Dual linear polarized folded stacked patch/magnetoelectric antenna for compact antenna array arrangements
View Patent ↗Systems, devices, and methods related to dual linear polarized wideband antennas for compact antenna arrangements are provided. An example antenna structure includes a multi-layered printed circuit board (PCB); a folded magnetoelectric antenna element including a first portion disposed on a first layer of the multi-layered PCB and a first fold portion contiguous to the first portion and extending to at least a second layer of the multi-layered PCB; and a patch antenna element disposed on a third layer of the multi-layered PCB, wherein the first, second, and third layers are separate layers of the multi-layered PCB. The antenna structure further includes a first feeding port electrically coupled to the patch antenna element, and a second feeding port electrically coupled to the patch antenna element, where the first and second feeding ports are associated with different polarizations.
1 . An antenna structure, comprising:
a multi-layered printed circuit board (PCB);
a folded magnetoelectric antenna element including a first portion disposed on a first layer of the multi-layered PCB and a first fold portion contiguous to the first portion and extending to at least a second layer of the multi-layered PCB; and
a patch antenna element disposed on a third layer of the multi-layered PCB, with the patch antenna element coupled with a first feeding element and a second feeding element configured to cause the patch antenna element to emanate electromagnetic field, wherein the first feeding element and the second feeding element are located symmetrically in the antenna structure;
wherein the first layer, the second layer, and the third layer are separate layers of the multi-layered PCB.
2 . The antenna structure of claim 1 , wherein the folded magnetoelectric antenna element further includes a second fold portion contiguous to the first fold portion and disposed on the second layer of the multi-layered PCB.
3 . The antenna structure of claim 1 , wherein the second layer is between the first layer and the third layer, and wherein the first fold portion of the folded magnetoelectric antenna element further extends to the third layer of the multi-layered PCB.
4 . The antenna structure of claim 3 , wherein the folded magnetoelectric antenna element further includes a third fold portion contiguous to the first fold portion and disposed on the third layer of the multi-layered PCB.
5 . The antenna structure of claim 1 , wherein the first fold portion of the folded magnetoelectric antenna element extends along a side of the antenna structure.
6 . The antenna structure of claim 1 , wherein the folded magnetoelectric antenna element includes a plurality of folded patches spaced apart from each other, and wherein the first portion and the first fold portion correspond to a first folded patch of the plurality of folded patches.
7 . The antenna structure of claim 6 , wherein an outer edge of the first folded patch is folded to form the first fold portion.
8 . The antenna structure of claim 6 , wherein an inner edge of the first folded patch is folded to form the first fold portion.
9 . The antenna structure of claim 1 , wherein the folded magnetoelectric antenna element is connected to a ground layer of the multi-layered PCB by at least two staggered vias.
10 . The antenna structure of claim 1 , further comprising:
a first feeding port electrically coupled to the patch antenna element by the first feeding element, wherein the first feeding port is associated with a first polarization; and
a second feeding port electrically coupled to the patch antenna element by the second feeding element, and wherein the second feeding port is associated with a second polarization different from the first polarization.
11 . A multi-layered printed circuit board (PCB) antenna device, comprising:
a plurality of PCB layers;
a folded magnetoelectric antenna element including a plurality of patches disposed on a first PCB layer of the plurality of PCB layers and spaced apart from each other, wherein one or more edges of a first patch of the plurality of patches are folded and extend vertically towards a second PCB layer of the plurality of PCB layers, wherein the second PCB layer is vertically below the first PCB layer,
a patch antenna element disposed on a third PCB layer of the plurality of PCB layers, wherein the third PCB layer is vertically below the second PCB layer, with the patch antenna element coupled with a first feeding element and a second feeding element each configured to cause the patch antenna element to emanate electromagnetic field;
a first feeding port electrically coupled to the patch antenna element by the first feeding element, wherein the first feeding port is associated with a first polarization; and
a second feeding port electrically coupled to the patch antenna element by the second feeding element, wherein the second feeding port is associated with a second polarization different from the first polarization;
wherein the first feeding element and the second feeding element are located symmetrically in the multi-layered PCB antenna device.
12 . The multi-layered PCB antenna device of claim 11 , wherein the one or more edges of the first patch that are folded includes at least one of an outer edge of the first patch or an inner edge of the first patch.
13 . The multi-layered PCB antenna device of claim 11 , wherein a side dimension of the folded magnetoelectric antenna element is between 0.25 and 0.3 of a wavelength.
14 . The multi-layered PCB antenna device of claim 11 , wherein each of the plurality of patches of the folded magnetoelectric antenna element is electrically coupled to a ground layer of the plurality of PCB layers via two or more staggered PCB vias.
15 . The multi-layered PCB antenna device of claim 11 , wherein the plurality of PCB layers are spaced apart from each other by dielectric material having a dielectric constant between 3 and 4.
16 . The multi-layered PCB antenna device of claim 11 , wherein the third PCB layer and a ground layer of the plurality of PCB layers are spaced apart by a PCB core having height between 0.05 and 0.2 of a free-space wavelength.
17 . The multi-layered PCB antenna device of claim 11 , wherein the first PCB layer, the second PCB layer, and the third PCB layer are spaced apart from a fourth, fifth, and sixth PCB layers of the plurality of PCB layers by a PCB core.
18 . An antenna array apparatus comprising:
a plurality of antenna elements, wherein a first antenna element of the plurality of antenna elements comprises:
a plurality of printed circuitry board (PCB) layers;
a folded magnetoelectric antenna element including a plurality of patches disposed on a first PCB layer of the plurality of PCB layers and spaced apart from each other, wherein one or more edges of a first patch of the plurality of patches are folded and extend vertically towards a second PCB layer of the plurality of PCB layers, wherein the second PCB layer is vertically below the first PCB layer; and
a patch antenna element disposed on a third PCB layer of the plurality of PCB layers, wherein the third PCB layer is vertically below the second PCB layer with the patch antenna element coupled with a first feeding element and a second feeding element configured to cause the patch antenna element to emanate electromagnetic field, wherein the first feeding element and the second feeding element are located symmetrically in the antenna array apparatus.
19 . The antenna array apparatus of claim 18 , wherein the first antenna element is housed in a surface mount technology (SMT) package.
20 . The antenna array apparatus of claim 18 , wherein the plurality of antenna elements provides a scan range including at least one of an azimuth scan angle up to 70 degrees or an elevation scan angle up to 70 degrees.