A comparison of state-of-the-art efficiency enhancement techniques of fully integrated CMOS power amplifiers for handset LTE applications

St Stephen's Hospital in Hervey Bay, Queensland, Australia, is a new 96 bed state of the art digital hospital that opened on a greenfield site on 13 October 2014. The eHealth project was responsible for providing a fully integrated electronic medical record. The authors explore the unique challenges presented by the project and the solutions deployed. Key components related to the success of the project are identified. The results of the intense two and half year project timeline culminated in a successful go-live and certification as the first hospital in Australia to achieve Stage 6 HIMSS designation.

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Dual-band impedance transformation networks for integrated power amplifiers

International Journal of Microwave and Wireless Technologies ◽

10.1017/s1759078714001391 ◽

2014 ◽

Vol 8 (1) ◽

pp. 1-7 ◽

Cited By ~ 2

Author(s):

Robert Wolf ◽

Niko Joram ◽

Stefan Schumann ◽

Frank Ellinger

Keyword(s):

Output Power ◽

Power Amplifiers ◽

Design Procedure ◽

Dual Band ◽

Analysis Method ◽

Large Signal ◽

Fully Integrated ◽

Power Added Efficiency ◽

Relative Bandwidth ◽

Measurement Results

This paper shows that the two most common impedance transformation networks for power amplifiers (PAs) can be designed to achieve optimum transformation at two frequencies. Hence, a larger bandwidth for the required impedance transformation ratio is achieved. A design procedure is proposed, which takes imperfections like losses into account. Furthermore, an analysis method is presented to estimate the maximum uncompressed output power of a PA with respect to frequency. Based on these results, a fully integrated PA with a dual-band impedance transformation network is designed and its functionality is proven by large signal measurement results. The amplifier covers the frequency band from 450 MHz to 1.2 GHz (3 dB bandwidth of the output power and efficiency), corresponding to a relative bandwidth of more than 100%. It delivers 23.7 dBm output power in the 1 dB compression point, having a power-added efficiency of 33%.

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Regulatory Issues of Digital I&C System in Lungmen Project

12th International Conference on Nuclear Engineering, Volume 2 ◽

10.1115/icone12-49280 ◽

2004 ◽

Cited By ~ 1

Author(s):

C. F. Chuang ◽

H. P. Chou

Keyword(s):

Nuclear Power ◽

State Of The Art ◽

Lessons Learned ◽

Digital Design ◽

Regulatory Requirements ◽

Power Station ◽

Fully Integrated ◽

Regulatory Issues ◽

Under Construction ◽

And Control

The Lungmen Nuclear Power Station (LNPS) is currently under construction in Taiwan, which consists of two advanced boiling water reactor (ABWR) units. The instrumentation and control (I&C) systems of the LNPS are based on the state-of-the-art modernized fully integrated digital design. This paper presents regulatory overviews, regulatory requirements, current major regulatory issues, as well as the areas of regulatory concerns and the lessons learned on the digital I&C systems in the Lungmen Project.

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