Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Jonathan L. Frasch"'
Publikováno v:
Progress In Electromagnetics Research M. 66:183-191
Publikováno v:
Progress In Electromagnetics Research. 157:31-47
A method for predicting the behavior of the permittivity and permeability of an engineered material by examining the measured S-parameters of a material sample is devised, assuming that the sample is lossless and symmetric. The S-parameter conditions
Publikováno v:
IEEE Microwave and Wireless Components Letters. 26:461-463
This work demonstrates the use of genetic algorithms (GA) to perform electromagnetic characterization of dielectric materials. The characterization process entails that the GA generates candidate solutions of the permittivity; these solutions are the
Publikováno v:
2016 10th European Conference on Antennas and Propagation (EuCAP).
This work demonstrates the use of genetic algorithms (GA) to perform the electromagnetic characterization of RF magnetic materials. The methodology entails minimizing a multiple objective cost function where the GA is attempting to minimize the diffe
Publikováno v:
2015 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium).
Leaky-wave antennas provide advantages including high directivity, their relative broadband nature and their ability to scan the principle beam with frequency that may be useful for various applications. They can also be designed with different guidi
Autor:
Jonathan L. Frasch, Edward J. Rothwell
Publikováno v:
2015 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium).
A self-structuring antenna (SSA) responds to changes in its operating environment by changing its electrical shape. Existing variants of the SSA show great promise for tuning across wide bands and for self-healing when subject to damage. However, the
Autor:
Jonathan L. Frasch, Edward J. Rothwell
Publikováno v:
2015 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium).
A variety of techniques have been developed for measuring the electromagnetic properties of homogeneous, isotropic materials. Commonly, a sample is excised and placed into a waveguide cross section, and the S-parameters of the system are measured. Th
Publikováno v:
2014 IEEE Antennas and Propagation Society International Symposium (APSURSI).