TWI854710B - Electronic device and antenna assembly - Google Patents

Abstract

An electronic device includes a casing, a motherboard, a noise source and an antenna assembly. The motherboard is located in the casing, and the noise source is disposed on the motherboard. The antenna assembly includes an antenna and a shielding cover. The antenna is electrically connected to the motherboard and located close to the casing. The antenna has a radiation portion. The shielding cover is fixed to the casing and is at least partially located between the antenna and the noise source. The shielding cover surrounds and forms a shielding space, a first opening and a second opening. The first opening and the second opening are respectively located at different sides of the shielding space. The first opening is covered by the casing and located close to the antenna, and the second opening is located close to the radiation portion of the antenna, and the second opening and the noise source are respectively located at different sides of the shielding cover.

Description

Electronic devices and antenna components

The present invention relates to an antenna assembly and an electronic device.

In order to prevent the transmission and reception of the antenna in the electronic device from being interfered by the noise generated by other electronic components, a square metal shielding case is conventionally used to completely seal the antenna to block the interference of the noise.

However, this approach will result in excessive antenna gain, which will result in poor performance in omnidirectional radiation performance indicators, requiring more antenna modules to compensate for the radiation pattern. In addition, excessive gain may also cause concerns about regulatory compliance.

The present invention provides an electronic device and an antenna assembly, which can prevent the antenna from receiving and transmitting interference and reduce the antenna gain.

An electronic device disclosed in an embodiment of the present invention includes a housing, a motherboard, a noise source and an antenna assembly. The motherboard is located in the housing. The noise source is arranged on the motherboard. The antenna assembly includes an antenna and a shielding cover. The antenna is electrically connected to the motherboard and is adjacent to the housing, and the antenna has a radiation portion. The shielding cover is fixed to the housing and is at least partially located between the antenna and the noise source. The shielding cover surrounds a shielding space, a first opening and a second opening, the first opening and the second opening are respectively located on opposite sides of the shielding space, the first opening is shielded by the housing and is adjacent to the antenna, the second opening is adjacent to the radiation portion of the antenna, and the second opening and the noise source are respectively located on opposite sides of the shielding cover.

Another embodiment of the present invention discloses an antenna assembly for installation in a housing. The antenna assembly includes an antenna and a shielding cover. The antenna is used to be adjacent to the housing, and the antenna has a radiation portion. The shielding cover is used to be fixed to the housing. The shielding cover surrounds a shielding space, a first opening, and a second opening. The first opening and the second opening are respectively located at different sides of the shielding space, the first opening is used to be shielded by the housing and adjacent to the antenna, and the second opening is adjacent to the radiation portion of the antenna.

According to the electronic device and antenna assembly disclosed in the above embodiments, although the shielding cover is provided with a second opening adjacent to the radiation portion of the antenna, the second opening and the noise source are located on different sides of the shielding cover, respectively. Therefore, the shielding cover can maintain the effect of shielding the noise generated by the noise source while reducing the antenna gain.

The above description of the content of the present invention and the following description of the implementation method are used to demonstrate and explain the principle of the present invention and provide a further explanation of the scope of the patent application of the present invention.

Please refer to Figure 1 and Figure 2. Figure 1 is a partial three-dimensional schematic diagram of an electronic device disclosed according to the first embodiment of the present invention. Figure 2 is a partial top view schematic diagram of the electronic device of Figure 1.

In this embodiment, the electronic device 1 is, for example, a notebook computer or a desktop computer, which includes a housing 10, a motherboard 20, a noise source 30, and an antenna assembly 40. The electronic device 1 may also include other electronic components (such as a hard disk, a fan, etc.), but in order to clearly show the connection relationship between the housing 10, the motherboard 20, the noise source 30, and the antenna assembly 40, some components of the electronic device 1 are omitted in the figure. In addition, although the figure only shows a part of the housing 10, it can be understood that the housing 10 is a housing that surrounds the housing 10, the noise source 30, the antenna assembly 40, and other components to accommodate the housing.

In this embodiment, the motherboard 20 is located in the housing 10 , and the noise source 30 is disposed on the motherboard 20 .

The antenna assembly 40 includes an antenna 41 and a shielding cover 42. The antenna 41 is, for example, a circuit board type antenna 41. The antenna 41 is electrically connected to the motherboard 20, wherein the antenna 41 is, for example, electrically connected to the motherboard 20 through a wire (not shown). The antenna 41 is adjacent to the housing 10, and the antenna 41 has a radiating portion 411.

