Patent Application
20230030798
The present disclosure relates to the field of communications technologies, and in particular, to an antenna module and an electronic device.
At present, most electronic devices are equipped with antennas for wireless communication, such as a positioning antenna for achieving a positioning function and a Bluetooth antenna for achieving Bluetooth communication. With the increasingly strong demand for metal appearance and 5G and multi input multi output (MIMO) technologies, the number of antennas in an electronic device is also increasing. The MIMO technology is usually implemented based on an antenna array. An existing antenna module implements the dual polarization of one antenna array at most. When more antenna arrays are laid out, a larger mounting space is required in the electronic device to lay out the antenna module, which is not conducive to developing the electronic device that is lighter and thinner.
Embodiments of the present disclosure provide an antenna module and an electronic device.
According to a first aspect, the embodiments of the present disclosure provide an antenna module, including a first substrate, a second substrate, and a signal processing chip, where the second substrate and the signal processing chip are located on a same side of the first substrate, a side of the first substrate that faces away from the second substrate is provided with a first antenna array, and the second substrate bears a second antenna array.
According to a second aspect, the embodiments of the present disclosure further provide an electronic device, including the antenna module according to the first aspect.
To describe the technical solutions in the embodiments of the present disclosure more clearly, the following briefly describes the accompanying drawings required for describing the embodiments. Apparently, the accompanying drawings in the following description show merely some embodiments of the present disclosure, and a person of ordinary skill in the art may still derive other drawings from these accompanying drawings.
The following clearly describes the technical solutions in the embodiments of the present disclosure with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are some but not all of the embodiments of the present disclosure. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure shall fall within the protection scope of the present disclosure.
An embodiment of the present disclosure provides an antenna module. Referring to
It should be noted that, the signal processing chip 13 may be an integrated circuit (IC) chip, and the signal processing chip 13 may include components such as a transceiver, a power supply, an RF front end (the radio frequency front end including a power amplifier, an antenna switch, a filter, a duplexer, and a low noise amplifier).
In this embodiment, the antenna module includes the first substrate 11 and the second substrate 12, the first substrate 11 may be a main substrate of the antenna module, and the first substrate 11 may be provided with a metal ground plane to implement the grounding of the antenna module. Each of the second substrate 12 and the signal processing chip 13 is located on one side of the first substrate 11, and each of the first substrate 11 and the second substrate 12 bears an antenna array. In this way, two antenna arrays may be laid out on the antenna module, to implement dual polarization MIMO of the two antenna arrays, thereby reducing the number of antenna modules in an electronic device effectively, which is more conducive to developing the electronic device that is lighter and thinner.
Each of the first antenna array 14 and the second antenna array 15 is formed by arranging a plurality of antenna elements in array, and the number of antenna elements included in the first antenna array 14 may be the same as or different from the number of antenna elements included in the second antenna array 15. As shown in
It can be understood that, the second substrate 12 is disposed on the one side of the first substrate 11, and the arrangement position, shape, and size of the second substrate 12 on the first substrate 11 may vary depending on a specific situation.
Optionally, referring to
For ease of description, the antenna elements in the second antenna array 15 are collectively referred to as second antenna elements below. Optionally, each second antenna element may cover the second surface 112 and the third surface 121; or the each second antenna element may cover the first surface 111, the second surface 112, and the third surface 121.
In an implementation, as shown in
In this embodiment, the second antenna array 15 includes at least one antenna element, and the at least one antenna element is arranged in array in a length direction of the second substrate 12, and a length of the second substrate 12 is greater than or equal to a length of a connection line of two antenna elements farthest from each other in the second antenna array 15. That is to say, an array arrangement direction of the second antenna elements on the second substrate 12 is consistent with the length direction of the second substrate 12, and the length of the second substrate 12 is greater than a length of a connection line of the second antenna elements to ensure that the second substrate 12 plays a role in bearing the each second antenna element.
