A full-band antenna and a wireless terminal device

Abstract

The utility model provides a kind of full-band antenna and wireless terminal equipment, the full-band antenna includes substrate, feed ground component, first radiating component and second radiating component, the first radiating component includes first radiating branch and second radiating branch, the first radiating branch and the second radiating branch are located in the side of the substrate;The second radiating component includes third radiating branch and the fourth radiating branch, the third radiating branch and the fourth radiating branch are located in the other side of the substrate;The first radiating branch and the third radiating branch are oppositely arranged and mutually conductive connection, the second radiating branch and the fourth radiating branch are oppositely arranged and mutually conductive connection.The full-band antenna of the utility model not only can realize the miniaturization of antenna whole, but also can effectively expand the bandwidth of antenna whole, to effectively improve the radiation gain of antenna.

Description

Technical Field

[0001] This utility model relates to the field of communication technology, and in particular to a full-band antenna and a wireless terminal device using the antenna. Background Technology

[0002] The basic function of an antenna is to convert electrical signals into electromagnetic waves and radiate them, or to convert received electromagnetic waves into electrical signals. In the field of mobile communications, omnidirectional high-gain antennas have wide applications. Existing conventional microstrip antennas or Franklin antennas suffer from poor omnidirectionality and low gain efficiency.

[0003] CPE (Content Premises Equipment) is a new type of wireless terminal access device that can receive wireless signals from wireless routers, wireless access points (APs), and wireless base stations. Like a mobile phone, it can obtain mobile network access via a SIM card, directly act as a wired network interface, or convert the signal into a WiFi signal, providing connectivity for devices in home or office settings. 5G industrial CPEs utilize public networks to provide users with long-range, high-volume wireless data transmission capabilities. This product employs a high-performance industrial-grade communication processor and industrial-grade wireless module, supported by an embedded real-time operating system. However, current wireless charging access devices have relatively large antennas, occupying a significant amount of space.

[0004] Therefore, in view of this, it is indeed necessary to propose a full-band antenna and a wireless terminal device using the full-band antenna. Utility Model Content

[0005] The purpose of this invention is to provide a full-band antenna that not only enables the overall miniaturization of the antenna but also effectively expands the overall bandwidth of the antenna, thereby effectively improving the radiation gain of the antenna.

[0006] To solve the above-mentioned technical problems, this utility model provides a full-band antenna, which includes a substrate, a grounding assembly, a first radiating assembly, and a second radiating assembly. The first radiating assembly includes a first radiating stub and a second radiating stub, which are located on one side of the substrate. The second radiating assembly includes a third radiating stub and a fourth radiating stub, which are located on the other side of the substrate. The first radiating stub and the third radiating stub are arranged opposite to each other and are electrically connected to each other, as are the second radiating stub and the fourth radiating stub.

[0007] As a further improvement of this utility model, the grounding component is configured to be coaxially fed, including a feeding point and a grounding point, to electrically connect the first radiating component and the second radiating component.

[0008] As a further improvement of this utility model, the first radiating branch includes a main radiating branch, a broken-line radiating branch, and an impedance transformer. The main radiating branch, the broken-line radiating branch, and the impedance transformer are connected in sequence, and the three are located on the same horizontal line.

[0009] As a further improvement of this utility model, the first radiating branch also includes a first low-frequency radiating branch and a second low-frequency radiating branch, the first low-frequency radiating branch being connected to the main radiating branch, and the second low-frequency radiating branch being coupled to the first low-frequency radiating branch.

[0010] As a further improvement of this utility model, the second radiating branch is electrically connected to the grounding point, the feed point is electrically connected to the impedance transformer, and the second radiating branch is located beside the impedance transformer.

[0011] As a further improvement of this utility model, both the third radiating stub and the first radiating antenna are configured as patch antennas. The first radiating stub has a plurality of first through holes, and the third radiating stub has a plurality of second through holes. Some of the second through holes correspond to the first through holes. The first radiating stub and the third radiating stub are arranged opposite to each other and are connected by the first through holes and / or the second through holes.

