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A three-stage 60-GHz power amplifier was implemented in a 65 nm CMOS technology. High-quality-factor slow-wave coplanar waveguides were used for input, output and inter-stage matching networks in order to improve the performance. In Class-A operation, the power amplifier exhibits a measured maximum linear power gain G of 18.3 dB at 55 GHz, with a 3-dB bandwidth of 8.5 GHz. The measured 1-dB output...
For the problem that structural parameters of inverted pendulum can affect control performance, by pole placement method and dealing input signal system state expression is obtained. By means of analyzing of structure for state expression, the direct proportion between state and initial value is obtained. For the given control strategy, the maximal initial angle under which the inverted pendulum system...
In some sense, news is probably never free from the agencies' subjective valuation and external forces such as owners and advertisers. As a result, the perspective of news content may be biased. To clarify such a bias, we propose a novel method to extract characteristic descriptions on a certain entity (person, location, organization, etc.) in articles of a news agency. For a given entity, a description...
Constrained by the interior properties of underwater acoustic channels such as limited bandwidth, time-varying multipath propagation, and large propagation delay, the design of multiple access (MAC) protocols for underwater acoustic sensor networks (UWSN) poses significant challenges. Existing MAC protocols for UWSNs exhibit very low performance in channel utilization, throughput and end-to-end delay,...
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