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- W1542810005 abstract "A broadband modified rat-race hybrid with around 30% bandwidth is presented in this paper. The hybrid was developed from 35 to 47 GHz bandwidth (centre frequency 41 GHz) using microstrip technology on Alumina substrate. The design uses CPWG-Microstrip transitions to measure the response of the circuit in a coplanar probes station. The measurements over the frequency bandwidth show a maximum amplitude imbalance of 0.5 dB, the phase variation is ± 5o, the isolation is better than 20 dB and the return loss is greater than 10 dB. Moreover, the circuit is planar and consists of a single layer, without requirements of metallic holes and bonding wires, so it is also a low-cost circuit. I. INTRODUCCION Los hibridos 180o se emplean en diversas aplicaciones en circuitos integrados de microondas, por ejemplo en circuitos donde resulta imprescindible dividir la potencia de entrada entre varias ramas, o bien combinar potencias procedentes de distintos origenes, ya sea en fase o contra fase de forma equilibrada entre sus ramas, es decir para sumar y restar senales. El acoplador hibrido 3 dB 180o en su configuracion mas tipica se muestra en la Fig. 1, la cual consiste en una red de cuatro accesos compuesta por tres lineas de longitud λ/4, y una de longitud 3λ/4, todas ellas de impedancia Z0·√2. Este hibrido es muy conocido y su estudio teorico puede encontrarse en [1]. A modo de resumen, en la ecuacion (1) se muestra la matriz de parametros S de dicho hibrido." @default.
- W1542810005 created "2016-06-24" @default.
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- W1542810005 date "2012-09-01" @default.
- W1542810005 modified "2023-10-01" @default.
- W1542810005 title "Híbrido 180º de banda ancha en tecnología Microstrip a 41 GHz" @default.
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