CN116632540A

CN116632540A - Antenna system

Info

Publication number: CN116632540A
Application number: CN202310108523.7A
Authority: CN
Inventors: 江忠信
Original assignee: MediaTek Inc
Current assignee: MediaTek Inc
Priority date: 2022-02-18
Filing date: 2023-02-10
Publication date: 2023-08-22

Abstract

The invention provides an antenna system, which comprises a first antenna and a second antenna. The first antenna comprises a first horizontal part and is used for accessing a first wireless signal. The first wireless signal is transmitted and/or received through the first horizontal portion and the first reference layer. The second antenna comprises a second horizontal part and is used for accessing a second wireless signal. The second wireless signal is transmitted and/or received through a second horizontal portion and a second reference layer different from the first reference layer. The first wireless signal is in a first frequency band, the second wireless signal is in a second frequency band, and the frequency in the second frequency band is higher than the frequency in the first frequency band.

Description

Antenna system

Technical Field

Embodiments of the present invention relate generally to antenna technology and, more particularly, to an antenna system.

Background

As the demand for wireless communication increases, it is an important issue to install antennas of a plurality of frequency bands in the same device. For example, a mobile phone supporting multiple frequency bands can greatly improve the user experience. However, it is a challenge to install antennas of different frequency bands in the same device, and it is difficult for the current technology to integrate antennas of different frequency bands in the same device.

Disclosure of Invention

Accordingly, an objective of the present invention is to provide an antenna system for solving the above-mentioned problems.

In a first aspect, the present invention provides an antenna system comprising a first antenna and a second antenna, the first antenna comprising a first horizontal portion and the first antenna being configured to access a first wireless signal, the first wireless signal being transmitted and/or received through the first horizontal portion and a first reference layer; the second antenna includes a second horizontal portion and is configured to access a second wireless signal transmitted and/or received through the second horizontal portion and a second reference layer different from the first reference layer; the first wireless signal is in a first frequency band, the second wireless signal is in a second frequency band, and the frequency in the second frequency band is higher than the frequency of the first frequency band.

In some embodiments, a vertical distance between the first horizontal portion and the first reference layer is greater than a vertical distance between the second horizontal portion and the second reference layer.

In some embodiments, the first antenna further comprises a first feeding component, the first feeding component being separate from or connected to the first horizontal portion, and the first feeding component being configured to access a first transmission signal corresponding to the first wireless signal; and the second antenna further comprises a second feeding component which is separated from or connected with the second horizontal part and is used for accessing a second transmission signal corresponding to the second wireless signal.

In some embodiments, the second antenna further comprises a feeding component, the feeding component being separate from or connected to the second horizontal portion and the feeding component being for accessing a second transmission signal corresponding to the second wireless signal; and the second reference layer is provided with a notch for adjusting the second frequency band.

In some embodiments, the second reference layer has an annular gap for adjusting the second frequency band.

In some embodiments, the antenna system further includes an electromagnetic bandgap layer configured to reduce surface waves and disposed between the second level portion and the second reference layer.

In some embodiments, the antenna system further includes an electromagnetic bandgap layer configured to reduce surface waves and disposed below the first horizontal portion and the second horizontal portion and above the second reference layer.

In some embodiments, the first horizontal portion and/or the second horizontal portion is a patch.

In some embodiments, the first horizontal portion has an aperture; and the second horizontal part is arranged in the hole.

In some embodiments, the first level and the second level are of the same conductive layer.

In some embodiments, the first horizontal portion belongs to a first conductive layer, and the second horizontal portion belongs to a second conductive layer different from the first conductive layer.

In some embodiments, the antenna system further comprises an electromagnetic bandgap layer configured to reduce surface waves; the electromagnetic band gap layer is arranged below the first horizontal part and the second horizontal part and above the second reference layer, the electromagnetic band gap layer is provided with a pore, and the first horizontal part and the second horizontal part are positioned in the boundary of the pore.

