Adjustable antenna feed network with integrated phase shifter

Details Adjustable antenna feed network with integrated phase shifter Adjustable antenna feed network with integrated phase shifter

H - Electricity

01

Q

H01Q 3/32 (2006.01) H01Q 1/24 (2006.01) H01Q 21/06 (2006.01)

Patent

CA 2457913

A device for feeding signals between a common line (10) and two or more ports (20-28). The device including a branched network of feedlines (1-18) coupling the common line with the ports. The feedlines have transformer portions (11,12,29) of varying width for reducing reflection of signals passing through the network. A dielectric member (47a,47b) is mounted adjacent to the network and can be moved to synchronously adjust the phase relationship between the common line and one or more of the ports. The dielectric member also has transformer portions (91,93) for reducing reflection of signals passing through the network. At least one of the junctions (69) of the network does not overlap with the dielectric member, or overlaps a region of reduced permittivity.

Cette invention se rapporte à un dispositif servant à l'alimentation de signaux entre une ligne commune (10) et au moins deux ports (20-28). Ce dispositif comprend un réseau ramifié de lignes d'alimentation (1-18) couplant la ligne commune aux ports. Ces lignes d'alimentation comportent des parties transformateurs (11, 12, 29) de largeur variable, en vue de réduire la réflexion des signaux passant à travers le réseau. Un élément diélectrique (47a, 47b) est monté à proximité adjacente du réseau et peut être déplacé de façon à régler en mode synchrone la relation de phase entre la ligne commune et le ou les ports. L'élément diélectrique possède également des parties transformateurs (91, 93) servant à réduire la réflexion des signaux passant à travers le réseau. Au moins l'une des jonctions (69) du réseau ne se chevauche pas avec l'élément diélectrique, ou alors chevauche une zone de permittivité réduite.

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