Full-band antenna and wireless terminal equipment

Abstract

The invention provides a full-band antenna and wireless terminal equipment, the full-band antenna comprises a substrate, a ground feed assembly, a first radiation assembly and a second radiation assembly, the first radiation assembly comprises a first radiation branch knot and a second radiation branch knot, and the first radiation branch knot and the second radiation branch knot are located on one side surface of the substrate; the second radiation assembly comprises a third radiation branch knot and a fourth radiation branch knot, and the third radiation branch knot and the fourth radiation branch knot are located on the other side face of the substrate; the first radiation branch knot and the third radiation branch knot are arranged in a back-to-back manner and are connected with each other in a conduction manner. The second radiation branch knot and the fourth radiation branch knot are arranged in a back-to-back manner and are connected with each other in a conduction manner. According to the full-band antenna, miniaturization of the whole antenna can be achieved, the whole bandwidth of the antenna can be effectively expanded, and therefore the radiation gain of the antenna is effectively improved.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a full-band antenna and a wireless terminal device using the antenna. Background Art

[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. Omnidirectional, high-gain antennas are widely used in mobile communications. Existing conventional microstrip antennas or Franklin antennas have poor omnidirectionality and low gain efficiency.

[0003] CPE is a new type of wireless terminal access device that receives wireless signals from wireless routers, wireless access points, and wireless base stations. Like a mobile phone, it can access the mobile network through a card, acting directly as a wired network interface or converting it into a WiFi signal, providing device connectivity within homes and offices. 5G industrial CPE leverages public networks to provide users with wireless long-distance, large-scale data transmission. This product utilizes a high-performance industrial-grade communication processor and industrial-grade wireless modules, supported by an embedded real-time operating system. However, the antennas of current wireless charging access devices are large and occupy a large area and space.

[0004] Therefore, in view of this, it is necessary for the present invention to provide a full-band antenna and a wireless terminal device using the full-band antenna. Summary of the Invention

[0005] The purpose of the present invention is to provide a full-band antenna that can not only achieve miniaturization of the entire antenna, but also effectively expand the bandwidth of the entire antenna, thereby effectively improving the radiation gain of the antenna.

[0006] In order to solve the above technical problems, the present invention provides a full-band antenna, which includes a substrate, a ground feed component, a first radiating component and a second radiating component. The first radiating component includes a first radiating branch and a second radiating branch, and the first radiating branch and the second radiating branch are located on one side of the substrate; the second radiating component includes a third radiating branch and the fourth radiating branch, and the third radiating branch and the fourth radiating branch are located on the other side of the substrate; the first radiating branch and the third radiating branch are arranged back to back and are conductively connected to each other, and the second radiating branch and the fourth radiating branch are arranged back to back and are conductively connected to each other.

[0007] As a further improvement of the present invention, the ground feeding component is configured as a coaxial line feed, 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 the present invention, the first radiation branch includes a main radiation branch, a broken line radiation branch and an impedance converter. The main radiation branch, the broken line radiation branch and the impedance converter are connected in sequence and are located on the same horizontal line.

[0009] As a further improvement of the present invention, the first radiation branch also includes a first low-frequency radiation branch and a second low-frequency radiation branch, the first low-frequency radiation branch is connected to the main radiation branch, and the second low-frequency radiation branch is coupled to the first low-frequency radiation branch.

[0010] As a further improvement of the present invention, the second radiation branch is electrically connected to the grounding point, the feeding point is electrically connected to the impedance converter, and the second radiation branch is located beside the impedance converter.

[0011] As a further improvement of the present invention, the third radiating branch and the first radiating antenna are both configured as sheet-shaped patch antennas, the first radiating branch is provided with a plurality of first conductive holes, the third radiating branch is provided with a plurality of second conductive holes, some of the second conductive holes correspond to the first conductive holes, the first radiating branch and the third radiating branch are arranged back to back and are conductively connected through the first conductive holes and / or the second conductive holes.

[0012] As a further improvement of the present invention, the second radiating branch node and the fourth radiating branch node are both configured as sheet-shaped patch antennas, the second radiating branch node is provided with a plurality of third conductive holes, the fourth radiating branch node is provided with a plurality of fourth conductive holes, some of the fourth conductive holes correspond to the third conductive holes, the second radiating branch node and the fourth radiating branch node are arranged back to back and are conductively connected through the third conductive holes and / or the fourth conductive holes.

[0013] As a further improvement of the present invention, the first radiating branches are arranged in a cone shape, the second radiating branches are arranged in an L shape, and the width of the first radiating branches gradually decreases toward the second radiating branches.

