Dual band antenna
First Claim
1. A dual band antenna, comprising at least one antenna element including a number of substantially planar, mutually parallel radiating patches (1-3) being fed with microwave power from a feed network (6) via a coupling means (5a, 5b;
- 5'"'"'a, 5'"'"'b) at a ground plane layer (4) of an electrically conductive material, whereinsaid feed network is adapted to feed microwave power in at least two separate frequency bands, including a first, relatively low frequency band and a second, relatively high frequency band,a first one of said patches (2) being adapted to radiate microwave power in said first frequency band and being provided with an aperture (9a, 9b) so as to couple microwave power in said second frequency band to a second one (1) of said patches,the microwave power in said first frequency band being fed from said feed network (6) via said coupling means at said ground plane layer to said first patch (2), and the microwave power in said second frequency band being fed from said feed network (6) via said coupling means at said ground plane layer (4) and via said aperture (9a, 9b) in said first patch (2) to said second patch (1).
12 Assignments
0 Petitions
Accused Products
Abstract
An aperture-coupled antenna, comprising at least one antenna element including a number of substantially planar, mutually parallel radiating patches (1-3) being fed with microwave power from a feed network (6) via an aperture (5a, 5b) in a ground plane layer (4). The feed network (6) feeds microwave power in at least two separate frequency bands, including a first, relatively low frequency band and a second, relatively high frequency band. A first patch (2) radiates microwave power in the first frequency band and is provided with an aperture (9a, 9b) so as to couple microwave power in the second frequency band to a second patch (1), the microwave power in the second frequency band being fed from the feed network (6) via the apertures (5a, 5b; 9a, 9b) in the ground plane layer (4) and the first patch (2) to the second patch (1).
-
Citations
10 Claims
-
1. A dual band antenna, comprising at least one antenna element including a number of substantially planar, mutually parallel radiating patches (1-3) being fed with microwave power from a feed network (6) via a coupling means (5a, 5b;
- 5'"'"'a, 5'"'"'b) at a ground plane layer (4) of an electrically conductive material, wherein
said feed network is adapted to feed microwave power in at least two separate frequency bands, including a first, relatively low frequency band and a second, relatively high frequency band, a first one of said patches (2) being adapted to radiate microwave power in said first frequency band and being provided with an aperture (9a, 9b) so as to couple microwave power in said second frequency band to a second one (1) of said patches, the microwave power in said first frequency band being fed from said feed network (6) via said coupling means at said ground plane layer to said first patch (2), and the microwave power in said second frequency band being fed from said feed network (6) via said coupling means at said ground plane layer (4) and via said aperture (9a, 9b) in said first patch (2) to said second patch (1). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- 5'"'"'a, 5'"'"'b) at a ground plane layer (4) of an electrically conductive material, wherein
-
10. A dual band antenna as defined in claim, wherein said center frequency of said first frequency band is in the region 800-1000 MHz, whereas said center frequency of said second frequency band is in the region 1700-2000 MHz.
Specification