In some embodiments, the first antenna further comprises a third horizontal portion configured to access a third wireless signal, the third wireless signal being in a third frequency band, the third frequency band having a frequency lower than the frequency in the second frequency band.

In some embodiments, a ratio of the highest frequency of the second frequency band to the lowest frequency of the first frequency band is greater than 2.

In some embodiments, the second antenna further comprises a fourth horizontal portion configured to access a fourth wireless signal, the fourth wireless signal being in a fourth frequency band, the frequency in the fourth frequency band being higher than the frequency in the first frequency band.

In some embodiments, the first horizontal portion is cross-shaped and includes four fins, and the second horizontal portion is disposed in a region enclosed by two adjacent fins of the first horizontal portion.

In some embodiments, the first horizontal portion includes a first arm and a second arm; and the first antenna further comprises a feeding component, the feeding component is not connected with the first arm and the second arm, and the feeding component is used for accessing a transmission signal corresponding to the first wireless signal.

In some embodiments, the second horizontal portion includes a first arm and a second arm; and the second antenna further comprises a feeding component, the feeding component is not connected with the first arm and the second arm, and the feeding component is used for accessing a transmission signal corresponding to the second wireless signal.

In some embodiments, each of the first antenna and the second antenna comprises a patch antenna, a dipole antenna, a planar inverted-F antenna, a monopole antenna, a slot antenna, and/or an aperture antenna.

In a second aspect, the present invention provides an antenna system comprising: m first antennas, each first antenna comprising a first horizontal portion and configured to access a first wireless signal, wherein the first wireless signal is transmitted and/or received through the first horizontal portion and a first reference layer; and n second antennas, each second antenna including a second horizontal portion and configured to access a second wireless signal, wherein the second wireless signal is transmitted and/or received through the second horizontal portion and a second reference layer different from the first reference layer; wherein the first wireless signal is in a first frequency band, the second wireless signal is in a second frequency band, the frequency in the second frequency band is higher than the frequency in the first frequency band, and m and n are integers greater than 1 and m < n.

These and other objects of the present invention will be readily understood by those skilled in the art after reading the following detailed description of the preferred embodiments as illustrated in the accompanying drawings. The detailed description will be given in the following embodiments with reference to the accompanying drawings.

Drawings

The accompanying drawings, in which like numerals indicate like components, illustrate embodiments of the invention. The accompanying drawings are included to provide a further understanding of embodiments of the invention, and are incorporated in and constitute a part of this embodiment of the invention. The drawings illustrate the implementation of embodiments of the invention and together with the description serve to explain the principles of embodiments of the invention. It will be appreciated that the drawings are not necessarily to scale, since some components may be shown out of scale from actual implementation to clearly illustrate the concepts of the embodiments of the invention.

Fig. 1 to 11 and fig. 13 to 16 show an antenna system according to different embodiments of the present invention.

Fig. 12 shows a plot of the dispersion parameter of the antenna system of fig. 11.

In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the invention. It will be apparent, however, that one or more embodiments may be practiced without these specific details, and that different embodiments may be combined as desired and should not be limited to the embodiments set forth in the drawings.

Detailed Description

The following description is of preferred embodiments of the invention, which are intended to illustrate the technical features of the invention, but not to limit the scope of the invention. Certain terms are used throughout the description and claims to refer to particular elements, and it will be understood by those skilled in the art that manufacturers may refer to a like element by different names. Therefore, the present specification and claims do not take the difference in names as a way of distinguishing elements, but rather take the difference in functions of elements as a basis for distinction. The terms "element," "system," and "apparatus" as used in the present invention may be a computer-related entity, either hardware, software, or a combination of hardware and software. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to …". Furthermore, the term "coupled" means an indirect or direct electrical connection. Thus, if one device is coupled to another device, that device can be directly electrically connected to the other device or indirectly electrically connected to the other device through other devices or connection means.

