Antenna system, antenna device, and antenna structure

Abstract

The invention discloses an antenna system, an antenna device and an antenna structure. The antenna structure comprises an annular section, and a bandwidth adjusting section and a frequency adjusting section which are surrounded by the annular section; the annular section is provided with a surrounding part, and a first end part and a second end part which are respectively connected to two ends of the surrounding part and are spaced from each other; the bandwidth adjusting section is connected to the first end part and a local part of the surrounding part adjacent to the first end part, and has a first layout length along a first direction; the frequency adjusting section is connected to the bandwidth adjusting section and has a second layout length greater than the first layout length along the first direction; the antenna structure can be used for constructing a three-dimensional induction space through a communication element so as to obtain a signal of at least one sensor located in the three-dimensional induction space. According to the antenna system, the antenna device and the antenna structure, the signal of at least one sensor located in the three-dimensional sensing space can be accurately obtained, and external interference can be effectively avoided.

Description

Technical Field

[0001] The present invention relates to an antenna, and in particular to an antenna system, an antenna device, and an antenna structure. Background Art

[0002] The operating range of existing wireless reading devices is not specifically limited or designed, so existing wireless reading devices are often interfered by similar frequency bands during operation. Therefore, the inventor believes that the above defects can be improved, and has devoted himself to research and applied scientific principles, and finally proposed a reasonable design and effective improvement of the present invention. Summary of the invention

[0003] The embodiments of the present invention provide an antenna system, an antenna device, and an antenna structure, which can effectively improve the defects that may occur in existing wireless reading devices.

[0004] The embodiment of the present invention discloses an antenna device, which includes: an antenna structure, including: a ring segment, having a first end, a second end spaced from the first end, and a surrounding portion connected to the first end and the second end; wherein a gap is formed between the first end and the second end, and the first end, the second end, and the surrounding portion together surround a layout area with a connected gap; a bandwidth adjustment segment, located within the layout area, and the bandwidth adjustment segment is connected to the first end and a part of the surrounding portion adjacent thereto; wherein the bandwidth adjustment segment has a first layout length along a first direction; and a frequency adjustment segment, located within the layout area, and the frequency adjustment segment is connected to the bandwidth adjustment segment; wherein the frequency adjustment segment has a second layout length along the first direction that is greater than the first layout length; and a communication element, electrically coupled to the first end and the second end of the ring segment of the antenna structure; wherein the antenna structure can construct a three-dimensional sensing space through the communication element to obtain a signal of at least one sensor located within the three-dimensional sensing space.

[0005] An embodiment of the present invention also discloses an antenna structure, which includes: a ring segment having a first end, a second end spaced apart from the first end, and a surrounding portion connected to the first end and the second end; wherein a gap is formed between the first end and the second end, and the first end, the second end, and the surrounding portion together surround a layout area having a connected gap; a bandwidth adjustment segment located within the layout area, and the bandwidth adjustment segment is connected to the first end and a part of the surrounding portion adjacent thereto; wherein the bandwidth adjustment segment has a first layout length along a first direction; and a frequency adjustment segment located within the layout area, and the frequency adjustment segment is connected to the bandwidth adjustment segment; wherein the frequency adjustment segment has a second layout length along the first direction that is greater than the first layout length; wherein the antenna structure can be used to construct a three-dimensional sensing space through a communication element to obtain a signal from at least one sensor located within the three-dimensional sensing space.

[0006] The embodiment of the present invention also discloses an antenna system, which includes: an antenna device, which includes: an antenna structure, which includes: a ring segment, having a first end, a second end spaced from the first end, and a surrounding portion connected to the first end and the second end; wherein a gap is formed between the first end and the second end, and the first end, the second end, and the surrounding portion together surround a layout area formed with a connecting gap; a bandwidth adjustment segment, which is located within the layout area, and the bandwidth adjustment segment is connected to the first end and a part of the surrounding portion adjacent thereto; wherein the bandwidth adjustment segment has a first layout length along a first direction; and a frequency adjustment segment, which is located within the layout area, and the frequency adjustment segment is connected to the bandwidth adjustment segment; wherein the frequency adjustment segment has a second layout length along the first direction that is greater than the first layout length; and a communication element, which is electrically coupled to the first end and the second end of the ring segment of the antenna structure; wherein the antenna structure can construct a three-dimensional sensing space through the communication element; and a plurality of sensors, which are used to be respectively arranged in a plurality of chambers that are independent of each other and located within the three-dimensional sensing space, so that the antenna device can obtain signals from the plurality of sensors.

