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基于TSMC 0.18μm CMOS工艺,设计了一种低噪声、高增益的混频器.通过在吉尔伯特单元中的跨导级处引入噪声抵消技术以降低混频器的噪声;并且在开关管的源级增加电流注入电路的基础上并联一个电容与开关管共源节点处的寄生电容谐振,进一步降低混频器的噪声,增大电路的增益.仿真结果表明,在本振(LO)频率为2.395 GHz,射频(RF)频率为2.4GHz时,混频器的增益为14.2dB,双边带噪声系数为5.9dB,输入三阶交调点为-3.2dBm.混频器工作电压1.8V,直流电流为8mA. 相似文献
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Payam Heydari 《Analog Integrated Circuits and Signal Processing》2006,48(3):199-209
An analysis of high-frequency noise in RF active CMOS mixers including single-balanced and double-balanced architectures is
presented. The analysis investigates the contribution of non-white gate-induced noise to the output noise power as well as
the spot noise figure (NF) of the RF CMOS mixer. It accounts for the non-zero correlation between the gate-induced noise and
the channel’s thermal noise. The noise contribution of the RF transconductor and the switching pair to the output noise power
is studied. Experimental results verify the accuracy of the analytical model.
Payam Heydari (S’98–M’00) received the B.S. and M.S. degrees in electrical engineering from the Sharif University of Technology, in 1992,
1995, respectively. He received the Ph.D. degree in electrical engineering from the University of Southern California, in
2001.
During the summer of 1997, he was with Bell-Labs, Lucent Technologies, where he worked on noise analysis in deep submicrometer
very large-scale integrated (VLSI) circuits. During the summer of 1998, he was with IBM T. J. Watson Research Center, Yorktown
Heights, NY, where he worked on gradient-based optimization and sensitivity analysis of custom-integrated circuits. Since
August 2001, he has been an Assistant Professor of Electrical Engineering at the University of California, Irvine, where his
research interest is the design of high-speed analog, RF, and mixed-signal integrated circuits.
Dr. Heydari has received the 2005 National Science Foundation (NSF) CAREER Award, the 2005 IEEE Circuits and Systems Society
Darlington Award, the 2005 Henry Samueli School of Engineering Teaching Excellence Award, the Best Paper Award at the 2000
IEEE International Conference on Computer Design (ICCD), the 2000 Honorable Mention Award from the Department of EE-Systems
at the University of Southern California, and the 2001 Technical Excellence Award in the area of Electrical Engineering from
the Association of Professors and Scholars of Iranian Heritage (APSIH). He was recognized as the 2004 Outstanding Faculty
at the EECS Department of the University of California, Irvine. His name was included in the 2006 Who’s Who in America.
Dr. Heydari Professor Heydari has been the Associate Editor of IEEE TRANS. ON CIRCUITS AND SYSTEMS, I, since 2006. He currently
serves on the Technical Program Committees of International Symposium on Low-Power Electronics and Design (ISLPED), International
Symposium on Quality Electronic Design (ISQED), and the Local Arrangement Chair of the ISLPED conference. He was the Student
Design Contest Judge for the DAC/ISSCC Design Contest Award in 2003, the Technical Program Committee member of the IEEE Design
and Test in Europe (DATE) from 2003 to 2004, and International Symposium on Physical Design (ISPD) in 2003. 相似文献
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一种具有新型增益控制技术的CMOS宽带可变增益LNA 总被引:1,自引:0,他引:1
高速超宽带无线通信的多标准融合是未来射频器件的发展趋势,该文提出一种基于CMOS工艺、具有新型增益控制技术的宽带低噪声放大器(LNA),采用并联电阻反馈实现宽带输入匹配,并引入噪声消除技术来减小噪声以提高低噪声性能;输出带有新型6位数字可编程增益控制电路以实现可变增益。采用中芯国际0.13m RF CMOS工艺流片,芯片面积为0.76 mm2。测试结果表明LNA工作频段为1.1-1.8 GHz,最大增益为21.8 dB、最小增益8.2 dB,共7种增益模式。最小噪声系数为2.7 dB,典型的IIP3为-7 dBm。 相似文献
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CMOS混频器设计现状与进展 总被引:6,自引:1,他引:6
详细阐述了CMOS混频器设计技术的进展,着重介绍了CMOS混频器各项性能优化技术的现状与进展,探讨了各种技术的优缺点。最后,总结了CMOS混频器有关转换增益、线性度以及噪声系数的成果报道。 相似文献
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Nam-Jin Oh 《Microelectronics Journal》2008,39(12):1860-1866
