Multilayered slot-coupled antenna device
First Claim
Patent Images
1. A multilayered slot-coupled antenna device, comprising in sequence:
- a) an antenna element;
b) a first dielectric layer;
c) a ground plane having first and second coupling slots formed therein, the coupling slots comprising elongate apertures spaced apart and extending along a common axis;
d) a second dielectric layer; and
e) first and second feed lines connected to a signal-feed port through a power divider, the first feed line having a first line portion orthogonally crossing the first coupling slot in a first direction, the second feed line having a second line portion orthogonally crossing the second coupling slot in a second direction opposite to the first direction, the power divider being operative for substantially equally dividing a feed signal applied to the signal-feed port into first and second signals respectively coupled from the first and second line portions through the first and second coupling slots to the antenna element, the first and second signals having respective first and second phases differing from each other by substantially π
radians.
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Abstract
A multilayered slot-coupled antenna device employs a push-pull arrangement of at least two slot-feedline pairs, whereby the feed lines are driven from a common signal source and configured such that changes in antenna center-frequency and input impedance due to layer offsets are largely compensated.
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Citations
17 Claims
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1. A multilayered slot-coupled antenna device, comprising in sequence:
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a) an antenna element; b) a first dielectric layer; c) a ground plane having first and second coupling slots formed therein, the coupling slots comprising elongate apertures spaced apart and extending along a common axis; d) a second dielectric layer; and e) first and second feed lines connected to a signal-feed port through a power divider, the first feed line having a first line portion orthogonally crossing the first coupling slot in a first direction, the second feed line having a second line portion orthogonally crossing the second coupling slot in a second direction opposite to the first direction, the power divider being operative for substantially equally dividing a feed signal applied to the signal-feed port into first and second signals respectively coupled from the first and second line portions through the first and second coupling slots to the antenna element, the first and second signals having respective first and second phases differing from each other by substantially π
radians. - View Dependent Claims (2, 3, 4, 5)
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6. A multilayered slot-coupled antenna device, comprising in sequence:
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a) an antenna element constituting a conductive area; b) a first dielectric layer; c) a ground plane having first and second coupling slots formed therein, the coupling slots comprising elongate apertures spaced apart and parallel to each other; d) a second dielectric layer; and e) first and second feed lines connected to a signal-feed port through a power divider, the first feed line having a first line portion orthogonally crossing the first coupling slot in a first direction, the second feed line having a second line portion orthogonally crossing the second coupling slot in a second direction opposite to the first direction, the power divider being located within an area between the slots and juxtaposed with the conductive area of the antenna element and being operative for substantially equally dividing a feed signal applied to the signal-feed port into first and second signals respectively coupled from the first and second line portions through the first and second coupling slots to the antenna element, the first and second signals having respective first and second phases differing from each other by substantially π
radians. - View Dependent Claims (7)
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8. A multilayered slot-coupled antenna device, comprising in sequence:
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a) an antenna element; b) a first dielectric layer; c) a ground plane having first and second coupling slots formed therein, the coupling slots comprising elongate apertures spaced apart and parallel to each other; d) a second dielectric layer; and e) first and second feed lines connected to a signal-feed port through a power divider, the first feed line having a first line portion orthogonally crossing the first coupling slot in a first direction, the second feed line having a second line portion orthogonally crossing the second coupling slot in a second direction opposite to the first direction, the power divider being operative for substantially equally dividing a feed signal applied to the signal-feed port into first and second signals respectively coupled from the first and second line portions through the first and second coupling slots to the antenna element, the first and second signals having respective first and second phases differing from each other by substantially it radians, the first and second line portions respectively having first and second continuing portions extending parallel to the first and second coupling slots, the first and second continuing portions being spaced apart and parallel to each other. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification