Antenna device and wireless transceiver comprising the same

Abstract

A dual-resonant antenna device is provided, exhibiting improved impedance bandwidth, cross-polarization, and isolation, and is less susceptible to spurious surface wave excitation. More specifically, at least one antenna element and a resonant structure are provided on a non-conductive substrate, such that at least one continuous conductive sidewall of the resonant structure surrounds the one or more antenna elements, forming a resonant cavity filled with a dielectric material covering the one or more antenna elements. Each antenna element is used to excite a TM mode, while the dielectric material and size of the resonant cavity are selected such that the resonant structure is used to excite a TE mode. In a preferred embodiment, the TM mode is a TM 01 mode, and the TE mode is a TE 111 mode.

Description

Technical Field

[0001] This invention generally relates to the field of wireless antennas. Specifically, the invention relates to an antenna device for exciting transverse electric (TE) and transverse magnetic (TM) modes while suppressing the excitation of spurious surface waves, and a wireless transceiver including said antenna device. Background Technology

[0002] Although the number of antennas in mobile user equipment (UE) (e.g., mobile phones, handheld devices, etc.) is increasing, the volume reserved for antennas remains the same or even decreases. Therefore, the size of the antenna should be as small as possible. In addition, the antenna should have an aesthetically pleasing appearance and preferably be invisible to the user.

[0003] Traditional patch antennas are single-resonant structures, making it difficult to meet impedance bandwidth requirements. The normal component of the electric field dominates in patch antennas, easily exciting surface waves in mobile UEs, leading to distortion of the main radiation beam. The bandwidth of patch antennas can be increased by introducing a dual-resonant structure. Dual resonance can be achieved using a resonant cavity. The patch antenna itself provides the first resonance, while the cavity wall provides the second resonance. However, this dual-resonant structure has drawbacks: its thickness is relatively large, and slots need to be cut in the cavity wall to achieve the second resonance. In practical applications, slot design is challenging, especially when dual-fed and dual-band are required. Furthermore, the dual-resonant structure with slots in the cavity wall will still excite stray surface waves due to the dominance of the normal component of the electric field.

[0004] Dielectric resonator antennas (DRAs) offer a potential alternative with smaller antenna apertures. They feature dual polarization and maximally suppress stray surface wave excitation. However, DRAs are typically thick and usually limited to single resonances, resulting in a narrow impedance bandwidth. Summary of the Invention

[0005] This invention has briefly introduced some concepts, which will be further described in the specific embodiments below. This invention is not intended to define the key features of the invention, nor is it intended to limit the scope of the invention.

[0006] The purpose of this invention is to provide a dual-resonant antenna structure that exhibits improved impedance bandwidth, cross-polarization and isolation, and is less susceptible to excitation by stray surface waves.

[0007] The above objective is achieved through the features of the independent claim in the appended claims. Other embodiments and examples will be apparent from the dependent claims, detailed description, and drawings.

[0008] According to a first aspect, an antenna device is provided, comprising a non-conductive substrate, at least one antenna element disposed on the non-conductive substrate, and a resonant structure disposed on the non-conductive substrate. Each of the at least one antenna element is used to excite a TM mode. The resonant structure has at least one continuous conductive sidewall surrounding each of the at least one antenna element and a cavity formed by the at least one continuous conductive sidewall. The cavity is filled with a first dielectric material covering each of the at least one antenna element. The dimensions of the first dielectric material and the cavity are selected such that the resonant structure is used to excite a TE mode. Therefore, the antenna device can be used to provide one resonance in the TE mode and another resonance in the TM mode, i.e., it can operate as a dual-resonant structure. In the configured antenna device, due to the presence of a cavity filled with dielectric material and without slots and having one or more sidewalls, the normal component of the electric field is minimized, thereby suppressing the excitation of stray surface waves in the antenna device. It should be noted that the TE mode can be efficiently tuned by changing all dimensions of the cavity or only the dimensions of the cavity in the XY plane (e.g., when the dimensions of the cavity in the Z direction are fixed due to some limitations imposed on the thickness of the antenna device). Therefore, the antenna device can exhibit improved impedance bandwidth, cross-polarization, and isolation. Furthermore, the antenna device exhibits good mechanical strength because there are no gaps or slots on the one or more sidewalls of the resonant structure.