[0007] In summary, the antenna system, antenna device, and antenna structure disclosed in the embodiments of the present invention generate a stereoscopic sensing space of a preset range by cooperating with the antenna structure and the communication element, so as to accurately obtain the signal of at least one sensor located within the stereoscopic sensing space and effectively avoid external interference.

[0008] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, such description and drawings are only used to illustrate the present invention and are not intended to limit the protection scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a three-dimensional schematic diagram of an antenna system according to Embodiment 1 of the present invention.

[0010] Figure 2 for Figure 1 A three-dimensional schematic diagram of the antenna system after adjusting its three-dimensional sensing space.

[0011] Figure 3 for Figure 1 A plan view of the antenna structure.

[0012] Figure 4 For related Figure 3 Simulation test diagram of the antenna structure (a).

[0013] Figure 5 For related Figure 3 Figure 2: Simulation test diagram of the antenna structure.

[0014] Figure 6 For related Figure 3 Figure 3: Simulation test diagram of antenna structure.

[0015] Figure 7 The schematic plan view of the antenna structure of the first embodiment of the present invention is a polygonal outline.

[0016] Figure 8 For related Figure 7 Simulation test diagram of the antenna structure.

[0017] Fig. 9 This is a plan schematic diagram of an antenna structure with an elliptical outline according to the first embodiment of the present invention.

[0018] Fig.10 For related Fig. 9 Simulation test diagram of the antenna structure.

[0019] Fig.11 The schematic diagram of the plane of the antenna structure of the first embodiment of the present invention is a triangular outline.

[0020] Fig.12 For related Fig.11 Simulation test diagram of the antenna structure.

[0021] Fig.13 It is a plan view of the antenna structure of the second embodiment of the present invention.

[0022] Fig.14 For related Fig.13 Simulation test diagram of the antenna structure.

[0023] Fig.15 It is a plan view schematically showing a variation of the antenna structure according to the second embodiment of the present invention.

[0024] Main component symbols:

[0025] 100 Antenna System

[0026] 10 Antenna Device

[0027] 1 Antenna structure

[0028] 11 Ring segment

[0029] 111 First end

[0030] 112 Second end

[0031] 113 Surrounding

[0032] 12 Bandwidth adjustment segments

[0033] 13 Frequency adjustment segment

[0034] 131 First Long Side

[0035] 132 Second Long Side

[0036] 14 Auxiliary adjustment section

[0037] 2 Communication components

[0038] 20 Sensors

[0039] 21 First Sensor

[0040] 22 Second sensor

[0041] 20a External sensor

[0042] 200 Chamber

[0043] 201 First Chamber

[0044] 202 Second Chamber

[0045] S Stereoscopic Sensing Space

[0046] R Layout Area

[0047] G1 Gap

[0048] G2 configuration distance

[0049] G3 Gap

[0050] D1 First direction

[0051] D2 Second direction

[0052] L Reference axis

[0053] L1 first layout length

[0054] L2 Second layout length

[0055] L3 Third layout length

[0056] W1 First layout width

[0057] W2 Second layout width

[0058] W3 Width

[0059] A1, A2, B1, B2, B3, C curves DETAILED DESCRIPTION

[0060] The following is an explanation of the implementation methods of the "antenna system, antenna device, and antenna structure" disclosed in the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual dimensions. It is stated in advance. The following implementation methods will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.

[0061] It should be understood that, although the terms "first", "second", "third", etc. may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are mainly used to distinguish one component from another component, or one signal from another signal. In addition, the term "or" used herein may include any one or more combinations of the associated listed items depending on the actual situation.

