A multi-band composite antenna and communication equipment

Abstract

The present invention discloses a multi-band composite antenna, comprising a bottom plate, a first side plate and a second side plate along the length direction of the bottom plate, and a third side plate, a fourth side plate and a fifth side plate along the width direction of the bottom plate; the first side plate and the second side plate are respectively connected to the long side of the bottom plate, a first low-frequency antenna is provided on the first side plate, a second low-frequency antenna and a first intermediate-frequency antenna are provided on the second side plate, and the first low-frequency antenna and the second low-frequency antenna are distributed along the diagonal; the third side plate and the fourth side plate are respectively connected to the short side of the bottom plate, and a dual-frequency GPS antenna is etched on the third side plate, and a Bluetooth antenna is etched on the fourth side plate; a high-frequency array is provided on the bottom plate, the high-frequency arrays are separated by the fifth side plate, and a second intermediate-frequency antenna is etched on the fifth side plate. The present invention has the advantage of adapting to the needs of multi-band communication.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technology, and in particular to a multi-band composite antenna and communication equipment. Background Art

[0002] In today's digital age, high-speed and stable Internet connections have become an indispensable infrastructure in modern society, bringing great convenience to people's lives, work and entertainment. However, for some remote rural markets, obtaining reliable broadband connections is still a daunting challenge. To this end, fixed wireless access (FWA) technology has emerged. Its rapid deployment and wide coverage make it play an important role in meeting the growing demand for the Internet, providing residents with an online experience comparable to that in urban areas, thereby promoting the process of digital inclusion and narrowing the urban-rural digital divide. Moreover, with the explosive growth of 5G networks abroad, FWA has not only made significant progress in technology, but has also quickly emerged in business, becoming one of the mainstream broadband services in foreign markets.

[0003] However, despite the outstanding performance of FWA in building Internet bridges, the antenna products of fixed wireless access systems have a single frequency band and cannot keep up with the rapid development of chip technology and market demand, which affects the performance and competitiveness of FWA.

[0004] Furthermore, current antenna products are unable to adapt to the communication requirements of higher frequency bands and larger bandwidths, making it difficult for them to comply with new-generation wireless communication standards such as 5G, which is not conducive to ensuring the sustainable development of FWA systems and the continuous improvement of user experience. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a multi-band composite antenna that can meet the needs of multi-band communications.

[0006] In order to solve the above technical problems, the present invention provides a multi-band composite antenna, comprising a bottom plate, a first side plate and a second side plate along the length direction of the bottom plate, and a third side plate, a fourth side plate and a fifth side plate along the width direction of the bottom plate;

[0007] The first side plate and the second side plate are respectively connected to the long sides of the bottom plate, the first side plate is provided with a first low-frequency antenna, the second side plate is provided with a second low-frequency antenna and a first intermediate-frequency antenna, and the first low-frequency antenna and the second low-frequency antenna are distributed along a diagonal line;

[0008] The third side plate and the fourth side plate are respectively connected to the short sides of the bottom plate, and a dual-frequency GPS antenna is etched on the third side plate, and a Bluetooth antenna is etched on the fourth side plate;

[0009] A high frequency array is disposed on the bottom plate, the high frequency arrays are separated by the fifth side plate, and a second intermediate frequency antenna is etched on the fifth side plate.

[0010] Preferably, the high-frequency array includes at least four high-frequency antennas, and the high-frequency antennas are provided with symmetrical dipoles with 45° cross-polarization and a first parasitic patch located above the symmetrical dipoles.

[0011] Preferably, the symmetrical oscillator is provided with first radiating arms arranged along the circumferential direction, and the first radiating arms are in a paper clip structure.

[0012] Preferably, the first low-frequency antenna is located at the corner of the first side panel close to the third side panel, the second low-frequency antenna is located at the corner of the second side panel close to the fourth side panel, and the first intermediate-frequency antenna is located at the corner of the second side panel close to the third side panel.

[0013] Preferably, the first low-frequency antenna and the second low-frequency antenna are respectively provided with a second radiation arm of a bent structure, and a second parasitic patch located above the second radiation arm;

[0014] The first low-frequency antenna and the second low-frequency antenna are both made of FR4 dielectric substrate.

[0015] Preferably, the dual-frequency GPS antenna, the Bluetooth antenna, the first intermediate frequency antenna and the second intermediate frequency antenna are all slot structures.

