基于标准SiGe BiCMOS工艺的宽带全差分光接收机的研制

发布时间：2018-05-24 18:14

本文选题：标准SiGe + BiCMOS　；参考：《天津大学》2016年博士论文

【摘要】：光通信技术正迅速将其应用领域扩展到互连系统中,而基于铜线的电互连逐渐被光纤所取代。硅基光电子技术从低价格和高集成度出发,引领着下一代光通信的发展趋势。光接收机作为光互连系统的核心模块之一,自然成为硅基光电子的研究热点方向。标准SiGe BiCMOS工艺除了具有低噪声和较好的频率特性之外,同时还具有较好的光电特性,因此成为硅基宽带光接收机设计的最理想工艺。很多国内外学者已经开始对基于标准SiGe BiCMOS工艺的光接收机进行了一些的研究,但其结果离商用化标准仍有一定差距。本文基于标准SiGe BiCMOS工艺对宽带光接收机系统进行了研究,主要进行了如下工作:1、基于IBM 7WL标准0.18μm SiGe BiCMOS工艺对DPD、PIN和HPT光电探测器进行了建模,分析了影响光电探测器响应度和带宽的因素,并流片实现。在850 nm波长的输入光照条件下,三种探测器的响应度分别能达到0.007 A/W,0.01 A/W和0.4 A/W。其中,HPT光电晶体管的性能已接近商用化标准。同时,提出了一种基于PIN结构的全差分光电探测器,可将单根光纤输出的光信号转换成一对全差分电流信号。2、利用标准0.18μm CMOS器件设计了一款集成cascode反馈型RGC输入级、π型匹配网路及一种新型米勒电容补偿技术的宽带跨阻放大器,测试结果为跨阻增益57 dBΩ,带宽8.2 GHz及静态功耗22 mW;利用SiGe HBT器件(截止频率60 GHz)设计了一款集成新型电容简并RGC输入级、π型匹配网路的宽带跨阻放大器,测试结果为跨阻增益61 dBΩ、带宽15 GHz及静态功耗32 mW。3、利用标准0.18μm CMOS器件设计了一款反比例缩放限幅放大器,增益30 dB、带宽5.9 GHz,同时设计一款交错式三阶有源反馈限幅放大器,增益44.4dB、带宽9.3 GHz;利用SiGe HBT器件设计了一款集成电容简并结构及Cherry Hooper结构的限幅放大器,增益46.4 dB,带宽20.5 GHz;利用CMOS器件设计了一款fT倍频缓冲级,增益3.7 dB,带宽17 GHz。4,利用标准0.18μm CMOS工艺设计了一款全差分光接收机,跨阻增益92.5dBΩ,带宽8.9 GHz,数据传输速率达到10 Gb/s;利用标准0.18μm SiGe BiCMOS工艺设计了一款的全差分光接收机,跨阻增益107 dBΩ,17 GHz,数据传输速率达到20 Gb/s。
[Abstract]:Optical communication technology is rapidly expanding its application to interconnection systems, and electrical interconnection based on copper wire is gradually replaced by optical fiber. Silicon-based optoelectronics technology leads the development trend of next generation optical communication from low price and high integration level. As one of the core modules of optical interconnection system, optical receiver has naturally become a hot research direction of silicon based optoelectronics. The standard SiGe BiCMOS process not only has low noise and better frequency characteristics, but also has good photoelectric characteristics, so it has become the most ideal process for the design of silicon-based wideband optical receiver. Many scholars at home and abroad have done some research on the optical receiver based on standard SiGe BiCMOS process, but the results are still far from the commercial standard. In this paper, the broadband optical receiver system is studied based on the standard SiGe BiCMOS process. The main work is as follows: 1. Based on the IBM 7WL standard 0.18 渭 m SiGe BiCMOS process, the DPD-PIN and HPT photodetectors are modeled. The factors affecting the responsivity and bandwidth of the photodetector are analyzed. Under the input illumination at 850nm, the responsivity of the three detectors can reach 0.007 A / W 0.01 A / W and 0.4 A / W respectively. The performance of HPT phototransistor is close to the commercial standard. At the same time, a fully differential photodetector based on PIN structure is proposed. The optical signal output from a single fiber can be converted into a pair of fully differential current signals. A wideband transresistance amplifier integrating cascode feedback RGC input stage, 蟺 matching network and a novel Hans Muller capacitor compensation technique is designed by using a standard 0.18 渭 m CMOS device. The test results show that the transresistance gain is 57 dB 惟, the bandwidth is 8.2 GHz and the static power consumption is 22 MW. A novel capacitive degenerate RGC input stage, 蟺 type matched network wideband transresistance amplifier is designed by using the SiGe HBT device (cutoff frequency 60 GHz). The test results show that the gain is 61 dB 惟, the bandwidth is 15 GHz and the static power consumption is 32 MW. An inverse scaling limiting amplifier with 30 dB gain and 5.9 GHz bandwidth is designed by using the standard 0.18 渭 m CMOS device. An interleaved third order active feedback limiting amplifier is also designed. The gain is 44.4 dB, the bandwidth is 9.3 GHz, a limiting amplifier with an integrated capacitance degenerate structure and Cherry Hooper structure is designed by using SiGe HBT device, the gain is 46.4 dB, the bandwidth is 20.5 GHz, and a FT double frequency buffer level is designed by using the CMOS device. Gain 3.7 dB, bandwidth 17 GHz 路4, using standard 0.18 渭 m CMOS process to design a fully differential optical receiver, with transresistive gain 92.5dB 惟, bandwidth 8.9 GHz, data transmission rate up to 10 GB / s. A fully differential optical receiver is designed using standard 0.18 渭 m SiGe BiCMOS process. The transresistance gain is 107 dB 惟 ~ (17) GHz and the data transmission rate is 20 GB / s.
【学位授予单位】：天津大学
【学位级别】：博士
【学位授予年份】：2016
【分类号】：TN929.1;TN851

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