Intelligent set top box and antenna system

Abstract

The invention provides an intelligent set top box and an antenna system. The intelligent set top box comprises a shell; the mainboard is located in the shell; the antenna system is located in the shell and electrically connected with the mainboard; the antenna system comprises a first antenna, a second antenna and a decoupling resonance part arranged between the first antenna and the second antenna, wherein the decoupling resonance part is used for reducing mutual coupling between the first antenna and the second antenna; the first antenna is a monopole antenna; the second antenna comprises a first clearance zone; the first reference ground continuously surrounds the edge of the first clearance area, and a gap opening is formed in one side of the first clearance area, so that the first clearance area is a semi-open clearance area; one end of the feed sheet is connected with the first radio frequency input end, and the other end of the feed sheet extends into the first clearance area; and the coupling resonance branch knot is located in the first clearance area and one end is connected with the first reference ground. According to the intelligent set top box and the antenna system provided by the invention, the size of the antenna in the intelligent set top box is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of smart set-top boxes, and in particular to a smart set-top box and an antenna system. Background Art

[0002] In the field of digital TV technology, the basic functions of a set-top box include: locking and parsing digital TV signals, obtaining corresponding TV program signals, and outputting TV program signals to the TV for users to watch TV programs. However, with the vigorous development of the three-network integration technology, set-top boxes are gradually evolving towards smart set-top boxes, which enable online TV viewing and IoT control, thus placing higher requirements on the data transmission rate of set-top boxes.

[0003] At present, some smart set-top boxes use wireless local area networks (WLAN). Currently, WLAN mainly operates in two frequency bands: 2.4G (2.402GHz-2.4835GHz) and 5G (5.15GHz-5.85GHz). In order to achieve dual-band operation, a dual-band antenna for WLAN is required. However, the current dual-band antennas used in WLAN are large in size, complex in structure, and have high production costs, and are therefore not suitable for smart set-top boxes. Summary of the invention

[0004] The embodiments of the present disclosure provide a smart set-top box and an antenna system, which reduce the size of the antenna in the smart set-top box.

[0005] In a first aspect, the present disclosure provides a smart set-top box, comprising:

[0006] case;

[0007] A mainboard, located in the housing;

[0008] An antenna system, located in the housing and electrically connected to the mainboard;

[0009] The antenna system includes: a first antenna, a second antenna, and a decoupling resonant component arranged between the first antenna and the second antenna, wherein the decoupling resonant component is used to reduce mutual coupling between the first antenna and the second antenna; the first antenna is a monopole antenna;

[0010] The second antenna comprises:

[0011] First Clearance Zone;

[0012] A first reference ground continuously surrounds the edge of the first clearance area, and a gap opening is formed on one side of the first clearance area and no opening is formed on the other side, so that the first clearance area is a semi-open clearance area;

[0013] A feeding plate, one end of which is connected to the first radio frequency input terminal, and the other end of which extends into the first clearance area;

[0014] The coupled resonant branch is located in the first clearance area and one end of which is connected to the first reference ground.

[0015] In a second aspect, the present disclosure provides a smart set-top box, comprising:

[0016] case;

[0017] an antenna system, located in the housing;

[0018] The antenna system includes: a first antenna, a second antenna, and a decoupling resonant component arranged between the first antenna and the second antenna, wherein the decoupling resonant component is used to reduce mutual coupling between the first antenna and the second antenna; the first antenna is a monopole antenna;

[0019] The second antenna comprises:

[0020] The first clearance area is a rectangular clearance area;

[0021] A first reference ground continuously surrounds the edge of the clearance area, and a slit opening is formed on one side of the first clearance area and no opening is formed on the other side, so that the first clearance area does not pass through from one side of the first reference ground to the other side of the first reference ground;

[0022] A feeding sheet, comprising a connecting portion and a matching portion, wherein the connecting portion and the matching portion are respectively in the shape of long strips, the extending direction of the connecting portion is parallel to the depth direction of the clearance area, and the extending direction of the matching portion is parallel to the width direction of the clearance area; one end of the connecting portion is connected to the RF input end, and the other end of the connecting portion is connected to one side of the matching portion, and the other side of the matching portion forms a gap with the reference ground;

[0023] A coupling resonant branch is located in the clearance area and one end of which is connected to the reference ground; the coupling resonant branch is located on a side of the feeding plate close to the slot opening.

[0024] In a third aspect, the present disclosure provides an antenna system, comprising a first antenna, a second antenna, and a decoupling resonant component disposed between the first antenna and the second antenna, wherein the decoupling resonant component is used to reduce mutual coupling between the first antenna and the second antenna; the first antenna is a monopole antenna;

[0025] Wherein, the second antenna comprises:

[0026] First Clearance Zone;

[0027] A first reference ground continuously surrounds the edge of the first clearance area, and a gap opening is formed on one side of the first clearance area, so that the first clearance area is a semi-open clearance area;

[0028] A feeding plate, one end of which is connected to the first radio frequency input terminal, and the other end of which extends into the first clearance area;

[0029] The coupled resonant branch is located in the first clearance area and one end of which is connected to the first reference ground.

