Antenna structure

Abstract

The invention provides an antenna structure. The antenna structure comprises a conductor substrate, a coupling feed-in piece and a shielding piece, the conductor substrate has a slot. The coupling feed-in member and the slot are disposed on the conductor substrate in a partially overlapping manner. The shielding member is partially overlapped with the slot hole and is arranged on the conductor substrate in a manner of being separated from the coupling feed-in member, wherein the shielding member can move along the slot hole.

Description

Technical Field

[0001] The present invention relates to an antenna structure, and in particular to an antenna structure capable of achieving a frequency transfer effect according to requirements. Background Art

[0002] The antenna is one of the most important components in wireless communication products. The excellent antenna characteristics are crucial to the quality of communication. Today's wireless communication products are increasingly emphasizing practicality and technology, and the design of antenna structures is becoming more and more diverse. However, the operating frequency band of the antenna structure is closely related to the design of the antenna structure. Once the design of the antenna structure is determined, it is often impossible to adjust the operating frequency band according to demand. Summary of the invention

[0003] The invention relates to an antenna structure, which achieves the effect of frequency transfer by arranging a shielding member movable along a slot.

[0004] Based on the above objectives, the present invention provides an antenna structure, which includes: a conductor substrate having a slot; a coupling feed element disposed on the conductor substrate and partially overlapping the slot; and a shielding element disposed on the conductor substrate and partially overlapping the slot and separated from the coupling feed element, wherein the shielding element moves along the slot.

[0005] In a preferred embodiment, the coupling feed element and the slot allow the antenna structure to resonate with a first frequency band; the shielding element moves along the slot to change the first frequency band.

[0006] In a preferred embodiment, the coupling feed element is an antenna resonance unit.

[0007] In a preferred embodiment, the antenna structure resonates with a second frequency band, and the second frequency band includes an operating frequency band of the antenna resonant unit and / or a multiple of the first frequency band.

[0008] In a preferred embodiment, the shielding member is made of a conductive material; or, the shielding member includes a conductive portion and a non-conductive portion, and the conductive portion is disposed between the conductor substrate and the non-conductive portion.

[0009] In a preferred embodiment, the shielding member is slidably disposed on the conductive substrate and positioned at any position of the slot.

[0010] In a preferred embodiment, the slot is a straight slot, an L-shaped slot or a T-shaped slot.

[0011] In a preferred embodiment, the coupling feeding component is located at one end of the slot, and the shielding component is disposed relative to the coupling feeding component.

[0012] In a preferred embodiment, the closer the shielding element is to the coupling feeding element, the higher the frequency resonated by the coupling feeding element and the slot hole.

[0013] In a preferred embodiment, the slot has an open portion and a closed portion connected to each other, the open portion forms an opening at the edge of the conductive substrate, and the coupling feed component, the shielding component and the closed portion overlap each other.

[0014] In a preferred embodiment, the closing portion has two long sides and two short sides, and the shielding member is moved along the long sides of the closing portion.

[0015] In a preferred embodiment, the conductor substrate has a first surface and a second surface opposite to each other, and the coupling feed component and the shielding component are located on the first surface of the conductor substrate; or, the conductor substrate has a first surface and a second surface opposite to each other, and the coupling feed component and the shielding component are located on the first surface and the second surface of the conductor substrate respectively.

[0016] Compared with the prior art, the antenna structure proposed in the present invention can obtain the required resonant frequency of the antenna structure according to the actual design requirements by designing the slot shape and appropriately selecting the relative arrangement positions of the coupling feed, shielding member and slot. In addition, the shielding member can also move relative to the slot to achieve the effect of frequency transfer. In this way, the appropriate operating frequency band can be adjusted according to different wireless communication products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1A A conductive substrate is shown according to an embodiment of the present invention.

[0018] Figure 1B FIG. 4 is an antenna structure shown according to an embodiment of the present invention.

[0019] Figure 1C yes Figure 1B Side view of the antenna structure.

[0020] Figure 1D It shows the right Figure 1B Results of the antenna structure before and after frequency transfer.

[0021] Figure 1E It shows the right Figure 1B The antenna gain before and after frequency shift of the antenna structure.

[0022] Figure 2A FIG. 1 is a modified antenna structure according to an embodiment of the present invention.

[0023] Figure 2B yes Figure 2A Side view of the antenna structure.

[0024] Figure 3 FIG. 4 is an antenna structure shown in FIG. 1 according to another embodiment of the present invention.

[0025] Figure 4 FIG. 1 is a modified antenna structure according to another embodiment of the present invention.

