp.420-423.
[33] H.J. Carlin and R. C. Shen, Gain-Bandwidth Theory for Optimizing Transmission through。 Prescribed Lossless Two-Port, IEEE Trans. on Circuit Theory, 1972, Vol. 19, No. 1, pp.98—100.
[34] W.K. Chen, On the Minimum-Phase Reflection Coefficient in Broadband Equalizers, International Journal of Electronics, 1975, Vol.39, No.3, pp.357—360.