[0030] In the smart set-top box and antenna system provided by the present disclosure, the first reference ground is continuously around the edge of the first clearance area and a slot opening is set at the edge of one side of the first clearance area, so that the first clearance area is a semi-open wide slot, so as to shorten the length of the slot in the slot antenna and reduce the size of the second antenna; the first antenna is a monopole antenna, and a decoupling resonance component is also set between the first antenna and the second antenna to reduce the mutual coupling between the first antenna and the second antenna and shorten the distance between the first antenna and the second antenna. In this way, the antenna system provided by the present disclosure is small in size and convenient for use in a smart set-top box. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the present disclosure, the following briefly introduces the drawings required to be used in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can also be obtained based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams, and are not limitations on the actual size of the product involved in the embodiments of the present disclosure, the actual process of the method, the actual timing of the signal, etc.

[0032] Figure 1 A diagram of a usage scenario of a smart set-top box provided according to some embodiments of the present disclosure;

[0033] Figure 2 A schematic diagram of the structure of a wide slot antenna provided according to some embodiments of the present disclosure;

[0034] Figure 3 A schematic diagram of the structure of a first reference ground provided according to some embodiments of the present disclosure;

[0035] Figure 4 This is a diagram showing the effect of input matching corresponding to different lengths of coupled resonance branches provided according to some embodiments of the present disclosure;

[0036] Figure 5 A schematic diagram of the structure of a feed sheet provided according to some embodiments of the present disclosure;

[0037] Figure 6A schematic diagram of the structure of another feeding sheet provided according to some embodiments of the present disclosure;

[0038] Figure 7 A schematic diagram of the structure of another wide slot antenna provided according to some embodiments of the present disclosure;

[0039] Figure 8 A schematic diagram of the structure of yet another wide slot antenna provided according to some embodiments of the present disclosure;

[0040] Fig. 9 An S-parameter diagram of a wide slot antenna provided according to some embodiments of the present disclosure;

[0041] Fig.10 A schematic diagram of the structure of an antenna system provided according to some embodiments of the present disclosure;

[0042] Fig.11 A schematic diagram of the structure of a first antenna provided according to some embodiments of the present disclosure;

[0043] Fig.12 A partial structure diagram of a first antenna provided according to some embodiments of the present disclosure Figure 1 ;

[0044] Fig.13 A partial structure diagram of a first antenna provided according to some embodiments of the present disclosure Figure 2 ;

[0045] Fig.14 is an S parameter diagram of a first antenna provided according to some embodiments of the present disclosure;

[0046] Fig.15 A schematic diagram of the structure of a decoupling resonance component provided according to some embodiments of the present disclosure;

[0047] Fig.16 This is an effect diagram of using a decoupled resonant component according to some embodiments of the present disclosure;

[0048] Fig.17 A schematic diagram of the structure of another decoupling resonance component provided according to some embodiments of the present disclosure;

[0049] Fig.18 A schematic diagram of the structure of another antenna system provided according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0050] The following will be combined with the accompanying drawings to clearly and in detail describe the technical solutions in some embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present disclosure.

[0051] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances. It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there can be a intermediate element at the same time.

[0052] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present disclosure, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present disclosure.

[0053] Figure 1 FIG. 1 is a diagram of a usage scenario of a smart set-top box provided according to some embodiments of the present disclosure. Figure 1 As shown, the user can operate the smart set-top box 100 through the set-top box control device 101 and the display device 200 through the display device remote control device 201. The set-top box control device 101 and the display device remote control device 201 can be remote controllers, and the communication between the remote controller and the smart set-top box 100 includes infrared protocol communication or Bluetooth protocol communication, and other short-range communication methods, and the remote controller and the display device 200 communicate wirelessly or wired. Communication includes infrared protocol communication or Bluetooth protocol communication, and other short-range communication methods, and the display device 200 is controlled wirelessly or wired.

[0054] The smart set-top box 100 and the display device 200 also communicate data with the server 1000 respectively. The smart set-top box 100 and the display device 200 can be allowed to communicate and connect via a local area network (LAN), WLAN, and other networks. The server 1000 can provide various contents and interactions to the display device 200. The server 1000 can be a cluster or multiple clusters, and can include one or more types of servers.

[0055] In order to facilitate the network connection between the smart set-top box 100 and the display device 200 and the Internet connection device, a dual-band slot antenna is provided inside the smart set-top box 100 to connect to the WLAN through the dual-band slot antenna. In some embodiments, the dual-band slot antenna is provided on a motherboard inside the housing of the smart set-top box 100. Exemplarily, the dual-band slot antenna mainly operates in the 2.4G and 5G frequency bands. Of course, according to actual needs, the operating frequency band of the dual-band slot antenna is not limited to the 2.4G and 5G frequency bands.

