Kommunikationssystem und -verfahren mit Verwendung einer reaktanzgesteuerten Gruppenantenne mit Richtcharakteristik

A communication system and methods utilizing a reactively controlled directive array

Système et procédés de communication utilisant un réseau d'antennes à directivité à contrôle réactif

Abstract

A reactively controlled directive antenna array that has a single central monopole or dipole as a radiating element excited directly by a feed system. A plurality of parasitic elements surround the radiating element and through changing the state of the parasitic impedance causing the antenna to be in an omni directional or beam pointing mode according to whether the parasitic elements are open circuited or short circuited. A computer modem and memory including stored programs control the antenna array in an omnidirectional or directive mode to locate, identify and communicate with nodes in a wireless communication network. A stored table is created in the memory indicating the antenna direction for communicating with each node in the network. Using the stored table, the computer initiates a communication sequence with a selected node, the sequence having the advantages of improved signal sensitivity and angular discrimination for wireless communication systems.

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