[0009] In an exemplary embodiment of the first aspect, the TM mode is the TM 01 mode and the TE mode is the TE 111 mode. Therefore, the antenna device according to the first aspect can combine two fundamental resonant modes, TM 01 and TE 111, thereby providing a wide impedance bandwidth. Furthermore, these TM and TE modes may be needed to meet certain specific requirements in the field of wireless communication.

[0010] In an exemplary embodiment of the first aspect, each of the at least one antenna element is configured as a patch antenna. Patch antennas are characterized by their compact size and are among the simplest antenna designs. Furthermore, such antennas provide a simple polarization transmission scheme, especially at high frequencies. Therefore, patch antennas are easy to design and manufacture, which simplifies the manufacturing process of the antenna assembly.

[0011] In an exemplary embodiment of the first aspect, the patch antenna is a doubly-fed patch antenna. In this case, doubly-fed means dual-polarized. That is, the doubly-fed patch antenna can have tilted or linear polarization. Dual polarization also implies multiple-input multiple-output (MIMO) characteristics, which can be used to improve link quality through diversity gain or to increase data rate through spatial multiplexing gain. Diversity is typically used for conditions with severe channel fading (i.e., low signal-to-noise ratio (SNR)), while spatial multiplexing is used for high SNR conditions.

[0012] In an exemplary embodiment of the first aspect, the dielectric constant of the first dielectric material is between 2 and 15. These dielectric materials can provide better TE (especially TE 111) mode excitation in the antenna device.

[0013] In an exemplary embodiment of the first aspect, the first dielectric material includes a substrate dielectric and an array of metal patches embedded in the substrate dielectric. Introducing the metal patches into the dielectric material introduces a certain capacitance, which is equivalent to increasing the dielectric constant of the substrate. If the substrate material is fixed, for example fixed as… Furthermore, it is advantageous if the thickness of the antenna device is also fixed. In this case, the substrate can be artificially increased by using an array of metal patches in the substrate dielectric. This is done to tune the TE mode resonance to the desired frequency.

[0014] In an exemplary embodiment of the first aspect, the antenna device further includes at least one second dielectric material covering the first dielectric material. Each of the at least one second dielectric material has a dielectric constant of 3 to 30. The at least one second dielectric material can be used to additionally tune the TE mode excited by the resonant structure. It should be noted that the at least one second dielectric material can be part of the mobile UE so as not to increase the thickness of the antenna device. For example, the second dielectric material can refer to certain portions of the display glass and / or camera lens that can be used in the mobile UE.

[0015] In an exemplary embodiment of the first aspect, the non-conductive substrate is configured as a printed circuit board (PCB) having a cavity disposed beneath the cavity of the resonant structure. The cavity of the PCB is filled with a third dielectric material, and each of the at least one antenna element is disposed on the third dielectric material. The presence of such an (optional) dielectric-filled cavity in the PCB can additionally improve the performance of the antenna device, i.e., improve the excitation of the TM and TE modes therein. Furthermore, the cavity of the PCB allows the one or more antenna elements to be fed from below, thereby making the antenna device more compact.

[0016] In an exemplary embodiment of the first aspect, the dielectric constant of the third dielectric material is between 2 and 8. These dielectric materials can provide better TE (especially TE 111) mode excitation in the antenna device.

