With the rapid expansion of wireless consumer products,there has been a con- siderable increase in the need for radio-frequency (RF) planning, link plan- ning, and propagation modeling.A network designer with no RF background may find himself/herself designing a wireless network. A wide array of RF planning software packages can provide some support, but there is no substi- tute for a fundamental understanding of the propagation process and the lim- itations of the models employed. Blind use of computer-aided design (CAD) programs with no understanding of the physical fundamentals underlying the process can be a recipe for disaster. Having witnessed the results of this approach, I hope to spare others this frustration.
标签： Introduction Propagation to RF
上传时间： 2020-05-27
上传用户：shancjb
The unguided transmission of information using electromagnetic waves at radio frequency (RF) is often referred to as wireless communications, the first demonstration of which took place at the end of the 19th cen- tury and is attributed to Hertz. The technology was, shortly thereafter, commercialised by, amongst others, Marconi in one of the first wire- less communication systems, i.e., wireless telegraphy. In the first half of the 20th century the technology was developed further to enable more than the mere transmission of Morse code. This first resulted in uni- directional radio broadcasting and several years later also in television broadcasting.
标签： Imperfections RF
上传时间： 2020-06-01
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： 2020-06-01
上传用户：shancjb
The multiple-input multiple-output (MIMO) technique provides higher bit rates and better reliability in wireless systems. The efficient design of RF transceivers has a vital impact on the implementation of this technique. This first book is com- pletely devoted to RF transceiver design for MIMO communications. The book covers the most recent research in practical design and applications and can be an important resource for graduate students, wireless designers, and practical engineers.
标签： Transceiver Design RF
上传时间： 2020-06-01
上传用户：shancjb
The phenomenon of electrostatic discharge (ESD) has been known for a long time, but recently a growing interest has been observed in ESD in radio frequency (RF) technology and ESD issues in RF applications.
标签： Technology Circuits ESD and RF
上传时间： 2020-06-05
上传用户：shancjb
中兴内部资料--射频RF板PCB工艺设计规范
上传时间： 2020-06-23
上传用户：lanmm123
ps制作的超酷功能滑块psd源文件，可用于视觉传达设计与UI课程平时作业！
上传时间： 2020-12-30
上传用户：
PCB抄板PS对图技巧，个人原创，普及抄板知识
上传时间： 2021-10-19
上传用户：20125101110
基于RF的门窗监控系统设计外文这是一份非常不错的资料，欢迎下载，希望对您有帮助！
上传时间： 2021-12-25
上传用户：20125101110
一种新颖的电子式PS压力传感器
标签： 压力传感器
上传时间： 2022-01-15
上传用户：20125101110
