CN115425399A - Miniaturized combined antenna and communication device - Google Patents

Abstract

The invention provides a miniaturized combined antenna and a communication device, and relates to the field of antennas. The miniaturized combined antenna comprises a first radiation patch, a first dielectric layer, a second radiation patch, a second dielectric layer, a third radiation patch, a third dielectric layer, a fourth radiation patch, a fourth dielectric layer and a fifth radiation patch. The first radiation patch is arranged on the first medium layer to form a first radiation unit; the second radiation patch is arranged between the first dielectric layer and the second dielectric layer and used as a reference ground of the first radiation unit to form a second radiation unit; the third radiating patch is arranged between the third medium layer and the second medium layer to form a third radiating unit; the fourth radiation patch is arranged between the third medium layer and the fourth medium layer and is used as a reference ground of the third radiation unit to form a fourth radiation unit; the fourth dielectric layer is provided with a short circuit hole array, and the fifth radiation patch is used for grounding the short circuit hole array. The invention can reduce the size of the antenna, and is beneficial to realizing the miniaturization and low cost of the combined antenna.

Description

Miniaturized combined antenna and communication device

Technical Field

The invention relates to the field of antennas, in particular to a miniaturized combined antenna and a communication device.

Background

With the increasing functions of electronic devices, integrated communication modes are increasing, such as a GNSS (Global Navigation Satellite System) antenna, which is used for receiving Satellite signals to implement Global Navigation positioning, and a network antenna to implement 4G or 5G network communication. In the existing combined antenna integrated with multiple functions, the isolation among the antennas is usually realized by design steps, so that the processing is relatively complex, and the processing cost is increased; at the same time, this approach is not conducive to achieving the miniaturization requirement of the combined antenna at the expense of the antenna size.

Disclosure of Invention

The embodiment of the invention discloses a miniaturized combined antenna and a communication device, which can reduce the size of the antenna and are beneficial to realizing the miniaturization and low cost of the combined antenna.

In a first aspect, the present invention discloses a miniaturized combined antenna, comprising:

a first dielectric layer;

the first radiation patch is arranged on the upper surface of the first medium layer and used for forming a first radiation unit;

the second dielectric layer is laminated on the lower surface of the first dielectric layer;

the second radiation patch is arranged between the lower surface of the first dielectric layer and the upper surface of the second dielectric layer, and is used as a reference ground of the first radiation unit and forms a second radiation unit;

the third dielectric layer is laminated on the lower surface of the second dielectric layer;

the third radiation patch is arranged between the upper surface of the third medium layer and the lower surface of the second medium layer and is used for forming a third radiation unit;

the fourth dielectric layer is laminated on the lower surface of the third dielectric layer;

the fourth radiation patch is arranged between the lower surface of the third medium layer and the upper surface of the fourth medium layer, and is used as a reference ground of the third radiation unit and forms a fourth radiation unit;

and the fourth dielectric layer is provided with a short circuit hole array at the outer side of the fourth radiation patch, the short circuit hole array is a metalized through hole and is electrically connected with the fifth radiation patch, and the fifth radiation patch is used for grounding the short circuit hole array.

As an alternative embodiment, the array of shorting holes is disposed outside the fourth radiating patch within a range of less than one eighth of the operating wavelength.

As an alternative embodiment, the short circuit hole array comprises four groups, and each group of short circuit hole arrays is centrosymmetric at 0 °, 90 °, 180 ° and 270 °.

As an alternative embodiment, the fourth radiating patch is provided with a slot for extending the current path.

As an optional implementation manner, the miniaturized combined antenna further includes a network antenna and a bluetooth Wi-Fi antenna, and both the network antenna and the bluetooth Wi-Fi antenna are disposed on the fourth dielectric layer and located outside the short circuit hole array.

As an optional implementation manner, the network antenna includes a network main antenna and a network auxiliary antenna, the network main antenna, the network auxiliary antenna, and the bluetooth Wi-Fi antenna are centrosymmetric, and the fifth radiation patch is used as a reference ground for the network auxiliary antenna and the bluetooth Wi-Fi antenna.