[0056] In some embodiments, the dual-band slot antenna needs to have a slot length of 60 mm, and usually needs to be open at both ends. Thus, when the dual-band slot antenna is set on the mainboard inside the smart set-top box 100, the layout of the components on the mainboard will be seriously affected, so the dual-band slot antenna is not convenient to implement in the smart set-top box 100.

[0057] Figure 2 1 is a schematic diagram of a structure of a wide slot antenna provided according to some embodiments of the present disclosure, the wide slot antenna is used as a dual-band slot antenna in a smart set-top box 100, such as working in 2.4G and 5G frequency bands. Figure 2 As shown, the wide slot antenna 300 includes a first clearance area 310 , a first reference ground 320 , a feeding plate 330 and a coupling resonant branch 340 .

[0058] The first clearance area 310 is located at the edge of the first reference ground 320, and a slit opening 311 is set on one side of the first clearance area 310, and the slit opening 311 is located at the edge of the first reference ground 320; the other side of the first clearance area 310 extends into the first reference ground 320 and is surrounded by the first reference ground 320, so that the first clearance area 310 does not pass through from one side of the first reference ground 320 to the other side of the first reference ground 320, thereby making the first clearance area 310 a semi-open clearance area. The first clearance area 310 has a certain width and depth; wherein the depth of the first clearance area 310 is the length of the first clearance area 310 extending from the side of the first clearance area 310 away from the slit opening 311 to the inside of the first reference ground 320, and the width of the first clearance area 310 is the length of the first clearance area 310 perpendicular to the depth direction of the first clearance area 310. In some embodiments, the width of the first clearance area 310 is greater than 5 mm, the depth of the first clearance area 310 is greater than 5 mm, the width of the first clearance area 310 is less than 15 mm, and the depth of the first clearance area 310 is less than 18 mm, so that the first clearance area 310 forms a wide gap, which is greatly reduced in size compared to the dual-band slot antenna that requires a gap length of 60 mm.

[0059] In some embodiments, the first reference ground 320 is a sheet metal structure, or a copper layer on a circuit board, etc.

[0060] In some embodiments, the depth of the first clearance area 310 is similar to the width of the first clearance area 310; for example, the depth of the first clearance area 310 is equal to the width of the first clearance area 310; or, the depth of the first clearance area 310 is slightly greater than the width of the first clearance area 310, such as the depth of the first clearance area 310 is 1.1-1.7 times the width of the first clearance area 310. Exemplarily, the depth of the first clearance area 310 is 1.1-1.5 times the width of the first clearance area 310, or the depth of the first clearance area 310 is 1.2-1.3 times the width of the first clearance area 310; for example, the depth of the first clearance area 310 is 9 mm, and the width of the first clearance area 310 is 7 mm.

[0061] In the embodiment of the present disclosure, the first reference ground 320 continuously surrounds the edge of the first clearance area 310 and forms a slit opening 311 on one side of the first clearance area 310. The slit opening 311 makes the first reference ground 320 not surround the first clearance area 310 at the position of the slit opening 311, and the other areas outside the slit opening 311 surround the first clearance area 310, thereby making the first clearance area 310 a semi-open clearance area. In some embodiments, the shape of the first clearance area 310 can be a regular shape, such as a rectangle, etc. Of course, the shape of the first clearance area 310 in the embodiment of the present disclosure is not limited to a regular shape.

[0062] In some embodiments, the feed sheet 330 is located in the first clearance area 310 or the projection of the feed sheet 330 is located in the first clearance area 310. One end of the feed sheet 330 is connected to the first RF input terminal 350, and the other end of the feed sheet 330 extends to the first clearance area 310. The other end of the feed sheet 330 forms a gap with the edge of the first reference ground 320; the first RF input terminal 350 is used to transmit RF signals. The feed sheet 330 is used to realize the wide slot antenna to radiate signals of the corresponding frequency band, receive radiation signals of the corresponding frequency band, etc. In the embodiment of the present disclosure, the gap formed between the other end of the feed sheet 330 and the edge of the first reference ground 320 is a narrow gap, and the width of the gap is less than or equal to 0.5 mm, such as 0.2 mm. The narrow gap formed between the other end of the feed sheet 330 and the edge of the first reference ground 320 is equivalent to a matching capacitor, which is used to adjust the matching performance of the wide slot antenna 300.

[0063] In some embodiments, the coupling resonant branch 340 is located in the first clearance area 310, and one end of the coupling resonant branch 340 is connected to the first reference ground 320, and the other end is insulated from the first reference ground 320. Exemplarily, the coupling resonant branch 340 is located at the edge of the first clearance area 310. In some embodiments, the length of the coupling resonant branch 340 is 4-7 mm, and the width of the coupling resonant branch 340 is 0.5-3 mm. The length of the coupling resonant branch 340 determines the resonant frequency band of the wide slot antenna 300, so by adjusting the coupling resonant branch 340, the resonance of the wide slot antenna 300 can be effectively adjusted to optimize the matching. Exemplarily, when the coupling resonant branch 340 is lengthened, the resonant frequency moves to the low frequency point, and when the coupling resonant branch 340 is shortened, the resonant frequency moves to the high frequency band.