[0014] As a further improvement of the present invention, the third radiation branch and the fourth radiation branch are coupled and connected, and a vertical projection of the fourth radiation branch covers a vertical projection of the second radiation branch.

[0015] The object of the present invention is to provide a wireless terminal device to better utilize the above-mentioned full-band antenna.

[0016] In order to solve the above technical problems, the present invention provides a wireless terminal device, which includes the above-mentioned full-band antenna.

[0017] The present invention provides a full-band antenna and a wireless terminal device, wherein the full-band antenna includes a substrate, a ground feed component, a first radiating component, and a second radiating component. The first radiating component includes a first radiating branch and a second radiating branch, and the first radiating branch and the second radiating branch are located on one side of the substrate; the second radiating component includes a third radiating branch and the fourth radiating branch, and the third radiating branch and the fourth radiating branch are located on the other side of the substrate; the first radiating branch and the third radiating branch are arranged back to back and conductively connected to each other, and the second radiating branch and the fourth radiating branch are arranged back to back and conductively connected to each other. The full-band antenna of the present invention can not only achieve miniaturization of the antenna as a whole, but also effectively expand the bandwidth of the antenna as a whole, thereby effectively improving the radiation gain of the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the structure of the full-band antenna of the present invention.

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

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

[0021] Figure 4 This is a schematic diagram of the connection between the first radiation component and the ground feed component of the full-band antenna of the present invention.

[0022] The descriptions of the reference numerals are as follows:

[0023] Substrate 10, ground feeding component 20, coaxial line 21, feeding point 22, grounding point 23, first radiation component 30, first radiation branch 31, main radiation branch 310, broken line radiation branch 311, impedance transformer 312, first low-frequency radiation branch 313, second low-frequency radiation branch 314, second radiation branch 32, second radiation component 40, third radiation branch 41, fourth radiation branch 42, intermediate frequency radiation branch 420, high frequency radiation branch 421, first conductive hole 50, second conductive hole 51, third conductive hole 52, fourth conductive hole 53. DETAILED DESCRIPTION

[0024] The following, combined with the accompanying drawings and specific embodiments, further describes the full-band antenna proposed in the present invention and the wireless terminal device using the same. It should be noted that the drawings are highly simplified and not precisely scaled, serving only to facilitate and clearly illustrate the embodiments of the present invention. Furthermore, the structures shown in the drawings are often portions of the actual structure. In particular, different drawings may use different scales, depending on the emphasis they require.

[0025] The present invention provides a full-band antenna that can be applied in multiple scenarios, such as wireless terminal devices. Specifically, 5GCPE is a new type of wireless terminal access device that can receive wireless signals from wireless routers, wireless access points, and wireless base stations. Like a mobile phone, CPE can access the mobile network by inserting a card, acting directly as a wired network interface or converting it into a WiFi signal, providing device connectivity within a home or office environment.

[0026] like Figure 1 As shown, specifically, the full-band antenna includes a substrate 10, a ground feed component 20, a first radiating component 30 and a second radiating component 40, the first radiating component 30 includes a first radiating branch 31 and a second radiating branch 32, and the first radiating branch 31 and the second radiating branch 32 are located on one side of the substrate 10; the second radiating component 40 includes a third radiating branch 41 and a fourth radiating branch 42, and the third radiating branch 41 and the fourth radiating branch 42 are located on the other side of the substrate 10; the first radiating branch 31 and the third radiating branch 41 are arranged back to back and are conductively connected to each other, and the second radiating branch 32 and the fourth radiating branch 42 are arranged back to back and are conductively connected to each other.

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

[0028] like Figure 2 and Figure 4As shown, preferably, the ground feed component 20 is configured to feed the coaxial line 21, including a feeding point 22 and a grounding point 23, to electrically connect the first radiating component 30 and the second radiating component 40. Furthermore, the first radiating branch 31 includes a main radiating branch 310, a zigzag radiating branch 311 and an impedance converter 312. The main radiating branch 310, the zigzag radiating branch 311 and the impedance converter 312 are connected in sequence, and the three are located on the same horizontal line. The impedance converter 312 here can play an impedance adjustment role, which plays a key role in adjusting standing waves and expanding bandwidth. Impedance matching is achieved to ensure maximum power transmission of the signal and reduce signal reflection. The zigzag radiating branch 311 can also play an important role in widening the bandwidth and adjusting standing waves of the antenna as a whole. The main radiating branch 310 adopts a microstrip structure with a length of λ / 4 (λ is the working wavelength). The width is determined according to 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 branch 311 uses a serpentine routing to create an equivalent electrical length extension structure, extending the radiation band by 12%-15% toward the low-frequency end. Impedance transformer 312 utilizes a tapered microstrip design, gradually transitioning according to the identity transformation principle to achieve impedance matching from 50Ω to 75Ω. All three components are integrated using a coplanar waveguide process on an FR4 substrate 10.

