A New Small-Signal Modelling Approach for Analyzing HEMTs over a Broad Frequency Range

2019 ◽  
Author(s):  
Amirreza Ghadimi Avval ◽  
Samir M. El-Ghazaly
Keyword(s):  
Small Signal ◽  
Frequency Range ◽  
Broad Frequency Range ◽  
Signal Modelling ◽  
Modelling Approach

Design of a Variable Thickness Plate to Focus Bending Waves

2012 ◽  
Author(s):  
Noah H. Schiller ◽  
Sz-Chin Steven Lin ◽  
Randolph H. Cabell ◽  
Tony Jun Huang
Keyword(s):  
Numerical Simulations ◽  
Thin Plate ◽  
Traveling Waves ◽  
Variable Thickness ◽  
Focal Point ◽  
Frequency Range ◽  
Additional Energy ◽  
Broad Frequency Range ◽  
Bending Waves ◽  
Energy Dissipated

This paper describes the design of a thin plate whose thickness is tailored in order to focus bending waves to a desired location on the plate. Focusing is achieved by smoothly varying the thickness of the plate to create a type of lens, which focuses structure-borne energy. Damping treatment can then be positioned at the focal point to efficiently dissipate energy with a minimum amount of treatment. Numerical simulations of both bounded and unbounded plates show that the design is effective over a broad frequency range, focusing traveling waves to the same region of the plate regardless of frequency. This paper also quantifies the additional energy dissipated by local damping treatment installed on a variable thickness plate relative to a uniform plate.

Small-Signal Modelling and Design Validation of PV-Controllers With INC-MPPT Using CHIL

2019 ◽  
Vol 34 (1) ◽  
pp. 361-371 ◽  
Author(s):  
Mandip Pokharel ◽  
Avishek Ghosh ◽  
Carl Ngai Man Ho
Keyword(s):  
Small Signal ◽  
Design Validation ◽  
Signal Modelling

scholarly journals Extraction and verification of the small-signal model for InP DHBTs in the 0.2–325 GHz frequency range

2018 ◽  
Vol 15 (13) ◽  
pp. 20180244-20180244 ◽  
Author(s):  
Wenyong Zhou ◽  
Lingling Sun ◽  
Jun Liu ◽  
Zhanfei Chen ◽  
Guodong Su ◽  
...  
Keyword(s):  
Small Signal ◽  
Frequency Range ◽  
Signal Model ◽  
Small Signal Model
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