[0026] Figure 5 FIG. 4 is an antenna structure shown according to yet another embodiment of the present invention.

[0027] Figure 6 FIG. 4 is a modified antenna structure according to yet another embodiment of the present invention. DETAILED DESCRIPTION

[0028] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed description is given in conjunction with the embodiments.

[0029] The following will describe in detail various embodiments of the present invention, and will be illustrated with drawings. In addition to these detailed descriptions, the present invention can also be widely implemented in other embodiments, and any easy replacement, modification, and equivalent changes of the embodiments are included in the scope of the present invention and are subject to the subsequent claims. In the description of the specification, in order to give the reader a more complete understanding of the present invention, many specific details and implementation examples are provided; however, these specific details and implementation examples should not be regarded as limitations of the present invention. In addition, well-known steps or elements are not described in detail to avoid unnecessary limitations of the present invention.

[0030] The present invention proposes an antenna structure that can be applied to any wireless communication product, such as portable computers, netbook computers, tablet computers, mobile phones, wristwatch devices, etc. In wireless communication products, space is very valuable. In addition, for the sake of aesthetics and heat dissipation, the shells of these products are sometimes constructed of conductive materials that block antenna signals. In order to solve the problem of antenna receiving and transmitting signals in this case, the antenna structure proposed in the embodiment is, for example, a slot antenna. The slot antenna is made on a conductive substrate (such as the metal shell, conductive surface, cover plate, etc. of the product) to improve space utilization in response to the design requirements of thin and light wireless communication products. Figure 1A As shown, it is a conductive substrate 110 according to an embodiment of the present invention. The conductive substrate 110 is made of metal, for example, and may have a slot 111. Figure 1AIn the illustrated embodiment, the slot 111 is a T-shaped slot, but the present invention is not limited thereto. The slot 111 may have an open portion 111a and a closed portion 111b that are connected to each other. The open portion 111a forms an opening at an edge 110e of the conductive substrate 110. The closed portion 111b has two oppositely disposed long sides 111b1 and 111b2, and two oppositely disposed short sides 111b3 and 111b4. The short sides 111b3 and 111b4 are adjacent to the two long sides 111b1 and 111b2, respectively. The long side 111b2 is connected to the open portion 111a. The slot 111 may be filled with a gaseous dielectric (e.g., air); the slot 111 may also be filled with a solid dielectric, such as plastic or epoxy resin, to form an integrated appearance with the conductive substrate 110, and to prevent dust, liquid or other foreign matter from penetrating.

[0031] Figure 1B is an antenna structure 100 according to an embodiment of the present invention; Figure 1C yes Figure 1B The antenna structure 100 is a side view of the antenna structure 100. The antenna structure 100 is Figure 1A The conductor substrate 110 is shown in FIG. Figure 1A , Figure 1B and Figure 1C The antenna structure 100 further includes a coupling feed element 120 and a shielding element 130. The coupling feed element 120 is disposed on the conductive substrate 110 so as to partially overlap with the slot 111.

[0032] The coupling feed 120 has a feeding portion FP, which is used to connect to a signal source (such as a coaxial cable 140) to feed the signal into the coupling feed 120 via the feeding portion FP. When the signal is fed into the coupling feed 120, the coupling feed 120 and the slot 11 can make the antenna structure 100 resonate with the first frequency band.

[0033] In one embodiment, the coupling feed 120 may be an antenna resonant unit. The coupling feed 120 may include a carrier 121 and an antenna portion 122. The carrier 121 is disposed on the first surface 110u of the conductive substrate 110, such as an FR4 substrate, a printed circuit board (PCB), a flexible circuit board (FCB), etc., which can be selected according to actual needs and is not limited here. The antenna portion 122 is a conductive structure formed on the carrier 121, which can be a conductive sheet structure formed on the carrier 121. The shape of the antenna portion 122 in the embodiment is rectangular, but not limited thereto. The antenna portion 122 can be designed into different shapes according to needs, such as a patch shape, an inverted F shape, etc., and the present invention is not limited thereto. The feeding portion FP can be disposed on the antenna portion 122. When a signal is fed into the antenna portion 122, the antenna portion 122 can interact with the slot 11 to make the antenna structure 100 resonate with the first frequency band. In addition, the antenna structure 100 may also resonate with a second frequency band, and the second frequency band may include an operating frequency band of the antenna resonant unit and / or a multiple of the first frequency band.