[0064] In the wide slot antenna provided by the embodiment of the present disclosure, the first reference ground 320 continuously surrounds the edge of the first clearance area 310 and a slot opening 311 is set on the edge of one side of the first clearance area 310, so that the first clearance area 310 is a semi-open wide slot, so as to shorten the length of the slot in the slot antenna, reduce the size of the antenna in the smart set-top box 100, and facilitate use in the smart set-top box 100.

[0065] Figure 3 is a schematic diagram of the structure of a first reference ground provided according to some embodiments of the present disclosure, Figure 3 A first reference ground of a sheet metal structure is shown in FIG. Figure 3 As shown, a rectangular gap is provided at the edge of the first reference ground 320, and the rectangular gap is the first clearance area 310. The edge of the rectangular gap is in an open state, that is, a slit opening 311 is provided at the edge of the first clearance area 310, and the slit opening 311 penetrates the edge of the first reference ground 320. In some embodiments, when the first reference ground 320 is a sheet metal structure, the feeding plate 330 is connected to the first RF input terminal 350 through a feeding coaxial line.

[0066] In some embodiments, the coupling resonance branch 340 is in the shape of a long strip and is disposed at the edge of the first clearance area 310. Exemplarily, the coupling resonance branch 340 is located at the slot opening 311; the length of the coupling resonance branch 340 is 5 mm, and the length of the coupling resonance branch 340 is 1 mm. Figure 4 FIG. 1 is a diagram showing the effect of input matching (S11) corresponding to different lengths of coupled resonant branches according to some embodiments. Figure 4 As shown, when the coupling resonance branch 340 is lengthened, the resonance frequency moves to a low frequency point, and when the coupling resonance branch 340 is shortened, the resonance frequency moves to a high frequency band. Figure 4 The length of the coupling resonant branch 340 is selected according to the content shown and the resonant frequency band of the wide slot antenna. Of course, in some embodiments, in order to adapt to the specific spatial shape of the first clearance area 310 and the resonant frequency band of the wide slot antenna, the coupling resonant branch 340 can be a bent structure.

[0067] Figure 5 Schematic diagram of a feeding sheet provided according to some embodiments of the present disclosure. Figure 5 As shown, the feed sheet 330 includes a connecting portion 331 and a matching portion 332. One end of the connecting portion 331 is connected to the first RF input terminal 350, and the other end of the connecting portion 331 is connected to one side of the matching portion 332. The other side of the matching portion 332 forms a gap with the edge of the first reference ground 320, so that the matching portion 332 is insulated from the first reference ground 320. Exemplarily, the connecting portion 331 and the matching portion 332 are respectively straight strip structures, such as T-shaped structures; the connecting portion 331 is a longitudinal strip structure, and the matching portion 332 is a transverse strip structure.

[0068] Figure 6 is a schematic structural diagram of another feeding sheet provided according to some embodiments of the present disclosure, Figure 6 Some other structural shapes of feed plates are shown in FIG. Figure 6 As shown, (a), (b), (c) and (d) show four shapes of feeding plates 330, Figure 6 The feed sheet 330 described in the above also includes a connecting portion 331 and a matching portion 332, and the shapes of the connecting portion 331 and the matching portion 332 can be different, and the connection shapes of the connecting portion 331 and the matching portion 332 can also be different. Of course, in the embodiment of the present disclosure, the shape of the feed sheet 330 is not limited to Figure 5 and Figure 6The feed sheet of the structural shape shown can also be other shapes or a combination of other shapes. In some embodiments, the length of the matching portion 332 is 2mm-5mm, such as the length of the matching portion 332 is 3mm; the distance between the connecting portion 331 and the edge of the slit opening 311 is greater than or equal to 2.5mm, such as the distance between the connecting portion 331 and the edge of the slit opening 311 is 3mm-4mm. Exemplarily, the distance between the connecting portion 331 and the edge of the slit opening 311 is 3.5mm.

[0069] Figure 7 is a schematic diagram of the structure of another wide slot antenna provided according to some embodiments of the present disclosure, Figure 8 FIG. 1 is a schematic diagram of the structure of another wide slot antenna provided according to some embodiments of the present disclosure. Figure 7 and Figure 8 As shown, the wide slot antenna 300 is located on a circuit board, such as a printed circuit board (PCB). In some embodiments, the circuit board is a main board of the smart set-top box 100.

[0070] like Figure 7 As shown, the first reference ground 320 is located on the first surface of the circuit board, the coupling resonance branch 340 is located on the first surface of the circuit board, the feed plate 330 is located on the second surface of the circuit board, and the projection of the feed plate 330 on the first surface of the circuit board is located in the first clearance area 310 of the first surface of the circuit board. A microstrip line 351 is provided on the second surface of the circuit board, and the feed plate 330 is connected to the first RF input terminal through the microstrip line. In some embodiments, the circuit board is a double-layer board, the first reference ground 320 is located on the bottom surface of the circuit board, and the feed plate 330 is located on the top surface of the circuit board.