[0012] As a further improvement of this utility model, both the second radiating stub and the fourth radiating stub are configured as patch antennas. The second radiating stub has a plurality of third through holes, and the fourth radiating stub has a plurality of fourth through holes. Some of the fourth through holes correspond to the third through holes. The second radiating stub and the fourth radiating stub are arranged opposite to each other and are connected by the third through holes and / or the fourth through holes.

[0013] As a further improvement of this utility model, the first radiating branch is conical, the second radiating branch is L-shaped, and the width of the first radiating branch gradually decreases towards the second radiating branch.

[0014] As a further improvement of this utility model, the third radiating branch and the fourth radiating branch are coupled together, and the vertical projection of the fourth radiating branch covers the vertical projection of the second radiating branch.

[0015] The purpose of this invention is to provide a wireless terminal device that can better utilize the aforementioned full-band antenna.

[0016] To solve the above-mentioned technical problems, this utility model provides a wireless terminal device, which includes the aforementioned full-band antenna.

[0017] This invention provides a full-band antenna and a wireless terminal device. The full-band antenna includes a substrate, a grounding assembly, a first radiating assembly, and a second radiating assembly. The first radiating assembly includes a first radiating stub and a second radiating stub, located on one side of the substrate. The second radiating assembly includes a third radiating stub and a fourth radiating stub, located on the other side of the substrate. The first and third radiating stubs are arranged opposite to each other and are electrically connected, as are the second and fourth radiating stubs. This full-band antenna not only achieves overall antenna miniaturization but also effectively expands the overall antenna bandwidth, thereby effectively improving the antenna's radiation gain. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the full-band antenna of this utility model.

[0019] Figure 2 This is a schematic diagram showing the connection between the substrate and the first radiating component of the full-band antenna of this utility model.

[0020] Figure 3 This is a schematic diagram showing the connection between the substrate and the second radiating component of the full-band antenna of this utility model.

[0021] Figure 4 This is a schematic diagram showing the connection between the first radiating component and the grounding component of the full-band antenna of this utility model.

[0022] The labels in the attached figures are explained as follows:

[0023] The substrate 10 includes a grounding assembly 20, a coaxial cable 21, a power supply point 22, a grounding point 23, a first radiating assembly 30, a first radiating branch 31, a main radiating branch 310, a broken-line radiating branch 311, an impedance transformer 312, a first low-frequency radiating branch 313, a second low-frequency radiating branch 314, a second radiating branch 32, a second radiating assembly 40, a third radiating branch 41, a fourth radiating branch 42, a mid-frequency radiating branch 420, a high-frequency radiating branch 421, a first through-hole 50, a second through-hole 51, a third through-hole 52, and a fourth through-hole 53. Detailed Implementation

[0024] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed account of the full-band antenna proposed in this utility model and the wireless terminal device using this full-band antenna. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, intended only to facilitate and clarify the explanation of the embodiments of this utility model. Furthermore, the structures shown in the drawings are often part of the actual structure. In particular, different figures may emphasize different aspects and sometimes use different proportions.

[0025] This invention provides a full-band antenna that can be applied in multiple scenarios, such as wireless terminal devices. In particular, the 5G CPE is a new type of wireless terminal access device that can receive wireless signals from wireless routers, wireless access points (APs), and wireless base stations. Like a mobile phone, the CPE can obtain mobile network access by inserting a SIM card, directly acting as a wired network interface or converting it into a WiFi signal, providing device connectivity in home or office settings.

[0026] like Figure 1 As shown, specifically, the full-band antenna includes a substrate 10, a grounding assembly 20, a first radiating assembly 30, and a second radiating assembly 40. The first radiating assembly 30 includes a first radiating stub 31 and a second radiating stub 32, which are located on one side of the substrate 10. The second radiating assembly 40 includes a third radiating stub 41 and a fourth radiating stub 42, which are located on the other side of the substrate 10. The first radiating stub 31 and the third radiating stub 41 are arranged opposite to each other and are electrically connected to each other. The second radiating stub 32 and the fourth radiating stub 42 are arranged opposite to each other and are electrically connected to each other.

