Antenna array and intelligent set top box

Abstract

The utility model provides an intelligent set top box and an antenna array. The antenna array comprises at least one low-frequency antenna and at least one high-frequency antenna. The low-frequency antenna comprises a first radiation arm, a second radiation arm and a first balun structure. The first radiation arm comprises a first conductor section, a second conductor section and a third conductor section; a first filter circuit is arranged between the second conductor section and the first conductor section; a second filter circuit is arranged between the third conductor section and the second conductor section; and the first gap is located between the first radiation arm and the second radiation arm. The first filter circuit and the second filter circuit have band-pass characteristics for the frequency band of the low-frequency antenna, and the first filter circuit and the second filter circuit have band-stop characteristics for the frequency band of the high-frequency antenna; the low-frequency antenna can be prevented from generating resonance on the radiation wave of the high-frequency antenna, and the influence on the radiation performance of the high-frequency antenna is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of smart set-top boxes, and in particular to an antenna array and a smart set-top box. 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 network (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 2.4G antenna has a greater impact on the radiation pattern of the 5G antenna, affecting the coverage performance of the 5G antenna. Utility Model Content

[0004] The embodiments of the present disclosure provide a smart set-top box and an antenna array to improve the 5G antenna coverage performance.

[0005] In a first aspect, the present disclosure provides an antenna array, comprising:

[0006] At least one low frequency antenna, the low frequency antenna comprising:

[0007] The first radiating arm comprises:

[0008] a first conductor segment;

[0009] A second conductor segment, a first filter circuit is provided between the second conductor segment and the first conductor segment;

[0010] A third conductor segment, a second filter circuit is provided between the third conductor segment and the second conductor segment;

[0011] A second radiating arm;

[0012] A first gap is located between the first radiation arm and the second radiation arm; and

[0013] A first balun structure, a first end of which is connected to the first radiation arm, and a second end of which is connected to the second radiation arm;

[0014] at least one high frequency antenna;

[0015] The first filter circuit and the second filter circuit have bandpass characteristics for the frequency band of the low-frequency antenna, and the first filter circuit and the second filter circuit have band-stop characteristics for the frequency band of the high-frequency antenna.

[0016] In a second aspect, the present disclosure provides a smart set-top box, comprising: the antenna array described above.

[0017] In the smart set-top box and antenna array provided by the present disclosure, the antenna array includes: at least one low-frequency antenna and at least one high-frequency antenna. Among them, the low-frequency antenna includes: a first radiating arm, a second radiating arm and a first balun structure. The first radiating arm includes: a first conductor segment, a second conductor segment and a third conductor segment; a first filter circuit is provided between the second conductor segment and the first conductor segment; a second filter circuit is provided between the third conductor segment and the second conductor segment; and the first gap is located between the first radiating arm and the second radiating arm. The first filter circuit and the second filter circuit have bandpass characteristics for the frequency band of the low-frequency antenna, and the first filter circuit and the second filter circuit have band-stop characteristics for the frequency band of the high-frequency antenna; the low-frequency antenna can avoid resonance of the radiation wave of the high-frequency antenna and reduce the influence on the directional wave of the high-frequency antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 A diagram of a usage scenario of a smart set-top box provided according to some embodiments of the present disclosure;

[0020] Figure 2 A schematic diagram of a dipole antenna array provided according to an embodiment;

[0021] Figure 3 A simulation result 1 of a 2.4G antenna pattern of a 5G antenna provided in an embodiment;

[0022] Figure 4 A schematic diagram of a low-frequency antenna structure provided according to an embodiment Figure 1 ;

[0023] Figure 5 A schematic diagram of a low-frequency antenna structure provided according to an embodiment Figure 2 ;

[0024] Figure 6A transmission parameter simulation result of a first filtering circuit of a 2.4G antenna provided according to some embodiments;

[0025] Figure 7 A schematic diagram of a low-frequency antenna structure provided according to an embodiment Figure 2 ;

[0026] Figure 8 A schematic diagram showing a comparison of S-parameter simulations of three 2.4G antennas provided according to some embodiments;

[0027] Fig. 9 A second simulation result of a 2.4G antenna pattern of a 5G antenna provided according to some embodiments;

[0028] Fig.10 A schematic diagram of a monopole antenna array provided according to an embodiment;

[0029] Fig.11 It is a schematic diagram of the structure of a low-frequency monopole antenna in a monopole antenna array provided according to an embodiment. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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 dipole antenna array is provided inside the smart set-top box 100. In some embodiments, the dipole antenna array may include at least one low-frequency antenna and at least one high-frequency antenna.