[0071] like Figure 8 As shown, the first reference ground 320 is located on the first surface of the circuit board, the coupling resonance branch 340 is located on the first surface of the circuit board, the feed plate 330 is located on the first surface of the circuit board, a microstrip line 352 is arranged on the first surface of the circuit board, the microstrip line 352 is insulated from the first reference ground 320, and the feed plate 330 is connected to the first RF input terminal through the microstrip line 352. Of course, in some embodiments of the present disclosure, the first reference ground 320 and the like may also be located on the second surface of the circuit board.

[0072] Fig. 9 FIG. 4 is an S parameter diagram of a wide slot antenna provided according to some embodiments of the present disclosure. Fig. 9 As shown, the S parameters of the frequency band between point 1 and point 2 and the frequency band between point 3 and point 4 are all below -7, and even below -10 and -10. Therefore, it can be seen that the wide-slot antenna 300 provided in the present disclosure has good performance when working in the 2.4G frequency band and the 5G frequency band.

[0073] The wide slot antenna provided in the embodiment of the present disclosure is not limited to use in smart set-top boxes, but can also be used in gateway products such as home smart gateways. Based on the wide slot antenna provided in the embodiment of the present disclosure, the embodiment of the present disclosure also provides an antenna system. The antenna system provided in the embodiment of the present disclosure includes a first antenna and a second antenna; the first antenna is a monopole antenna, and the second antenna is the wide slot antenna provided in the above embodiment, and the working frequency band of the first antenna is the same as the working frequency band of the second antenna. Exemplarily, the first antenna and the second antenna both operate in the 2.4G and 5G frequency bands. The antenna system provided in the embodiment of the present disclosure can be used in smart set-top boxes, and can also be used in gateway products such as home smart gateways.

[0074] The antenna system provided in the embodiment of the present disclosure forms a multiple-input multiple-output (MIMO) antenna system through a first antenna and a second antenna, so that the antenna system has multiple channels to improve the utilization of the spectrum, thereby facilitating the improvement of the data transmission rate.

[0075] In some embodiments, the antenna system further includes a decoupling resonant component, which is located between the first antenna and the second antenna. The decoupling resonant component is used to reduce the coupling between the first antenna and the second antenna, ensure the isolation between the first antenna and the second antenna, and enable the first antenna and the second antenna to be close to each other in a certain space, so as to facilitate the control of the overall size of the antenna system and facilitate the use of the antenna system in a smart set-top box and a home smart gateway.

[0076] In some WIFI devices using MIMO antenna systems, 2*2 MIMO systems are mostly used, which require MIMO dual antennas. Moreover, the dual antennas often require a larger size, and in order to ensure isolation between antennas, there needs to be sufficient spacing between antennas, which makes the size of the MIMO antenna system larger and inconvenient to use in smart set-top boxes.

[0077] Therefore, the antenna system provided by the embodiment of the present disclosure utilizes the first reference ground to continuously surround the edge of the first clearance area and set a slot opening on the edge of one side of the first clearance area, so that the first clearance area is a semi-open wide slot, so as to shorten the length of the slot in the slot antenna and reduce the size of the second antenna; the first antenna is a monopole antenna, and a decoupling resonant component is also set between the first antenna and the second antenna to reduce the mutual coupling between the first antenna and the second antenna and shorten the distance between the first antenna and the second antenna. Therefore, the antenna system provided by the embodiment of the present disclosure can reduce the distance between the first antenna and the second antenna to less than 30mm, such as 20mm; forming a smaller antenna system, which is convenient for use in devices such as smart set-top boxes.

[0078] Fig.10 FIG. 1 is a schematic diagram of the structure of an antenna system provided according to an embodiment of the present disclosure. Fig.10 As shown, the antenna system includes a wide slot antenna (referred to as a second antenna in some places of the present disclosure) 300, a first antenna 400 and a decoupling resonant component 500. Fig.10 In the direction shown, the first antenna 400 is located on the left side of the decoupling resonant component 500, and the wide slot antenna 300 is located below the decoupling resonant component 500; of course, in some embodiments of the present disclosure, the first antenna 400 may also be located above the decoupling resonant component 500, and the wide slot antenna 300 may be located on the right side of the decoupling resonant component 500, so that the decoupling resonant component 500 is located between the wide slot antenna 300 and the first antenna 400.

[0079] In some embodiments, the first antenna 400 includes a second clearance area 410 and a second reference ground 420, and the second reference ground 420 is semi-enclosed around the side of the second clearance area 410, so that at least half of the side of the second clearance area 410 is open. Exemplarily, the second clearance area 410 is a rectangular structure, and the second clearance area 410 is located at a corner of the second reference ground 420, so that both sides of the second clearance area 410 are surrounded by the second reference ground 420.

[0080] In some embodiments, the decoupling resonant component 500 includes a third clearance area 510 and a third reference ground 520, and the third reference ground 520 does not completely surround the side of the third clearance area 510, so that one side of the third clearance area 510 is open. Exemplarily, the third clearance area 510 is located at the edge of the third reference ground 520.

