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US 11,769,948 B2Granted
Dual-band dual-polarized antenna for 5G applications
AssigneeThe Regents of the University of Michigan
InventorsKamal Sarabandi, Menglou Rao
Life of this patent
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Abstract
A dual-polarized antenna is presented for 5G mobile communications. The antenna includes two discrete elements—a folded dipole and a folded monopole, which generate two orthogonal polarizations. Parasitic elements are used to realize higher-band operation. In one example, the antenna covers both the 28 GHz band and the 39 GHz band. The entire structure is designed on an ultra-thin four-layer laminate and is intended to be incorporated along the edges of smartphones to enable 5G operation.
Claims18
A wideband dual-polarized antenna, comprising:
- a top layer;
- a ground plane;
- intermediate layers sandwiched between the top layer and the ground plane and forming a multi-layer structure;
- a folded dipole antenna element formed by a planar conductor residing in the top layer and disposed along an edge of the ground plane, where the folded dipole antenna element is configured to receive and radiate horizontally polarized waves in a frequency band and in an endfire direction parallel to plane of the ground plane, such that the edge of the ground plane reflects the horizontally polarized wave in the endfire;
- and
- a folded monopole antenna element formed by a planar conductor residing in one of the intermediate layers and configured to receive and radiate vertically polarized waves in the frequency band and in the endfire direction parallel to plane of the ground plane, where the folded dipole antenna element and the folded monopole antenna element are monolithically integrated onto the ground plane;
- and
- a row of metal pins embedded in the multi-layer structure and configured to separate the folded monopole antenna element from other circuit components integrated onto the substrate, where each metal pin in the row of metal pins extends between the top layer and the ground plane and the row of metal pins reflect the vertically polarized wave in the endfire direction.
5 more elements
A dual-band dual-polarized antenna, comprising:
- a dipole antenna element formed by a planar conductor on a substrate and configured to receive and radiate horizontally polarized waves in a first frequency band;
- a folded dipole antenna element disposed adjacent to the dipole antenna element and configured to receive and radiate horizontally polarized waves in a second frequency band, where lower bound of the second frequency band is higher than upper bound of the first frequency band;
- a low-band folded monopole antenna element formed by a planar conductor on the substrate and configured to receive and radiate vertically polarized waves in the first frequency band;
- and
- a high-band folded monopole antenna element is adjacent to the low-band folded monopole antenna element and configured to receive and radiate vertically polarized waves in the second frequency band, where the dipole antenna element, the folded dipole antenna element, the low-band folded monopole antenna element and the high-band folded monopole antenna element are monolithically integrated onto the substrate.
2 more elements
Dependencies are inferred from the claim text.