Germanium on sapphire substrates for system on a chip

Germanium on sapphire (GeOS) is proposed for system on a chip applications. Sapphire substrates are demonstrated to exhibit lower rf losses and superior crosstalk suppression compared with oxidised silicon handle wafers. Inductors on sapphire also show higher quality factor and better frequency response than those manufactured on an SOI platform. GeOS substrates have been manufactured by wafer bonding. Bond strengths of greater than 2900 mJ m⁻² have been obtained. Thin GeOS has been achieved by He/H₂ ion cut processes. A self-aligned W gate process on Ge has been established with processing temperature limited to 400 °C. P channel MOSTs exhibit low threshold voltage and a carrier mobility of about 400 cm² V⁻¹ s⁻¹.     

基于MOST网络从节点的能量优化

分析了MOST网络的传输原理和特性,根据网络的管理和通知机制,设计了从节点自主休眠和主节点管理整体网络休眠的分布式电源管理方案,以及睡眠状态下节点和网络的唤醒机制,并利用MATLAB对网络功耗进行数学建模和分析。仿真中MOST网络在执行随机生成的相同任务序列后,基于分布式电源管理的网络系统总功耗小于原来超时策略下的系统总功耗,仿真证明了分布式电源管理策略的有效性。     

CAN／MOST网关的设计与实现

为解决车载CAN（Controller Area Network）网络和MOST（Media Oriented Systems Transport）网络间的数据共享问题,提出了一种CAN／MOST网关的设计方案。通过分析两种网络的网络模型,构建了CAN网络和MOST网络互联的核心技术——CAN／MOST网关的系统结构,并在此结构的基础上实现了基于单片机89S51的网关的硬件设计和软件流程。该网关完成了CAN网络和MOST网络的互联,使不同的车载网络设备能共享数据。     

Bulk-driven floating-gate and bulk-driven quasi-floating-gate techniques for low-voltage low-power analog circuits design

In this paper, novel non-conventional techniques,¹ named by the author of this paper “bulk-driven floating-gate (BD-FG)” MOS transistor (MOST) and “bulk-driven quasi-floating-gate (BD-QFG) MOST” for low-voltage (LV) low-power (LP) analog circuit design are presented. These novel techniques appear as a good solution to merge the advantages of floating-gate (FG) and quasi-floating-gate (QFG) with the advantages of bulk-driven (BD) technique and suppress their disadvantages. Consequently, the transconductance and transient frequency of BD-FG and BD-QFG MOSTs approach the conventional gate driven (GD) MOST values. Furthermore, a novel LV LP class AB second generation current conveyor based on BD-FG MOST is presented in this paper as an example. The supply voltage is only ±0.4 V with a rail-to-rail voltage swing capability and total power consumption of mere 10 μW. PSpice simulation results using the 0.18 μm P-well CMOS technology are included to confirm the attractive properties of these new techniques.     

基于车载MOST网络的低功耗设计

随着车载MOST网络中信息娱乐设备的不断增加,功耗也不断上升。通过对MOST网络协议的研究与分析,在MOST网络主控节点中加入PowerMaster模块,建立MOST网络电源管理模型,集中统筹管理MOST网络设备,在不降低MOST网络服务功能的前提下削减网络功耗。仿真实验与测试结果表明,该方法有效降低了MOST网络的功耗水平,达到了预期目标。     

GE MOST紧急停车系统在300kt/a尿素装置的应用

介绍GE MOST紧急停车系统在柳州化工股份有限公司300 kt/a尿素装置上的应用情况,详细阐述了GE MOST系统的硬件配置、软件功能和主要控制回路逻辑。     

Novel low-voltage ultra-low-power DVCC based on floating-gate folded cascode OTA

In this paper a novel low-voltage ultra-low-power differential voltage current conveyor (DVCC) based on folded cascode operational transconductance amplifier OTA with only one differential pairs floating-gate MOS transistor (FG-MOST) is presented. The main features of the proposed conveyor are: design simplicity; rail-to-rail input voltage swing capability at a low supply voltage of ±0.5 V; and ultra-low-power consumption of mere 10 μW. Thanks to these features, the proposed circuit could be successfully employed in a wide range of low-voltage ultra-low-power analog signal processing applications. Implementation of new multifunction frequency filter based on the proposed FG-DVCC is presented in this paper to take the advantages of the properties of the proposed circuit. PSpice simulation results using 0.18 μm CMOS technology are included as well to validate the functionality of the proposed circuit.     

油气微生物检测技术:理论、实践和应用前景

简述了微生物勘探技术（MOST+SSG）的原理和方法。指出：专性烃氧化菌对食物（碳源）的高度选择性决定了MOST技术烃检测结果的唯一性和重现性;全球MOST勘探,特别是岩性地层油气藏勘探的成功范例展现了地震勘探（2D/3D）和微生物勘探（MOST）相结合的综合勘探模式对于提高勘探成功率,降低勘探风险的重大价值。     

MOST网络协议在车辆上的应用

汽车网络的发展主要受汽车电子的驱动，未来车辆中大约需要20多种多媒体设备，这类网络要求很高的数据传输速率（250kbps-400Mbps）。由于具有低成本、抗干扰、高带宽、实时同步高质量通信等优点，MOST（Media Oriented Systems Transport）协议在车上网络技术应用的前景最为广阔。     

基于语音接口的MOST网络设备控制

MOST网络将成为汽车主干网络,而语音控制为汽车多媒体娱乐提供了便捷的人机接口,将两者结合具有良好的应用前景.在分析MOST网络设备控制及语音识别原理的基础上,提出了一种在MOST网络上构建人机语音接口的方法,并给出实现该方法的硬件组成和软件架构.通过小词汇量词库对该系统进行实验,实验结果表明,该方法达到了实际应用的要求.