As an alternative embodiment, the edge of the first radiation patch is provided with a rectangular branch.

As an optional implementation manner, the third dielectric layer includes a first layer portion and a second layer portion connected in a step shape, the size of the first layer portion is smaller than that of the second layer portion, the third radiation patch is disposed on the upper surface of the first layer portion, and the fourth radiation patch is disposed on the lower surface of the second layer portion.

As an optional implementation manner, a portion of the second layer portion larger than the first layer portion is provided with a plurality of dielectric slots, and the dielectric slots are used for avoiding the antenna feeding point.

As an optional implementation manner, the first dielectric layer, the second dielectric layer, the third dielectric layer, and the fourth dielectric layer are provided with non-metal via holes, and the non-metal via holes are used for fixing the first dielectric layer, the second dielectric layer, the third dielectric layer, and the fourth dielectric layer.

As an optional implementation manner, the miniaturized combined antenna further includes a radio Rola antenna, and mounting holes for mounting the radio Rola antenna are formed in the first dielectric layer, the second dielectric layer, the third dielectric layer and the fourth dielectric layer, where the mounting holes in the fourth dielectric layer are metallized through holes.

As an optional implementation manner, the miniaturized combined antenna further includes a reflection plate, the fifth radiation patch is disposed between the lower surface of the fourth dielectric layer and the reflection plate, and the radio Rola antenna is fixed on the reflection plate.

As an optional implementation manner, the miniaturized combined antenna further includes a shielding cover, and the shielding cover is disposed on a side of the reflection plate away from the fifth radiation patch.

In a second aspect, the present invention discloses a communication device comprising a miniaturized combined antenna according to any of the preceding claims.

Compared with the prior art, the invention has the beneficial effects that:

the embodiment of the invention provides a miniaturized combined antenna and a communication device with the same. The first radiation patch is arranged on the upper surface of the first medium layer and used for forming a first radiation unit; the second radiation patch is arranged between the first dielectric layer and the second dielectric layer and used for serving as a reference ground of the first radiation unit and forming a second radiation unit. The third radiation patch is arranged between the upper surface of the third medium layer and the lower surface of the second medium layer and used for forming a third radiation unit. The fourth radiation patch is arranged between the lower surface of the third medium layer and the upper surface of the fourth medium layer and used for serving as a reference ground of the third radiation unit and forming the fourth radiation unit. The fifth radiation patch is arranged on the lower surface of the fourth medium layer and used as a reference ground. In the embodiment of the invention, the fourth dielectric layer is provided with a short circuit hole array on the outer side of the fourth radiation patch, and the short circuit hole array is a metalized through hole and can be electrically connected with the fifth radiation patch, so that the grounding of the metalized through hole is realized. The embodiment of the invention can reduce the working frequency of the antenna, reduce the size of the antenna and is beneficial to realizing miniaturization and low cost. Meanwhile, the isolation between the antennas can be increased by the short circuit hole array, and the performance of the antennas is ensured.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a miniaturized combined antenna disclosed by an embodiment of the invention;

fig. 2 is a schematic structural diagram of a miniaturized combined antenna disclosed by an embodiment of the present invention at another viewing angle;

fig. 3 is a schematic structural diagram of a miniaturized combined antenna according to an embodiment of the present invention after hiding a first radiation patch and a first dielectric layer;

fig. 4 is a schematic structural diagram of a fourth radiation patch and a fourth dielectric layer of the miniaturized combined antenna disclosed by the embodiment of the invention;

fig. 5 is a schematic structural diagram of a fourth radiation patch and a fourth dielectric layer of the miniaturized combined antenna disclosed by the embodiment of the invention under another view angle;

fig. 6 is a schematic structural diagram of a miniaturized combined antenna disclosed by the embodiment of the invention under another view angle;

FIG. 7 is a GNSS antenna L1 gain curve of the miniaturized combined antenna disclosed in the embodiment of the present invention;

FIG. 8 is a L2 gain curve of a GNSS antenna of a miniaturized combined antenna according to an embodiment of the present invention;