[0062] [Example 1]

[0063] See also Figures 1 to 12 As shown, it is the first embodiment of the present invention. Figure 1 and Figure 2 As shown, this embodiment discloses an antenna system 100, which can be applied to multiple independent chambers 200. That is, the multiple chambers 200 are separated and preferably have no spatial connection, and the multiple chambers 200 can be separated by radiative materials as required. The antenna system 100 includes an antenna device 10 and multiple sensors 20 matched with the antenna device 10.

[0064] Specifically, the plurality of sensors 20 are respectively disposed in the plurality of chambers 200 and are located within a three-dimensional sensing space S constructed by the antenna device 10, so that the antenna device 10 can obtain signals from the plurality of sensors 20, but the antenna device 10 is preferably unable to obtain signals from any external sensor 20a located outside the three-dimensional sensing space S. Figure 1 and Figure 2 The plurality of chambers 200 are presented as a first chamber 201 and a second chamber 202 , and the plurality of sensors 20 include a first sensor 21 located in the first chamber 201 , and a second sensor 22 located in the second chamber 202 .

[0065] It should be noted that, although the antenna device 10 is described in this embodiment as being used in conjunction with a plurality of sensors 20, the present invention is not limited thereto. For example, in other embodiments not shown in the present invention, the antenna device 10 may be used alone (e.g., sold) or used in conjunction with other components (e.g., the antenna device 10 may be used in conjunction with at least one sensor 20 located in the same chamber 200); or, the number of the plurality of sensors 20 and the number of the plurality of chambers 200 may be adjusted and varied according to design requirements (e.g., the number of the plurality of sensors 20 may be more than three, and the number of the plurality of chambers 200 may also be more than three).

[0066] The antenna device 10 includes an antenna structure 1 and a communication element 2 electrically coupled to the antenna structure 1 , so that the antenna structure 1 can construct a three-dimensional sensing space S through the communication element 2 , and thereby obtain a signal from at least one sensor 20 located in the three-dimensional sensing space S.

[0067] Furthermore, the three-dimensional sensing space S is roughly spherical and its radius can be changed by adjusting the transmission power of the communication element 2 according to actual needs. For example, the operation of the communication element 2 can be adjusted between a first transmission power and a second transmission power greater than the first transmission power to change the range of the three-dimensional sensing space S. Among them, the communication element 2 operating with the first transmission power can generate a smaller range of the three-dimensional sensing space S (e.g.: Figure 1 ), and the communication element 2 operating with the second transmission power can generate a larger three-dimensional sensing space S (such as: Figure 2 ).

[0068] In addition, the specific implementation type of the communication element 2 can be adjusted and changed according to different design requirements. In this embodiment, the communication element 2 is illustrated by a radio frequency identification (RFID) reader or a global system for mobile communications (GSM) receiver, but the present invention is not limited thereto.

[0069] It should be noted that, although the antenna structure 1 is described in this embodiment as being used in conjunction with the communication element 2, the present invention is not limited thereto. For example, in other embodiments not shown in the present invention, the antenna structure 1 may be used alone (e.g., sold) or used in conjunction with other components. The specific structure of the antenna structure 1 will be described below, and the connection relationship between the antenna structure 1 and other components will be described as appropriate.

[0070] like Figure 2 and Figure 3 As shown, the antenna structure 1 in this embodiment includes a ring segment 11, a bandwidth adjustment segment 12, and a frequency adjustment segment 13 connected together, and the bandwidth adjustment segment 12 and the frequency adjustment segment 13 are arranged in the area surrounded by the ring segment 11. The antenna structure 1 is suitable for a center frequency, and the circumference of the ring segment 11 is 70% to 100% of a wavelength corresponding to the center frequency.

[0071] Specifically, the ring segment 11 has a first end 111, a second end 112 spaced from the first end 111, and a surrounding portion 113 connected to the first end 111 and the second end 112. In the present embodiment, a gap G1 is formed between the first end 111 and the second end 112, and the ring segment 11 defines a reference axis L parallel to a first direction D1 and passing through the gap G1, and the ring segment 11 is preferably mirror-symmetrical to the reference axis L, but the present invention is not limited thereto.