[0027] With this configuration, the full-band antenna of this invention not only achieves overall antenna miniaturization but also effectively expands the overall bandwidth of the antenna, thereby effectively improving the antenna's radiation gain. Furthermore, it can achieve segmented radiation, sectioned radiation, and unit-based radiation effects.

[0028] like Figure 2 and Figure 4As shown, preferably, the grounding assembly 20 is configured to be fed by a coaxial line 21, including a feed point 22 and a grounding point 23, electrically connecting the first radiating assembly 30 and the second radiating assembly 40. Further, the first radiating stub 31 includes a main radiating stub 310, a zigzag radiating stub 311, and an impedance transformer 312, which are connected sequentially and located on the same horizontal line. The impedance transformer 312 here plays a crucial role in impedance adjustment, adjusting standing wave ratios and expanding bandwidth. It achieves impedance matching, ensures maximum signal power transmission, and reduces signal reflection. The zigzag radiating stub 311 also plays an important role in broadening the bandwidth and adjusting the standing wave ratio of the overall antenna. The main radiating stub 310 adopts a microstrip structure with a length of λ / 4 (λ is the operating wavelength), and its width is determined based on the dielectric constant of the dielectric substrate 10. Its characteristic impedance is 50Ω, serving as the primary resonant unit of the radiation system. The zigzag radiating stub 311 forms an equivalent electrical length extension structure through serpentine traces, extending the radiation bandwidth to the low-frequency end by 12%-15%. The impedance transformer 312 adopts a tapered microstrip line design, performing a gradual transition according to the constant transformation law to achieve impedance matching from 50Ω to 75Ω. All three components are integrated on the FR4 substrate 10 using coplanar waveguide technology.

[0029] like Figure 2 and Figure 3 As shown, the first radiating branch 31 further includes a first low-frequency radiating branch 313 and a second low-frequency radiating branch 314. The first low-frequency radiating branch 313 is connected to the main radiating branch 310, and the second low-frequency radiating branch 314 is coupled to the first low-frequency radiating branch 313. The second radiating branch 32 is electrically connected to the grounding point 23, and the feed point 22 is electrically connected to the impedance transformer 312. The second radiating branch 32 is located beside the impedance transformer 312.

[0030] Both the third radiating stub 41 and the first radiating antenna are configured as patch antennas. The first radiating stub 31 has several first through-holes 50, and the third radiating stub 41 has several second through-holes 51. Some of the second through-holes 51 correspond to the first through-holes 50. The first radiating stub 31 and the third radiating stub 41 are arranged opposite to each other and are connected by the first through-holes 50 and / or the second through-holes 51. Specifically, the main radiating stub 310, and the first low-frequency radiating stub 313 and the second low-frequency radiating stub 314, which can control and adjust low frequencies, are connected to the third radiating stub 41 on the other side of the substrate 10, here connected by the first through-holes 50 and / or the second through-holes 51. This arrangement enables the overall low-frequency band of the antenna to be broadened. The second low-frequency radiating stub 314 can act as an independent radiator, connected to the radiating stub on the other side of the substrate 10, thereby achieving the effect of adjusting and broadening the low-frequency band.

[0031] Both the second radiating stub 32 and the fourth radiating stub 42 are configured as patch antennas. The second radiating stub 32 has several third through-holes 52, and the fourth radiating stub 42 has several fourth through-holes 53. Some of the fourth through-holes 53 correspond to the third through-holes 52. The second radiating stub 32 and the fourth radiating stub 42 are arranged opposite to each other and are connected by the third through-holes 52 and / or the fourth through-holes 53. Specifically, the third radiating stub 41 and the fourth radiating stub 42 are independent radiators, forming a microstrip line body difference with the first radiating stub 31 and the second radiating stub 32, which can effectively increase the overall bandwidth of the antenna.

