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The support vector regression (SVR) framework is proposed as the basis for an echo correction technique. Its generalization capabilities in input-output knowledge discovery make the method suitable to solve the problem of the unwanted reflections in measurement systems and to recover the real values of the antenna under test. Experimental validation is also presented to show the efficiency of the...
A three port triple band aperture coupled microstrip antenna has been designed, manufactured and measured. Effective impedance matching has been achieved in desired bands of operation in good agreement with the simulated results.
A transmitting polarisation agile antenna based on injection locked oscillators has been presented. This phase shifting circuitry presents advantageous properties, such as relatively high power, ease of control and continuous phase shift range. A prototype of the system has been manufactured, providing a continuous range of polarisation variation including two linear and two circular polarisations.
In this paper, we show how the CBFM can be nested to generate multilevel characteristic basis functions on large blocks in a very efficient way. This technique, which is a rather natural extension to the conventional CBFM, results in a high compression rate and, therefore, the size of the final matrix in the method of moments (MoM) is reduced considerably. Once this reduced matrix has been factorized,...
This paper describes the generation process of nested characteristic basis functions. These basis functions, which are generated by a recursive application of the conventional characteristic basis function method, enable a much higher compression of the reduced impedance matrix than the conventional CBFM. Several RCS computations are carried out to illustrate the performance and the accuracy of the...
This paper identifies some of the issues associated with the parallel implementation of the multilevel characteristic basis function method (ML-CBFM). We describe the major characteristics of the ML-CBFM in order to explain how it can be parallelized. We present efficient schemes for the parallelization of each stage that are tailored for distributed computing. Several examples are shown to validate...
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