[0036] In some embodiments, the low frequency antenna may be a 2.4G antenna and the high frequency antenna may be a 5G antenna. Figure 2 FIG. 1 is a schematic diagram of a dipole antenna array provided according to an embodiment. Figure 2 As shown, the dipole antenna array may include at least one low-frequency antenna 300 and at least one high-frequency antenna 400 .

[0037] In some embodiments, the low frequency antenna and the high frequency antenna are printed circuit antennas. The high frequency antenna may be located on one side of the low frequency antenna.

[0038] In some embodiments, the dipole antenna array may include a plurality of low-frequency antennas and high-frequency antennas. The low-frequency antennas and the high-frequency antennas are arranged alternately. That is, one low-frequency antenna is located between two high-frequency antennas, and one high-frequency antenna is located between two low-frequency antennas.

[0039] The spacing between adjacent antennas may be set to be about 15 to 45 mm. In some embodiments, the spacing between adjacent antennas may be about 30 mm.

[0040] In some embodiments, the spacing between adjacent antennas is less than 40 mm.

[0041] Figure 3 The first simulation result of the 2.4G antenna pattern of a 5G antenna provided in an embodiment is shown in FIG. Figure 3 As shown, the low-frequency antenna is located on the left side of the high-frequency antenna. The radiation intensity of the high-frequency antenna at the low-frequency antenna is significantly weakened, that is, the low-frequency antenna will affect the radiation of the high-frequency antenna, causing the RF signal of the high-frequency antenna to be weakened in the direction of the low-frequency antenna.

[0042] in, Figure 3 The solid line is the radiation pattern of the high frequency antenna when the frequency is 5.15 GHZ, the short dashed line is the radiation pattern of the high frequency antenna when the frequency is 5.55 GHZ; the long dashed line is the radiation pattern of the high frequency antenna when the frequency is 5.85 GHZ.

[0043] In order to improve the radio frequency signal strength of the high-frequency antenna in the direction of the low-frequency antenna, the present application provides an antenna array including a first low-frequency antenna.

[0044] Figure 4 A schematic diagram of a low-frequency antenna structure provided according to an embodiment Figure 1 .like Figure 4 As shown, the first low-frequency antenna 310 includes a first radiation arm 311 and a second radiation arm 312. A first slot 323 is provided between the first radiation arm 311 and the second radiation arm 312, and the first slot 313 is a feeding center.

[0045] The first low-frequency antenna 310 may include a first balun structure 314. A first end of the first balun structure 314 is connected to the first radiation arm 311, and a second end of the first balun structure 314 is connected to the second radiation arm 312. The first balun structure 314 may balance the currents of the first radiation arm 311 and the second radiation arm 312, and also play a role in impedance matching.

[0046] In some embodiments, the length of the first radiation arm 311 is less than half of the low-frequency waveguide wavelength, where the low-frequency waveguide wavelength refers to the waveguide wavelength of electromagnetic waves in the working frequency band of the low-frequency antenna element when transmitted in the branch transmission line.

[0047] The length of the second radiation arm 312 is less than half of the low-frequency waveguide wavelength. The low-frequency waveguide wavelength refers to the waveguide wavelength of electromagnetic waves in the working frequency band of the low-frequency antenna element when being transmitted in the branch transmission line.

[0048] An extending direction of the first radiating arm 311 is different from an extending direction of the second radiating arm 312 .

[0049] In some embodiments, the first radiation arm 311 and the second radiation arm 312 may be located on the same straight line. The central axis of the first radiation arm 311 and the central axis of the second radiation arm 312 are located on the same straight line.

