结果1 题目 If the working frequency of a mobile phone is 1800MHz and the size of the internal integrated circuit is micron level, the mobile phone circuit can be processed as a lumped parameter circuit. 相关知识点: 试题来源: 解析 正确 反馈 收藏 ...
PURPOSE: An apparatus for receiving an RF of a mobile phone terminal is provided to additionally insert a blocking RF filter to an existing RF receiving path, so that a developer can develop an RF receiving device of the terminal by easily searching an element for satisfying a single tone ...
各国手机制式(频率)(Mobilephonesystemsbycountry(frequency))===3g制式===td-scdma中国移动中国(cdma20001x:中国联通)中国(w/cdma中..
Mobile phone use has continued to increase across Australia, with developments in hardware, apps, and internet infrastructure allowing users to do more and more on their smartphones.
A dual-frequency antenna for mobile phone includes an integrally stamped thin metal conductor to function as a frequency-control structure of the antenna. An upper end of the stamped thin metal conductor is a curved wave coil and a lower end thereof is a connector having two hooks. The ...
Challenges and opportunities of mobile phone-based data collection : evidence from South Sudan Social AccountabilityThe proliferation of mobile phones in developing countries has generated a wave of interest in collecting high-frequency socioeconomic ... G Demombynes,P Gubbins,A Romeo - 《Policy Resear...
Mobile internet use via laptops in Great Britain 2019, by demographic American football participation levels among high schoolers in the U.S. 2012-2024 Alpine skiing participation among high school students in the U.S. 2012-2024 Number of TV households in the UK 2013-2023 ...
a.the ratio of the actual number of favourable events to the total possible number of events; often taken as an estimate of probability b.the proportion of the range of a random variable taking a given value or lying in a given interval ...
The only requirement is that the fading rate is not too fast (compared to the OFDMA symbol time), as instantaneous resource allocation is impractical in the presence of rapidly-varying transmission channels of mobile terminals. Other impairments include interference management and limited resources, ...
The widespread use of mobile phones has led to public concerns about the health effects associated with exposure to radiofrequency (RF) fields. The paramou... SS Qutob,V Chauhan,PV Bellier,... - 《Radiation Research》 被引量: 161发表: 2006年 Genetic damage in mobile phone users: some ...