[0016] Preferably, the bottom panel and the first side panel, the second side panel, the third side panel and the fourth side panel are an integral structure, and the first side panel and the third side panel are connected by a connecting member, and the second side panel and the fourth side panel are connected by another connecting member.

[0017] Preferably, the bottom of the bottom plate is provided with a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, an eighth port and a ninth port, the dual-frequency GPS antenna is connected to the first port, the first low-frequency antenna is connected to the second port, one of the high-frequency arrays is connected to the third port and the fifth port, the other high-frequency array is connected to the sixth port and the eighth port, the second low-frequency antenna is connected to the seventh port, the first intermediate frequency antenna is connected to the fourth port, and the second intermediate frequency antenna is connected to the ninth port;

[0018] The second port and the seventh port are both vertically polarized ports and are respectively close to the first low-frequency antenna and the second low-frequency antenna.

[0019] Correspondingly, the present invention provides a communication device, comprising the above-mentioned multi-band composite antenna.

[0020] The implementation of the present invention has the following beneficial effects:

[0021] The present invention connects the first side plate and the second side plate to the long side of the bottom plate respectively, and the third side plate and the fourth side plate to the short side of the bottom plate respectively, so as to increase the gain of the high-frequency antenna array and improve the isolation of the antenna by using each side plate as a side reflection plate;

[0022] The first side panel is provided with a first low-frequency antenna, the second side panel is provided with a second low-frequency antenna and a first intermediate-frequency antenna, the first low-frequency antenna and the second low-frequency antenna are distributed along a diagonal line, saving antenna space, and achieving a high isolation and high gain performance of 15dB between multiple ports by optimizing the distribution of antennas;

[0023] Furthermore, a dual-frequency GPS antenna is etched on the third side panel, and a Bluetooth antenna is etched on the fourth side panel; a high-frequency array is provided on the bottom panel, and the high-frequency arrays are separated by the fifth side panel to improve the isolation between the high-frequency arrays; and a second intermediate frequency antenna is etched on the fifth side panel, so that this product can operate in multiple frequency bands and adapt to multi-band communication needs, thereby ensuring the sustainable development of the FWA system and the continuous improvement of user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of a multi-band composite antenna of the present invention;

[0025] Figure 2 It is a structural diagram of the multi-band composite antenna of the present invention from another angle;

[0026] Figure 3 It is a back structure diagram of the multi-band composite antenna of the present invention;

[0027] Figure 4 It is a parameter index diagram of the multi-band composite antenna of the present invention;

[0028] Figure 5 is a VSWR and isolation parameter diagram of the third port and the fifth port of the present invention;

[0029] Figure 6 is a VSWR and isolation parameter diagram of the sixth port and the eighth port of the present invention;

[0030] Figure 7 is a beam performance parameter diagram of the first low-frequency antenna and the second low-frequency antenna of the present invention;

[0031] Figure 8 is a beam performance parameter diagram of the first intermediate frequency antenna and the second intermediate frequency antenna of the present invention;

[0032] Fig. 9 is a beam performance parameter diagram of the high frequency antenna of the present invention;

[0033] Fig.10 It is a beam performance parameter diagram of the dual-frequency GPS antenna of the present invention. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that the directional terms such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific limitations of the present invention.

[0035] Combination Figures 1 to 10 According to an embodiment of the present invention, a multi-band composite antenna is provided, comprising a bottom plate 1, a first side plate 11 and a second side plate 12 along the length direction of the bottom plate 1, and a third side plate 13, a fourth side plate 14 and a fifth side plate 15 along the width direction of the bottom plate 1;

[0036] The present invention connects the first side plate 11 and the second side plate 12 to the long side of the bottom plate 1 respectively, and connects the third side plate 13 and the fourth side plate 14 to the short side of the bottom plate 1 respectively, so that the gain of the high-frequency antenna 41 array is increased and the isolation of the antenna is improved by using each side plate as a side reflector;

[0037] The first side panel 11 is provided with a first low-frequency antenna 21, the second side panel 12 is provided with a second low-frequency antenna 22 and a first intermediate-frequency antenna 31, the first low-frequency antenna 21 and the second low-frequency antenna 22 are distributed along the diagonal line, saving antenna space, and achieving a high isolation and high gain performance of 15dB between multiple ports by optimizing the distribution of the antennas;

[0038] Furthermore, a dual-frequency GPS antenna 5 is etched on the third side panel 13, and a Bluetooth antenna 6 is etched on the fourth side panel 14; a high-frequency array 4 is provided on the bottom panel 1, and the high-frequency arrays 4 are separated by the fifth side panel 15 to improve the isolation between the high-frequency arrays 4; and a second intermediate frequency antenna 32 is etched on the fifth side panel 15, so that the product can work in multiple frequency bands and adapt to multi-band communication needs, thereby ensuring the sustainable development of the FWA system and the continuous improvement of user experience.

