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SISTEMAS DE RECEPCION TERRENAL
- ANTENAS TV -
Alumno:
Curso: Electricidad - Electrónica (FP)
Instituto:
Una instalación de recepción de TV terrenal es el conjunto de dispositivos mecánicos y electrónicos encargados de recibir la señal de televisión y transmitirla al receptor en óptimas condiciones. La calidad de la imagen y el sonido en el televisor, dependen fundamentalmente de esta instalación. Uno de los componentes de dicha instalación, son las antenas, a continuación describiremos varios tipos de ellas:
F.M.
Antenas dimensionadas para las bandas de radio. Omnidireccionales
o directivas. Permiten su instalación en mástiles de hasta 60 mm de diámetro.
Banda I monocanal
Directivas diseñadas para la recepción de un solo canal de Banda I.
Banda III bicanal
Antenas sencillas de gama completa en pares de canales y número de
elementos.
GAMA DE PRODUC
Mixtas
Antenas que cubren toda la UHF y Banda III.
U.H.F. gama V
Antenas de elevada ganancia, construidas con doble array de elementos y dipolo yagui.
U.H.F. panel
Estructura de un número par de dipolos (2 ó 4) de tal forma que se suman los efectos de los dipolos consiguiéndose una antena de ganancia media y
un buen ancho de banda.
U.H.F. gama Pro
Antenas de triple array angular de gran robustez, construidas con elementos insertados. Facilidad de montaje gracias al ensamblaje rápido de reflector y utilización de palomillas de apriete manual.
Ref.1083
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Enviado por: 5hogo Idioma: castellanoPaís: España