[0050] The first balun structure 314 may be located on one side of a line connecting the first radiation arm 311 and the second radiation arm 312 .

[0051] Figure 5 A schematic diagram of a low-frequency antenna structure provided according to an embodiment Figure 2 .like Figure 5 As shown, the first radiating arm 311 may include at least two conductor segments. The length of each conductor segment is less than half of the wavelength of the high-frequency waveguide. In some embodiments, the length of each conductor segment is less than half to one-quarter of the wavelength of the high-frequency waveguide.

[0052] The length of each conductor segment is smaller than the wavelength of the high-frequency waveguide, so as to avoid resonance of the conductor segment with respect to the radiation of the high-frequency signal and reduce the influence on the radiation of the high-frequency signal.

[0053] In some embodiments, the high-frequency waveguide wavelength is the waveguide wavelength of the high-frequency antenna.

[0054] In some embodiments, the first radiating arm 311 may include a first conductor segment 3111 , a second conductor segment 3112 , and a third conductor segment 3113 .

[0055] The length of the first conductor segment 3111 may be the same as the length of the second conductor segment 3112 , and the length of the second conductor segment 3112 may be the same as the length of the third conductor segment 3113 . The length of the first conductor segment 3111 may be the same as the length of the third conductor segment 3113 .

[0056] In some embodiments, the length of the first conductor segment 3111 may be 6.5 mm to 7.5 mm. The length of the first conductor segment 3111 may be 7 mm.

[0057] In some embodiments, the length of the second conductor segment 3112 may be 6.5 mm to 7.5 mm. The length of the second conductor segment 3112 may be 7 mm.

[0058] In some embodiments, the length of the third conductor segment 3113 may be 6.5 mm to 7.5 mm. The length of the third conductor segment 3113 may be 7 mm.

[0059] The width of the first conductor segment 3111 may be the same as the width of the second conductor segment 3112 , and the width of the second conductor segment 3112 may be the same as the width of the third conductor segment 3113 . The width of the first conductor segment 3111 may be the same as the width of the third conductor segment 3113 .

[0060] In some embodiments, the width of the first conductor segment 3111 is not equal to the length of the first conductor segment 3111 to prevent the RF signal from resonating in the width direction. In some examples, the length of the first conductor segment 3111 can be twice or more than twice the width of the first conductor segment 3111.

[0061] The width of the second conductor segment 3112 is not equal to the length of the second conductor segment 3112. In some examples, the length of the second conductor segment 3112 can be twice or more than the width of the second conductor segment 3112.

[0062] The width of the third conductor segment 3113 is not equal to the length of the third conductor segment 3113. In some examples, the length of the third conductor segment 3113 may be twice or more than the width of the third conductor segment 3113.

[0063] In some embodiments, the width of the first conductor segment 3111 may be the same as the width of the second conductor segment 3112, and the width of the second conductor segment 3112 may be the same as the width of the third conductor segment 3113. The width of the first conductor segment 3111 may be the same as the width of the third conductor segment 3113.

[0064] In some embodiments, a first intermediate conductor 341 may be provided between the first conductor segment 3111 and the second conductor segment 3112. A first inductor 3115 is connected between the first conductor segment 3111 and the first intermediate conductor 341. A first capacitor 3116 is connected between the first conductor segment 3111 and the first intermediate conductor 341. The first conductor segment 3111, the first inductor 3115, the first intermediate conductor 341, the first capacitor 3116, and the second conductor segment 3112 are connected in series. The first inductor 3115 and the first capacitor 3116 are connected in series to form a first filtering circuit, and the first inductor 3115 and the first capacitor 3116 are connected in series to achieve a bandpass characteristic in the frequency band of the low-frequency antenna, and a bandstop characteristic in the frequency band of the high-frequency antenna.

[0065] The first inductor 3115 and the first capacitor 3116 are connected in series to achieve a band-pass characteristic in the 2.4G frequency band, and a band-stop characteristic in the 5G frequency band.