As shown in
In addition, a width of the second substrate 12 satisfies that the second antenna element does not protrude from the second substrate 12, that is to say, a width of a part of the second antenna element covering the fourth surface 122 is less than the width of the second substrate 12. It should be noted that, an overall width of the second antenna element, that is, a sum of widths of parts of the second antenna element covering the first surface 111, the second surface 112, the third surface 121, and the fourth surface 122, relates to an operating frequency band of the second antenna element; and the lower the operating frequency band of the second antenna element, the larger the overall width of the second antenna element. It can be understood that, the width of the second substrate 12 may be adjusted according to a width of a part of the second antenna element covering the fourth surface 122. For example, the larger the width of the second antenna element covering the first surface 111, the smaller the width of the second antenna element covering the fourth surface 122, so the width of the second substrate 12 may be correspondingly designed to be smaller, making layout of components on the signal processing chip 13 more flexible, but the width of the second substrate 12 still satisfies that the second antenna element does not protrude from the second substrate 12.
In this embodiment, a sum of thicknesses of the first substrate 11 and the second substrate 12 is one quarter to three quarters of a wavelength of the corresponding operating frequency band of the antenna module. For example, the sum of the thicknesses of the first substrate 11 and the second substrate 12 may be one quarter of the wavelength of the corresponding operating frequency band of the antenna module, or the sum of the thicknesses of the first substrate 11 and the second substrate 12 may be half of the wavelength of the corresponding operating frequency band of the antenna module, or the sum of the thicknesses of the first substrate 11 and the second substrate 12 may be three quarters of the wavelength of the corresponding operating frequency band of the antenna module. In this way, the thickness of each of the first substrate 11 and the second substrate 12 may be set according to the corresponding operating frequency band of the antenna module to achieve higher transmission and reception conversion efficiency of the antenna module.
Referring to
Optionally, the reflector 17 may be a metal plate, such as an aluminum plate, a copper plate, or a titanium plate. Alternatively, the reflector 17 includes through holes arranged in array (not shown in the drawings), a through hole includes a first opening and a second opening which are communicated with each other, the first opening faces the signal processing chip 13, and the second opening faces the second substrate 12. For example, the reflector 17 is a metal plate, the metal plate is provided with a plurality of through holes, and the plurality of through holes are arranged in array at certain intervals, for example, the interval between the through holes is 0.1 mm to 0.5 mm. In a solution, the interval between the through holes is 0.2 mm.
In this implementation, the arrangement of the through holes may reduce a weight of the reflector 17, that is, reduce a weight of the antenna module, which is more conducive to developing the electronic device that is lighter and thinner.
Optionally, in a case that a width of the second substrate 12 is relatively large, that is, a case that a width of the fourth surface 122 is relatively large, the fourth surface 122 is further provided with a third antenna array. In this case, a width of the antenna module may still be a width of the first substrate 11, that is to say, neither the second substrate 12 nor the signal processing chip 13 goes beyond a width range of the first substrate 11. In this way, in a case that the overall thickness and width of the antenna module are not increased, the antenna module may include three antenna arrays, that is, a channel capacity of the antenna module is increased, and the number of antenna modules in the electronic device is reduced, which is more conducive to developing the electronic device that is lighter and thinner.
Referring to
It should be noted that, an arrangement direction of the antenna elements in the second antenna array 15 is consistent with a length extension direction of the second substrate 12. As shown in
Alternatively, referring to
It can be understood that, according to the embodiments provided in
In addition, referring to
The embodiments of the present disclosure further provide an electronic device, and the electronic device includes all the technical features of the antenna module described in the above embodiments, and may achieve the same technical effect. In order to avoid repetition, details are not described again herein.
The electronic device may include a mobile phone, a tablet computer, an e-book reader, an MP3 player, an MP4 player, a digital camera, a laptop portable computer, a vehicle mounted computer, a desktop computer, a set-top box, a smart TV, and a wearable device.
The foregoing descriptions are merely specific implementations of the present disclosure, but are not intended to limit the protection scope of the present disclosure. Any variation or replacement readily figured out by a person skilled in the art within the technical scope disclosed in the present disclosure shall fall within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202010283862.5 | Apr 2020 | CN | national |
This application is a Bypass Continuation Application of PCT/CN2021/085810 filed Apr. 7, 2021, which claims priority to Chinese Patent Application No. 202010283862.5, filed Apr. 13, 2020, the disclosures of which are hereby incorporated by reference in their entirety.
| Number | Date | Country | |
|---|---|---|---|
| Parent | PCT/CN2021/085810 | Apr 2021 | US |
| Child | 17965572 | US |