[0081] In some embodiments, the first reference ground 320, the second reference ground 420 and the third reference ground 520 are connected to each other. Exemplarily, the first reference ground 320, the second reference ground 420 and the third reference ground 520 are an integral structure, such as the first reference ground 320, the second reference ground 420 and the third reference ground 520 are reference grounds located on the mainboard.

[0082] Fig.11 is a structural schematic diagram of a first antenna provided according to some embodiments of the present disclosure, Fig.12 A partial structure diagram of a first antenna provided according to some embodiments of the present disclosure Figure 1 , Fig.13 A partial structure diagram of a first antenna provided according to some embodiments of the present disclosure Figure 2 , Figure 11-13 It shows a first antenna shape. Figure 11-13As shown, the first antenna 400 also includes a first resonant component 430, a second resonant component 440 and a short-circuit component 450; the first resonant component 430, the second resonant component 440 and the short-circuit component 450 are respectively located in the second clearance area 410; one end of the first resonant component 430 is connected to the second RF input terminal 460, and one end of the second resonant component 440 is connected to the second reference ground 420; one end of the short-circuit component 450 is connected to the second reference ground 420, and the other end of the short-circuit component 450 is connected to the first resonant component 430, and the first resonant component 430 is short-circuited with the second reference ground 420 through the short-circuit component 450.

[0083] In some embodiments, the second resonant component 440 is located on one side of the first resonant component 430, and the short-circuit component 450 is located on the other side of the first resonant component 430, so as to coordinate the use of the space of the second clearance area 410. The second RF input terminal 460 is used to transmit RF signals, and the second RF input terminal 460 can be connected to the first RF input terminal 350.

[0084] In some embodiments, the operating frequency band of the first resonant component 430 is the 2.4G frequency band, and the operating frequency band of the second resonant component 440 is the 5G frequency band; of course, in the embodiments of the present disclosure, it is not limited to this, and the operating frequency band of the first resonant component 430 can also be the 5G frequency band, and the operating frequency band of the second resonant component 440 can be the 2.4G frequency band, or others.

[0085] Exemplarily, one end of the first resonant component 430 and one end of the second resonant component 440 are arranged side by side, and the distance between the first resonant component 430 and the second resonant component 440 is less than 0.5 mm, such as 0.3 mm. The distance between one end of the first resonant component 430 and one end of the second resonant component 440 is controlled within a relatively small range, so as to form an equivalent capacitance between one end of the first resonant component 430 and one end of the second resonant component 440, thereby generating capacitive coupling resonance.

[0086] In some embodiments, the first resonant component 430 includes a first resonant line 431 and a second resonant line 432. One end of the first resonant line 431 is connected to the second RF input terminal 460; the other end of the first resonant line 431 is connected to one end of the second resonant line 432 to achieve a curved arrangement of the first resonant component 430, so that the first resonant component 430 can fully utilize the space of the second clearance area 410, so that the structure of the first antenna 400 is compact and the size of the first antenna 400 is reduced. In some embodiments, a resonant line is also arranged at the other end of the second resonant line 432 to extend the length of the first resonant component 430, so that the first resonant component 430 meets the resonance requirements of its working frequency band.

[0087] In some embodiments, the first resonant component 430 further includes a first inductor 433, and the first inductor 433 is connected in series to the first resonant circuit 431, the second resonant circuit 432, or between the first resonant circuit 431 and the second resonant circuit 432. Exemplarily, the other end of the first resonant circuit 431 is connected to one end of the first inductor 433, and the other end of the first inductor 433 is connected to one end of the second resonant circuit 432, so that the first inductor 433 is arranged in series between the first resonant circuit 431 and the second resonant circuit 432. The first inductor 433 is arranged on the first resonant component 430 to shorten the overall length of the first resonant component 430, thereby facilitating the reduction of the size of the first antenna 400. Exemplarily, the inductance value of the first inductor 433 is 3nh; of course, in the embodiment of the present disclosure, the inductance value of the first inductor 433 is not limited to 3nh, and can be selected in combination with the resonant frequency band of the first resonant component 430 and the size of the second clearance area 410; for example, when the resonant frequency band of the first resonant component 430 is low and the size of the second clearance area 410 is small, the inductance value of the first inductor 433 can be increased.

[0088] In some embodiments, the short-circuit component 450 includes a first short-circuit line 451 and a second short-circuit line 452, one end of the first short-circuit line 451 is connected to the second reference ground 420, one end of the first short-circuit line 451 is connected to one end of the second short-circuit line 452, and the other end of the second short-circuit line 452 is connected to the first resonant line 431. The short-circuit component 450 is located below the second resonant line 432, so as to make full use of the space of the second clearance area 410 to control the size of the first antenna 400.

[0089] In some embodiments, the second resonant component 440 includes a third resonant line 441 and a fourth resonant line 442, one end of the third resonant line 441 is connected to the second reference ground 420, and the other end of the third resonant line 441 is connected to one end of the fourth resonant line 442, so that the second resonant component 440 is bent so that the second resonant component 440 can fully utilize the space of the second clearance area 410, so that the structure of the first antenna 400 is compact and the size of the first antenna 400 is reduced. In some embodiments, an inductor can also be set in series in the second resonant component 440.