This paper presents a low noise first down-conversion mixer with a notch filter for the heterodyne receiver. The notch filter connected to the output node of the mixer driver stage plays a role of image rejection at an image frequency, thereby suppressing the sideband image noise and improving the mixer noise performance. Targeted for 2.4 GHz industrial-scientific-medical band applications, a simple source-degenerated down-conversion single balanced mixer with the filter is implemented. The measurement results of the proposed down-conversion mixer shows about 3.0 dB improvement of single-side band noise figure, about 2.9 dB power conversion gain improvement, and 25 dB image suppression compared to those without the filter dissipating 4 mA from a 2.5 V supply voltage. 相似文献
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采用微带混合集成电路技术设计了一款W波段二次分谐波混频器.通过分析二级管封装结构引入的寄生参量,提出了一种减小二级管并联寄生电容的方法.为了避免在W波段使用传统分谐波混频器中普遍使用的过孔接地及侧边平行耦合微带线带通滤波器,提出了一种改进型分谐波混频器结构.测试结果表明混频器在本振频率为45 GHz,中频频率为2.4 GHz时单边带变频损耗最小,最小值为8 dB.射频频率在90 ~ 100 GHz测试频率范围内,变频损耗的测量值小于10.5 dB. 相似文献
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采用线性化技术改进的混频器结构提高了线性度.采用TSMC 0.18 μm RF CMOS模型进行了电路仿真.仿真结果:在电源电压为1.8 V时,输入三阶截断点(IIP3)为10.3 dBm,输入1dB压缩点(P-1dB)为-3.5 dBm,增益为9.2 dB,单边带噪声系数为17 dB. 相似文献
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This paper presents a design of a low power CMOS ultra-wideband (UWB) low noise amplifier (LNA) using a noise canceling technique with the TSMC 0.18 μm RF CMOS process. The proposed UWB LNA employs a current-reused structure to decrease the total power consumption instead of using a cascade stage. This structure spends the same DC current for operating two transistors simultaneously. The stagger-tuning technique, which was reported to achieve gain flatness in the required frequency, was adopted to have low and high resonance frequency points over the entire bandwidth from 3.1 to 10.6 GHz. The resonance points were set in 3 GHz and 10 GHz to provide enough gain flatness and return loss. In addition, the noise canceling technique was used to cancel the dominant noise source, which is generated by the first transistor. The simulation results show a flat gain (S21>10 dB) with a good input impedance matching less than –10 dB and a minimum noise figure of 2.9 dB over the entire band. The proposed UWB LNA consumed 15.2 mW from a 1.8 V power supply. 相似文献
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在多标准系统应用中,由于线性度和噪声的要求,使得混频器的设计难度很大。采用2次谐波注入结构的3阶失真抵消技术,设计了一种改善跨导级线性度的高线性CMOS混频器。在混频器开关级处引入LC滤波电路,抵消了开关级晶体管的2阶和3阶互调失真,进而优化了开关级的线性度。采用TSMC 0.13 μm CMOS工艺进行设计与仿真,并完成了版图设计与流片。较之传统的吉尔伯特混频器,该电路的输入3阶交调点IIP3增加了11.2 dBm,达到9.2 dBm的高线性度,对噪声系数、增益以及功耗造成的影响较小。 相似文献
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利用TSMC 0 .2 5 μmCMOS混合工艺 ,针对超外差结构的无线宽带收发器 ,实现了一个能够工作在 5 0~6 0 0MHz的中频调制器 ,并对该调制器进行了仿真和测试。由于该调制器在输出端采用了一个具有高可调增益范围而且鲁棒性能好的可变增益放大器 (VGA) ,从而使得该调制器具有超过 70dB的增益可调范围。测试结果表明 ,该调制器能够工作在 5 0~ 6 0 0MHz的频率上 ,输出功率为 - 81~ - 10dBm ,最小增益的输出噪声为 - 130dBm/ Hz,最大增益的输出P1dB点为 - 4 .3dBm ,在 3V的电源电压下 ,电流功耗为 32mA。 相似文献
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文中给出了一个应用于超宽带射频接收机中的全集成低噪声放大器,该低噪声放大器采用了电阻并联负反馈与源极退化电感技术的结合,为全差分结构,在Jazz0.18μm RF CMOS工艺下实现,芯片面积为1.08mm2,射频端ESD抗击穿电压为1.4kV。测试结果表明,在1.8V电源电压下,该LNA的工作频带为3.1~4.7GHz,功耗为14.9mW,噪声系数(NF)为1.91~3.24dB,输入三阶交调量(IIP3)为-8dBm。 相似文献
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本文介绍了一种应用于6-9 GHz超宽带系统的全集成差分CMOS射频前端电路设计。在该前端电路中应用了一种电阻负反馈形式的低噪声放大器和IQ两路合并结构的增益可变的折叠式正交混频器。芯片通过TSMC 0.13µm RF CMOS工艺流片,含ESD保护电路。经测试得该前端电路大电压增益为23~26dB,小电压增益为16~19dB;大增益下前端电路平均噪声系数为3.3-4.6dB,小增益下的带内输入三阶交调量(IIP3)为-12.6dBm。在1.2V电压下,消耗的总电流约为17mA。 相似文献
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Liu Yu Wang Guoyu 《电子科学学刊(英文版)》2007,24(1):95-99
I. Introduction Complementary Metal Oxide Semiconductor (CMOS) image sensor has been becoming in-creasingly significant in the field of solid image sensor. Compared with Charge-Coupled Device (CCD) image sensor, CMOS image sensor possesses many advantages, such as smaller size, more con-venient to be integrated with other devices, lower power consumption and cost, etc[1,2]. To date, CMOS image sensor is adopted in almost all mo-biles which can take pictures. In addition, CMOS image … 相似文献
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设计实现了一个具有温度补偿的宽带CMOS可变增益放大器,该可变增益放大器的核心电路由三级基于改进型Cherry-Hooper结构的可变增益单元级联而成,并通过一种温度系数增强的且可编程的偏置电路和增益控制电路对可变增益放大器的增益进行温度补偿。采用中芯国际0.13μm CMOS工艺流片,测试结果表明可变增益放大器的可变增益范围为-13~27dB,经过温度补偿后,在相同增益控制电压下其增益在0~75°C温度范围内的变化范围不超过3dB。可变增益放大器的3dB带宽为0.8~3GHz,输入1dB压缩点为-50~-21dBm,在1.2V电压下,功耗为21.6mW。 相似文献