%0 Journal Article 
%A Lozano Guerrero, Antonio José
%A Clemente Fernández, Francisco Javier
%A Monzó Cabrera, Juan
%A Pedreño Molina, Juan Luis
%A Díaz Morcillo, Alejandro Benedicto
%T Precise evaluation of coaxial to waveguide transitions by means of inverse techniques
%D 2010
%@ 0018-9480
%U http://hdl.handle.net/10317/1411
%X In this paper, a new two-tier inverse characterization
technique for coaxial to waveguide transition evaluation is
presented and properly validated. The transition is characterized
by estimating its scattering parameters and a cascade procedure
is employed in order to compare simulations and measurements
during the unterminating procedure. In contrast to other unterminating
methods there are no restrictions concerning the
number and type of standards and two transitions are simultaneously
characterized. Additionally, genetic algorithms and the
gradient descent method are used for error minimization during
the unterminating stage. The accuracy of this two-tier inverse
technique is evaluated as a function of the employed standards and
the obtained results are compared to those provided by different
well-known calibration algorithms. Results show that it is possible
to properly characterize the coaxial to waveguide transition in a
very flexible and accurate way.
%K Teoría de la Señal y las Comunicaciones
%K Transición coaxial de guía de onda
%K Medida inversa
%K Calibración de dos niveles
%K Coaxial to waveguide transitions
%K Inverse measurement
%K Two-tier calibration
%K Algoritmos genéticos (AG)
%K Genetic Algorithm (GA)
%~ GOEDOC, SUB GOETTINGEN