[0066] Figure 6 2.4G antenna first filter circuit transmission parameter simulation results provided according to some embodiments; Figure 6As shown, the transmission parameter of the first filter circuit in the 2.4GHz to 2.5GHz frequency band is 0, and the transmission parameter in the frequency band above 5.0GHz is below -13. It can be seen that the first filter circuit allows the waveguide in the 2.4GHz to 2.5GHz frequency band to pass through, and blocks the waveguide in the frequency band above 5.0GHz to pass through, which can prevent the low-frequency antenna from resonating with the radiation wave of the high-frequency antenna and reduce the impact on the radiation of the high-frequency antenna.

[0067] In some embodiments, the value of the first inductor 3115 may be 13-18 nH. The value of the first inductor 3115 may be 16 nH. The value of the first capacitor 3116 may be 0.20 pF-0.30 pF. The value of the first capacitor 3116 may be 0.25 pF.

[0068] The first inductor 3115 and the first capacitor 3116 are connected in series to form a first filtering circuit. The first inductor 3115 and the first capacitor 3116 are connected in series to achieve a bandpass characteristic in the frequency band of the low-frequency antenna and a band-stop characteristic in the frequency band of the high-frequency antenna.

[0069] In some embodiments, the position relationship between the first inductor 3115 and the first capacitor 3116 can be swapped. Figure 7 As shown, a first capacitor 3116 is connected between the first conductor segment 3111 and the first intermediate conductor 341. A first inductor 3115 is connected between the first conductor segment 3111 and the first intermediate conductor 341. The first conductor segment 3111, the first capacitor 3116, the first intermediate conductor 341, the first inductor 3115 and the second conductor segment 3112 are connected in series. The first inductor 3115 and the first capacitor 3116 are connected in series to form a first filtering circuit. The first inductor 3115 and the first capacitor 3116 are connected in series to achieve a bandpass characteristic in the frequency band of the low-frequency antenna, and a band-stop characteristic in the frequency band of the high-frequency antenna.

[0070] In some embodiments, a second intermediate conductor 342 may be provided between the second conductor segment 3112 and the third conductor segment 3113. A second inductor 3117 is connected between the second conductor segment 3112 and the second intermediate conductor 342. A second capacitor 3118 is connected between the third conductor segment 3113 and the second intermediate conductor 342. The second conductor segment 3112, the second inductor 3117, the second intermediate conductor 342, the second capacitor 3118 and the third conductor segment 3113 are connected in series. The second inductor 3117 and the second capacitor 3118 are connected in series to form a second filtering circuit, and the second inductor 3117 and the second capacitor 3118 are connected in series to achieve a bandpass characteristic in the frequency band of the low-frequency antenna, and a band-stop characteristic in the frequency band of the high-frequency antenna.

[0071] In some embodiments, the second radiating arm 312 may include a fourth conductor segment 3121 , a fifth conductor segment 3122 , and a sixth conductor segment 3123 .

[0072] The length of the fourth conductor segment 3121 may be the same as the length of the fifth conductor segment 3122 , and the length of the fifth conductor segment 3122 may be the same as the length of the sixth conductor segment 3123 . The length of the fifth conductor segment 3122 may be the same as the length of the sixth conductor segment 3123 .

[0073] In some embodiments, the length of the fourth conductor segment 3121 may be 6.5 mm to 7.5 mm. The length of the fourth conductor segment 3121 may be 7 mm.

[0074] In some embodiments, the length of the fifth conductor segment 3122 may be 6.5 mm to 7.5 mm. The length of the fifth conductor segment 3122 may be 7 mm.

[0075] In some embodiments, the length of the sixth conductor segment 3123 may be 6.5 mm to 7.5 mm. The length of the sixth conductor segment 3123 may be 7 mm.

[0076] In some embodiments, after adding the filter circuit, the operating frequency of the 2.4G antenna moves to the high frequency end and the bandwidth becomes narrower. To ensure the operating frequency of the low-frequency antenna, the length of the first conductor segment 3111 can be set to be greater than the length of the second conductor segment 3112. The length of the second conductor segment 3112 is equal to the length of the third conductor segment 3113.