Wherein corresponding numerals and symbols in the various drawings generally refer to corresponding parts, unless otherwise indicated. The drawings are clearly illustrative of relevant portions of the embodiments and are not necessarily drawn to scale.

The term "substantially" or "approximately" as used herein means that within an acceptable range, a person skilled in the art can solve the technical problem to be solved, substantially to achieve the technical effect to be achieved. For example, "substantially equal" refers to a manner in which a technician can accept a certain error from "exactly equal" without affecting the accuracy of the result.

Fig. 1 shows a cross-sectional view of an antenna system 100 according to an embodiment of the invention. The antenna system 100 includes a first antenna 110 and a second antenna 120. The first antenna 110 includes a first horizontal portion (horizontal portion) 115 for accessing (also referred to as "accessing" or "accessing") the first wireless signal S1. The first wireless signal S1 is transmitted and/or received through (also referred to as "by" or "via") the first horizontal portion 115 and the first reference layer 118. The second antenna 120 includes a second horizontal portion 125, and the second antenna is used for accessing the second wireless signal S2. The second wireless signal S2 is transmitted and/or received through the second horizontal portion 125 and a second reference layer 128 different from the first reference layer 118. The first wireless signal S1 may be located in a first frequency band (also referred to as a "frequency band"), and the second wireless signal S2 may be located in a second frequency band, and the frequencies in the second frequency band are higher than the frequencies in the first frequency band (for convenience of understanding and explanation, the first frequency band is sometimes described as a "low frequency band" or a "lower frequency band", and the second frequency band is sometimes described as a "high frequency band" or a "higher frequency band"). In other words, the first antenna 110 may access the wireless signal in the lower (lower) frequency band, and the second antenna 120 may access the wireless signal in the higher (higher) frequency band. In some embodiments, the ratio of the highest frequency of the higher frequency band to the lowest frequency of the lower frequency band may be greater than 2.

For example, in 5G millimeter wave (mmWave) communications, the low frequency band corresponding to the first antenna 110 may be below 30GHz (e.g., 24GHz-30 GHz), while the high frequency band corresponding to the second antenna 120 may be between 30GHz and 71 GHz.

The first antenna 110 may further include a first feeding element 116, where the first feeding element 116 is configured to access a first transmission signal S10 corresponding to the first wireless signal S1. The second antenna 120 may further include a second feeding component 126, where the second feeding component 126 is configured to access a second transmission signal S20 corresponding to the second wireless signal S2.

In the example of fig. 1, the first feeding member 116 is connected to the first horizontal part 115, and the second feeding member 126 is connected to the second horizontal part 125, but the embodiment of the present invention is not limited thereto. For example, the first feeding element 116 and the first horizontal portion 115 may be unconnected (e.g., the first feeding element 116 and the first horizontal portion 115 are wirelessly coupled), and the second feeding element 126 and the second horizontal portion 125 may also be unconnected (e.g., the first feeding element 126 and the first horizontal portion 125 are wirelessly coupled), as shown in fig. 2.

The vertical distance Hl between the first horizontal portion 115 and the first reference layer 118 is greater than the vertical distance H2 between the second horizontal portion 125 and the second reference layer 128.

