TeTechs光纤耦合太赫兹测量套件是TeTechs公司为大学等科研机构量身定制的教学套件，非常适合给学生演示太赫兹的测量效果。学生可进行动手实验，并可以直观的观察
2016-08-10 16:17
（脑控技术丛书）太赫兹科学技术和应用
2020-03-06 08:02
（脑控技术丛书）太赫兹科学技术和应用
2020-03-03 13:21
在PC机当中，有一个CMOS RAM芯片，我们一般简称为CMOS，这个芯片的特征如下所示 1、包含一个实时钟和一个有128个存储单元的RAM存储器，关机后其内部的实时钟
2021-07-26 07:55
文章中，一个国际研究小组报告称，通过太赫兹复用器首次成功地传输了两个实时视频信号，总数据速率为50 Gb/s，比蜂窝通信网络大约快100倍。随着对无线数据传输速度和容量的需求越来越高，微波信号的传输
2018-08-31 15:58
Several industrial inspection techniques like X-ray scanning and microwave detection have been successfully used in various security applications over the last few decades. For instance, until recently X-ray scanning dominated nondestructive testing (NDT) methods in security screening applications. However, the hazards of ionization radiation combined with relatively high costs have limited widespread use of X-ray scanners in many applications where human health must not be jeopardized. The postal industry is no exception. Unmediated on-the-spot inspections by postal inspectors remain the most common and effective way to check parcels and envelopes. Quite often such inspection is carried out manually without any modern, automated equipment or computer-aided support.TeraSense Group, Inc has developed a brand-new solution for improving the safety at postal offices and eliminating health hazards for clients and postal workers. We offer the Terahertz High-Speed Imaging Scanner, which is based on our key innovative component: our Ultrafast Terahertz Imaging Camera with image acquisition rates up to 5,000 lines per second. Thanks to its highly sensitive sensor array, we can now bring health and safety measurements in the postal industry to a new level.TeraSense THz scanners have relatively low costs and offer extremely high operating speeds compared with X-ray and microwave techniques. That makes Terahertz waves a suitable and effective security screening solution for use in the postal industry.KEY SPECIFICATIONSTERAHERTZ IMAGINGFOR MAIL AND PARCEL SCREENINGADVANTAGES OF THE THz IMAGING SYSTEM• Powerful tool for prevention of terrorist attacks• Effective tool for revealing drug traffickers • Ability to detect undeclared items in a parcel or envelope• Extremely high throughput capacity due to high imaging speeds• Nondestructive and hazard-free inspection• Low-cost solutionTHz IMAGING CAMERA• Operating frequency: 100 GHz• Image acquisition rate: up to 5000 lines per second• Number of pixels (scalable): 256 x 1 • Field of view (coverage area): 384 x 3 mm2 • Pixel size: 1.5 x 3 mm• Spatial resolution: 3 mm• Fits conveyor belt running speed up to 15 m/s• Original software: TeraFast®Viewer • Interface: mini-USB• Power supply: 24V/20WTHz SOURCE: • Operating frequency: 100 GHz• Power per pixel: 140 µW• Reflection beam-forming optics• Protective isolator for enhanced stabilityHight Speed LinearTerahertz Scannerwith Type II THz SourceSystem set upAnother important application of the Terahertz Scanner is the detection of items that terrorists might send by mail, for example: Traffickers deliver drugs using ordinary mail services, and they often get away with it. Such “supply chains” may stay unrevealed for years because security inspection in postal facilities is performed manually and relies on the professionalism of postal inspectors. Unfortunately, manual inspection is often not enough.This situation can be changed entirely thanks to our Terahertz High-Speed Imaging Scanner — our new security screening system for postal offices. Now it is possible to check envelopes and parcels at industrial conveyor rates (up to 15m/s) and detect substances like the ones listed below: • Marijuana and similar plants• Cocaine• Liquid substancesPostal inspectors can detect such items in real time and on the spot while the conveyor belt is running. It works even if the amount of drugsin a parcel is just a few grams.It is essential that our scanner can detect various types of items inside parcels and envelopes without disturbing their integrity. It is important for postal inspectors to check if the content of the parcel matches the customs declaration. Our Terahertz Scanneris an optimal solution for this application. Terahertz waves are harmless not only to the human body but also to technology. This property will safely allow postal staff to ignore warning labels like “Caution, do not X-ray” and check such parcels like any others.The Terahertz High-Speed Imaging Scanner can be deployed in minutes and does not require any special qualifications to operate. In addition, our scanner is estimated to be cheaper than existing solutions on the market.THz images of sachets of tobacco (5 g, 3 g, 1 g) in envelopes5 g 3 g 1 gA dummy bomb in a boxTHz image of a sachetof flour in an envelopeDETECTION OF UNDECLARED ITEMS• Explosives and their components • Poison• Biological weapons (anthrax and others)TERRORISM PREVENTIONMAIL SCREENING FOR DRUG DETECTIONA sachet of tobacco (3 g)A sachet of flourSome of the most suitable applications of TeraSense THz scanners are listed below.THz image of a dummy bombin a box
2019-10-18 14:00
CMOS4000系列芯片手册
2019-03-26 19:06
周期与频率的关系：f=1/T。(其中f为频率，T为周期)。 物质在1s内完成周期性变化的次数叫做频率，常用f表示。为了纪念德国物理学家赫兹的贡献，人们把频率的单位命名为赫兹，简称“赫”，符号为Hz
2021-07-06 07:37
本文采用CMOS电路，它输入阻抗非常高，从而有条件使用小容量精度高的涤论电容或聚碳酸脂电容是很容易得到的。比较两者，后者体积更小。所以本电路最好采用聚碳酸脂电容。本电路采用一个2赫兹的震荡器。改变输出脉冲宽度就能改变充电速率，从而改变定时时间。这种定时器的确是非常
2021-05-20 07:35
十多年前，半导体设计与应用工程师在有了可行 CMOS 硅芯片时高兴得相互击掌庆祝，因为它可在 80% 的良率下实现 100uV 以下的放大器输入失调电压。当时，Allen Bradley、John
2022-11-21 07:45
