Publication: Diseño de un divisor de potencia en tecnología Gap Waveguide y su aplicación a un array de ranuras
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2015-07
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2015-07-07
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Abstract
El presente trabajo estudia el desarrollo de un divisor de potencia en tecnología Gap Waveguide y su aplicación a un array de 4 ranuras realizados con el programa simulación CTS Microwave Studio.
Para comenzar el trabajo se han realizado varios modelos de onda completa de líneas de transmisión en tecnología Gap Waveguide, en particular nos hemos centrado en la variante microstrip de esta tecnología.
Pasando a las etapas, en primer lugar se ha realizado el diseño de un divisor de potencia para dos salidas que posteriormente se ha ampliado a cuatro.
Por otra parte se ha diseñado una antena de ranura como elemento radiante individual, para analizar sus parámetros de diseño y estudiar su respuesta básica frente a sus dimensiones y la terminación del circuito de alimentación. Mediante este proceso se ha conseguido una buena optimización del elemento y su alimentador.
Cuando se ha conseguido optimizar, se ha aplicado el modelo de la antena individual a un primer array compuesto por dos ranuras, uniendo el desarrollo de la primera parte con el de la segunda (divisor + antena de ranura). Esta implementación se ha analizado y modificado ligeramente hasta que se han conseguido unos buenos resultados para poder utilizarlo como partida del diseño final propuesto.
Para finalizar este trabajo, se duplica el tamaño del array de dos a cuatro ranuras reutilizando la red que se ha optimizado anteriormente, colocando una al lado de la otra y diseñando un nuevo divisor de mayor tamaño partiendo de los anteriores modelos ya optimizados para conéctalo todo.
El resultado final del trabajo tiene un buen funcionamiento. El array tiene una adaptación de -25db y un ancho de banda de 725Mhz. El lóbulo principal está orientado en dirección broadside con una desviación de 1°. En los aspectos negativos se destaca que tenemos un ancho de haz a -3db de 81.8° y unos lóbulos secundarios de 1dB, así como una elevada radiación trasera.
This project studies the development of a power divider in Gap Waveguide technology and its application to an array of 4 slots made with CTS Microwave Studio simulation program. To begin work there have been several models of full-wave transmission lines in Gap Waveguide technology, in particular we have focused on the microstrip variant of this technology. Passing stages, first we have designed a power divider for two outputs and later, we have been extended the model to four outputs. On the other hand it was designed an individual slot antenna as an individual radiating element to discuss its design parameters and study its basic response, its size and the termination of the supply circuit. This process has achieved a good optimization of the element and its feeder. When optimization has been achieved, it has been applied from the individual antenna pattern to a first array with two slots, joining the development of the first part with the second (slot antenna + divider). This implementation has been tested and slightly modified until it have achieved good results to use as starting point for the proposed final design. The array size of two slots doubles it to four to complete this work by reusing the network that previously had been optimized by placing one next to the other and a new larger divider is designed, based on previous optimized models to connect it all. The final result of the work has a good performance. The array has an adaptation of -25dB and a 725MHz. bandwidth. The main lobe is oriented in the broadside direction with a deviation of one degree. On the negative side we have a beam width of 81.8 ° in -3dB and 1dB side lobes, in addition, we have a high rear radiation.
This project studies the development of a power divider in Gap Waveguide technology and its application to an array of 4 slots made with CTS Microwave Studio simulation program. To begin work there have been several models of full-wave transmission lines in Gap Waveguide technology, in particular we have focused on the microstrip variant of this technology. Passing stages, first we have designed a power divider for two outputs and later, we have been extended the model to four outputs. On the other hand it was designed an individual slot antenna as an individual radiating element to discuss its design parameters and study its basic response, its size and the termination of the supply circuit. This process has achieved a good optimization of the element and its feeder. When optimization has been achieved, it has been applied from the individual antenna pattern to a first array with two slots, joining the development of the first part with the second (slot antenna + divider). This implementation has been tested and slightly modified until it have achieved good results to use as starting point for the proposed final design. The array size of two slots doubles it to four to complete this work by reusing the network that previously had been optimized by placing one next to the other and a new larger divider is designed, based on previous optimized models to connect it all. The final result of the work has a good performance. The array has an adaptation of -25dB and a 725MHz. bandwidth. The main lobe is oriented in the broadside direction with a deviation of one degree. On the negative side we have a beam width of 81.8 ° in -3dB and 1dB side lobes, in addition, we have a high rear radiation.
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Proceso de señales, Tecnología Gap Waveguide, Antenas, Transmisión digital, Signals processing, Gap Waveguide technology, Antennas, Digital transmission