[0034] If the first frequency band is the resonant frequency band that the antenna structure 100 is mainly designed to resonate, the frequency transfer effect can be achieved by moving the shielding member 130, thereby adjusting to the ideal frequency. Figure 1A , Figure 1B and Figure 1C The shielding element 130 partially overlaps with the slot 111 and is disposed on the conductive substrate 110 separately from the coupling feed element 120. Figure 1B and Figure 1C As shown by the arrow in , the shielding member 130 can move along the slot 111, thereby changing the first frequency band. The shielding member 130 can move relative to the slot 111 by any sliding mechanism. For example, a slide groove and a slider can be respectively disposed between the shielding member 130 and the conductive substrate 110, so that the shielding member 130 can move along the slot 111. In one embodiment, the shielding member 130 can be made of a conductive material, but is not limited thereto. In other embodiments, such as Figure 1C As shown, the shielding member 130 may include a conductive portion 131 and a non-conductive portion 132, wherein the conductive portion 131 is disposed between the conductive substrate 110 and the non-conductive portion 132. The shielding member 130 may be slidably disposed on the conductive substrate 110 and may be positioned at any position of the slot 111, thereby achieving a frequency shift effect of the first frequency band.

[0035] Figure 1D It shows the right Figure 1B Results of the antenna structure 100 before and after frequency transfer; Figure 1E It shows the right Figure 1BThe antenna gain of the antenna structure 100 before and after the frequency shift. Please refer to Figure 1B , Figure 1D and Figure 1E In one embodiment, before the shielding member 130 is displaced, the first frequency band is between 699 and 788 MHz, and the highest radiation efficiency is generated at the resonant frequency of 740 MHz. When the shielding member 130 is displaced to the right by, for example, 18 mm, the first frequency band is changed to be between 824 and 960 MHz, and the highest radiation efficiency is generated at the resonant frequency of 836.5 MHz. Here, the shielding member 130 is displaced to the right and closer to the coupling feeder 120, so that the resonant frequency is shifted toward the high frequency direction, thereby achieving the effect of frequency shifting of the first frequency band. Relatively speaking, the displacement of the shielding member 130 will not have much impact on the second frequency band (between 1710 and 2690 MHz).

[0036] In the above embodiment, the coupling feed-in element 120 is located at one end of the slot 111, and the shielding element 130 is disposed relative to the coupling feed-in element 120. Figure 1A and Figure 1B , the coupling feed 120 and the shielding member 130 overlap with the closed portion 111b of the slot 111. The coupling feed 120 is disposed at one end of the closed portion 111b close to the short side 111b4, and the shielding member 130 is disposed at one end of the closed portion 111b close to the short side 111b3, and can move along the long sides 111b1 and 111b2 of the closed portion 111b, but is not limited thereto. The relative arrangement positions of the coupling feed 120, the shielding member 130 and the slot 111 can be selected in different ways according to actual design requirements. For example, the coupling feed 120 and / or the shielding member 130 can also overlap with the open portion 111a of the slot 111; or, the coupling feed 120 and the shielding member 130 are not limited to being disposed at opposite ends of the closed portion 111b.

[0037] Figure 2A is an antenna structure 200 according to a variation of an embodiment of the present invention; Figure 2B yes Figure 2A A side view of the antenna structure 200 is shown. Figures 1A to 1C In the illustrated embodiment, the coupling feed element 120 and the shielding element 130 are located on the same side of the conductive substrate 110, for example, both are located on the first surface 110u of the conductive substrate 110. Figure 2A and Figure 2B In the illustrated embodiment, the coupling feed element 120 and the shielding element 130 may be located on different sides of the conductive substrate 110. For example, the coupling feed element 120 is located on the first surface 110u of the conductive substrate 110, and the shielding element 130 is located on the second surface 110b of the conductive substrate 110, wherein the first surface 110u and the second surface 110b are arranged opposite to each other.

[0038] Please refer to Figure 3 , which is an antenna structure 300 according to another embodiment of the present invention. The coupling feed element 120 and the shielding element 130 are located on the same side of the conductor substrate 310, for example, both are located on the first surface 310u of the conductor substrate 310. Figure 3 In the embodiment shown, the slot 311 is a straight slot. The coupling feed-in element 120 and the shielding element 130 are respectively disposed at opposite ends of the slot 311. Similarly, the shielding element 130 can move along the slot 311 to achieve the effect of frequency shifting in the first frequency band.