FIG. 9 is a L1 axial ratio curve of a GNSS antenna of a miniaturized combined antenna disclosed in an embodiment of the present invention;

FIG. 10 is a L2 axial ratio curve of a GNSS antenna of the miniaturized combined antenna disclosed in the embodiment of the present invention;

fig. 11 is a 1.227GHz passive directional diagram of a miniaturized combined antenna disclosed by the embodiment of the invention;

FIG. 12 is a 1.575GHz passive directional diagram of a miniaturized combined antenna disclosed by the embodiment of the invention;

fig. 13 is a gain curve of the miniaturized combined antenna skyward satellite antenna disclosed in the embodiment of the present invention.

Icon: 100. a miniaturized combined antenna; 101. a first radiating patch; 1011. rectangular branch knots; 102. a first dielectric layer; 103. a second radiating patch; 104. a second dielectric layer; 105. a third radiation patch; 106. a third dielectric layer; 1061. a first layer portion; 1062. a second layer portion; 1063. a dielectric tank; 107. a fourth radiation patch; 1071. a gap; 108. a fourth dielectric layer; 1081. an array of shorting holes; 109. a network main antenna; 110. a network secondary antenna; 111. a Bluetooth Wi-Fi antenna; 112. a non-metallic via; 113. a radio station Rola antenna; 114. mounting holes; 115. a reflective plate; 116. and a shielding cover.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used in other meanings besides orientation or positional relationship, for example, the term "upper" may also be used in some cases to indicate a certain attaching or connecting relationship. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

The technical solution of the present invention will be further described with reference to the following examples and drawings.

Referring to fig. 1 and 2, a miniaturized combined antenna 100 is provided according to an embodiment of the present invention. The miniaturized combined antenna 100 can reduce the size of the antenna, and is beneficial to realizing the miniaturization and low cost of the combined antenna.

In the embodiment of the present invention, the miniaturized combined antenna 100 includes a first radiation patch 101, a first dielectric layer 102, a second radiation patch 103, a second dielectric layer 104, a third radiation patch 105, a third dielectric layer 106, a fourth radiation patch 107, a fourth dielectric layer 108, and a fifth radiation patch. Wherein: the first radiation patch 101 is arranged on the upper surface of the first dielectric layer 102 and used for forming a first radiation unit; the second dielectric layer 104 is laminated on the lower surface of the first dielectric layer 102; the second radiation patch 103 is disposed between the lower surface of the first dielectric layer 102 and the upper surface of the second dielectric layer 104, and is used as a reference ground of the first radiation unit and forms a second radiation unit; a third dielectric layer 106 is laminated on the lower surface of the second dielectric layer 104; the third radiation patch 105 is disposed between the upper surface of the third dielectric layer 106 and the lower surface of the second dielectric layer 104, and is used for forming a third radiation unit; the fourth dielectric layer 108 is laminated on the lower surface of the third dielectric layer 106; the fourth radiation patch 107 is disposed between the lower surface of the third dielectric layer 106 and the upper surface of the fourth dielectric layer 108, and is used as a reference ground of the third radiation unit and forms a fourth radiation unit; as shown in fig. 4 and 5, the fourth dielectric layer 108 is provided with a short circuit hole array 1081 on the outer side of the fourth radiation patch 107, the short circuit hole array 1081 is a metalized via and is electrically connected to the fifth radiation patch, and the fifth radiation patch is used for grounding the short circuit hole array 1081.

Optionally, the first radiation patch 101 is a circular radiation patch disposed on the upper surface of the first dielectric layer 102, the circular radiation patch may be used as a radiation unit of a large S transmission antenna of an antenna-satellite antenna, and may implement circular polarization radiation by adopting double-point feeding with equal amplitude and phase difference of 90 °, and the first radiation patch is coupled to the second radiation patch 103 on the upper surface of the second dielectric layer 104, thereby implementing a design of a dual-band antenna by one-time feeding. Of course, without being limited thereto, the first radiating patch 101 may also adopt other feeding modes, such as a four-point feeding mode; the second radiation element is not limited to the coupling with the first radiation element, and the first radiation element and the second radiation element may be independently fed. In this embodiment, the second radiation patch 103 is used to form a second radiation element, which may be a radiation element of a large S receiving antenna of an antenna when the first radiation element is designed as a radiation element of a large S transmitting antenna of a sky-through satellite antenna. That is, the coupling of the first radiation unit and the second radiation unit may be achieved by a double-point feeding point.