The shielding cover 42 includes a first wall 421, two second walls 422 and a third wall 423. The two second walls 422 and the third wall 423 are respectively connected to different sides of the first wall 421, and the two second walls 422 are opposite to each other and adjacent to the third wall 423. The first wall 421, the two second walls 422 and the third wall 423 together form a shielding space 424, a first opening 425 and a second opening 426, and the first opening 425 and the second opening 426 are respectively located at two adjacent sides of the shielding space 424. The second walls 422 are fixed to the housing 10 . The first opening 425 is adjacent to the antenna 41 and shielded by the housing 10 . The second opening 426 is adjacent to the radiation portion 411 of the antenna 41 and opposite to the third wall 423 . The second opening 426 and the noise source 30 are respectively located at two adjacent sides of the shielding cover 42 .

In this embodiment, the shielding cover 42 may further include a grounding plate 427. The grounding plate 427 is connected to the first wall 421 and extends in a direction away from the housing 10. The grounding plate 427 is used for grounding to conduct noise away. The grounding plate 427 has a plurality of vents 4271 to prevent the grounding plate 427 from blocking the flow of heat dissipation airflow. It should be noted that the grounding plate 427 is an optional structure. In other embodiments, the shielding cover may not have a grounding plate, and other structures or components may be used to ground the shielding cover.

In this embodiment, although the shielding mask 42 is provided with a second opening 426 adjacent to the radiating portion 411 of the antenna 41, the second opening 426 and the noise source 30 are respectively located on two adjacent sides of the shielding mask 42, so that the shielding mask 42 can shield the noise generated by the noise source 30 while reducing the gain of the antenna 41. Therefore, the shielding mask 42 can suppress noise and prevent the radiation pattern of the antenna 41 from being too concentrated, thereby achieving an omnidirectional radiation pattern and maintaining good throughput performance.

In this embodiment, the distance D1 between the antenna 41 and the first wall 421 is, for example, greater than or equal to 6 mm, and the distance D2 between the antenna 41 and each second wall 422 is, for example, greater than or equal to 2 mm. In this way, the aforementioned effect can be further enhanced, and omnidirectional radiation of the WiFi 6e frequency band can be achieved, and the effect of shielding radio frequency interference (RFI) can reach at least 10 dB.

It should be noted that the distance D1 between the antenna 41 and the first wall 421 and the distance D2 between the antenna 41 and each of the second walls 422 are not intended to limit the present invention, but can be adjusted as needed.

It should be noted that the third wall 423 of the shielding mask 42 is an optional structure. If the shielding mask can still meet the required noise shielding requirements without the third wall, the third wall of the shielding mask can be omitted.

It should be noted that the second opening 426 and the noise source 30 are not limited to being located at two adjacent sides of the shielding mask 42. In other embodiments, the second opening and the noise source may be located at two opposite sides of the shielding mask. For example, the second opening is located at the upper side of the shielding mask, and the signal source is located at the lower side of the shielding mask. In the configuration where the signal source is located at the lower side of the shielding mask, the second opening may be located at the other side of the shielding mask and opposite to the first opening.

Next, please refer to FIG. 3 , which is a three-dimensional schematic diagram of an antenna assembly disclosed according to the second embodiment of the present invention.

The antenna assembly 40a of this embodiment is similar to the antenna assembly 40 of the above embodiment. The difference between the two mainly lies in the type of antenna. Therefore, the following mainly describes the antenna 41a of the antenna assembly 40a of this embodiment, and the same or similar parts of the two are not repeated.

In this embodiment, the antenna 41a of the antenna assembly 40a is, for example, a slotted antenna, which is located at the first opening 425a of the shielding cover 42a, and the second opening 426a of the shielding cover 42a is adjacent to the radiation portion 411a of the antenna 41a, and the slotted hole 412a of the antenna 41a is connected to the second opening 426a of the shielding cover 42a.

According to the electronic device and antenna assembly disclosed in the above embodiment, although the shielding cover is provided with a second opening adjacent to the radiation portion of the antenna, the second opening and the noise source are respectively located on two adjacent sides of the shielding cover, so that the shielding cover can shield the noise generated by the noise source while reducing the antenna gain. Therefore, the shielding cover can suppress noise and prevent the antenna's radiation pattern from being too concentrated, thereby achieving an omnidirectional radiation pattern and maintaining good throughput performance.