[0072] The first end portion 111 and the second end portion 112 are each a long strip structure perpendicular to the first direction D1, and the first end portion 111 and the second end portion 112 are arranged in a straight line along a second direction D2 perpendicular to the first direction D1, and the communication element 2 is electrically coupled to (or connected to) the first end portion 111 and the second end portion 112. In other words, the distance between the first end portion 111 and the second end portion 112 (that is, the width of the gap G1) is not greater than 1% of the circumference of the ring segment 11.

[0073] The surrounding portion 113 is generally U-shaped, and the two ends of the surrounding portion 113 are respectively vertically connected to the first end 111 and the second end 112, so that the first end 111, the second end 112, and the surrounding portion 113 together surround a layout area R having a connecting gap G1. In other words, the layout area R (or the annular segment 11) in this embodiment Figure 3 Roughly rectangular in shape.

[0074] The bandwidth adjustment section 12 and the frequency adjustment section 13 are located within the layout area R and occupy approximately 20% to 55% of the layout area R, but are not limited thereto. The bandwidth adjustment section 12 is connected to the first end 111 of the annular section 11 and a portion of the surrounding portion 113 adjacent thereto (e.g., Figure 3 The bandwidth adjustment section 12 has at least 90% of its area located on one side of the reference axis L.

[0075] In this embodiment Figure 3 In this embodiment, the bandwidth adjustment section 12 is substantially rectangular and completely located on the upper side of the reference axis L, and the bottom edge of the bandwidth adjustment section 12 is aligned with the end edge of the first end portion 111 along the first direction D1. The bandwidth adjustment section 12 has a first layout length L1 along the first direction D1 and a first layout width W1 along the second direction D2. In this embodiment, the first layout length L1 is not greater than 12.5% ​​of the circumference (or not greater than 12.5% ​​of the wavelength corresponding to the center frequency), and the first layout width W1 is less than the first layout length L1 and is substantially equal to the length of the first end portion 111.

[0076] Furthermore, if Figure 4 As shown, its curve A1 is Figure 3 The antenna structure 1 has only the ring segment 11 and the bandwidth adjustment segment 12, and the curve A2 is Figure 3 The antenna structure 1 has only the ring segment 11 as the simulation test result; it can be clearly seen that the antenna structure 1 can be provided with a bandwidth adjustment segment 12, thereby significantly improving the bandwidth corresponding to -10dB (for example, the bandwidth of curve A1 can be improved to approximately twice the bandwidth of curve A2).

[0077] Furthermore, the frequency adjustment section 13 is connected to (the bottom edge of) the bandwidth adjustment section 12, and the frequency adjustment section 13 is spaced from another part of the surrounding portion 113 adjacent to the second end 112 by a configuration distance G2 along the second direction D2 (e.g.: Figure 3 ), but does not touch the second end 112.

[0078] Further, the frequency adjustment section 13 is a long strip structure parallel to the first direction D1, and the frequency adjustment section 13 is arranged along the reference axis L in this embodiment so that one end of the frequency adjustment section 13 is adjacent to the gap G1, but the present invention is not limited thereto. The frequency adjustment section 13 has a first long side 131 and a second long side 132 located on opposite sides, and the bandwidth adjustment section 12 is connected to the first long side of the frequency adjustment section 13. In other words, the bandwidth adjustment section 12 is connected between the frequency adjustment section 13 and the surrounding portion 113 along the second direction D2.

[0079] Specifically, the frequency adjustment segment 13 has a second layout length L2 along the first direction D1, and a second layout width W2 along the second direction D2. The second layout length L2 is greater than the first layout length L1, but not greater than 25% of the perimeter (or not greater than 25% of the wavelength corresponding to the center frequency); the second layout width W2 is greater than the width of the gap G1, but less than the first layout width W1.