In this embodiment, the first radiating patch 101 is provided with a rectangular stub 1011, and the rectangular stub 1011 can extend the current path. Optionally, the number of the rectangular branches 1011 is four, and the rectangular branches are symmetric in the center. Of course, without limitation, the first radiating patch 101 may have other shapes of branches, and the number of the rectangular branches 1011 may be other.

In the embodiment of the present invention, the second radiation patch 103 is disposed between the first dielectric layer 102 and the second dielectric layer 104, a portion of the second radiation patch 103 opposite to the first radiation patch 101 may be used as a reference ground of the first radiation unit formed by the first radiation patch 101, and the rest portion is used for forming the second radiation unit. Of course, the second radiating patch 103 may also comprise two stacked patches, with the patch size below being larger than the patch size above. The patch positioned above is arranged on the lower surface of the first dielectric layer 102, is opposite to the first radiating patch 101, and is used as a reference ground of the first radiating unit; the lower patch is disposed on the upper surface of the second dielectric layer 104 for forming a second radiating element. At this time, the portion of the lower surface of the first dielectric layer 102 that is larger than the dielectric portion of the patch above can be covered as the dielectric of the first radiating element, which is beneficial to reducing the size of the second radiating element. The embodiment of the present invention does not require or limit the specific structural form of the second radiation patch 103.

Alternatively, in this embodiment, the third radiation unit may implement circular polarization radiation by adopting double-point feeding. The third radiating element may be designed as a radiating element of the GNSS antenna L1, and the third radiating patch 105 may be printed on the upper surface of the third dielectric layer 106.

Referring to fig. 3, in the present embodiment, the third dielectric layer 106 is designed to be stepped, and the smaller side is located above. Optionally, the third dielectric layer 106 includes a first layer 1061 and a second layer 1062 connected in a step shape, the size of the first layer 1061 is smaller than that of the second layer 1062, a third radiation patch 105 is disposed on an upper surface of the first layer 1061, and a fourth radiation patch 107 is disposed on a lower surface of the second layer 1062. It should be noted that the stepped design of the extended dielectric layer is beneficial to reduce the weight of the entire third dielectric layer 106, thereby facilitating the miniaturization and light-weight design of the combined antenna.

In this embodiment, the outer edges of the first layer 1061 and the second layer 1062 form a step, a plurality of dielectric slots 1063 are provided at a portion of the second layer 1062 larger than the first layer 1061, and the dielectric slots 1063 are used for avoiding antenna feeding points. Optionally, in this embodiment, the media slots 1063 are generally arc-shaped, four in number, and are generally of a centrosymmetric design. Of course, it should be understood that the dielectric slot 1063 is arranged in a manner corresponding to the arrangement of the avoided antenna feeding points, so as to perform an avoiding function.

In the embodiment of the present invention, the lower surface of the third dielectric layer 106 is provided with a fourth radiation patch 107, and the fourth radiation patch 107 can be used as a reference ground of the third radiation unit and form the fourth radiation unit. The fourth radiation unit may be designed as a GNSS antenna L2 radiation unit. In this embodiment, the dielectric portion of the lower surface of the third dielectric layer 106 that is larger than the fourth dielectric layer 108 can be used as the fourth radiation unit, which can greatly reduce the size of the fourth radiation unit, thereby facilitating the miniaturization of the combined antenna. When the third radiation unit is designed as the radiation unit of the GNSS antenna L1 and the fourth radiation unit is designed as the radiation unit of the GNSS antenna L2, the third dielectric layer 106 is designed in a step shape, which can reduce the size of the radiation unit of the GNSS antenna L2, thereby facilitating the miniaturization of the GNSS antenna.

