This book is intended to help electric power and telephone company personnel and individuals interested in properly protecting critical tele communications circuits and Equipment located in high voltage (HV) environments and to improve service reliability while maintaining safe working conditions. Critical telecommunications circuits are often located in HV environments such as electric utility power plants, substations, cell sites on power towers, and standalone telecommuni cations facilities such as 911 call centers and mountaintop telecom munications sites.
标签： Protection Voltage High
上传时间： 2020-05-27
上传用户：shancjb
Microwave radio network design is a subset of activities that constitute the overall transmission network design. Transmission networks are sometimes called transport networks, access networks, or connectivity networks. For many wireless carriers, microwave is becoming a popu- lar preference over wireline (leased lines) transport for many reasons, especially as microwave radio Equipment costs decrease and installation becomes simpler. Low monthly operating costs can undercut those of typical single (and especially multiple) T1/E1 expenses, proving it to be more economical over the long term—usually two to four years. Network operators also like the fact that they can own and control microwave radio networks instead of relying on other service providers for network components.
标签： Transmission Microwave Networks
上传时间： 2020-05-27
上传用户：shancjb
An understanding of the policies, regulations, standards and techniques of radio spectrum management is useful to those who manage and administrate it, to operators, to Equipment providers and to the users of wireless communication (i.e., all of us). For many years the author has been deeply involved in ruling the RF spectrum at the national, regional and global levels. The book is based on the professional experience of the author, his academic courses, presenta- tions and tutorials in five continents. The book reflects this legacy and will be of use to engineers, lawyers and economists, who serve the global industry of the wireless world; in it they may find solutions to the problems they frequently encounter.
标签： Management Spectrum Radio
上传时间： 2020-05-31
上传用户：shancjb
The market for cellular phones and wireless data transmission Equipment has changed dramatically since the late 1970s when cellular phones were first introduced and the late 1980s when wireless data Equipment became available. As would be expected, duringthistime RF test requirements and RF test Equipment has changed dramatically.
标签： Measurements Cellular Phones for RF
上传时间： 2020-05-31
上传用户：shancjb
When thinking about mobile radio engineers there is a tendency to assume that the engineering function relates solely to the technical aspects of the network, such as the Equipment design or the network design. That is certainly a key part of the role of a mobile radio engineer. However,increasinglyengineersarerequiredtointeractwithprofession- als from other divisions. The “complete wireless professional” should know about mobile networks; fixed networks; other types of mobile systems; regulatory and government policy; the requirements of the users; and financial, legal, and marketing issues.
标签： Communications Complete Wireless The
上传时间： 2020-06-01
上传用户：shancjb
When thinking about mobile radio engineers there is a tendency to assume that the engineering function relates solely to the technical aspects of the network, such as the Equipment design or the network design. That is certainly a key part of the role of a mobile radio engineer. However,increasinglyengineersarerequiredtointeractwithprofession- als from other divisions.
标签： Communications Professional Complete Wireless The
上传时间： 2020-06-01
上传用户：shancjb
The need to develop reliable microelectronic devices capable of operating at high speeds with complex functionality requires a better understanding of the factors that govern the thermal performance of electronics. With an increased demand on system reliability and performance combined with miniaturization of the devices, thermal consideration has become a crucial factor in the design of elec- tronic packages, from chip to system levels.
标签： Telecommunications Management Equipment Thermal of
上传时间： 2020-06-01
上传用户：shancjb
The Home Gateway Initiative (HGI) is a non-profit making organization which publishes guidelines, requirements documents, white papers, vision papers, test plans and other documents concerning broadband Equipment and services which are deployed in the home.
标签： Evaluation Discussion Framework Document KPI
上传时间： 2020-06-06
上传用户：shancjb
The solid high-polymer-film-type fuel cell (PEM-FC) system is used as the power supply Equipment for transportation and replaces an internal combustion engine. A reduction of the environmental load is expected through the cogeneration system’s (CGS) use of the PEM-FC system as a distributed power supply to individual houses, apartments, and so forth [1–3]. The growing use of distributed power systems, such as fuel cells, the reduction of power-transmission losses, and an increase of waste heat recovery are expected. Therefore, the reduction of carbon- dioxide emission is also expected as compared to conventional energy supply methods using commercial electric power.
标签： Micro-grids Fuel Cell
上传时间： 2020-06-06
上传用户：shancjb
The first edition as well as its forerunner of Kuffel and Abdullah published in 1970 and their translations into Japanese and Chinese languages have enjoyed wide international acceptance as basic textbooks in teaching senior under- graduate and postgraduate courses in High-Voltage Engineering. Both texts have also been extensively used by practising engineers engaged in the design and operation of high-voltage Equipment. Over the years the authors have received numerous comments from the text’s users with helpful suggestions for improvements. These have been incorporated in the present edition. Major revisions and expansion of several chapters have been made to update the continued progress and developments in high-voltage engineering over the past two decades.
标签： Engineering Voltage High
上传时间： 2020-06-06
上传用户：shancjb
