Adaptive mmWave antenna radome
A device includes a device cover and an antenna system underneath the device cover. The device cover is separated from the antenna system. The device cover includes a perfect magnetic conductor (PMC) equivalent material surrounding the antenna system without overlapping the antenna system.
1. A device comprising:
a device cover; and
an antenna system underneath the device cover,
wherein the device cover is separated from the antenna system,
wherein the device cover comprises a dielectric device cover,
wherein the device cover further comprises a perfect magnetic conductor (PMC) equivalent material surrounding the antenna system without overlapping the antenna system, and
wherein the PMC equivalent material is planar.
2. The device of claim 1 , wherein the antenna system comprises one or more antenna system elements.
3. The device of claim 1 , wherein the antenna system comprises an antenna in package (AiP), an antenna on board (AoB), or an antenna in Module (AiM).
4. The device of claim 1 , wherein the antenna system comprises one or more antennas configured to operate in mmWave frequency.
5. The device of claim 1 , wherein the device cover serves as a superstrate of the antenna system, and the PMC equivalent material is disposed on a surface of the dielectric device cover facing towards the antenna system.
6. The device of claim 1 , wherein the PMC equivalent material is of a width equal to or larger than λd/2, wherein λd is an effective wavelength of a guided wave in the device cover.
7. The device of claim 1 , wherein the PMC equivalent material has a structure that suppresses microwaves inside of the device cover.
8. The device of claim 7 , wherein the structure comprises an Electromagnetic Band Gap (EBG) or a Photonic Band Gap (PBG) structure.
9. The device of claim 1 , wherein the PMC equivalent material comprises a plurality of holes in a dielectric substrate, wherein a shape and dimension of the plurality of holes are determined based on dielectric parameters of the device cover and a distance between the device cover and the antenna system.
10. A device cover comprising:
a substrate, a first surface of the substrate facing an antenna system underneath the substrate, and the substrate being separated from the antenna system; and
a perfect magnetic conductor (PMC) equivalent material disposed on the first surface of the substrate, the PMC equivalent material surrounding the antenna system without overlapping the antenna system, a second surface of the PMC equivalent material parallel to the first surface of the substrate being of a rectangular frame shape.
11. The device cover of claim 10 , wherein the substrate is of a dielectric material.
12. The device cover of claim 10 , wherein the PMC equivalent material is of a width equal to or larger than λd/2, wherein λd is an effective wavelength of a guided wave in the device cover.
13. The device cover of claim 10 , wherein the PMC equivalent material has an Electromagnetic Band Gap (EBG) or a Photonic Band Gap (PBG) structure.
14. The device cover of claim 10 , wherein the PMC equivalent material comprises a plurality of holes in a dielectric substrate, wherein a shape and dimension of the plurality of holes are determined based on dielectric parameters of the device cover and a distance between the device cover and the antenna system.
15. A mobile phone comprising:
a mobile phone cover; and
an antenna system underneath the mobile phone cover,
wherein the mobile phone cover is separated from the antenna system; and
wherein the mobile phone cover comprises a perfect magnetic conductor (PMC) equivalent material surrounding the antenna system without overlapping the antenna system, a shape of the PMC equivalent material matching a shape of the antenna system.
16. The mobile phone of claim 15 , wherein the antenna system comprises an antenna in package (AiP), an antenna on board (AoB), or an antenna in Module (AiM).
17. The mobile phone of claim 15 , wherein the mobile phone cover comprises a mobile phone front cover covering a front side of the mobile phone, the front side comprising a screen of the mobile phone.
18. The mobile phone of claim 15 , wherein the mobile phone cover comprises a mobile phone back cover covering a back side of the mobile phone, the back side opposing a screen of the mobile phone.
19. The mobile phone of claim 15 , wherein the mobile phone cover comprises a mobile phone side or edge cover covering a side or an edge of the mobile phone, the side or the edge of the mobile phone being peripheral to a screen of the mobile phone.
20. The device of claim 1 , wherein the antenna system includes at least 4 patches of antenna elements, wherein the PMC equivalent material includes multiple metallic elements, and wherein a bottom surface of the PMC equivalent material is above a top surface of the antenna system by a positive gap value along a direction perpendicular to the top surface of the antenna system.