In the embodiment of the present invention, the fourth radiation patch 107 is a circular patch, and the slot 1071 is formed on the fourth radiation patch 107, and the slot 1071 can extend a current path, which is beneficial to implementing miniaturization of the antenna. Alternatively, in the present embodiment, the slits 1071 on the fourth radiation patch 107 may be designed four, and the shape of the slits 1071 may be designed L-shaped, U-shaped, or the like. As shown in the figure, the slits 1071 are designed to be L-shaped, and the number thereof is four, and the four L-shaped slits 1071 are substantially centrosymmetric; the L-shaped slot 1071 can extend a current path, and the plurality of L-shaped slots 1071 can further extend the current path, thereby realizing miniaturization of the antenna.

In the embodiment of the present invention, the short circuit hole array 1081 is disposed outside the fourth radiation patch 107 within a range less than one eighth of the operating wavelength. The antenna is usually operated under electromagnetic waves, that is, the short circuit hole array 1081 can be designed to be within a range of less than one eighth of the wavelength of the electromagnetic waves outside the fourth radiation patch 107, and there is a gap between the short circuit hole array 1081 and the fourth radiation patch 107.

In the present embodiment, the short circuit hole arrays 1081 include four sets, each set of the short circuit hole arrays 1081 being centrosymmetric by 0 °, 90 °, 180 °, 270 °. Of course, without limitation, in other embodiments of the invention, the shorting hole array 1081 may also comprise a plurality of groups, and may also be arranged in other ways, and no specific requirements or limitations are imposed on this embodiment of the invention.

It should be noted that, in the present embodiment, the short circuit hole array 1081 is a metalized via array, and is substantially disposed outside the fourth radiation patch 107 in a ring shape. Various antennas may be designed outside the short-circuit hole array 1081, and the dielectric slot 1063 designed in the third layer may be used to avoid the feeding point of these antennas. The miniaturized combined antenna 100 may further include a network antenna and a bluetooth Wi-Fi antenna 111, where the network antenna and the bluetooth Wi-Fi antenna 111 are both disposed on the fourth dielectric layer 108 and located outside the short circuit hole array 1081. The distance between the network antenna and the GNSS antenna is larger than or equal to one-tenth wavelength. It should be understood that the plurality of dielectric slots 1063 formed at the edge of the second layer 1062 may avoid the feeding points of the network antenna, the bluetooth antenna, and the Wi-Fi antenna, thereby facilitating the production and assembly of the antenna.

Further, the network antenna comprises a network main antenna 109 and a network auxiliary antenna 110, the network main antenna 109, the network auxiliary antenna 110 and the bluetooth Wi-Fi antenna 111 are centrosymmetric, and the fifth radiation patch is used as a reference ground of the network auxiliary antenna 110 and the bluetooth Wi-Fi antenna 111.

Optionally, the network main antenna 109, the network auxiliary antenna 110, and the bluetooth Wi-Fi antenna 111 may be designed to have antenna structures with substantially similar structures, so that current distribution of the network antenna relative to the GNSS antenna is relatively uniform, isolation between the GNSS antenna and the network antenna is improved, and influence of the network antenna on the GNSS antenna is reduced. Meanwhile, mutual interference among the antennas can be reduced, and relatively good circular polarization characteristics of the CNSS antenna can be maintained.

In this embodiment, the network Antenna further includes a multi-branched PIFA Antenna and a parasitic branch (PIFA Antenna), the multi-branched PIFA Antenna extends from a side surface of the fourth dielectric layer 108 to an upper surface of the fourth dielectric layer 108, and the parasitic branch is disposed at a side edge of the fourth dielectric layer 108. Alternatively, the network antenna may be a 4G or 5G antenna.

In this embodiment, the first dielectric layer 102, the second dielectric layer 104, the third dielectric layer 106 and the fourth dielectric layer 108 are provided with non-metal via holes 112, and the non-metal via holes 112 are used for fixing the first dielectric layer 102, the second dielectric layer 104, the third dielectric layer 106 and the fourth dielectric layer 108. The specific fixing manner includes, but is not limited to, fixing each dielectric layer by passing plastic screws through the non-metal vias 112 of the first dielectric layer 102, the second dielectric layer 104, the third dielectric layer 106, and the fourth dielectric layer 108. In addition, glue can be added to further fix the first dielectric layer 102, the second dielectric layer 104, the third dielectric layer 106, and the fourth dielectric layer 108, so as to ensure the structural stability of the miniaturized combined antenna 100.

