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A 0.1–1.2 GHz power amplifier using 0.18-µm CMOS technology is presented with a small chip area. With 3.3V supply, the measurement results in this band indicated that the gain is better than 20 dB, the S11 and S22 is less than − 18 dB and −10 dB, respectively. The saturated output power is 20.5 dBm and 19.5 dBm at 433 MHz and 900 MHz with the corresponding PAE of 27% and 19.5%, respectively. The chip...
With the development of SNS(social network service), social network has become more and more important. The problem of how to discover users' (including the Internet and the telecommunication network) social network from users' interaction detail between each other starts to be the focus problem of researchers. Basing on the analysis of telecommunication call data, this paper studied how CDRs(Call...
As the Internet consists of a large number of nodes, measuring the whole Chinese Mainland is a time-consuming and demanding task. This paper addresses this issue by tactically choosing small-scale test sources and target IP address set and making a survey of Internet physical properties in central cities and second-tier cities. The research is focused on Internet diameter, degree distribution and...
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