[0080] Furthermore, if Figure 5 As shown, the curves B1, B2, and B3 are all as follows Figure 3 The simulation test results of the antenna structure 1 having the ring segment 11, the bandwidth adjustment segment 12, and the frequency adjustment segment 13 are shown, and the first layout length L1 is arranged from long to short as curve B1, curve B2, and curve B3; it can be clearly seen that the antenna structure 1 can change the center frequency corresponding to the antenna structure 1 by adjusting the first layout length L1 of the frequency adjustment segment 13.

[0081] Furthermore, if Figure 6 As shown, it is a schematic diagram comparing curve A2 and curve B1, from which it can be seen that the antenna structure 1 in this embodiment is provided with a bandwidth adjustment segment 12 and a frequency adjustment segment 13 with specific conditions (such as: the second layout length L2 is greater than the first layout length L1) at a specific position of the layout area R of the ring segment 11, so that the antenna structure 1 can have a larger bandwidth (such as: about twice as much) below the preset center frequency.

[0082] In addition, the shape of the ring segment 11 is Figure 3 The rectangular shape is used for illustration, but the shapes of the annular segment 11 and the bandwidth adjustment segment 12 can be adjusted according to design requirements, and the present invention is not limited to the above. Figure 3 For example, Figure 7 and Figure 8 As shown, the ring segment 11 may be of polygonal construction; or, as Fig. 9 and Fig.10 As shown, the ring segment 11 may be of elliptical configuration; or, as shown Fig.11 and Fig.12As shown, the ring segment 11 may be a triangular structure. Furthermore, after simulation tests, the above-mentioned various structures of the ring segment 11 can also make the antenna structure 1 have a larger bandwidth (eg, about twice) below the preset center frequency.

[0083] As described above, the antenna system 100 (or antenna device 10) in this embodiment can generate a stereoscopic sensing space S of a preset range through the cooperation of the antenna structure 1 and the communication element 2, so as to accurately obtain the signal of at least one sensor 20 located within the stereoscopic sensing space S and effectively avoid external interference.

[0084] [Example 2]

[0085] See also Figures 13 to 15 As shown, this is the second embodiment of the present invention. Since this embodiment is similar to the above-mentioned first embodiment, the similarities between the two embodiments will not be described in detail, and the differences between this embodiment and the above-mentioned first embodiment are roughly described as follows:

[0086] In this embodiment, if Fig.13 As shown, the antenna structure 1 includes an auxiliary adjustment section 14 located within the layout area R, and the auxiliary adjustment section 14 is connected to (the second long side 132 of) the frequency adjustment section 13; that is, the bandwidth adjustment section 12 and the auxiliary adjustment section 14 are connected to opposite sides of the frequency adjustment section 13. One end of the auxiliary adjustment section 14 faces the second end 112 along the first direction D1, and one end of the auxiliary adjustment section 14 is aligned with one end of the frequency adjustment section 13, thereby forming a gap G3 connected to the gap G1 between the auxiliary adjustment section 14 and the second end 112.

[0087] In more detail, the auxiliary adjustment section 14 has a third layout length L3 along the first direction D1 and a width W3 along the second direction D2. The third layout length L3 is smaller than the first layout length L1, and the width W3 of the auxiliary adjustment section 14 is smaller than the configuration distance G2; that is, the auxiliary adjustment section 14 is spaced from another part of the surrounding portion 113 (e.g., Fig.13 The lower right part of the surrounding portion 113 in FIG.

[0088] Furthermore, if Fig.14 As shown, its curve C is Fig.13 The simulation test results of the antenna structure 1 are shown, and curve B1 is the simulation test result of the antenna structure 1 of the embodiment 1. Figure 3 The simulation test results of the antenna structure 1 are shown; it can be clearly seen that the antenna structure 1 in this embodiment is provided with an auxiliary adjustment section 14 with specific conditions at a specific position, so that the antenna structure 1 can further expand its bandwidth on the basis of the first embodiment.