In this embodiment, the miniaturized combined antenna 100 further includes a radio Rola antenna 113, and the first dielectric layer 102, the second dielectric layer 104, the third dielectric layer 106, and the fourth dielectric layer 108 are all provided with mounting holes 114 for mounting the radio Rola antenna 113, where the mounting holes 114 on the fourth dielectric layer 108 are metalized through holes, and the metalized through holes on the fourth dielectric layer 108 may serve as a reference ground for the radio Rola antenna 113, or the radio Rola antenna 113 is electrically connected to a fifth radiation patch serving as a reference ground, and the fifth radiation patch serves as the reference ground for the radio Rola antenna 113.

Alternatively, the mounting holes 114 are generally on the order of 10mm in size. The radio Rola antenna 113 may be a bottom feed whip monopole antenna or a middle feed whip monopole antenna. In this embodiment, the operating frequency of the radio station Rola antenna 113 is 410MHz to 470MHz, a bottom feed whip monopole antenna may be used, and a middle feed whip monopole antenna may also be used.

In this embodiment, the miniaturized combined antenna 100 may further include a reflector 115, the fifth radiation patch is disposed between the lower surface of the fourth dielectric layer 108 and the reflector 115, and the radio Rola antenna 113 is fixed on the reflector 115. The fixing mode of the radio Rola antenna 113 may be that its base is welded on the reflection plate 115, and certainly, other fixing modes may also be used, and therefore, the embodiment of the present invention does not specifically require and is not limited.

In this embodiment, in order to improve the shielding performance of the active circuit, a shielding cover 116 may be designed on the back of the reflection plate 115 to reduce interference caused by other signals to the antenna. In the present embodiment, the shielding cover 116 is provided on a side of the reflection plate 115 remote from the fifth radiation patch.

In this embodiment, the first radiation unit is designed as a radiation unit of a large S transmitting antenna of an skyward satellite antenna, the second radiation unit is designed as a radiation unit of a large S receiving antenna of the skyward satellite antenna, the third radiation unit is designed as a radiation unit of a GNSS antenna L1, and the fourth radiation unit is designed as a radiation unit of a GNSS antenna L2.

At this time, the short-circuiting aperture array 1081 can reduce the operating frequency of the antenna, reduce the size of the antenna, and contribute to the miniaturization and low cost of the combined antenna. The short circuit hole array 1081 can also improve the isolation between the network antenna and the GNSS antenna, ensure the performance of the GNSS antenna circularly polarized antenna, and facilitate the normal satellite search of the GNSS antenna. In the present embodiment, the fourth radiation patch 107 for forming the L2 radiation unit of the GNSS antenna is covered by the third radiation patch 105 for forming the L1 radiation unit of the GNSS antenna, which is dielectric, so that the miniaturization effect can be further achieved. Meanwhile, for the fourth radiation patch 107 (L2 radiation unit for forming GNSS antenna) covered by the medium of large S of skyward satellite, the medium of skyward antenna may be fully covered on the third radiation patch 105 for forming L1 radiation unit of GNSS antenna, which is beneficial to reducing the size of the third radiation patch 105.

It shows the simulation results of the miniaturized combined antenna 100 provided in the present embodiment, in which the overall size of the antenna is 95mm × 20mm. Referring to fig. 7 to 13, the working frequency of the antenna is L1 (1.525 GHz-1.612 GHz), and L2 (1.164-1.278 GHz), which can support the GPS navigation system, the BDS navigation system, the Galileo navigation system, the GLONASS navigation system, and the L band. The working frequency of the radio station Rola antenna 113 is 410MHz-470MHz, the frequency band of the large S transmitting antenna of the satellite through heaven is 1980MHz-2010MHz, and the frequency band of the large S receiving antenna of the satellite through heaven is 2170MHz-2200MHz.

