Millimeter wave antenna, apparatus, and electronic device

Patent metadata

Field	Value
Publication number	US-12506253-B2
Application number	US-202218547779-A
Country	US
Kind code	B2
Filing date	Feb 25, 2022
Priority date	Feb 26, 2021
Publication date	Dec 23, 2025
Grant date	Dec 23, 2025

Abstract

A millimeter wave antenna includes a first metal plate, a second metal plate, and a radiation patch that are arranged in a stack manner. The first metal plate and the second metal plate form a cavity, and a first feeder is disposed in the cavity to feed the cavity. The second metal plate has a first slot. The radiation patch includes at least two patch elements, and a first patch slot is formed between the at least two patch elements. The first slot feeds the radiation patch.

First claim

What is claimed is:

1 . A millimeter wave antenna comprising:
a first metal plate; at least one via; a second metal plate electrically coupled to the first metal plate through the at least one via and comprising a first slot; a cavity formed by the first metal plate and the second metal plate; a first feeder disposed in the cavity to feed the cavity; a radiation patch comprising at least two patch elements; a plurality of parasitic patches arranged around the radiation patch; and a first patch slot formed between the at least two patch elements, wherein the first metal plate, the second metal plate, and the radiation patch are arranged in a stack manner, wherein the first slot is configured to feed the radiation patch, and wherein the cavity is a rectangle, and wherein the first slot is disposed along a diagonal of the cavity.

2 . The millimeter wave antenna of claim 1 , wherein the first metal plate, the second metal plate, and the at least one via are configured to enclose the cavity.

3 . The millimeter wave antenna of claim 1 , wherein the first slot is arrow-shaped, rectangular, H-shaped, dumbbell-shaped, or butterfly-shaped.

4 . The millimeter wave antenna of claim 1 , wherein the radiation patch is rectangular, circular, ring-shaped, fan-shaped, or diamond-shaped.

5 . The millimeter wave antenna of claim 1 , further comprising a parasitic metal post disposed on the second metal plate and surrounds the radiation patch.

6 . The millimeter wave antenna of claim 5 , wherein a height of the parasitic metal post is less than or equal to a shortest distance between the second metal plate and the radiation patch.

7 . The millimeter wave antenna of claim 5 , wherein the second metal plate further comprises an edge, and wherein the millimeter wave antenna further comprises a matching metal post disposed on the second metal plate and surrounds the edge.

8 . The millimeter wave antenna of claim 1 , wherein an operating frequency of the millimeter wave antenna comprises frequency bands of n257 (26.5 gigahertz (GHz) to 29.5 GHz), n258 (24.25 GHz to 27.5 GHZ), n259 (40.5 GHz to 43.5 GHZ), n260 (37 GHz to 40 GHz), and n261 (27.5 GHz to 28.35 GHz).

9 . The millimeter wave antenna of claim 5 , wherein the first feeder is configured to stimulate the cavity and the first slot to generate a first resonance mode, wherein the first slot is configured to stimulate the radiation patch to generate a second resonance mode and a third resonance mode, wherein resonance frequencies of the first resonance mode, the second resonance mode, and the third resonance mode are different, and wherein the parasitic metal post and the radiation patch are further configured to generate a fourth resonance mode.

10 . The millimeter wave antenna of claim 9 , further comprising a second feeder, wherein the second metal plate further comprises a second slot intersects with the first slot, and wherein the radiation patch further comprises:
a second patch slot; and at least four patch elements.

11 . The millimeter wave antenna of claim 10 , wherein the second feeder is further configured to stimulate the cavity and the second slot to generate the first resonance mode, wherein the second slot is further configured to stimulate the radiation patch to generate the second resonance mode and the third resonance mode, and wherein the parasitic metal post and the radiation patch is further configured to generate the fourth resonance mode.

12 . An apparatus comprising:
a radio frequency system comprising at least one of a filter, a switch, a low noise amplifier, or a power amplifier; and an array antenna comprising:
at least one antenna element comprising:
a millimeter wave antenna comprising:
a first metal plate;
at least one via;
a second metal plate electrically coupled to the first metal plate through the at least one via and comprising a first slot;

a cavity formed by the first metal plate and the second metal plate;
a first feeder disposed in the cavity to feed the cavity;
a radiation patch comprising at least two patch elements;
a plurality of parasitic patches arranged around the radiation patch; and
a first patch slot formed between the at least two patch elements,
wherein the first metal plate, the second metal plate, and the radiation patch are arranged in a stack manner,
wherein the first slot is configured to feed the radiation patch, and wherein the cavity is a rectangle, and wherein the first slot is disposed along a diagonal of the cavity.

13 . The apparatus of claim 12 , wherein the radiation patch is rectangular, circular, ring-shaped, fan-shaped, or diamond-shaped.

14 . An electronic device comprising:
an antenna carrier; and a millimeter wave antenna disposed on the antenna carrier and comprising:
a first metal plate;
at least one via;
a second metal plate electrically coupled to the first metal plate through the at least one via and comprising a first slot;
a cavity formed by the first metal plate and the second metal plate;
a first feeder disposed in the cavity to feed the cavity;
a radiation patch comprising at least two patch elements;
a plurality of parasitic patches arranged around the radiation patch; and
a first patch slot formed between the at least two patch elements,
wherein the first metal plate, the second metal plate, and the radiation patch are arranged in a stack manner,
wherein the first slot is configured to feed the radiation patch, and wherein the cavity is a rectangle, and wherein the first slot is disposed along a diagonal of the cavity.

15 . The electronic device of claim 14 , wherein the antenna carrier is a middle frame of the electronic device, a rear cover of the electronic device, a display of the electronic device, or a circuit board of the electronic device.

16 . The electronic device of claim 14 , wherein the first metal plate, the second metal plate, and the at least one via enclose the cavity.

17 . The electronic device of claim 14 , wherein the first slot is arrow-shaped, rectangular, H-shaped, dumbbell-shaped, or butterfly-shaped.

18 . The electronic device of claim 14 , wherein the radiation patch is rectangular, circular, ring-shaped, fan-shaped, or diamond-shaped.

Assignees

• Huawei Tech Co Ltd

Inventors

• Zhu Naida
• Hou Meng
• Wu Youquan

Classifications

• H01Q19/005

  Patch antenna using one or more coplanar parasitic elements · CPC title

• H01Q5/357

  using a single feed point · CPC title

• H01Q13/18

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

• H01Q9/0457

  electromagnetically coupled to the feed line · CPC title

• H01Q5/385

  Two or more parasitic elements · CPC title