Multiple feed slot antenna

Patent metadata

Field	Value
Publication number	US-11239546-B2
Application number	US-201916353218-A
Country	US
Kind code	B2
Filing date	Mar 14, 2019
Priority date	Mar 14, 2019
Publication date	Feb 1, 2022
Grant date	Feb 1, 2022

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

We claim:

1. A computing device comprising:
at least one wireless link component operable to maintain at least one wireless link between the computing device and another device;
a plurality of antenna units, each respective antenna unit of the plurality of antenna units comprising:
a respective bottom shielding structure that forms a respective cavity;
a respective dual-port slot antenna 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 respective antenna unit;
respective apertures of the dual-port slot antennas, an aperture having 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 associated with the first geometry type;
a respective top shielding structure connected to the respective bottom shielding structure with an aperture window positioned over the respective dual-port slot antenna associated with radiating the waveforms within the frequency range; and
a plurality of signal feeds coupled to the at least one wireless link component and the plurality of antenna units to form an antenna array.

2. The computing device as recited in claim 1 , wherein each respective cavity has a respective volume configured to modify a lossy resonance associated with the respective dual-port slot antenna.

3. The computing device as recited in claim 1 , wherein the computing device comprises a mobile phone.

4. The computing device as recited in claim 3 further comprising a display device of the mobile phone and a printed circuit board (PCB), wherein the plurality of antenna units are located on the PCB and positioned under the display device of the mobile phone.

5. The computing device as recited in claim 1 , wherein the bilateral symmetry shape type comprises an inverse bilateral symmetry shape type.

6. The computing device as recited in claim 5 , wherein the respective shape of the respective aperture follows a letter “S”.

7. The computing device as recited in claim 5 , wherein the shape of the aperture follows a letter “W”.

8. The computing device as recited in claim 5 , wherein the plurality of antenna units comprises a single structure that is partitioned to form at least each respective bottom shielding structure.

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

• H01Q21/0043

  Slotted waveguides (combination with horns H01Q13/0233) · CPC title

• H01Q1/243

  with built-in antennas · CPC title

• H01Q21/064

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