The first reference layer 118 may be a ground layer (ground layer). The second reference layer 128 may be a reference plane created by a meta-surface material (meta-material), a frequency selective surface (frequency selective surface, FSS) material, an electromagnetic bandgap (electromagnetic band gap, EBG) material, an artificial impedance surface material (artificial impedance surface material), and/or a periodic structure (periodic structure). The invention is not limited in this regard and, for example, the second reference layer 128 may be a ground layer and the first reference layer may be a reference plane created by the materials described above. The lower band signals (e.g., the first wireless signal S1) can be transmitted and/or received through the second reference layer 128, while the higher band signals are blocked (blocked) by the second reference layer 128. In other words, the second reference layer 128 has a low-pass characteristic (low-pass characteristic). Thus, by providing the second reference layer 128, the thickness (e.g., H1) of the antenna accessing the low frequency signal is greater than the thickness (e.g., H2) of the antenna accessing the high frequency signal. Thus, antennas of different frequency bands can be integrated in the same device, for example, in the same substrate or in the same circuit board. In the antenna provided by the embodiment of the invention, the thickness between the radiation component for accessing the wireless signal and the reference plane is related to the frequency of the signal to be accessed, for example, the higher the frequency is, the smaller the thickness is. Therefore, by setting reference planes of different heights for antennas of different frequency bands in the same device, it is possible to integrate antennas of different frequency bands in the same device, and in particular, it is possible to integrate antennas of a high frequency band and antennas of a low frequency band in the same device.

In fig. 1, a first antenna 110 and a second antenna 120 are formed in the same substrate 105. The first antenna 110 and the second antenna 120 may be formed in an antenna layer (antenna layer) 106 of the substrate 105. The first transmission signal S10 and the second transmission signal S20 may be transmitted to a circuit layer (circuit layer) 108 of the substrate 105 or received from the circuit layer 108 of the substrate 105. The wiring layer 108 may be formed of a plurality of conductive layers.

Fig. 2 to 16 show different embodiments of the antenna system. The same points as those of fig. 1 in fig. 2 to 16 are not repeated. Fig. 2 shows a cross-sectional view of an antenna system 200 according to another embodiment of the invention. In the antenna system 200, the first antenna 110 includes a first feeding element 116 (which may also be described as "separated") that is unconnected to the first horizontal portion 115, and the first feeding element 116 is configured to access a first transmission signal S10 corresponding to the first wireless signal S1. Between the first feeding assembly 116 and the first horizontal portion 115, signals are transmitted and/or received via wireless coupling (through wireless couplings). The second antenna 120 includes a second feeding component 126 not connected to the second horizontal portion 125, and the second feeding component 126 is configured to access a second transmission signal S20 corresponding to the second wireless signal S2. Between the second feeding assembly 126 and the second horizontal portion 115, signals are transmitted and/or received via wireless coupling.

Fig. 3 shows a cross-sectional view of an antenna system 300 according to another embodiment of the invention. The second reference layer 128 has a notch (opening) 310 (as shown in fig. 3, the notch 310 is located in a lower area of the horizontal portion 125 of the second antenna 120) for adjusting the second frequency band of the second antenna 120, and the second feeding component 126 can also pass through. For example, the notch 310 may allow a portion of the energy of the second wireless signal S2 to be referenced to the first reference layer, so that the notch 310 may increase the bandwidth (bandwidth) of the second frequency band. In fig. 3, the feed assemblies (e.g., 116 and 126) are separated (unconnected) from the radiating portions (e.g., 115 and 125) of the antenna; however, this is merely an example. For an antenna system similar to the antenna system 100 of fig. 1, the second reference layer 128 may also have a notch to adjust the second frequency band.

Fig. 4 shows a cross-sectional view of an antenna system 400 according to another embodiment of the invention. Similarly, the second reference layer 128 may have an annular gap (annular opening) 410 (as shown in fig. 4, the annular gap 410 is located in an area below the horizontal portion 125 of the second antenna 120) for adjusting the second frequency band of the second antenna 120. The annular gap 410 for adjusting the second frequency band may be circular, rectangular, square or other regular or irregular shape in top view. Alternatively, a columnar element 417 may be used to support the surrounding portion (encircled portion) 415 of the annular gap 410. In fig. 4, the feed assemblies (e.g., 116 and 126) are unconnected (i.e., separated) from the radiating portions (e.g., 115 and 125) of the antenna; however, this is merely an example. For an antenna system similar to the antenna system 100 of fig. 1, the second reference layer 128 may also have an annular gap to adjust the second frequency band.