[0039] Please refer to Figure 4 , which is an antenna structure 400 according to another embodiment of the present invention. Figure 4 In the illustrated embodiment, the coupling feed element 120 and the shielding element 130 may be located on different sides of the conductive substrate 310. For example, the coupling feed element 120 is located on the first surface 310u of the conductive substrate 110, and the shielding element 130 is located on the second surface (not shown) of the conductive substrate 310, wherein the first surface 310u and the second surface are arranged opposite to each other.

[0040] Please refer to Figure 5 , which is an antenna structure 500 according to another embodiment of the present invention. The coupling feed element 120 and the shielding element 130 are located on the same side of the conductor substrate 510, for example, both are located on the first surface 510u of the conductor substrate 510. Figure 5 In the embodiment shown, the slot 511 is an L-shaped slot. The slot 511 may have an open portion 511a and a closed portion 511b connected to each other. The coupling feed-in element 120 and the shielding element 130 are respectively disposed at opposite ends of the closed portion 511b, and the shielding element 130 can move along the long side of the closed portion 511b to achieve the effect of frequency transfer in the first frequency band.

[0041] As described in the previous examples, the slot 551 can be a straight, T-shaped or L-shaped slot, which has a narrower dimension in one direction and a longer dimension in another direction; in other embodiments, the slot 551 can also have any suitable shape, for example, a shape with a curved edge, an arc shape, etc., but the present invention is not limited to this.

[0042] Please refer to Figure 6 , which is an antenna structure 600 according to a variation of another embodiment of the present invention. Figure 6 In the illustrated embodiment, the coupling feed element 120 and the shielding element 130 may be located on different sides of the conductive substrate 510. For example, the coupling feed element 120 is located on the first surface 510u of the conductive substrate 510, and the shielding element 130 is located on the second surface (not shown) of the conductive substrate 510, wherein the first surface 510u and the second surface are arranged opposite to each other.

[0043] According to the aforementioned antenna structure, the resonant frequency required by the antenna structure can be obtained according to actual design requirements by designing the slot shape and appropriately selecting the relative placement of the coupling feed, shielding member and slot. In addition, the shielding member can also move relative to the slot to achieve the effect of frequency transfer. In this way, the appropriate operating frequency band can be adjusted according to different wireless communication products.

[0044] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the present invention are all within the scope of patent protection of the present invention.

Claims

1. An antenna structure, characterized in that: include: A conductive substrate having slots; A coupling feed-in component is disposed on the conductive substrate so as to overlap with the slot portion; as well as The shielding element is partially overlapped with the slot and is disposed on the conductor substrate separately from the coupling feed-in element, wherein the shielding element moves along the slot.

2. The antenna structure according to claim 1, characterized in that: The coupling feed component and the slot hole make the antenna structure resonate with a first frequency band; the shielding component moves along the slot hole to change the first frequency band.

3. The antenna structure according to claim 2, characterized in that: The coupling feeding element is an antenna resonance unit.

4. The antenna structure according to claim 3, characterized in that: The antenna structure resonates with a second frequency band, and the second frequency band includes an operating frequency band of the antenna resonant unit and / or a multiple of the first frequency band.

5. The antenna structure according to claim 1, characterized in that: The shielding member is made of a conductive material; or, The shielding member comprises a conductive portion and a non-conductive portion, wherein the conductive portion is arranged between the conductor substrate and the non-conductive portion.

6. The antenna structure according to claim 1, characterized in that: The shielding member can be slidably arranged on the conductor substrate and positioned at any position of the slot.

7. The antenna structure according to claim 1, characterized in that: The slot is a straight slot, an L-shaped slot or a T-shaped slot.

8. The antenna structure according to claim 1, characterized in that: The coupling and feeding component is located at one end of the slot, and the shielding component is arranged relative to the coupling and feeding component.

9. The antenna structure according to claim 8, characterized in that: The closer the shielding element is to the coupling feeding element, the higher the frequency resonated by the coupling feeding element and the slot hole.

10. The antenna structure according to claim 1, characterized in that: The slot has an open portion and a closed portion connected to each other. The open portion forms an opening at the edge of the conductor substrate. The coupling feed-in component, the shielding component and the closed portion overlap each other.

11. The antenna structure according to claim 10, characterized in that: The closing portion has two long sides and two short sides, and the shielding element moves along the long sides of the closing portion.

12. The antenna structure according to claim 1, characterized in that: The conductive substrate has a first surface and a second surface opposite to each other, and the coupling feed component and the shielding component are located on the first surface of the conductive substrate; or, The conductor substrate has a first surface and a second surface opposite to each other. The coupling and feeding component and the shielding component are respectively located on the first surface and the second surface of the conductor substrate.

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