[0039] It should be noted that, as one of the embodiments, the overall size of this product is 395*215*42mm, the curb weight is less than 1.2kg, the port isolation is greater than 15dB, the standing wave ratio is less than 2.5, and it has high gain performance.

[0040] Preferably, in order to improve the high-frequency gain, the high-frequency array 4 includes at least four high-frequency antennas 41, and the high-frequency antenna 41 is provided with a symmetrical oscillator 411 with 45° cross-polarization and a first parasitic patch 412 located above the symmetrical oscillator 411, so as to increase the channel capacity through the symmetrical oscillator 411, and through the first parasitic patch 412, effectively increase the high-frequency bandwidth and improve the high-frequency gain, which is beneficial to the conformal shape of the radiation pattern.

[0041] It should be noted that, as one of the embodiments, the high frequency array 4 can be divided into two groups of sub-arrays, each sub-array has four high frequency antennas 41, and a total of four docking ports are set to effectively improve the overall efficiency of the antenna. In addition, the high frequency array 4 cooperates with each side panel to further improve the antenna radiation gain and improve the antenna isolation index.

[0042] More preferably, the symmetrical oscillator 411 is provided with first radiation arms 413 arranged along the circumferential direction, and the first radiation arms 413 are in a paper clip structure, which effectively broadens the radiation frequency band.

[0043] On the other hand, combined again Figures 1 to 10 The first low-frequency antenna 21 is located at the corner of the first side panel 11 close to the third side panel 13, and the second low-frequency antenna 22 is located at the corner of the second side panel 12 close to the fourth side panel 14, which saves antenna space and further improves the signal isolation index. Among them, the first intermediate frequency antenna 31 is located at the corner of the second side panel 12 close to the third side panel 13.

[0044] Preferably, the first low-frequency antenna 21 and the second low-frequency antenna 22 are respectively provided with a second radiating arm 23 of a bent structure and a second parasitic patch 24 located above the second radiating arm 23, so as to further save antenna space, broaden the low-frequency bandwidth, and improve the low-frequency band gain. The second parasitic patch 24 can adopt a rectangular structure to further broaden the low-frequency bandwidth and improve the low-frequency band gain.

[0045] It should be noted that the first low-frequency antenna 21 and the second low-frequency antenna 22 are both made of a 0.8 mm thick FR4 dielectric substrate with a dielectric constant of 4.4, which reduces the weight of the antenna.

[0046] Preferably, the dual-frequency GPS antenna 5, the Bluetooth antenna 6, the first intermediate frequency antenna 31 and the second intermediate frequency antenna 32 are all slot structures, which saves antenna space and reduces antenna weight.

[0047] The frequency of the dual-frequency GPS antenna 5 covers 1176.45 MHz in the L1 band and 1575.42 MHz in the L5 band, which greatly improves the accuracy of positioning and the accuracy of background maintenance. The dual-frequency GPS antenna 5 is arranged on the third side panel 13, which saves space.

[0048] More preferably, the bottom panel 1 and the first side panel 11, the second side panel 12, the third side panel 13 and the fourth side panel 14 are an integral structure, and the first side panel 11 and the third side panel 13 are connected by a connecting member 7, and the second side panel 12 and the fourth side panel 14 are connected by another connecting member 7, thereby reducing the product space size, saving material costs and improving production efficiency.

[0049] In addition, the bottom of the bottom plate 1 is provided with a first port 81, a second port 82, a third port 83, a fourth port 84, a fifth port 85, a sixth port 86, a seventh port 87, an eighth port 88 and a ninth port, the dual-frequency GPS antenna 5 is connected to the first port 81, the first low-frequency antenna 21 is connected to the second port 82, one of the high-frequency arrays 4 is connected to the third port 83 and the fifth port 85, the other high-frequency array 4 is connected to the sixth port 86 and the eighth port 88, the second low-frequency antenna 22 is connected to the seventh port 87, the first intermediate frequency antenna 31 is connected to the fourth port 84, and the second intermediate frequency antenna 32 is connected to the ninth port;

[0050] The second port 82 and the seventh port 87 are both vertically polarized ports, and are respectively close to the first low-frequency antenna 21 and the second low-frequency antenna 22, so as to further improve the signal isolation index. Preferably, the input impedance of each port is a 50 ohm MHF-1 / u.fl type connector.

