Combination of loosely coupled and and compactly coupled integration of CAD tools and their applications in SAW devices design and fabrication

Author(s):  
Peigang Li ◽  
Jiaqin Zhang ◽  
Yuquan Hao
Author(s):  
Kemining W. Yeh ◽  
Richard S. Muller ◽  
Wei-Kuo Wu ◽  
Jack Washburn

Considerable and continuing interest has been shown in the thin film transducer fabrication for surface acoustic waves (SAW) in the past few years. Due to the high degree of miniaturization, compatibility with silicon integrated circuit technology, simplicity and ease of design, this new technology has played an important role in the design of new devices for communications and signal processing. Among the commonly used piezoelectric thin films, ZnO generally yields superior electromechanical properties and is expected to play a leading role in the development of SAW devices.


2018 ◽  
Vol 73 (4) ◽  
pp. 491-503 ◽  
Author(s):  
Matthias Spitzmuller ◽  
Guihyun Park

2003 ◽  
Author(s):  
John Rushby ◽  
Dawn X. Song ◽  
Jonathan K. Millen ◽  
Harald Rueb ◽  
Veronique Cortier
Keyword(s):  

Author(s):  
Michael Zürn

In this chapter, authority is developed as key concept for analyzing the global governance system. Max Weber’s foundational treatment is used to capture the paradox involved in the notion of “voluntary subordination.” Building on this foundation, the concept of reflexive authority is elaborated in contrast to two other concepts that have prevailed in international relations so far. The argument is laid out against the background of the global governance context, one in which the authority holders are in many respects weaker than most state actors. Two types of reflexive authority are identified: epistemic and political authority. Finally, the interplay between different authorities in global governance is analyzed to identify the major features of the global governance system. It is—to put it in the shortest possible form—a system of only loosely coupled spheres of authorities that is not coordinated by a meta-authority and lacks a proper separation of powers.


Author(s):  
E. Faghand ◽  
S. Karimian ◽  
E. Mehrshahi ◽  
N. Karimian

Abstract A new simple computational tool is proposed for the synthesis of multi-section coupled-line filters based on combined modified planar circuit method (MPCM) and transmission line method (TLM) analysis, referred to as MPCM-TLM. Due to its fundamentally simple architecture, the presented tool offers significantly faster optimization of coupled-line filters – for exactly the same initial simulation set-up – than other costly commercially-available tools, giving equally reliable results. Validity and accuracy of the proposed tool have been verified through the design of 3rd, 5th, and 7th order coupled-line filters and comparative analysis between results obtained from the proposed approach and the high-frequency structure simulator. A remarkable 99% time reduction in the analysis is recorded in the case of 7th order filter using the proposed tool, for almost identical results to HFSS. Therefore, it can be confidently claimed that the proposed technique can be used as a reliable alternative to existing complex, costly, processor-intensive CAD tools.


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