In addition, the distance between the antenna and the first wall is, for example, greater than or equal to 6 mm, and the distance between the antenna and each second wall is, for example, greater than or equal to 2 mm. In this way, the aforementioned effect can be further enhanced, and omnidirectional radiation of the WiFi 6e frequency band can be achieved, and the effect of shielding radio frequency interference (RFI) can reach at least 10 dB.

Although the present invention is disclosed as above with the aforementioned preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of patent protection of the present invention shall be subject to the scope of the patent application attached to this specification.

1: Electronic devices

10: Shell

20: Motherboard

30: Noise Source

40,40a: Antenna components

41,41a:Antenna

411,411a: Radiation Department

412a: slotted hole

42,42a: Shielding mask

421: First Wall

422: Second Wall

423: The third wall

424: Shielded Space

425,425a: First opening

426,426a: Second opening

427: Grounding plate

4271:Ventilation holes

D1,D2:Distance

FIG. 1 is a partial three-dimensional schematic diagram of an electronic device disclosed according to the first embodiment of the present invention. FIG. 2 is a partial top view schematic diagram of the electronic device of FIG. 1 . FIG. 3 is a three-dimensional schematic diagram of an antenna assembly disclosed according to the second embodiment of the present invention.

1: Electronic devices

10: Shell

20: Motherboard

30: Noise source

40: Antenna components

41: Antenna

411: Radiation Department

42: Shielding mask

421: The first wall

422: Second wall

423: The third wall

424: Shielded space

425: First opening

426: Second opening

427: Grounding plate

4271:Ventilation hole

Claims (8)

An electronic device comprises: a housing; a motherboard located in the housing; a noise source disposed on the motherboard; and an antenna assembly comprising: an antenna electrically connected to the motherboard and adjacent to the housing, the antenna having a radiation portion; and a shielding cover fixed to the housing and at least partially located between the antenna and the noise source, the shielding cover surrounding a shielding space, a first opening and a second opening, the first opening and the second opening being located at opposite sides of the shielding space, respectively, the first opening being shielded by the housing and adjacent to the antenna, The second opening is adjacent to the radiation part of the antenna, and the second opening and the noise source are respectively located on opposite sides of the shielding mask; wherein the shielding mask comprises a first wall and two second walls, the two second walls are respectively connected to the opposite sides of the first wall and fixed to the shell, the first wall and the two second walls jointly surround the connected shielding space, the first opening and the second opening, the first opening and the second opening are respectively located on two adjacent sides of the shielding space, and the second opening and the noise source are respectively located on two adjacent sides of the shielding mask. The housing assembly as described in claim 1, wherein the distance between the antenna and the first wall is greater than or equal to 6 mm. The housing assembly as described in claim 1, wherein the antenna is a circuit board type antenna, and the distance between the antenna and each of the second walls is greater than or equal to 2 mm. The housing assembly as described in claim 1, wherein the antenna is a slotted hole antenna, the antenna has a connected slotted hole, and the slotted hole is connected to the second opening. The housing assembly as described in claim 1, wherein the shielding cover further comprises a third wall, the third wall and the two second walls are respectively connected to different sides of the first wall, and the third wall is opposite to the second opening. The housing assembly as described in claim 1, wherein the shielding cover further comprises a grounding plate, the grounding plate is connected to the first wall and extends away from the housing, and the grounding plate has a plurality of ventilation holes. An antenna assembly is used to be installed in a housing, comprising: an antenna, which is used to be adjacent to the housing, and has a radiating portion; and a shielding cover, which is used to be fixed to the housing, and the shielding cover surrounds a shielding space, a first opening and a second opening, the first opening and the second opening are respectively located at different sides of the shielding space, the first opening is used to be shielded by the housing and is adjacent to the antenna, and the second opening is used to be shielded by the housing and is adjacent to the antenna. The two openings are adjacent to the radiation part of the antenna; wherein the shielding cover includes a first wall and two second walls, the two second walls are respectively connected to the opposite sides of the first wall and are used to be fixed to the shell, the first wall and the two second walls together surround the connected shielding space, the first opening and the second opening, and the first opening and the second opening are respectively located at two adjacent sides of the shielding space. The antenna assembly as described in claim 7, wherein the distance between the antenna and the first wall is greater than or equal to 6 mm.

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