Fig. 5 shows a cross-sectional view of an antenna system 500 according to another embodiment of the invention. The antenna system 500 may also include an electromagnetic bandgap layer (electromagnetic band gap layer) 510 for reducing unwanted surface waves (surface waves) W1 and W2. For example, the electromagnetic bandgap layer may be formed by providing periodically arranged metal blocks (as shown by small squares in fig. 5) in corresponding regions of the substrate, but embodiments of the invention are not limited thereto. Surface waves W1 and W2 interrupt the radiation of antenna system 500, and the performance of antenna system 500 can be improved by reducing surface waves W1 and W2. The electromagnetic bandgap layer 510 may be disposed between the second horizontal portion 125 and the second reference layer 128, but a region 515 (which may also be described as "the electromagnetic bandgap layer 510 has a cavity/aperture 515, i.e., the region 515 is not provided with an electromagnetic bandgap layer") between the second horizontal portion 125 and the second reference layer 128 is left, that is, the region 515 (i.e., the cavity/aperture 515 of the electromagnetic bandgap layer 510) is not filled/provided with the electromagnetic bandgap layer 510 to transmit the second wireless signal S2.

Fig. 6 illustrates a cross-sectional view of an antenna system 600 in accordance with another embodiment of the present invention. Antenna system 600 is similar to antenna system 500. The antenna system 600 may have an electromagnetic bandgap layer 610. The electromagnetic bandgap layer 610 is used to reduce the surface waves W1 and W2, and the electromagnetic bandgap layer 610 is disposed below the first horizontal portion 115 and the second horizontal portion 125 and above the second reference layer 128. In other words, the electromagnetic bandgap layer 610 extends below the first horizontal portion 115, compared to the electromagnetic bandgap layer 510 of fig. 5. As shown in fig. 6, the electromagnetic bandgap layer 610 is also located under the first horizontal portion 115 (that is, the electromagnetic bandgap layer 610 has no cavity/void under the first horizontal portion 115), because the lower frequency band signal can be transmitted through the (through) electromagnetic bandgap layer.

In fig. 1 to 6, the first horizontal part 115 and/or the second horizontal part 125 may be a patch (patch), but the embodiment of the present invention is not limited thereto.

Fig. 7 shows a cross-sectional view of an antenna system 700 according to another embodiment of the invention. Fig. 8 shows a top view of an antenna system 700. In the antenna system 700, the first horizontal portion 115 may have at least one aperture 710, which may also be described as "notch," "aperture," "caliber," or the like. The second horizontal portion 125 may be disposed in the aperture 710. In the example of fig. 7 and 8, the first horizontal portion 115 is shown as having four apertures 710, and the four second horizontal portions 125 are disposed in the four apertures 710, respectively. Accordingly, the plurality of second horizontal portions 125 may be disposed within the boundary (bounds) of the first horizontal portion 115, and it is understood that the second horizontal portion 125 of the second antenna and the first horizontal portion 115 of the first antenna are spaced apart by a gap as shown in fig. 8. Therefore, in the same apparatus, the number of high-frequency antennas may be more than the number of low-frequency antennas, and since the high-frequency antennas and the low-frequency antennas may be arranged in the same area, the layout of the plurality of antennas is more flexible.

According to an embodiment of the present invention, the first horizontal portion 115 of the first antenna 110 and the second horizontal portion 125 of the second antenna 120 may belong to the same conductive layer. In other embodiments, the first horizontal portion 115 may belong to a first conductive layer and the second horizontal portion 125 may belong to a second conductive layer different from the first conductive layer.

Fig. 9 illustrates a cross-sectional view of an antenna system 900 according to another embodiment of the present invention. In fig. 9, the first horizontal portion 115 and the second horizontal portion 125 may be different conductive layers. The top view of the antenna system 900 is similar to fig. 8, wherein each second horizontal portion 125 may be disposed in an aperture of the first horizontal portion 115.