[0090] In some embodiments, the third resonant line 441 is located on a side of the first resonant line 431 away from the short-circuit component 450 , the third resonant line 441 is parallel to the first resonant line 431 , and the distance between the third resonant line 441 and the first resonant line 431 is less than 0.5 mm, such as 0.3 mm.

[0091] Fig.14 : is an S parameter diagram of a first antenna provided according to some embodiments of the present disclosure. Fig.14As shown, the S parameters of the frequency band between point 1 and point 2 and the frequency band between point 3 and point 4 are all below -7, or even below -10. Therefore, it can be seen that the first antenna 400 provided in the present disclosure has good performance when working in the 2.4G frequency band and the 5G frequency band.

[0092] Fig.15 FIG. 1 is a schematic diagram of a structure of a decoupling resonance component provided according to some embodiments of the present disclosure. Fig.15 As shown, the decoupling resonant component 500 further includes a first branch 530 and a second branch 540, one end of the first branch 530 is connected to the third reference ground 520, and one end of the second branch 540 is connected to the first branch 530. In some embodiments, the first branch 530 includes multiple branches connected in sequence, so that the first branch 530 is bent; the second branch 540 includes multiple branches connected in sequence, so that the second branch 540 is bent. Exemplarily, the first branch 530 includes five branches connected in sequence, and the five branches are bent in sequence, so that the first branch 530 is coiled in the third clearance area 510. In some embodiments, the first branch 530 operates in the 2.4G frequency band, and the second branch 540 operates in the 5G frequency band, that is, the first branch 530 is used to offset the mutually coupled signals between the first antenna 400 and the wide slot antenna 300 in the 2.4G frequency band, and the second branch 540 is used to offset the mutually coupled signals between the first antenna 400 and the wide slot antenna 300 in the 5G frequency band, thereby reducing the coupling effect between the first antenna 400 and the wide slot antenna 300 and improving the isolation between the first antenna 400 and the wide slot antenna 300.

[0093] In some embodiments, the decoupling resonant component 500 further includes a second inductor 550 and a third inductor 560; the second inductor 550 is connected in series to the first branch 530, and the third inductor 560 is connected in series to the second branch 540. Exemplarily, one end of the second inductor 550 is connected to the third reference ground 520, and the other end of the second inductor 550 is connected to the first branch 530, so that the second inductor 550 is connected in series between the first branch 530 and the third reference ground 520; one end of the third inductor 560 is connected to the first branch 530, and the other end of the third inductor 560 is connected to the second branch 540, so that the third inductor 560 is connected in series between the second branch 540 and the first branch 530. The second inductor 550 and the third inductor 560 are arranged on the decoupling resonant component 500, so that the lengths of the first branch 530 and the second branch 540 can be effectively controlled.

[0094] Fig.16 The effect diagram of using a decoupled resonant component according to some embodiments of the present disclosure is shown in FIG. Fig.16As shown, in the 2.4G frequency band and the 5G frequency band, the S parameter curve of the antenna system in which the decoupling resonant component 500 is provided in the antenna system is located below the S parameter curve of the antenna system in which the decoupling resonant component 500 is not provided, and the data are quite different. Therefore, in the antenna system provided by the embodiment of the present disclosure, the decoupling resonant component 500 is provided between the first antenna 400 and the wide slot antenna 300, which can significantly improve the mutual coupling between the first antenna 400 and the wide slot antenna 300, and improve the isolation between the first antenna 400 and the wide slot antenna 300.

[0095] Fig.17 FIG. 1 is a schematic diagram of the structure of another decoupling resonance component provided according to some embodiments of the present disclosure. Fig.17 As shown, one end of the first branch 530 is connected to the third reference ground 520, one end of the second branch 540 is connected to the third reference ground 520, and the connection between the first branch 530 and the third reference ground 520 and the connection between the second branch 540 and the third reference ground 520 are located on different sides of the third reference ground 520 and there is a gap between them.

[0096] Fig.18 FIG. 1 is a schematic diagram of the structure of another antenna system provided according to some embodiments of the present disclosure. Fig.18 As shown, the wide slot antenna 300, the first antenna 400 and the decoupling resonant component 500 are located on the same side of the reference ground, and the first antenna 400 is located on the left side of the decoupling resonant component 500, and the wide slot antenna 300 is located on the right side of the decoupling resonant component 500; the specific forms of the wide slot antenna 300, the first antenna 400 and the decoupling resonant component 500 are adaptively changed. Of course, in some embodiments, the first antenna 400 can also be set on the right side of the decoupling resonant component 500, and the wide slot antenna 300 can be set on the left side of the decoupling resonant component 500.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A smart set-top box, characterized in that: include: case; A mainboard, located in the housing; An antenna system, located in the housing and electrically connected to the mainboard; The antenna system includes: a first antenna, a second antenna, and a decoupling resonant component arranged between the first antenna and the second antenna, wherein the decoupling resonant component is used to reduce mutual coupling between the first antenna and the second antenna; the first antenna is a monopole antenna; The second antenna comprises: First Clearance Zone; A first reference ground continuously surrounds the edge of the first clearance area, and a gap opening is formed on one side of the first clearance area and no opening is formed on the other side, so that the first clearance area is a semi-open clearance area; A feeding plate, one end of which is connected to the first radio frequency input terminal, and the other end of which extends into the first clearance area; The coupled resonant branch is located in the first clearance area and one end of which is connected to the first reference ground.