[0017] According to a second aspect, a wireless transceiver is provided. The wireless transceiver includes at least one antenna device according to a first aspect, a transmitting unit, and a receiving unit. The transmitting unit is coupled to the at least one antenna device for generating and transmitting wireless signals through the at least one antenna device. The receiving unit is coupled to the at least one antenna device for receiving wireless signals through the at least one antenna device and performing signal processing on the received wireless signals. Therefore, the configured wireless transceiver can operate over a wide bandwidth using both TE and TM modes.

[0018] Other features and advantages of the invention will become apparent after reading the following detailed description and reviewing the accompanying drawings. Attached Figure Description

[0019] The invention is explained below with reference to the accompanying drawings, wherein:

[0020] Figure 1A and Figure 1B An isometric cross-sectional view of an antenna device according to a first exemplary embodiment is shown, namely: Figure 1A An antenna device with a cavity and resonant structure is shown. Figure 1B An antenna device is shown when the cavity of the resonant structure is filled with dielectric material.

[0021] Figure 2 An isometric cross-sectional view of an antenna device according to a second exemplary embodiment is shown, which differs from the first exemplary embodiment in that it has an additional dielectric material covering the cavity and sidewalls of the resonant structure.

[0022] Figure 3An isometric cross-sectional view of an antenna device according to a third exemplary embodiment is shown, which differs from the first exemplary embodiment in that an additional cavity filled with dielectric material is provided in the non-conductive substrate below the antenna element.

[0023] Figure 4A and Figure 4B An antenna device according to a fourth exemplary embodiment is shown, which differs from the first to third exemplary embodiments in that it has a conformal antenna array, namely: Figure 4A An isometric sectional view of the antenna assembly is shown. Figure 4B An isometric partial view of the antenna assembly is shown (all dielectric material has been removed).

[0024] Figure 5 The curves showing the S-parameters (i.e., S11 and S21) of the antenna device according to the invention as a function of frequency in the low-frequency band are shown.

[0025] Figure 6 The curves showing the S-parameters (i.e., S11 and S21) of the antenna device according to the invention in the high-frequency band as a function of frequency are shown.

[0026] Figure 7 A block diagram of a wireless transceiver according to an exemplary embodiment is shown. Detailed Implementation

[0027] Various embodiments of the invention have been described in further detail with reference to the accompanying drawings. However, the invention may be embodied in many other forms and should not be construed as limited to any particular structure or function disclosed in the following description. Rather, these embodiments are provided to describe the invention in detail and completely.

[0028] As will be apparent to those skilled in the art from the specific embodiments described herein, the scope of this invention covers any embodiment disclosed herein, whether implemented independently or in conjunction with any other embodiments of the invention. For example, the apparatus disclosed herein can be implemented in practice using any number of the embodiments provided herein. Furthermore, it should be understood that any embodiment of the invention can be implemented using one or more features set forth in the appended claims.

[0029] The term "exemplary" is used herein to mean "as an illustration." Unless otherwise stated, any embodiment described herein as "exemplary" should not be construed as preferred or advantageous over other embodiments.

[0030] Any positioning terms, such as “left,” “right,” “top,” “bottom,” “above,” “below,” “horizontal,” “vertical,” etc., may be used herein to conveniently describe the relationship of an element or feature according to the accompanying drawings to one or more other elements or features. It should be understood that, in addition to the one or more orientations depicted in the figures, positioning terms are intended to encompass different orientations of the device disclosed herein. For example, if the device in the figures is envisioned to be rotated 90 degrees clockwise, the elements or features described as “left” and “right” relative to other elements or features would be oriented as “above” and “below”, respectively. Therefore, the positioning terms used herein should not be construed as any limitation on the invention.

[0031] Although this document may use counting terms such as "first," "second," "third," "fourth," etc., to describe various embodiments and features, these embodiments and features should not be limited by such counting terms. The counting terms used herein are merely for distinguishing one feature or embodiment from another. For example, a first dielectric material may be renamed a second dielectric material, and vice versa, without departing from the teachings of the invention.