As can be seen from fig. 7, the passive gain of the antenna can reach 5dBi at 1.575GHz (L1 band), as can be seen from fig. 8, the passive gain of the antenna can reach 3.5dBi at 1.227GHz (L2 band), as can be seen from fig. 9, the axial ratio value of the antenna at 1.575GHz zenith (Theta =0 °) is less than 3dB, as can be seen from fig. 10, the antenna at 1.227GHz zenith (Theta =0 °) is also less than 3dB. It can be seen from fig. 11 that the front-to-back ratio of the antenna at 1.575GHz is about 18dB, and from fig. 12 that the front-to-back ratio of the antenna at 1.227GHz is about 8dB. As can be seen from FIG. 13, the gain of the space satellite antenna is greater than 4.5dBi from 1980MHz to 2010MHz, and the gain of the space satellite antenna is greater than 4dBi from 2170MHz to 2200MHz.

The embodiment of the present invention further provides a communication device including any one of the miniaturized combined antennas 100 described above. The communication device can realize antenna miniaturization.

In summary, in the miniaturized combined antenna 100 and the communication device provided by the embodiments of the present invention, the first dielectric layer 102, the second dielectric layer 104, the third dielectric layer 106, and the fourth dielectric layer 108 are stacked on the miniaturized combined antenna 100. The first radiation patch 101 is arranged on the upper surface of the first dielectric layer 102 and used for forming a first radiation unit; the second radiation patch 103 is disposed between the first dielectric layer 102 and the second dielectric layer 104 for serving as a reference ground of the first radiation element and forming a second radiation element. The third radiating patch 105 is disposed between the upper surface of the third dielectric layer 106 and the lower surface of the second dielectric layer 104 for forming a third radiating element. The fourth radiating patch 107 is disposed between the lower surface of the third dielectric layer 106 and the upper surface of the fourth dielectric layer 108 for serving as a reference ground of the third radiating element and forming a fourth radiating element. The fifth radiating patch is disposed on the lower surface of the fourth dielectric layer 108 for serving as a reference ground. In the embodiment of the present invention, the fourth dielectric layer 108 is provided with a short circuit hole array 1081 on the outer side of the fourth radiation patch 107, and the short circuit hole array 1081 is a metalized via hole and can be electrically connected to the fifth radiation patch, so as to implement grounding of the metalized via hole. The embodiment of the invention can reduce the working frequency of the antenna, reduce the size of the antenna and is beneficial to realizing miniaturization and low cost. Meanwhile, the short circuit hole array 1081 can increase the isolation between the antennas, and ensure the performance of the antennas.

The above detailed description of the miniaturized combined antenna and the communication device having the miniaturized combined antenna disclosed in the embodiments of the present invention is provided, and the principles and embodiments of the present invention are described herein by applying specific examples, and the above description of the embodiments is only used to help understanding the miniaturized combined antenna and the communication device having the miniaturized combined antenna of the present invention and the core idea thereof: meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims (14)

1. A miniaturized combined antenna (100), comprising:

a first dielectric layer (102);

the first radiation patch (101), the first radiation patch (101) is arranged on the upper surface of the first medium layer (102) and is used for forming a first radiation unit;

a second dielectric layer (104), wherein the second dielectric layer (104) is laminated on the lower surface of the first dielectric layer (102);

a second radiation patch (103), wherein the second radiation patch (103) is arranged between the lower surface of the first medium layer (102) and the upper surface of the second medium layer (104) and is used as a reference ground of the first radiation unit and forms a second radiation unit;

a third dielectric layer (106), wherein the third dielectric layer (106) is laminated on the lower surface of the second dielectric layer (104);

a third radiation patch (105), wherein the third radiation patch (105) is arranged between the upper surface of the third dielectric layer (106) and the lower surface of the second dielectric layer (104) to form a third radiation unit;

a fourth dielectric layer (108), wherein the fourth dielectric layer (108) is laminated on the lower surface of the third dielectric layer (106);

a fourth radiation patch (107), wherein the fourth radiation patch (107) is arranged between the lower surface of the third dielectric layer (106) and the upper surface of the fourth dielectric layer (108) and is used as a reference ground of the third radiation unit and forms a fourth radiation unit;

the fifth radiation patch is arranged on the lower surface of the fourth medium layer (108), the fourth medium layer (108) is provided with a short circuit hole array (1081) on the outer side of the fourth radiation patch (107), the short circuit hole array (1081) is a metalized through hole and is electrically connected with the fifth radiation patch, and the fifth radiation patch is used for enabling the short circuit hole array (1081) to be grounded.