[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 ground point 23, and the feed point 22 is electrically connected to the impedance transformer 312. The second radiating branch 32 is located next to the impedance transformer 312.

[0030] The third radiating branch 41 and the first radiating antenna are both configured as sheet-shaped patch antennas. The first radiating branch 31 is provided with a plurality of first conductive vias 50, and the third radiating branch 41 is provided with a plurality of second conductive vias 51, some of which correspond to the first conductive vias 50. The first radiating branch 31 and the third radiating branch 41 are arranged opposite each other and are conductively connected through the first conductive vias 50 and / or the second conductive vias 51. Specifically, the main radiating branch 310, as well as the first low-frequency radiating branch 313 and the second low-frequency radiating branch 314 capable of controlling and adjusting the low frequency, are connected to the third radiating branch 41 on the other side of the substrate 10, where they are connected through the first conductive vias 50 and / or the second conductive vias 51. This arrangement can achieve a widened low-frequency band of the entire antenna. The second low-frequency radiating branch 314 can act as an independent radiator, conductively connected to the radiating branch on the other side of the substrate 10, thereby achieving the effect of adjusting and widening the low-frequency band.

[0031] The second radiating branch 32 and the fourth radiating branch 42 are both configured as sheet-shaped patch antennas. The second radiating branch 32 is provided with a plurality of third conductive vias 52, and the fourth radiating branch 42 is provided with a plurality of fourth conductive vias 53, some of which correspond to the third conductive vias 52. The second radiating branch 32 and the fourth radiating branch 42 are disposed opposite each other and are conductively connected via the third conductive vias 52 and / or the fourth conductive vias 53. Specifically, the third radiating branch 41 and the fourth radiating branch 42 are both independent radiators, forming a microstrip line body difference with the first radiating branch 31 and the second radiating branch 32, thereby effectively increasing the overall bandwidth of the antenna.

[0032] Specifically, the first radiating branch 31 is arranged in a conical shape, and the second radiating branch 32 is arranged in an L shape. The width of the first radiating branch 31 gradually decreases toward the direction of the second radiating branch 32. The third radiating branch 41 and the fourth radiating branch 42 are coupled and connected, and the vertical projection of the fourth radiating branch 42 covers the vertical projection of the second radiating branch 32. Such an arrangement can achieve gradual impedance matching of the overall antenna, reduce the reflection loss from the feeding point 22 to the radiation end, and improve the energy transmission efficiency. The antenna radiation directivity is also enhanced. The L-shaped branch can guide the radiation beam to deflect in a specific direction, enhance the front and rear walls of the antenna, and is suitable for directional radiation needs. Compact multi-band operation, the combination of conical and L-shaped and coupled branches achieves 2.5 / 5GHz dual-band or multi-band coverage, which is suitable for scenarios such as WiFi5G. Low profile and high gain, the overlapping projection design enhances radiation efficiency in a limited space. Through geometric gradient, coupled feeding and spatial field control, the impedance matching, multi-frequency resonance and radiation directivity are comprehensively optimized, which is suitable for the needs of modern communication systems for wide bandwidth, high gain and miniaturization.

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

[0034] In summary, the present invention provides a full-band antenna and a wireless terminal device. The full-band antenna includes a substrate 10, a ground feed component 20, a first radiating component 30 and a second radiating component 40. The first radiating component 30 includes a first radiating branch 31 and a second radiating branch 32, and the first radiating branch 31 and the second radiating branch 32 are located on one side of the substrate 10; the second radiating component 40 includes a third radiating branch 41 and a fourth radiating branch 42, and the third radiating branch 41 and the fourth radiating branch 42 are located on the other side of the substrate 10; the first radiating branch 31 and the third radiating branch 41 are arranged back to back and are conductively connected to each other, and the second radiating branch 32 and the fourth radiating branch 42 are arranged back to back and are conductively connected to each other.