[0089] In addition, the frequency adjustment section 13 is Figure 3 and Fig.13 Although the configuration is described along the reference axis L, the present invention is not limited thereto. Fig.15 As shown, at least 90% of the bandwidth adjustment section 12 is located on one side of the reference axis L, and the frequency adjustment section 13 is located on the other side of the reference axis L; alternatively, in other embodiments not shown in the present invention, the bandwidth adjustment section 12 and the frequency adjustment section 13 may also be located on the same side of the reference axis L according to design requirements, thereby providing a more diverse range of usage requirements.

[0090] [Technical Effects of Embodiments of the Invention]

[0091] In summary, the antenna system, antenna device, and antenna structure disclosed in the embodiments of the present invention generate a stereoscopic sensing space of a preset range by cooperating with the antenna structure and the communication element, so as to accurately obtain the signal of at least one sensor located within the stereoscopic sensing space and effectively avoid external interference.

[0092] Furthermore, the antenna structure disclosed in the embodiment of the present invention is provided with a bandwidth adjustment segment and a frequency adjustment segment with specific conditions (such as: the second layout length is greater than the first layout length) at a specific position of the layout area of ​​the ring segment, so that the antenna structure can have a larger bandwidth (such as: approximately increased to twice) below the preset center frequency.

[0093] In addition, the antenna structure disclosed in the embodiment of the present invention can further expand its bandwidth by providing an auxiliary adjustment section with specific conditions at a specific position.

[0094] The contents disclosed above are only preferred feasible embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention description and drawings are included in the patent scope of the present invention.

Claims

1. An antenna device, comprising: An antenna structure, the antenna structure comprising: An annular segment, the annular segment having a first end, a second end spaced from the first end, and a surrounding portion connected to the first end and the second end; wherein a gap is formed between the first end and the second end, and the first end, the second end, and the surrounding portion together surround a layout area connected to the gap; a bandwidth adjustment segment, the bandwidth adjustment segment is located within the layout area, and the bandwidth adjustment segment is connected to the first end portion and a portion of the surrounding portion adjacent thereto; wherein the bandwidth adjustment segment has a first layout length along a first direction; and a frequency adjustment segment, the frequency adjustment segment is located within the layout area, and the frequency adjustment segment is connected to the bandwidth adjustment segment; wherein the frequency adjustment segment has a second layout length along the first direction that is greater than the first layout length; and a communication element electrically coupled to the first end and the second end of the ring segment of the antenna structure; The antenna structure can construct a three-dimensional sensing space through the communication element to obtain a signal from at least one sensor located in the three-dimensional sensing space.

2. The antenna device according to claim 1, wherein: The antenna structure includes an auxiliary adjustment segment located within the layout area, and the auxiliary adjustment segment is connected to the frequency adjustment segment and has a third layout length along the first direction that is smaller than the first layout length.

3. The antenna device according to claim 2, wherein: The frequency adjustment section is a long strip structure parallel to the first direction; the bandwidth adjustment section and the auxiliary adjustment section are connected to opposite sides of the frequency adjustment section.

4. The antenna device according to claim 2, wherein: The frequency adjustment section is spaced from another part of the surrounding portion adjacent to the second end at a configuration distance along a second direction perpendicular to the first direction, the auxiliary adjustment section has a width smaller than the configuration distance in the second direction, and the auxiliary adjustment section is spaced from the other part of the surrounding portion along the second direction.

5. The antenna device according to claim 4, wherein: The auxiliary adjustment section and the second end face each other along the first direction, and a gap communicating with the notch is formed between the auxiliary adjustment section and the second end.

6. The antenna device according to claim 1, wherein: The annular segment defines a reference axis parallel to the first direction and passing through the gap, and at least 90% of the bandwidth adjustment segment is located on one side of the reference axis.

7. The antenna device according to claim 6, wherein: The frequency adjustment segment is located on the other side of the reference axis, and the annular segment is mirror-symmetrical to the reference axis.

8. The antenna device according to claim 6, wherein: The frequency adjustment segment is arranged along the reference axis, and the annular segment is mirror-symmetrical to the reference axis.