2. The miniaturized combined antenna (100) of claim 1, wherein the array of short circuit holes (1081) is disposed outside the fourth radiating patch (107) in a range of less than one-eighth of an operating wavelength.

3. The miniaturized combined antenna (100) of claim 2, wherein the shorting aperture array (1081) comprises four sets, each set of shorting aperture arrays (1081) being centrosymmetric by 0 °, 90 °, 180 °, 270 °.

4. The miniaturized combined antenna (100) according to claim 1, wherein the fourth radiating patch (107) is provided with a slot (1071), the slot (1071) being adapted to extend a current path.

5. The miniaturized combined antenna (100) according to claim 1, wherein the miniaturized combined antenna (100) further comprises a network antenna and a bluetooth Wi-Fi antenna (111), both the network antenna and the bluetooth Wi-Fi antenna (111) being disposed on the fourth dielectric layer (108) and outside the array of short circuit holes (1081).

6. The miniaturized combined antenna (100) according to claim 5, characterized in that it comprises the network main antenna (109), the network secondary antenna (110) and the Bluetooth Wi-Fi antenna (111) with central symmetry, the fifth radiating patch being intended to act as a reference ground for the network secondary antenna (110) and the Bluetooth Wi-Fi antenna (111).

7. The miniaturized combined antenna (100) according to claim 1, wherein the edges of the first radiating patch (101) are provided with rectangular branches (1011).

8. The miniaturized combined antenna (100) according to any one of claims 1 to 7, wherein the third dielectric layer (106) comprises a first layer portion (1061) and a second layer portion (1062) connected in a stepped manner, the first layer portion (1061) has a size smaller than that of the second layer portion (1062), the third radiation patch (105) is disposed on the upper surface of the first layer portion (1061), and the fourth radiation patch (107) is disposed on the lower surface of the second layer portion (1062).

9. The miniaturized combined antenna (100) of claim 8, wherein the portion of the second layer portion (1062) larger than the first layer portion (1061) is provided with a plurality of dielectric slots (1063), the dielectric slots (1063) being configured to avoid an antenna feed point.

10. The miniaturized combination antenna (100) of any of claims 1 to 7, wherein the first dielectric layer (102), the second dielectric layer (104), the third dielectric layer (106), and the fourth dielectric layer (108) are provided with non-metallic vias (112), and the non-metallic vias (112) are used to fix the first dielectric layer (102), the second dielectric layer (104), the third dielectric layer (106), and the fourth dielectric layer (108).

11. The miniaturized combined antenna (100) according to any one of claims 1 to 7, wherein the miniaturized combined antenna (100) further comprises a radio Rola antenna (113), and the first dielectric layer (102), the second dielectric layer (104), the third dielectric layer (106) and the fourth dielectric layer (108) are all provided with mounting holes (114) for mounting the radio Rola antenna (113), wherein the mounting holes (114) on the fourth dielectric layer (108) are metalized through holes.

12. The miniaturized combined antenna (100) of claim 11, wherein the miniaturized combined antenna (100) further comprises a reflective plate (115), the fifth radiating patch is disposed between a lower surface of the fourth dielectric layer (108) and the reflective plate (115), and the radio Rola antenna (113) is fixed to the reflective plate (115).

13. The miniaturized combined antenna (100) according to claim 12, wherein the miniaturized combined antenna (100) further comprises a shielding cover (116), the shielding cover (116) being provided at a side of the reflector plate (115) facing away from the fifth radiating patch.

14. A communication device, characterized in that it comprises a miniaturized combined antenna (100) according to any of claims 1-13.

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