Fig. 10 shows a cross-sectional view of an antenna system 1000 according to another embodiment of the invention. Antenna system 1000 is similar to antenna system 900 and antenna system 1000 also includes an electromagnetic bandgap layer 1010. Electromagnetic bandgap layer 1010 can reduce surface waves W1 and W2 to improve the performance of antenna system 1000. In the example of fig. 10, the region 1015 of the layer 106 below the first and second horizontal portions of the first antenna 110 and above the second reference layer 128 can be left unfilled or provided with the electromagnetic bandgap layer 1010 (i.e., the electromagnetic bandgap layer 1010 has cavities/apertures 1015, the first and second horizontal portions being located within the boundaries of the cavities/apertures 1015 of the electromagnetic bandgap layer 1010) to allow transmission of the second wireless signal S2.

Fig. 11 illustrates a cross-sectional view of an antenna system 1100 in accordance with another embodiment of the present invention. In the antenna system 1100, the first antenna 110 may further include a third horizontal portion 113, and the second antenna 120 may further include a fourth horizontal portion 124, as compared to the antenna system described above. The third horizontal portion 113 may be used to access the third wireless signal S3. The third wireless signal S3 may be in a third frequency band, wherein frequencies in the third frequency band may be lower than frequencies in the second frequency band. The fourth horizontal portion 124 may be used to access the fourth wireless signal S4. The fourth wireless signal S4 may be located in a fourth frequency band, wherein frequencies in the fourth frequency band may be higher than frequencies in the first frequency band and frequencies in the third frequency band. The antenna system 1100 can optionally include an electromagnetic bandgap layer 1010 to reduce the surface waves W1 and W2, however, the electromagnetic bandgap layer 1010 can be omitted if performance is good enough.

Fig. 12 shows a plot of the dispersion parameter (scattering parameters) of the antenna system 1100 of fig. 11. Curve C1 represents the dispersion parameter of the first antenna 110, and curve C2 represents the dispersion parameter of the second antenna 120. Trough (gauge) LB1 may correspond to the first frequency band, trough LB2 may correspond to the third frequency band, wherein trough LB2 may be generated by the third horizontal portion 113. Trough HB1 may correspond to a second frequency band and trough HB2 may correspond to a fourth frequency band, wherein trough HB2 may be created by fourth horizontal portion 124. Accordingly, the frequency band of the first antenna 110 may be widened by the third horizontal portion 113, and the frequency band of the second antenna 120 may be widened by the fourth horizontal portion 124.

In fig. 11 and 12, both the first antenna 110 and the second antenna 120 include two horizontal portions. However, in other examples, one of the first antenna 110 and the second antenna 120 may include two horizontal portions, and the other of the first antenna 110 and the second antenna 120 may have only one horizontal portion, which the present invention is not limited to.

Fig. 13 shows a top view of an antenna system 1300 according to another embodiment of the invention. In fig. 13, the first horizontal portion 115 is in a cross shape and includes 4 fins (fins), and each of the second horizontal portions 125 is disposed in a region surrounded by two adjacent fins of the first horizontal portion 115. Thus, in the same device, the number of high-frequency antennas may be more than the number of low-frequency antennas, and the layout of the antennas is more flexible.

Fig. 14 shows a cross-sectional view of an antenna system 1400 according to another embodiment of the invention. The first horizontal portion 115 may include a first arm (arm) 1151 and a second arm 1152. The first antenna 110 may further include a first feeding assembly 116, where the first feeding assembly 116 is separated from the first arm 1151 and the second arm 1152 for accessing the first transmission signal S10 corresponding to the first wireless signal S1. In fig. 14, the horizontal portion 125 of the second antenna 120 is connected with its respective feed assembly, but, in some variant embodiments, the second horizontal portion 125 may similarly comprise a first arm and a second arm, and the respective second feed assembly of the second antenna 120 is separated from the first arm and the second arm of the second horizontal portion 125 for accessing the second transmission signal S20 corresponding to the second wireless signal S2.