[0077] In some embodiments, the length of the second conductor segment 3112 may be set to be greater than the length of the first conductor segment 3111. The length of the first conductor segment 3111 is equal to the length of the third conductor segment 3113.

[0078] In some embodiments, the length of the third conductor segment 3113 may be set to be greater than the length of the first conductor segment 3111. The length of the first conductor segment 3111 is equal to the length of the second conductor segment 3112.

[0079] The length setting of each conductor segment in the second radiating arm may be set relative to the feeding point setting of the first radiating arm.

[0080] Figure 8 A schematic diagram of S-parameter simulation comparison of three 2.4G antennas provided according to some embodiments. Figure 8 The three curves correspond respectively to: the short dashed line represents the S parameter simulation diagram of the 2.4G antenna without a filtering circuit, the long dashed line represents the S parameter simulation diagram of the 2.4G antenna with a filtering circuit added, and the solid line represents the S parameter simulation diagram of the 2.4G antenna with a filtering circuit added and the length of each conductor segment of the antenna adjusted.

[0081] in, Figure 8The solid line is the radiation pattern of the high frequency antenna when the frequency is 5.15 GHZ, the short dashed line is the radiation pattern of the high frequency antenna when the frequency is 5.55 GHZ; the long dashed line is the radiation pattern of the high frequency antenna when the frequency is 5.85 GHZ.

[0082] like Figure 8 As shown, the center frequency of the 2.4G antenna is shifted after the filter circuit is set. After adjusting the length of each conductor segment of the antenna, the center frequency of the 2.4G antenna can be moved back to the target position.

[0083] Fig. 9 The second simulation result of the 2.4G antenna pattern of a 5G antenna provided in some embodiments is shown in FIG. Fig. 9 The low-frequency antenna in the example is a 2.4G antenna after adding a filter circuit and adjusting the length of each conductor segment of the antenna. Figure 3 and Fig. 9 It can be seen that in the antenna array provided in the embodiment of the present application, after the low-frequency antenna is added with a filtering design, the high-frequency antenna radiation pattern is significantly improved.

[0084] In some embodiments of the present application, the radiation arm of the low-frequency antenna is configured as a plurality of conductor segments, and the length of the conductor segment is less than the wavelength of the high-frequency waveguide, which helps to reduce the influence of the low-frequency antenna on the high-frequency antenna. A filter circuit is set up between the conductor segments to prevent the low-frequency antenna from resonating with the radiation wave of the high-frequency antenna and reduce the influence on the radiation of the high-frequency antenna.

[0085] Continue to combine Figure 7 As shown, the first balun structure 314 may include: a first connecting arm 3141. One end of the first connecting arm 3141 may be connected to the first radiation arm.

[0086] In some embodiments, the width of the first connecting arm 3141 may be the same as the width of the first radiating arm 311 . For example, the width of the first connecting arm 3141 may be the same as the width of the third conductor segment 3113 .

[0087] In some embodiments, the width of the first connecting arm 3141 may be smaller than the width of the first radiating arm 311 . For example, the width of the first connecting arm 3141 may be smaller than the width of the third conductor segment 3113 .

[0088] In some embodiments, the width of the first connecting arm 3141 may be less than half of the width of the third conductor segment 3113 .

[0089] The first connecting arm 3141 may be disposed perpendicularly to the first radiating arm 311 , that is, the length direction of the first connecting arm 3141 is different from the length direction of the first radiating arm 311 .

[0090] The first balun structure 314 may include a second connecting arm 3144 . One end of the second connecting arm 3144 may be connected to the second radiation arm 312 .

[0091] In some embodiments, the width of the second connecting arm 3144 may be the same as the width of the second radiating arm 312. For example, the width of the second connecting arm 3144 may be the same as the width of the third conductor segment 3113.

[0092] In some embodiments, the width of the second connecting arm 3144 may be smaller than the width of the second radiating arm 312 . For example, the width of the second connecting arm 3144 may be smaller than the width of the sixth conductor segment 3123 .

