Array antenna with irregular mesh and possible cold redundancy

Details Array antenna with irregular mesh and possible cold redundancy Array antenna with irregular mesh and possible cold redundancy

H - Electricity

01

Q

H01Q 3/26 (2006.01) H01Q 21/22 (2006.01)

Patent

CA 2631330

A transmit and/or receive array antenna comprises an array (R) of sub-arrays (SR) of at least one radiating element (ER) and control means for controlling the amplitude and/or the phase of the radio frequency signals to be transmitted or received in the form of waves by each of the sub-arrays (SR) so that they send or receive signals according to a chosen pattern. The sub- arrays (SR) comprise a mean number of radiating elements (ER) which increases from the centre of the array (R) towards its periphery, and are arranged with respect to one another in such a way as to constitute an irregular mesh offering pattern sidelobes of low intensity and a high gain in a favoured direction.

Une antenne réseau d'émission et/ou réception comprend un réseau (R) de sous-réseaux (SR) d'au moins un élément rayonnant (ER) et des moyens de contrôle chargés de contrôler l'amplitude et/ou la phase des signaux radiofréquences à transmettre ou reçus sous forme d'ondes par chacun des sous-réseaux (SR) afin qu'ils émettent ou reçoivent des signaux selon un diagramme choisi. Les sous-réseaux (SR) comprennent un nombre moyen d'éléments rayonnants (ER) qui croît du centre du réseau (R) vers sa périphérie, et sont agencés les uns par rapport aux autres de manière à constituer un maillage irrégulier offrant des lobes secondaires de diagramme de faible intensité et un gain élevé dans une direction privilégiée.

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