Each of the first antenna 110 and the second antenna 120 may include a patch antenna (patch antenna), a dipole antenna (dipole antenna), a planar inverted-F antenna (PIFA), a monopole antenna (monopole antenna), a slot antenna (slot antenna), and/or an aperture antenna (aperture antenna).

Fig. 15 shows a top view of an antenna system 1500 according to another embodiment of the invention. In fig. 15, some of the second antennas 120 are surrounded by the first antennas 110, and others of the second antennas 120 are disposed outside the boundaries of the first antennas 110. Accordingly, the number of second antennas 120 may be greater than the number of first antennas 110. The antenna system 1500 may include m first antennas 110 and n second antennas 120, m and n being integers greater than 1, and m < n. In the antenna system 1500, a first wireless signal S1 accessed by the first antenna 110 may be transmitted and/or received over the air through the first horizontal portion 115 and the first reference layer 118, and a second wireless signal S2 accessed by the second antenna 120 may be transmitted and/or received over the air through the second horizontal portion 125 and the second reference layer 128. Thus, the second antenna 120 (for accessing wireless signals of a higher frequency band) may form an antenna array having more antennas than an antenna array formed using the first antenna 110.

Fig. 16 illustrates a cross-sectional view of an antenna system 1600 in accordance with another embodiment of the present invention. The antenna system 1600 is similar to the antenna system 100 of fig. 1; however, the second reference layer 128 is disposed below the second horizontal portion 125 without/without being located below the first horizontal portion 115. Accordingly, the area of the second reference layer 128 can be determined.

In summary, by providing the second reference layer 128, the first antenna 110 of the lower frequency band and the second antenna 120 of the higher frequency band can be provided in the same area, and the number of the second antennas 120 may be greater than the number of the first antennas 110. The present invention also provides a solution for reducing unwanted surface waves to improve performance. In applications such as 5G millimeter wave (mmWave) technology, the antenna system described above (e.g., by the second reference layer 128) can reduce problems such as low antenna efficiency, large antenna pattern distortion, mutual coupling between different antenna arrays, weak resonance, and low antenna gain.

In the claims, ordinal terms such as "first," "second," "third," etc., are used to modify a claim element, and do not by itself connote any priority, precedence, or order of one claim element over another or the temporal order in which acts of a method are performed, but are used merely as labels to distinguish one claim element having a same name from another element having a same name using the ordinal term.

While the invention has been described by way of example and in terms of preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. On the contrary, it is intended to cover various modifications and similar arrangements (as will be apparent to those skilled in the art), e.g., combinations or alternatives of the different features in the different embodiments. The scope of the following claims is, therefore, to be accorded the broadest interpretation so as to encompass all such modifications and similar structures.

Claims

1. An antenna system, comprising:

a first antenna including a first horizontal portion and configured to access a first wireless signal transmitted and/or received through the first horizontal portion and a first reference layer; the method comprises the steps of,

a second antenna comprising a second horizontal portion and configured to access a second wireless signal transmitted and/or received through the second horizontal portion and a second reference layer different from the first reference layer;

the first wireless signal is in a first frequency band, the second wireless signal is in a second frequency band, and the frequency in the second frequency band is higher than the frequency of the first frequency band.

2. The antenna system of claim 1, wherein a vertical distance between the first horizontal portion and the first reference layer is greater than a vertical distance between the second horizontal portion and the second reference layer.

3. The antenna system of claim 1, wherein:

the first antenna further comprises a first feeding component which is separated from or connected with the first horizontal part and is used for accessing a first transmission signal corresponding to the first wireless signal; the method comprises the steps of,

the second antenna further comprises a second feeding component which is separated from or connected with the second horizontal part and is used for accessing a second transmission signal corresponding to the second wireless signal.