[0093] In some embodiments, the width of the second connecting arm 3144 may be less than half of the width of the sixth conductor segment 3123 .

[0094] The second connecting arm 3144 may be disposed perpendicularly to the second radiating arm 312. That is, the length direction of the second connecting arm 3144 is different from the length direction of the second radiating arm 312. The first connecting arm is bent relative to the first radiating arm, and the second connecting arm is bent relative to the second radiating arm.

[0095] The second connecting arm 3144 is arranged in parallel with the first connecting arm 3141. The gap size between the second connecting arm 3144 and the first connecting arm 3141 is the same as the gap size between the second radiating arm 312 and the first radiating arm 311. The gap between the second radiating arm 312 and the first radiating arm 311 may be a second gap.

[0096] A bridge portion may be provided between the second connecting arm 3144 and the first connecting arm 3141. The bridge portion is used to achieve the connection between the second connecting arm 3144 and the first connecting arm 3141.

[0097] The bridge portion may include: a first bridge arm 3142, a second bridge arm 3413 and a third bridge arm 3415. A first end of the first bridge arm 3142 is connected to the first connecting arm 3141. A length direction of the first bridge arm 3142 may be arranged parallel to the first radiation arm 311.

[0098] The second bridge arm 3413 is used to connect the first bridge arm 3142 and the third bridge arm 3415. The first bridge arm 3142 and the third bridge arm 3415 are parallel to each other. The size of the gap between the first bridge arm 3142 and the third bridge arm 3415 can be the same as the size of the gap between the second radiation arm 312 and the first radiation arm 311. The gap between the first bridge arm 3142 and the third bridge arm 3415 is called a third gap.

[0099] The first gap, the second gap and the third gap are connected.

[0100] The second bridge arm 3413 may be arranged in parallel with the first connecting arm 3141. The third bridge arm 3415 and the second bridge arm 3413 may be located on the right side of the second connecting arm 3144. That is, the third bridge arm 3415 and the second bridge arm 3413 may be located on a side of the first slot adjacent to the second radiation arm.

[0101] The gap between the third bridge arm 3415 and the second radiation arm 312 is called a fourth gap. The size of the fourth gap may be larger than the size of the first gap. The size of the fourth gap may be equal to the size of the first gap. The size of the fourth gap may also be smaller than the size of the first gap.

[0102] The size of the fourth gap may be larger than the size of the third gap. The size of the fourth gap may be equal to the size of the third gap. The size of the fourth gap may also be smaller than the size of the third gap.

[0103] In some embodiments, the right end of the first balun structure is located on the left side of the right end of the second radiation arm. In some embodiments, the second bridge arm 3413 is located on the left side of the fifth conductor segment 3122 .

[0104] In some embodiments, the first radiation arm may include 4 or 5 conductor segments, or more, and the specific value may be set according to actual needs.

[0105] In the smart set-top box and antenna array provided by the present disclosure, the antenna array includes: at least one low-frequency antenna and at least one high-frequency antenna. Among them, the low-frequency antenna includes: a first radiating arm, a second radiating arm and a first balun structure. The first radiating arm includes: a first conductor segment, a second conductor segment and a third conductor segment; a first filter circuit is provided between the second conductor segment and the first conductor segment; a second filter circuit is provided between the third conductor segment and the second conductor segment; and the first gap is located between the first radiating arm and the second radiating arm. The first filter circuit and the second filter circuit have a bandpass characteristic for the frequency band of the low-frequency antenna, and the first filter circuit and the second filter circuit have a band-stop characteristic for the frequency band of the high-frequency antenna; the low-frequency antenna can avoid resonance of the radiation wave of the high-frequency antenna and reduce the influence on the radiation of the high-frequency antenna. The length of the first conductor segment is greater than the length of the second conductor segment to ensure the center frequency of the low-frequency antenna.

