Antena Impresa con Escaneo Electrónico en Sistemas Embarcados para Comunicaciones por Satélite en Banda X

摘要

A broadband circularly polarized and electronically steering antenna for satellite communication in X band is presented. The antenna operates with Left Hand Circular Polarization in Reception band (7.25-7.75 GHz) and Right Hand Circular Polarization in Transmission band (7.9-8.4 GHz). The key element is a resonant double stacked patch, which is fed by a 90º branch-line coupler to obtain the desired circular polarizations (RHCP or LHCP) and ensures adequate port coupling isolation. The arrangement features and the compactness are required for airborne antenna arrays. The design procedure of the antenna, able to get an electronically steering direction, are outlined