[0032] The exemplary embodiments disclosed herein provide a dual-resonant antenna structure exhibiting improved impedance bandwidth, cross-polarization, and isolation, and is less susceptible to spurious surface wave excitation. More specifically, at least one antenna element and a resonant structure are provided on a non-conductive substrate, such that at least one continuous conductive sidewall of the resonant structure surrounds one or more antenna elements, forming a resonant cavity filled with a dielectric material covering the one or more antenna elements. Each antenna element is used to excite a TM mode, while the dielectric material and size of the resonant cavity are selected such that the resonant structure is used to excite a TE mode. In a preferred embodiment, the TM mode is a TM 01 mode, and the TE mode is a TE 111 mode.

[0033] Figure 1A and Figure 1B An isometric cross-sectional view of an antenna device 100 according to a first exemplary embodiment is shown. The antenna device 100 includes a non-conductive substrate 102 and an antenna element 104 disposed on the substrate 102. The antenna element 104 is used to excite a TM mode and can therefore be implemented as a patch antenna. The antenna device 100 also includes a resonant structure disposed on the (top) surface of the same substrate 102 as the antenna element 104. The resonant structure includes conductive (e.g., metallic) sidewalls 106 surrounding the antenna element 104 and forming a rectangular cavity 108 (see...). Figure 1A The cavity is used to fill dielectric material 110 (see...) Figure 1BAs shown in the figure, the antenna element 104 is located at the bottom of the cavity 108, such that its thickness is less than the total thickness of the antenna assembly 100. The conductive sidewall 106 is continuous, i.e., without any gaps or slots. The cavity 108, filled with dielectric material 110, can be considered as the DRA for exciting the TE mode. More specifically, the horizontal xy dimension and vertical z dimension of the cavity 108 define the TE mode according to the following equation:

[0034]

[0035] in, It is the resonant frequency of the TE mode. It's the speed of light. It is the dielectric constant of dielectric material 110. This is the dimension of cavity 108 on the y-axis. This is the dimension of cavity 108 on the x-axis. It is the dimension of cavity 108 on the z-axis.

[0036] Therefore, by appropriately selecting parameters , , and This allows for the tuning of the TE mode excited by the resonant structure in the antenna device 100. Preferably, the dielectric constant of the dielectric material 110 is... The range is 2 to 15.

[0037] In some embodiments, if It is fixed (i.e., the height of cavity 108 cannot be changed, for example, due to the limited volume available in a specific mobile UE such as a smartphone), but can be changed by altering the horizontal xy dimensions of cavity 108 and the dielectric material 110. To tune the TE mode. Simultaneously, appropriate [tuning / adjustment] can also be achieved by using artificial dielectric materials as dielectric material 110. Such artificial dielectric materials may include a substrate dielectric and an array of metal patches embedded in the substrate dielectric to provide an appropriate relative permittivity.

[0038] It should be noted that Figure 1A and Figure 1BThe number, arrangement, and shape of the structural elements constituting the antenna device 100 shown are not intended to limit the invention, but merely to provide a general idea of ​​how such structural elements can be implemented within the antenna device 100. For example, there may be more than one antenna element 104 arranged adjacent to each other on the substrate 102, wherein each antenna element 104 is implemented as a planar antenna (e.g., microstrip antenna, slot antenna, patch antenna, etc.) or a non-planar antenna (e.g., rectangular waveguide antenna). Furthermore, the cavity 108 can be any polygonal (e.g., triangular, pentagonal, etc.) or curved (e.g., elliptical, circular, etc.) shape. For example, if the cavity 108 is circular, there is a single continuous conductive sidewall 106 surrounding one or more antenna elements 104. Furthermore, the continuous conductive sidewall 106 does not necessarily need to cover the entire area of ​​the substrate 102 outside the cavity 108; in other words, the continuous conductive sidewall 106 can be made thinner (e.g., Figure 1A (shown by the dashed line).