[0106] Fig.10 FIG. 1 is a schematic diagram of a monopole antenna array provided according to an embodiment. Fig.10 As shown, the monopole antenna array may include at least one low frequency monopole antenna 350 and at least one high frequency monopole antenna 410. The monopole antenna array may include a reference ground 500.

[0107] The low-frequency monopole antenna 350 may include a first branch 351 and a second branch 352 that are bent to each other. The first branch 351 extends in a direction away from the reference ground 500.

[0108] One end of the first branch 351 is connected to the second branch 352. The second branch 352 and the first branch 351 may be perpendicular to each other.

[0109] The high frequency monopole antenna 410 may be located in a space formed by the low frequency monopole antenna 350 and the reference ground 500. The high frequency monopole antenna 410 may be located between the second branch 352 and the reference ground 500.

[0110] Fig.11 FIG. 1 is a schematic diagram of a structure of a low-frequency monopole antenna in a monopole antenna array according to an embodiment. Fig.11 As shown, the second branch node 352 may include a first sub-conductor segment 3521 and a second sub-conductor segment 3522. The first sub-conductor segment 3521 may be located between the second sub-conductor segment 3522 and the first branch node 351.

[0111] The second branch 352 may include a third intermediate body 353 , and the third intermediate body 353 may be located between the first sub-conductor segment 3521 and the first branch 351 .

[0112] A third capacitor 3523 is provided between the third intermediate body 353 and the first branch 351, and a third inductor 3524 is provided between the third intermediate body 353 and the first sub-conductor segment 3521. The third capacitor 3523 and the third inductor 3524 are connected in series to form a third filtering circuit, which can achieve a band-pass characteristic in the frequency band of the low-frequency monopole antenna and a band-stop characteristic in the frequency band of the high-frequency monopole antenna.

[0113] In some embodiments, the value of the third inductor 3524 may be 13-18 nH. The value of the third inductor 3524 may be 16 nH. The value of the third capacitor 3523 may be 0.20 pF-0.30 pF. The value of the third capacitor 3523 may be 0.25 pF.

[0114] In some embodiments, the positional relationship between the third inductor 3524 and the third capacitor 3523 can be interchanged. The third inductor 3524 is provided between the third intermediate body 353 and the first branch 351, and the third capacitor 3523 is provided between the third intermediate body 353 and the first sub-conductor segment 3521. The third inductor 3524 and the third capacitor 3523 are connected in series to form a first filtering circuit, and the third inductor 3524 and the third capacitor 3523 are connected in series to achieve the bandpass characteristic of the frequency band of the low-frequency monopole antenna, and the bandstop characteristic of the frequency band of the high-frequency monopole antenna.

[0115] The second branch 352 may include a fourth intermediate body 354 , and the fourth intermediate body 354 may be located between the first sub-conductor segment 3521 and the second sub-conductor segment 3522 .

[0116] A fourth capacitor 3525 is provided between the fourth intermediate body 354 and the first sub-conductor segment 3521, and a fourth inductor 3526 is provided between the fourth intermediate body 354 and the second sub-conductor segment 3522. The fourth capacitor 3525 and the fourth inductor 3526 are connected in series to form a fourth filtering circuit, which can achieve a band-pass characteristic in the frequency band of the low-frequency monopole antenna and a band-stop characteristic in the frequency band of the high-frequency monopole antenna.

[0117] In some embodiments, the length of the first branch section may be 5.8-6.2 mm. For example, the length of the first branch section may be 6 mm.

[0118] In some embodiments, the length of the first sub-conductor segment 3521 may be 5.8-6.2 mm. For example, the length of the first sub-conductor segment 3521 may be 6 mm.

[0119] In some embodiments, the length of the second sub-conductor segment 3522 may be 5.8-6.2 mm. For example, the length of the second sub-conductor segment 3522 may be 6 mm.

[0120] In some embodiments, the length of the first branch 351 may be equal to the length of the first sub-conductor segment 3521 .

[0121] In some embodiments, the length of the first branch 351 may be equal to the length of the second sub-conductor segment 3522 .

[0122] In some embodiments, the length of the first sub-conductor segment 3521 may be equal to the length of the second sub-conductor segment 3522 .