[0035] Specifically, the first radiation branch 31 and the third radiation branch 41 are conducted in opposite directions, so that the current distribution can be balanced. The symmetrical structures arranged in opposite directions can offset the common mode current, reduce the unbalanced effect of the feeding network, and reduce the cross-polarization level. In addition, the bandwidth can be widened, the conductive connection forms a ring current path, which is equivalent to increasing the electrical length of the radiator, stimulating multi-resonance modes, and expanding the working bandwidth. Finally, the radiation efficiency can be effectively enhanced. The combination of the gradient impedance of the first radiation branch 31 and the complementary shape of the third radiation branch 41 can optimize the surface current continuity and reduce edge scattering loss. It can be seen that the third radiation branch 41 of the present invention can be set to a rectangle or a reverse rectangle in the opposite direction of the first radiation branch 31. Of course, it can also be set to other shapes, as long as it can complement the first radiation branch 31, optimize the surface current continuity, and reduce edge scattering loss. There are no excessive restrictions here.

[0036] The second radiating branch 32 and the fourth radiating branch 42 are connected in opposite directions, which not only enables antenna pattern control, but specifically, the symmetrical layout of the second radiating branch 32 and the fourth radiating branch 42 can form a directional radiation beam. By adjusting the phase difference through the conductive connection, beam shaping can be achieved, such as improving end-fire or wide-angle coverage. It can also enhance low-frequency resonance. The projection of the fourth radiating branch 42 covers the second radiating branch 32. Combined with the line-of-sight parallel inductance effect of the conductive connection, it can enhance the current in the low-frequency band and improve the low-frequency radiation efficiency. Finally, it can achieve the overall structural stability of the antenna. The opposite conductive connection forms a mechanically symmetrical support, reducing the impact of processing tolerances on electrical performance.

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

[0038] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other. In addition, the different parts between the various embodiments can also be used in combination with each other, and the present invention is not limited to this.

[0039] The above description is only a description of the preferred embodiments of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A full-band antenna, characterized by: The full-band antenna includes a substrate, a ground feed component, a first radiating component and a second radiating component. The first radiating component includes a first radiating branch and a second radiating branch, and the first radiating branch and the second radiating branch are located on one side of the substrate; the second radiating component includes a third radiating branch and the fourth radiating branch, and the third radiating branch and the fourth radiating branch are located on the other side of the substrate; the first radiating branch and the third radiating branch are arranged back to back and are conductively connected to each other, and the second radiating branch and the fourth radiating branch are arranged back to back and are conductively connected to each other.

2. The full-band antenna according to claim 1, characterized in that: The ground feeding component is configured as a coaxial line feed, including a feeding point and a grounding point to electrically connect the first radiating component and the second radiating component.

3. The full-band antenna according to claim 1, wherein: The first radiation branch includes a main radiation branch, a broken line radiation branch and an impedance converter. The main radiation branch, the broken line radiation branch and the impedance converter are connected in sequence and are located on the same horizontal line.

4. The full-band antenna according to claim 1, wherein: The first radiation branch further includes a first low-frequency radiation branch and a second low-frequency radiation branch. The first low-frequency radiation branch is connected to the main radiation branch, and the second low-frequency radiation branch is coupled to the first low-frequency radiation branch.

5. The full-band antenna according to claim 2, characterized in that: The second radiation branch is electrically connected to the ground point, the feeding point is electrically connected to the impedance converter, and the second radiation branch is located beside the impedance converter.

6. The full-band antenna according to claim 1, characterized in that: The third radiating branch and the first radiating antenna are both configured as sheet-shaped patch antennas, the first radiating branch is provided with a plurality of first conductive holes, the third radiating branch is provided with a plurality of second conductive holes, some of the second conductive holes correspond to the first conductive holes, the first radiating branch and the third radiating branch are arranged back to back and are conductively connected through the first conductive holes and / or the second conductive holes.

7. The full-band antenna according to claim 1, characterized in that: The second radiating branch node and the fourth radiating branch node are both configured as sheet-shaped patch antennas, the second radiating branch node is provided with a plurality of third conductive holes, the fourth radiating branch node is provided with a plurality of fourth conductive holes, some of the fourth conductive holes correspond to the third conductive holes, the second radiating branch node and the fourth radiating branch node are arranged back to back and are conductively connected through the third conductive holes and / or the fourth conductive holes.

8. The full-band antenna according to claim 1, wherein: The first radiating branch is arranged in a cone shape, the second radiating branch is arranged in an L shape, and the width of the first radiating branch gradually decreases toward the second radiating branch.

9. The full-band antenna according to claim 1, characterized in that: The third radiation branch is coupled to the fourth radiation branch, and a vertical projection of the fourth radiation branch covers a vertical projection of the second radiation branch.

10. A wireless terminal device, characterized in that: The wireless terminal device includes the full-band antenna according to any one of claims 1 to 9.

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