2. The smart set-top box according to claim 1, characterized in that: The feeding plate includes a connecting portion and a matching portion, one end of the connecting portion is connected to the RF input end, the other end of the connecting portion is connected to one side of the matching portion, and the other side of the matching portion forms a gap with the first reference ground.

3. The smart set-top box according to claim 1, characterized in that: The first antenna comprises: Second Clearance Zone; A second reference ground semi-enclosed around the side of the second clearance area; A first resonant component, located in the second clearance area, and having one end connected to the second RF input end; A second resonant component, located in the second clearance area, and having one end connected to the second reference ground; A short-circuit component has one end connected to the second reference ground and the other end connected to the second resonant component.

4. The smart set-top box according to claim 1, characterized in that: The decoupling resonance component comprises: A third clearance area, located between the first clearance area and the second clearance area; A third reference ground partially surrounds the side of the third clearance area; A first branch, located in the third clearance area, with one end connected to the third reference ground; The second branch is located in the third clearance area, one end of which is connected to the third reference ground or the first branch, and the other end of which is insulated from the first branch.

5. The smart set-top box according to claim 3, characterized in that: The first resonant component includes a first resonant circuit, a second resonant circuit and a first inductor; one end of the first resonant circuit is connected to the second RF input end, and the other end of the first resonant circuit is electrically connected to the second resonant circuit through the first inductor; The second resonant line is located on the side of the short-circuit component; The short-circuit component includes a first short-circuit line and a second short-circuit line, one end of the first short-circuit line is connected to the second reference ground, one end of the first short-circuit line is connected to one end of the second short-circuit line, and the other end of the second short-circuit line is connected to the first resonant line.

6. The smart set-top box according to claim 4, characterized in that: The decoupling resonant component further includes a second inductor and a third inductor; the second inductor is connected in series to one end of the first branch and a third reference ground, and the third inductor is connected in series to the second branch and the first branch.

7. The smart set-top box according to claim 5, characterized in that: The second resonance component includes a third resonance circuit and a fourth resonance circuit; One end of the third resonance line is connected to the second reference ground, and a side of the other end of the third resonance line is connected to one end of the fourth resonance line; The third resonance line is located at one side of the first resonance line and forms a gap with the first resonance line. The fourth resonance line extends in a direction away from the first resonance line.

8. The smart set-top box according to claim 3, characterized in that: The first reference ground and the second reference ground are located on the mainboard and are electrically connected to each other; and a distance between the first antenna and the second antenna is less than 30 mm.

9. A smart set-top box, characterized in that: include: case; an antenna system, located in the housing; The antenna system includes: a first antenna, a second antenna, and a decoupling resonant component arranged between the first antenna and the second antenna, wherein the decoupling resonant component is used to reduce mutual coupling between the first antenna and the second antenna; the first antenna is a monopole antenna; The second antenna comprises: The first clearance area is a rectangular clearance area; A first reference ground continuously surrounds the edge of the clearance area, and a slit opening is formed on one side of the first clearance area and no opening is formed on the other side, so that the first clearance area does not pass through from one side of the first reference ground to the other side of the first reference ground; A feeding sheet, comprising a connecting portion and a matching portion, wherein the connecting portion and the matching portion are respectively in the shape of long strips, the extending direction of the connecting portion is parallel to the depth direction of the clearance area, and the extending direction of the matching portion is parallel to the width direction of the clearance area; one end of the connecting portion is connected to the RF input end, and the other end of the connecting portion is connected to one side of the matching portion, and the other side of the matching portion forms a gap with the reference ground; A coupling resonant branch is located in the clearance area and one end of which is connected to the reference ground; the coupling resonant branch is located on a side of the feeding plate close to the slot opening.

10. An antenna system, characterized in that: include: a first antenna, a second antenna, and a decoupling resonant component disposed between the first antenna and the second antenna, wherein the decoupling resonant component is used to reduce mutual coupling between the first antenna and the second antenna; The first antenna is a monopole antenna; Wherein, the second antenna comprises: First Clearance Zone; A first reference ground continuously surrounds the edge of the first clearance area, and a gap opening is formed on one side of the first clearance area, so that the first clearance area is a semi-open clearance area; A feeding plate, one end of which is connected to the first radio frequency input terminal, and the other end of which extends into the first clearance area; The coupled resonant branch is located in the first clearance area and one end of which is connected to the first reference ground.

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