Multiple feed slot antenna

Patent metadata

Field	Value
Publication number	US-11545741-B2
Application number	US-202117335585-A
Country	US
Kind code	B2
Filing date	Jun 1, 2021
Priority date	Mar 14, 2019
Publication date	Jan 3, 2023
Grant date	Jan 3, 2023

Abstract

Multiple feed, front-shielded, coplanar waveguide, direct-fed, cavity-backed slot antennas are described. Various implementations form an antenna unit capable of millimeter waveform and/or microwave waveform transmissions. An antenna comprises a conductive plate that includes an aperture. The aperture has a shape that extends along an axis that bisects the aperture into first and second bisected portions, the first bisected portion having a first geometry type, and the second portion having a second geometry type that is a bilateral symmetry shape type of the first geometry type. In implementations, the aperture is configured to radiate waveforms within a frequency range from about between 600 Megahertz (MHz) to 72 Gigahertz (GHz) by applying multiple signal feeds to the conductive plate.

First claim

The invention claimed is:

1. An antenna array, comprising:
a conductor plate encasing multiple dual-port, cavity backed antennas of the antenna array in respective separate cavities defined by partitions of a shielding structure connected to the conductor plate, the shielding structure configured as a first, single conductor and the conductor plate configured as a second, single conductor connected to the shielding structure;
multiple aperture windows configured in the conductor plate, each positioned over a respective one of the multiple dual-port, cavity-backed antennas to radiate waveforms by the multiple dual-port, cavity-backed antennas, an aperture window having a shape that extends along an axis that bisects the aperture window into a first bisected portion and a second bisected portion, the first bisected portion having a first geometry type, and the second bisected portion having a second geometry type that has a bilateral symmetry shape of the first geometry type; and
multiple signal feeds applied to the conductor plate for wireless signal transmission as the waveforms radiated by the multiple dual-port, cavity-backed antennas.

2. The antenna array as recited in claim 1 , wherein the bilateral symmetry shape comprises an inverse bilateral symmetry shape.

3. The antenna array as recited in claim 1 , wherein the shape of the aperture window resembles a letter “S”.

4. The antenna array as recited in claim 1 , wherein the shape of the aperture window resembles a letter “W”.

5. The antenna array as recited in claim 1 , wherein the shape of the aperture window is inversely diagonally symmetric.

6. The antenna array as recited in claim 1 , wherein the multiple signal feeds comprise dual-port signal feeds.

7. The antenna array as recited in claim 1 , wherein the shape of the aperture window is configured to radiate the waveforms within a frequency range for 5th Generation (5G) wireless signal communication.

8. The antenna array as recited in claim 1 , wherein the shielding structure is a bottom shielding structure defining the respective separate cavities, and the conductor plate is a top shielding structure connected to the bottom shielding structure to encase the multiple dual-port, cavity backed antennas of the antenna array.

9. The antenna array as recited in claim 1 , wherein the shielding structure defines the respective separate cavities, including one or more dampening structures that modify resonance frequencies within the respective separate cavities of the multiple dual-port, cavity-backed antennas.

10. The antenna array as recited in claim 1 , wherein the shielding structure defines the respective separate cavities, including one or more dampening structures that shift a lossy resonance of a frequency within the respective separate cavities of the multiple dual-port, cavity-backed antennas.

11. The antenna array as recited in claim 1 , wherein the aperture window configured in the conductor plate radiates the waveforms by at least one of the multiple dual-port, cavity-backed antennas within a frequency range from between 600 Megahertz (MHz) to 72 Gigahertz (GHz).

12. The antenna array as recited in claim 1 , wherein the multiple signal feeds are each electronically coupled to the respective one of the multiple dual-port, cavity-backed antennas for the wireless signal transmission as the waveforms radiated by the antenna array.

13. The antenna array as recited in claim 1 , wherein each of the respective separate cavities has a volume that prevents a cavity from resonating at a resonance frequency associated with the respective one of the multiple dual-port, cavity-backed antennas.

14. A wireless device, comprising:
a wireless component configured to generate signals for wireless signal transmission;
an antenna array configured with multiple dual-port, cavity-backed antennas, the antenna array including:
a shielding structure configured as a first, single conductor with partitions forming separate cavities, each corresponding to one of the multiple dual-port, cavity-backed antennas located within one of the separate cavities;
a conductor plate configured as a second, single conductor connected to the shielding structure to encase the multiple dual-port, cavity-backed antennas in respective ones of the separate cavities;
multiple aperture windows configured in the conductor plate, each positioned over a respective one of the multiple dual-port, cavity-backed antennas, and configured to radiate waveforms by the multiple dual-port, cavity-backed antennas, the multiple aperture windows having a shape that extends along an axis that bisects an aperture window into a first bisected portion and a second bisected portion, the first bisected portion having a first geometry type, and the second bisected portion having a second geometry type that has a bilateral symmetry shape of the first geometry type; and
multiple signal feeds electronically coupled from the wireless component to the antenna array for the wireless signal transmission as the waveforms radiated by the multiple dual-port, cavity-backed antennas.

15. The wireless device as recited in claim 14 , wherein the shielding structure defines the separate cavities including one or more dampening structures that modify resonance frequencies within a separate cavity of a respective one of the multiple dual-port, cavity-backed antennas.

16. The wireless device as recited in claim 14 , wherein the bilateral symmetry shape comprises an inverse bilateral symmetry shape.

17. The wireless device as recited in claim 14 , wherein the shape of each of the multiple aperture windows resembles a letter “S”.

18. The wireless device as recited in claim 14 , wherein the shape of each of the multiple aperture windows resembles a letter “W”.

19. The wireless device as recited in claim 14 , wherein the shape of each of the multiple aperture windows is inversely diagonally symmetric.

20. The wireless device as recited in claim 14 , wherein the shielding structure defines the separate cavities including one or more dampening structures that shift a lossy resonance of a frequency within a separate cavity of a respective one of the multiple dual-port, cavity-backed antennas.

Assignees

• Motorola Mobility Llc

Inventors

• Zhao Junsheng
• Krenz Eric Le Roy
• Smith Hugh

Classifications

• H01Q13/18 Primary

  the slot being backed by, or formed in boundary wall of, a resonant cavity (longitudinally slotted cylinder H01Q13/12 ){; Open cavity antennas} · CPC title

• H01Q21/064

  using horn or slot aerials (slotted waveguides arrays H01Q21/005) · CPC title

• H01Q1/243

  with built-in antennas · CPC title

• G06F1/1698

  the I/O peripheral being a sending/receiving arrangement to establish a cordless communication link, e.g. radio or infrared link, integrated cellular phone (details of antennas disposed inside a computer H01Q1/2266) · CPC title

• H01Q1/38 Primary

  formed by a conductive layer on an insulating support {(patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface  H01Q15/142)} · CPC title