[0032] Specifically, the first radiating stub 31 is conical, and the second radiating stub 32 is L-shaped, with the width of the first radiating stub 31 gradually decreasing towards the second radiating stub 32. The third radiating stub 41 and the fourth radiating stub 42 are coupled together, with the vertical projection of the fourth radiating stub 42 overlapping the vertical projection of the second radiating stub 32. This configuration achieves gradual impedance matching of the entire antenna, reducing reflection loss from the feed point 22 to the radiating end and improving energy transmission efficiency. The antenna's radiation directivity is also enhanced; the L-shaped stub can guide the radiated beam to deflect in a specific direction, improving the front and rear walls of the antenna, making it suitable for directional radiation requirements. It offers compact multi-band operation; the combination of the conical and L-shaped stubs and the coupled stubs enables 2.5 / 5GHz dual-band or multi-band coverage, suitable for scenarios such as WiFi 5G. The low profile and high gain, along with the overlapping projection design, enhance radiation efficiency within a limited space. By employing geometric gradient, coupled feeding, and spatial field modulation, impedance matching, multi-frequency resonance, and radiation directivity are comprehensively optimized, making it suitable for the requirements of modern communication systems for wide bandwidth, high gain, and miniaturization.

[0033] In addition, the fourth radiating stub 42 is equipped with an intermediate frequency (IF) radiating stub 420 and a high-frequency radiating stub 421. The vertical projection of the high-frequency radiating stub is close to the feed point 22 of the coaxial line 21; the vertical projection of the IF radiating stub is slightly further away from the feed point 22 of the coaxial line 21. The entire antenna operates in the frequency band of 690MHz-4200MHz, specifically within the range of 690-960 / 1710-2170 / 2496-2690 / 3300-4200MHz. This fulfills the design requirements of a 5G NR antenna.

[0034] In summary, this utility model provides a full-band antenna and a wireless terminal device. The full-band antenna includes a substrate 10, a grounding assembly 20, a first radiating assembly 30, and a second radiating assembly 40. The first radiating assembly 30 includes a first radiating stub 31 and a second radiating stub 32, which are located on one side of the substrate 10. The second radiating assembly 40 includes a third radiating stub 41 and a fourth radiating stub 42, which are located on the other side of the substrate 10. The first radiating stub 31 and the third radiating stub 41 are arranged opposite to each other and are electrically connected to each other. The second radiating stub 32 and the fourth radiating stub 42 are arranged opposite to each other and are electrically connected to each other.

[0035] Specifically, the first radiating stub 31 and the third radiating stub 41 are connected in opposite directions. This balances the current distribution, and the symmetrical structure with opposite orientations cancels out common-mode current, reduces the impact of imbalance in the feed network, and lowers the cross-polarization level. Furthermore, it broadens the bandwidth; the connected loop forms a circular current path, effectively increasing the electrical length of the radiator, exciting multiple resonant modes, and expanding the operating bandwidth. Finally, it effectively enhances radiation efficiency. The combination of the gradually varying impedance of the first radiating stub 31 and the complementary shape of the third radiating stub 41 optimizes surface current continuity and reduces edge scattering losses. Therefore, the third radiating stub 41 of this invention can be rectangular or a reverse rectangle opposite in direction to the first radiating stub 31, or other shapes, as long as it complements the first radiating stub 31, optimizes surface current continuity, and reduces edge scattering losses. No further limitations are imposed.

[0036] The second radiating stub 32 and the fourth radiating stub 42 are connected in opposite directions, which not only enables antenna pattern control, but specifically, the symmetrical arrangement of the second radiating stub 32 and the fourth radiating stub 42 can form a directional radiation beam. By adjusting the phase difference through the conductive connection, beamforming can be achieved, such as enhancing end-fire or wide-angle coverage. Furthermore, it can enhance low-frequency resonance. The projection of the fourth radiating stub 42 covers the second radiating stub 32, and combined with the line-of-sight parallel inductance effect of the conductive connection, it can strengthen the current in the low-frequency band and improve low-frequency radiation efficiency. Finally, it can achieve the overall structural stability of the antenna. The opposite-direction conduction forms mechanical symmetry support, reducing the impact of manufacturing tolerances on electrical performance.