[0039] Figure 2 An isometric cross-sectional view of an antenna device 200 according to a second exemplary embodiment is shown. Similar to antenna device 100, antenna device 200 includes a non-conductive substrate 202, and an antenna element 204 and a resonant structure disposed on the same surface of the substrate 202. Similarly, the resonant structure includes continuous conductive sidewalls 206 surrounding the antenna element 204 and forms a rectangular cavity filled with a first dielectric material 208 covering the antenna element 204. However, unlike antenna device 100, antenna device 200 also includes a second dielectric material 210 covering the cavity and sidewalls 206 of the resonant structure. The dielectric constant of the second dielectric material 210 is between 3 and 30. Likewise, the antenna element 204 is used to excite TM modes (e.g., TM 01), while the resonant structure is used to excite TE modes (e.g., TE 111). It should be noted that the TE mode is created in the antenna device 200 by the entire dielectric volume above the antenna element 204 (i.e., the combination of the first dielectric material 208 and the second dielectric material 210), and the cavity formed by the sidewall 206 actually determines its xy dimensions (e.g., even if the second dielectric material 210 and / or any other dielectric material above the cavity not only completely covers the cavity itself, but also completely covers the sidewall 206).

[0040] In some embodiments, the second dielectric material 210 may be part of a dielectric component in a mobile UE for mounting the antenna device 200. For example, the dielectric component may be a display glass and / or a camera lens used in the UE.

[0041] It should also be noted that the second dielectric material 210 may be arranged such that it only partially covers the sidewall 206 or does not cover the sidewall 206 at all (i.e., the second dielectric material 210 may be arranged only on the first dielectric material 208).

[0042] Figure 3 An isometric cross-sectional view of an antenna device 300 according to a third exemplary embodiment is shown. Similar to antenna devices 100 and 200, antenna device 300 includes a non-conductive substrate 302, and an antenna element 304 and a resonant structure disposed on the same surface of the substrate 302. Similarly, the resonant structure includes a continuous conductive sidewall 306 surrounding the antenna element 304 and forms a rectangular cavity filled with a first dielectric material 308 covering the antenna element 304. Likewise, the antenna element 304 is used to excite a TM mode (e.g., TM 01), while the resonant structure is used to excite a TE mode (e.g., TE 111). Antenna device 300 differs from antenna devices 100 and 200 in that an additional cavity is provided in the substrate 302 below the antenna element 304. The additional cavity is filled with an additional dielectric material 310, preferably with a dielectric constant of 2 to 8. For example, such an additional cavity can be fabricated in a PCB used as the substrate 302. In addition, one or more feed lines can pass through the dielectric material 310 to reach the antenna element 304.

[0043] It should be noted that the device 300 may also be provided with an additional dielectric material (i.e., dielectric material 308) covering the cavity. In other words, for example, such an additional dielectric material may be implemented as the second dielectric material 210 in the antenna device 200.

[0044] Figure 4A and Figure 4B An antenna device 400 according to a fourth exemplary embodiment is shown. More specifically, Figure 4A An isometric sectional view of the antenna device 400 is shown. Figure 4B An isometric partial view of antenna device 400 is shown. Unlike antenna devices 100 to 300, antenna device 400 includes a non-conductive substrate 402 and an array of antenna elements 404 disposed thereon (e.g., a patch antenna). Antenna device 400 also includes a resonant structure implemented such that each antenna element 404 is surrounded by a continuous conductive sidewall 406 of the resonant structure. The sidewall 406 forms an array of rectangular cavities 408 (see...). Figure 4B Each cavity is filled with a first dielectric material 410 covering the antenna element 404. Similarly, each antenna element 404 is used to excite the TM mode (e.g., TM 01), while each cavity 408 of the resonant structure is used to excite the TE mode (e.g., TE 111). Figure 4AAs shown, the antenna device 400 also includes a second dielectric material 412, which is attached to the first dielectric material 410, for example, by tape 414 or any other adhesive or means (e.g., glue). For example, the first dielectric material 410 and the second dielectric material 412 may be implemented in the same or similar manner as the first dielectric material 208 and the second dielectric material 210, respectively. Furthermore, the substrate 402 includes an array of additional cavities, each cavity formed beneath a corresponding antenna element 404 and filled with a third dielectric material 416 that is the same as or similar to the third dielectric material 310.

