GSM/DCS/UMTS Planar Medium Gain Outdoor Anntena

2006 ◽  
Author(s):  
Slawomir Gruszczynski ◽  
Krzysztof Wincza
Keyword(s):  
Planar Medium

scholarly journals Input Parallel Output Series Structure of Planar Medium Frequency Transformers for 200 kW Power Converter: Model and Parameters Evaluation

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1450
Author(s):  
Alessandro La Ganga ◽  
Roberto Re ◽  
Paolo Guglielmi
Keyword(s):  
Electric Vehicles ◽  
High Performance ◽  
Power Converter ◽  
Electrical Model ◽  
Solid State Transformer ◽  
Medium Frequency ◽  
Analytical Treatment ◽  
Transformer Model ◽  
Planar Medium ◽  
Parallel Output

Nowadays, the demand for high power converters for DC applications, such as renewable sources or ultra-fast chargers for electric vehicles, is constantly growing. Galvanic isolation is mandatory in most of these applications. In this context, the Solid State Transformer (SST) converter plays a fundamental role. The adoption of the Medium Frequency Transformers (MFT) guarantees galvanic isolation in addition to high performance in reduced size. In the present paper, a multi MFT structure is proposed as a solution to improve the power density and the modularity of the system. Starting from 20kW planar transformer model, experimentally validated, a multi-transformer structure is analyzed. After an analytical treatment of the Input Parallel Output Series (IPOS) structure, an equivalent electrical model of a 200kW IPOS (made by 10 MFTs) is introduced. The model is validated by experimental measurements and tests.

Solidification of Binary Mixture in a Finite Planar Medium: Saline Water

1985 ◽  
Vol 107 (4) ◽  
pp. 964-966 ◽  
Author(s):  
H. Kehtarnavaz ◽  
Y. Bayazitoglu
Keyword(s):  
Binary Mixture ◽  
Saline Water ◽  
Planar Medium

Nonparaxial diffraction-limited propagation of light in a graded-index planar medium with a hyperbolic secant refractive-index profile

2000 ◽  
Vol 39 (13) ◽  
pp. 2145 ◽  
Author(s):  
Carlos Gómez-Reino ◽  
María Victoria Pérez ◽  
Carmen Bao ◽  
María Teresa Flores-Arias ◽  
Silvia Vidal ◽  
...  
Keyword(s):  
Refractive Index ◽  
Refractive Index Profile ◽  
Index Profile ◽  
Graded Index ◽  
Propagation Of Light ◽  
Planar Medium
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