[0051] It should be noted that this product can operate in multiple frequency bands, including the low band 617-960MHz, the mid-band 1472-1496MHz, and the high band 1710-2170 / 2300-2700 / 3300-4200MHz, as well as a GPS antenna with L1 and L5 dual-bands.

[0052] Since the communication device of the embodiment of the present disclosure includes a multi-band composite antenna as in any one of the above-mentioned embodiments, the communication device of the embodiment of the present disclosure has the technical effects brought by the multi-band composite antenna as in any one of the above-mentioned embodiments. Therefore, the specific technical effects of the communication device of the embodiment of the present disclosure can refer to the technical effects of the multi-band composite antenna of any one of the above-mentioned embodiments, which will not be repeated here.

[0053] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A multi-band composite antenna, characterized in that: The bottom plate comprises a first side plate and a second side plate arranged along the length direction of the bottom plate, and a third side plate, a fourth side plate and a fifth side plate arranged along the width direction of the bottom plate; The first side plate is connected to one long side of the bottom plate, the second side plate is connected to the other long side of the bottom plate, a first low-frequency antenna is provided on the first side plate, a second low-frequency antenna and a first intermediate-frequency antenna are provided on the second side plate, and the first low-frequency antenna and the second low-frequency antenna are distributed diagonally along the bottom plate; The third side plate is connected to a short side of the bottom plate, the fourth side plate is connected to another short side of the bottom plate, and a dual-frequency GPS antenna is etched on the third side plate, and a Bluetooth antenna is etched on the fourth side plate; A high frequency array is disposed on the bottom plate, the high frequency arrays are separated by the fifth side plate, and a second intermediate frequency antenna is etched on the fifth side plate.

2. The multi-band composite antenna according to claim 1, characterized in that: The high-frequency array includes at least four high-frequency antennas, and the high-frequency antennas are provided with symmetrical dipoles with 45° cross-polarization and a first parasitic patch located above the symmetrical dipoles.

3. The multi-band composite antenna according to claim 2, characterized in that: The symmetrical vibrator is provided with first radiation arms arranged along the circumferential direction, and the first radiation arms are in a paper clip structure.

4. The multi-band composite antenna according to claim 1, characterized in that: The first low-frequency antenna is located at a corner of the first side panel close to the third side panel, the second low-frequency antenna is located at a corner of the second side panel close to the fourth side panel, and the first intermediate-frequency antenna is located at a corner of the second side panel close to the third side panel.

5. The multi-band composite antenna according to claim 1, characterized in that: The first low-frequency antenna and the second low-frequency antenna are respectively provided with a second radiation arm of a bent structure and a second parasitic patch located above the second radiation arm; The first low-frequency antenna and the second low-frequency antenna are both made of FR4 dielectric substrate.

6. The multi-band composite antenna according to claim 1, characterized in that: The dual-frequency GPS antenna, the Bluetooth antenna, the first intermediate frequency antenna and the second intermediate frequency antenna are all slot structures.

7. The multi-band composite antenna according to claim 1, characterized in that: The bottom plate is an integral structure with the first side plate, the second side plate, the third side plate and the fourth side plate, and the first side plate is connected to the third side plate via a connecting member, and the second side plate is connected to the fourth side plate via another connecting member.

8. The multi-band composite antenna according to claim 1, wherein: The bottom of the bottom plate is provided with a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, an eighth port and a ninth port, the dual-frequency GPS antenna is connected to the first port, the first low-frequency antenna is connected to the second port, one of the high-frequency arrays is connected to the third port and the fifth port, the other high-frequency array is connected to the sixth port and the eighth port, the second low-frequency antenna is connected to the seventh port, the first intermediate frequency antenna is connected to the fourth port, and the second intermediate frequency antenna is connected to the ninth port; The second port and the seventh port are both vertically polarized ports and are respectively close to the first low-frequency antenna and the second low-frequency antenna.

9. A communication device, characterized in that: It comprises the multi-band composite antenna as described in any one of claims 1-8.

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