[0123] In some embodiments, the length of the first branch 351 , the length of the first sub-conductor segment 3521 , and the length of the second sub-conductor segment 3522 are the same.

[0124] In some embodiments of the present application, the low-frequency monopole antenna is configured as a plurality of conductor segments, and the length of the conductor segment is less than the wavelength of the high-frequency waveguide, which helps to reduce the influence of the low-frequency monopole antenna on the high-frequency antenna. A filter circuit is set up between the conductor segments to avoid the low-frequency monopole antenna from resonating with the radiation wave of the high-frequency monopole antenna, thereby reducing the influence on the radiation of the high-frequency monopole antenna.

[0125] 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. An antenna array, characterized in that: include: At least one low frequency antenna, the low frequency antenna comprising: The first radiating arm comprises: a first conductor segment; A second conductor segment, a first filter circuit is provided between the second conductor segment and the first conductor segment; A third conductor segment, a second filter circuit is disposed between the third conductor segment and the second conductor segment; a second radiation arm; a first gap, located between the first radiation arm and the second radiation arm; and a first balun structure, a first end of which is connected to the first radiation arm, and a second end of which is connected to the second radiation arm; at least one high frequency antenna; The first filter circuit and the second filter circuit have bandpass characteristics for the frequency band of the low-frequency antenna, and the first filter circuit and the second filter circuit have band-stop characteristics for the frequency band of the high-frequency antenna.

2. The antenna array according to claim 1, characterized in that: The length of the first conductor segment is greater than the length of the second conductor segment; the length of the first conductor segment is less than one quarter of the high-frequency waveguide wavelength of the high-frequency antenna; The length of the second conductor segment is less than one quarter of the high-frequency waveguide wavelength of the high-frequency antenna; The length of the third conductor segment is less than a quarter of the high-frequency waveguide wavelength of the high-frequency antenna.

3. The antenna array according to claim 1, characterized in that: The length of the second conductor segment is equal to the length of the third conductor segment.

4. The antenna array according to claim 1, characterized in that: The first radiation arm comprises: a first intermediate body located between the first conductor segment and the second conductor segment; a second intermediate body, located between the third conductor segment and the second conductor segment; The first filtering circuit comprises: A first capacitor is disposed between the first intermediate body and the first conductor segment; A first inductor is disposed between the first intermediate body and the second conductor segment; The second filtering circuit comprises: A second capacitor is disposed between the second intermediate body and the second conductor segment; The second inductor is arranged between the second intermediate body and the third conductor segment.

5. The antenna array according to claim 1, characterized in that: The first balun structure is located on one side of a line connecting the first radiation arm and the second radiation arm.

6. The antenna array according to claim 1, characterized in that: The first balun structure comprises: A first connecting arm connected to the first radiating arm; the first connecting arm is bent relative to the first radiating arm; A second connecting arm connected to the second radiating arm; the second connecting arm is bent relative to the second radiating arm; a bridge portion, one end of which is connected to the first connecting arm, and the other end of which is connected to the second connecting arm; The first connecting arm and the second connecting arm are arranged in parallel, a second gap is provided between the first connecting arm and the second connecting arm, and the second gap is connected to the first gap.

7. The antenna array according to claim 6, characterized in that: The width of the second slit is the same as the width of the first slit.

8. The antenna array according to claim 6, characterized in that: The bridge portion comprises: A first bridge arm, connected to the first connecting arm, wherein the first bridge arm is arranged in parallel with the first radiation arm; A second bridge arm connected to the first bridge arm, the second bridge arm being parallel to the first connecting arm; A third bridge arm is connected to the second bridge arm and the second connecting arm, and the third bridge arm is connected to the first bridge arm; The right end of the second bridge arm is located on the left side of the right end of the second radiation arm.

9. The antenna array according to claim 6, characterized in that: The width of the first connecting arm is smaller than the width of the first radiating arm; The width of the second connecting arm is smaller than the width of the second radiating arm.

10. A smart set-top box, comprising: The antenna array according to any one of claims 1 to 9.

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