4. The antenna system of claim 1, wherein:

the second antenna further comprises a feeding component which is separated from or connected with the second horizontal part and is used for accessing a second transmission signal corresponding to the second wireless signal; the method comprises the steps of,

the second reference layer is provided with a notch for adjusting the second frequency band.

5. The antenna system of claim 1 wherein the second reference layer has an annular notch for adjusting the second frequency band.

6. The antenna system of claim 1, wherein the antenna system further comprises:

an electromagnetic bandgap layer configured to reduce surface waves and disposed between the second horizontal portion and the second reference layer.

7. The antenna system of claim 1, wherein the antenna system further comprises:

an electromagnetic bandgap layer configured to reduce surface waves and disposed below the first horizontal portion and the second horizontal portion and above the second reference layer.

8. The antenna system of claim 1, wherein the first horizontal portion and/or the second horizontal portion is a patch.

9. The antenna system of claim 1, wherein:

the first horizontal part is provided with a hole; the method comprises the steps of,

the second horizontal portion is disposed within the aperture.

10. The antenna system of claim 1, wherein the first horizontal portion and the second horizontal portion are of the same conductive layer.

11. The antenna system of claim 1, wherein the first horizontal portion belongs to a first conductive layer and the second horizontal portion belongs to a second conductive layer different from the first conductive layer.

12. The antenna system of claim 1, wherein the antenna system further comprises:

an electromagnetic bandgap layer configured to reduce surface waves;

the electromagnetic band gap layer is arranged below the first horizontal part and the second horizontal part and above the second reference layer, the electromagnetic band gap layer is provided with a pore, and the first horizontal part and the second horizontal part are positioned in the boundary of the pore.

13. The antenna system of claim 1, wherein the first antenna further comprises:

and a third horizontal portion configured to access a third wireless signal, the third wireless signal being in a third frequency band, the third frequency band having a frequency lower than the second frequency band.

14. The antenna system of claim 1 wherein the ratio of the highest frequency of the second frequency band to the lowest frequency of the first frequency band is greater than 2.

15. The antenna system of claim 1, wherein the second antenna further comprises:

and a fourth horizontal portion configured to access a fourth wireless signal, the fourth wireless signal being in a fourth frequency band, the fourth frequency band having a frequency higher than the frequency in the first frequency band.

16. The antenna system of claim 1, wherein the first horizontal portion is cross-shaped and includes four fins, and wherein the second horizontal portion is disposed in a region enclosed by two adjacent fins of the first horizontal portion.

17. The antenna system of claim 1, wherein:

the first horizontal portion includes a first arm and a second arm; the method comprises the steps of,

the first antenna also comprises a feeding component which is not connected with the first arm and the second arm, and the feeding component is used for accessing the transmission signal corresponding to the first wireless signal.

18. The antenna system of claim 1, wherein:

the second horizontal portion includes a first arm and a second arm; the method comprises the steps of,

the second antenna also comprises a feeding component which is not connected with the first arm and the second arm and is used for accessing the transmission signal corresponding to the second wireless signal.

19. The antenna system of claim 1, wherein each of the first antenna and the second antenna comprises a patch antenna, a dipole antenna, a planar inverted-F antenna, a monopole antenna, a slot antenna, and/or an aperture antenna.

20. An antenna system, comprising:

m first antennas, each first antenna comprising a first horizontal portion and configured to access a first wireless signal, wherein the first wireless signal is transmitted and/or received through the first horizontal portion and a first reference layer; the method comprises the steps of,

n second antennas, each second antenna comprising a second horizontal portion and configured to access a second wireless signal, wherein the second wireless signal is transmitted and/or received through the second horizontal portion and a second reference layer different from the first reference layer;

wherein the first wireless signal is in a first frequency band, the second wireless signal is in a second frequency band, the frequency in the second frequency band is higher than the frequency in the first frequency band, and m and n are integers greater than 1 and m < n.