[0045] Figure 5 The curves showing the S-parameters (i.e., S11 and S21) of the antenna device according to the invention as a function of frequency in the low-frequency band are shown. More specifically, the antenna device for the low-frequency band has been implemented as a combination of devices 200 and 300 (i.e., using dielectric materials 210 and 310 in combination):

[0046] The antenna element, implemented as a patch antenna, has a size of 1.8 mm × 1.8 mm;

[0047] The dielectric constant of the third dielectric material (i.e., dielectric material 310) below the antenna element is 6.15;

[0048] The dielectric constant of the first dielectric material covering the antenna element in the cavity of the resonant structure is 3.

[0049] The dielectric constant of the second dielectric material covering the first dielectric material is 14.5;

[0050] The cavity of the resonant structure has XY dimensions of 2.2 mm × 2.2 mm and Z dimension of 0.5 mm.

[0051] As shown in the figure, the TM 01 mode resonance occurs at approximately 25 GHz, while the TE 111 mode resonance occurs at approximately 29 GHz.

[0052] Figure 6 The curves showing the S-parameters (i.e., S11 and S21) of the antenna device according to the invention in the high-frequency band as a function of frequency are shown. More specifically, the antenna device for the high-frequency band has also been implemented as a combination of devices 200 and 300 (i.e., using dielectric materials 210 and 310 in combination):

[0053] The antenna element, implemented as a patch antenna, has a size of 1.6 mm × 1.6 mm;

[0054] The dielectric constant of the third dielectric material (i.e., dielectric material 310) below the antenna element is 3;

[0055] The dielectric constant of the first dielectric material covering the antenna element in the cavity of the resonant structure is 3.

[0056] The dielectric constant of the second dielectric material covering the first dielectric material is 6.2;

[0057] The cavity of the resonant structure has XY dimensions of 2.2 mm × 2.2 mm and Z dimension of 0.6 mm.

[0058] As shown in the figure, the TM 01 mode resonance occurs at 35 GHz, while the TE 111 mode resonance occurs at 41 GHz.

[0059] Figure 7A block diagram of a wireless transceiver 700 according to an exemplary embodiment is shown. As used in the embodiments disclosed herein, a wireless transceiver can refer to a means for performing data reception and transmission via radio waves. Radio waves can refer to electromagnetic radiation occurring in different frequency bands of the radio spectrum (e.g., in the centimeter-wave (cmWave) and millimeter-wave (mmWave) bands). For example, radio waves have been used for wireless communications, such as point-to-point communication, inter-satellite links, and point-to-multipoint communication. However, the applications of radio waves are not limited to wireless communications; they can also be used for vehicle navigation and control (air, ground, or sea), road obstacle detection, distance ranging (radar applications), non-contact vital sign monitoring, occupancy detection, etc. For this purpose, the wireless transceiver 700 can be used in the same application scenarios as radio waves. Furthermore, the wireless transceiver 700 can be implemented as part of user equipment (UE), which can refer to wireless customer premises equipment (CPE) (e.g., wireless routers, switches, etc.), mobile devices, mobile stations, terminals, user units, mobile phones, cellular phones, smartphones, cordless phones, personal digital assistants (PDAs), wireless communication devices, desktop computers, laptops, tablets, single-board computers (SBCs) (e.g., Raspberry Pi devices), gaming devices, netbooks, smartbooks, ultrabooks, medical devices or medical equipment, biometric sensors, wearable devices (e.g., smartwatches, smart glasses, smart wristbands, etc.), entertainment devices (e.g., audio players, video players, etc.), vehicle components or sensors (e.g., driver assistance systems), smart meters / sensors, unmanned vehicles (e.g., industrial robots, quadcopters, etc.) and their components (e.g., autonomous vehicle computers), industrial manufacturing equipment, and global positioning systems. System (GPS) devices, Internet of Things (IoT) devices, Industrial IoT (IIoT) devices, Machine-type Communication (MTC) devices, a group of Massive IoT (MIoT) or Massive MTC (mMTC) devices / sensors, or any other suitable device that operates using radio waves. In some embodiments, a UE may refer to at least two juxtaposed and interconnected UEs as defined in this way.