9. The antenna device according to claim 1, wherein: The annular segment has a circumference, and the first layout length is no greater than 12.5% ​​of the circumference, and the second layout length is no greater than 25% of the circumference.

10. The antenna device according to claim 9, wherein: The antenna structure is suitable for a center frequency, and the circumference of the annular segment is 70% to 100% of a wavelength corresponding to the center frequency.

11. The antenna device according to claim 9, wherein: The first end portion and the second end portion are spaced apart from each other by a distance not greater than 1% of the circumference.

12. The antenna device according to claim 1, wherein: The bandwidth adjustment section and the frequency adjustment section occupy 20% to 55% of the layout area.

13. The antenna device according to claim 1, wherein: The communication element is further defined as a radio frequency identification reader or a global mobile communication receiver.

14. The antenna device according to claim 13, wherein: The operation of the communication element can be adjusted between a first transmission power and a second transmission power greater than the first transmission power to change the range of the three-dimensional sensing space.

15. An antenna structure, comprising: An annular segment, the annular segment having a first end, a second end spaced from the first end, and a surrounding portion connected to the first end and the second end; wherein a gap is formed between the first end and the second end, and the first end, the second end, and the surrounding portion together surround a layout area connected to the gap; a bandwidth adjustment segment, the bandwidth adjustment segment is located within the layout area, and the bandwidth adjustment segment is connected to the first end portion and a portion of the surrounding portion adjacent thereto; wherein the bandwidth adjustment segment has a first layout length along a first direction; and a frequency adjustment segment, the frequency adjustment segment is located within the layout area, and the frequency adjustment segment is connected to the bandwidth adjustment segment; wherein the frequency adjustment segment has a second layout length along the first direction that is greater than the first layout length; The antenna structure can be used to construct a three-dimensional sensing space through a communication element to obtain a signal from at least one sensor located in the three-dimensional sensing space.

16. The antenna structure according to claim 15, wherein: The antenna structure includes an auxiliary adjustment segment located within the layout area, and the auxiliary adjustment segment is connected to the frequency adjustment segment and has a third layout length along the first direction that is less than the first layout length; wherein the annular segment has a circumference, and the first layout length is not greater than 12.5% ​​of the circumference, and the second layout length is not greater than 25% of the circumference.

17. The antenna structure according to claim 16, wherein: The annular segment defines a reference axis parallel to the first direction and passing through the gap, and at least 90% of the bandwidth adjustment segment is located on one side of the reference axis, and the annular segment is mirror-symmetrical to the reference axis.

18. The antenna structure according to claim 15, wherein: The distance between the first end and the second end is no more than 1% of the circumference; wherein the auxiliary adjustment section and the second end face each other along the first direction, and a gap connected to the notch is formed between the auxiliary adjustment section and the second end.

19. An antenna system, comprising: An antenna device, the antenna device comprising: An antenna structure, the antenna structure comprising: An annular segment, the annular segment having a first end, a second end spaced from the first end, and a surrounding portion connected to the first end and the second end; wherein a gap is formed between the first end and the second end, and the first end, the second end, and the surrounding portion together surround a layout area connected to the gap; a bandwidth adjustment segment, the bandwidth adjustment segment is located within the layout area, and the bandwidth adjustment segment is connected to the first end portion and a portion of the surrounding portion adjacent thereto; wherein the bandwidth adjustment segment has a first layout length along a first direction; and a frequency adjustment segment, the frequency adjustment segment is located within the layout area, and the frequency adjustment segment is connected to the bandwidth adjustment segment; wherein the frequency adjustment segment has a second layout length along the first direction that is greater than the first layout length; and a communication element electrically coupled to the first end and the second end of the ring segment of the antenna structure; wherein the antenna structure can construct a three-dimensional sensing space through the communication element; and A plurality of sensors are used to be respectively arranged in a plurality of chambers which are independent of each other and located in the three-dimensional sensing space, so that the antenna device can obtain signals from the plurality of sensors.

20. The antenna system of claim 19, wherein: The antenna device cannot obtain a signal from any external sensor outside the three-dimensional sensing space.

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