[0037] This invention provides a full-band antenna that not only achieves overall antenna miniaturization but also effectively expands the overall bandwidth, thereby significantly improving the antenna's radiation gain. Furthermore, it comprehensively optimizes the antenna's overall bandwidth, gain, and radiation characteristics while maintaining compactness and multi-band compatibility. Specifically, it achieves segmented radiation by dividing the antenna into multiple parts, each operating independently, thus enabling more flexible radiation control; each segment can independently control its radiation characteristics. By adjusting the current distribution and phase of each segment, precise control of the radiation direction, gain, and beam can be achieved. It also achieves segmented radiation by dividing the antenna into multiple sections, each connected in a specific manner, to optimize the antenna's radiation performance. The core of segmented radiation lies in controlling the current distribution and phase of each section to achieve precise control of the radiated waveform. Each section can be considered a small radiating element; by adjusting the relative position, current magnitude, and phase difference of these elements, the radiation direction and intensity can be controlled. Additionally, it achieves unit-level radiation, where the antenna generates and receives electromagnetic waves through multiple independent radiating elements. The antenna radiates simultaneously in multiple directions, thereby improving its directivity and gain.

[0038] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to mutually. In addition, the different parts between embodiments can also be combined with each other, and this utility model does not limit this.

[0039] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A full-band antenna, characterized in that: The full-band antenna includes a substrate, a grounding assembly, a first radiating assembly, and a second radiating assembly. The first radiating assembly includes a first radiating stub and a second radiating stub, which are located on one side of the substrate. The second radiating assembly includes a third radiating stub and a fourth radiating stub, which are located on the other side of the substrate. The first radiating stub and the third radiating stub are arranged opposite to each other and are electrically connected to each other. The second radiating stub and the fourth radiating stub are arranged opposite to each other and are electrically connected to each other.

2. The full-band antenna according to claim 1, characterized in that: The grounding component is configured to be coaxially fed, including a feed point and a grounding point, and electrically connects the first radiating component and the second radiating component.

3. The full-band antenna according to claim 2, characterized in that: The first radiating branch includes a main radiating branch, a broken-line radiating branch, and an impedance transformer. The main radiating branch, the broken-line radiating branch, and the impedance transformer are connected in sequence and are located on the same horizontal line.

4. The full-band antenna according to claim 3, characterized in that: The first radiating branch also includes a first low-frequency radiating branch and a second low-frequency radiating branch. The first low-frequency radiating branch is connected to the main radiating branch, and the second low-frequency radiating branch is coupled to the first low-frequency radiating branch.

5. The full-band antenna according to claim 3, characterized in that: The second radiating stub is electrically connected to the grounding point, the feed point is electrically connected to the impedance transformer, and the second radiating stub is located beside the impedance transformer.

6. The full-band antenna according to claim 1, characterized in that: Both the third radiating stub and the first radiating stub are configured as patch antennas. The first radiating stub has a plurality of first through holes, and the third radiating stub has a plurality of second through holes. Some of the second through holes correspond to the first through holes. The first radiating stub and the third radiating stub are arranged opposite to each other and are connected by the first through holes and / or the second through holes.

7. The full-band antenna according to claim 1, characterized in that: Both the second radiating stub and the fourth radiating stub are configured as patch antennas. The second radiating stub has several third through holes, and the fourth radiating stub has several fourth through holes. Some of the fourth through holes correspond to the third through holes. The second radiating stub and the fourth radiating stub are arranged opposite to each other and are connected by the third through holes and / or the fourth through holes.

8. The full-band antenna according to claim 1, characterized in that: The first radiating branch is conical, and the second radiating branch is L-shaped. The width of the first radiating branch gradually decreases towards the second radiating branch.

9. The full-band antenna according to claim 1, characterized in that: The third and fourth radiating branches are coupled together, and the vertical projection of the fourth radiating branch covers the vertical projection of the second radiating branch.

10. A wireless terminal device, characterized in that: The wireless terminal device includes a full-band antenna as described in any one of claims 1-9.

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