[0060] like Figure 7 As shown, the wireless transceiver 700 includes an antenna device 702, a transmit (TX) unit 704, and a receive (RX) unit 706. The antenna device 702 can be implemented as any one of antenna devices 100 to 400 or any combination thereof. The TX unit 704 is coupled to the antenna device 702 for generating and transmitting wireless signals through the antenna device 702. The RX unit 706 is coupled to the antenna device 702 for receiving wireless signals through the antenna device 702 and performing signal processing (e.g., appropriate decoding) on ​​the received wireless signals.

[0061] Although exemplary embodiments of the invention have been described herein, it should be noted that various changes and modifications may be made to the embodiments of the invention without departing from the scope of legal protection defined by the appended claims. In the appended claims, the word "comprising" does not exclude other elements or steps, and the terms "a" or "an" do not exclude multiple. The enumeration of certain measures in dissimilar dependent claims does not imply that combinations of these measures cannot be used advantageously.

Claims

1. An antenna device, characterized in that, include: Non-conductive substrate; At least one antenna element is disposed on the non-conductive substrate, each of the at least one antenna element being used to excite a transverse magnetic (TM) mode; The resonant structure disposed on the non-conductive substrate has at least one continuous conductive sidewall surrounding each of the at least one antenna element and a cavity formed by the at least one continuous conductive sidewall. The cavity is filled with a first dielectric material, which covers each of the at least one antenna element. The dimensions of the first dielectric material and the cavity are selected such that the resonant structure is used to excite the transverse electrical (TE) mode.

2. The antenna device according to claim 1, characterized in that, The TM module is the TM 01 module, and the TE module is the TE111 module.

3. The antenna device according to claim 1 or 2, characterized in that, Each of the at least one antenna element is configured as a patch antenna.

4. The antenna device according to claim 3, characterized in that, The patch antenna is a doubly fed patch antenna.

5. The antenna device according to any one of claims 1 to 4, characterized in that, The dielectric constant of the first dielectric material is between 2 and 15.

6. The antenna device according to any one of claims 1 to 5, characterized in that, The first dielectric material includes a substrate dielectric and an array of metal patches embedded in the substrate dielectric.

7. The antenna device according to any one of claims 1 to 6, characterized in that, It also includes at least one second dielectric material covering the first dielectric material, each of the at least one second dielectric material having a dielectric constant of 3 to 30.

8. The antenna device according to any one of claims 1 to 7, characterized in that, The non-conductive substrate is configured as a printed circuit board (PCB), the PCB having a cavity disposed below the cavity of the resonant structure, the cavity of the PCB being filled with a third dielectric material, and each of the at least one antenna element being disposed on the third dielectric material.

9. The antenna device according to claim 8, characterized in that, The dielectric constant of the third dielectric material is between 2 and 8.

10. A wireless transceiver, characterized in that, include: At least one antenna device according to any one of claims 1 to 9; A transmitting unit, coupled to the at least one antenna device, the transmitting unit being configured to generate a wireless signal and transmit the generated wireless signal through the at least one antenna device; A receiving unit, coupled to the at least one antenna device, the receiving unit being configured to receive wireless signals through the at least one antenna device and perform signal processing on the received wireless signals.

Images