Antenna device

Abstract

The utility model provides an antenna device which comprises a first antenna unit and a second antenna unit. The first antenna unit is used for generating a first radiation pattern with a first co-polarization direction, and comprises a first structure layer arranged on a first plane and a second structure layer arranged on a second plane. The first structure layer comprises a plurality of first antenna structures, a main feed-in point, a first secondary feed-in point and a transmission line. The transmission line comprises a first transmission line section and a second transmission line section, and the main feed-in point is located between the first transmission line section and the second transmission line section. The second structural layer includes a conductor. At least partial projections of the plurality of first antenna structures on the second plane surround the outer side of the conductor. The second antenna unit is arranged on the first plane and used for generating a second radiation field pattern with a second co-polarization direction, an included angle is formed between the second co-polarization direction and the first co-polarization direction, and the projection of the second antenna unit on the second plane is located in the conductor. The design enables the antenna device to have a good field pattern.

Description

Technical Field

[0001] The utility model relates to an antenna device, and particularly to an antenna device with a good field pattern. Background Art

[0002] In known antenna architectures, to generate an omnidirectional radiation field pattern, the antenna is designed as a three-dimensional antenna architecture perpendicular to the plane with stronger energy in the radiation field pattern. That is, the plane where the antenna is located is substantially parallel to the axis with the minimum radiation energy in the radiation field pattern, and there are more spatial requirements. If a high-order mode patch antenna is used, a larger area is required. Summary of the Utility Model

[0003] The utility model provides an antenna device with a good field pattern.

[0004] An antenna device of the utility model includes a first antenna unit and a second antenna unit. The first antenna unit is used to generate a first radiation field pattern, and the first radiation field pattern has a first co-polarization direction. The first antenna unit includes a first structural layer and a second structural layer. The first structural layer is disposed on a first plane, and the first structural layer includes a plurality of first antenna structures, a main feeding point, a first secondary feeding point, and a transmission line. The plurality of first antenna structures are separated from each other. The transmission line includes a first transmission line segment and a second transmission line segment. The main feeding point is located between the first transmission line segment and the second transmission line segment, and the first transmission line segment is connected to a part of the plurality of first antenna structures, and the second transmission line segment is connected to another part of the plurality of first antenna structures. The main feeding point to a part of the first antenna structures forms a first transmission path, and a plurality of first transmission paths pass through the first secondary feeding point. The main feeding point to another part of the first antenna structures forms a plurality of second transmission paths. The second structural layer is disposed on a second plane, the second plane is parallel to or coincides with the first plane, and the second structural layer includes a conductor. At least a part of the plurality of first antenna structures is projected around the outside of the conductor on the second plane. The second antenna unit is disposed on the first plane and is used to generate a second radiation field pattern. The second radiation field pattern has a second co-polarization direction, and there is an included angle between the second co-polarization direction and the first co-polarization direction. Moreover, the projection of the second antenna unit on the second plane is located inside the conductor.

[0005] An antenna device of the present utility model includes a first antenna unit and a second antenna unit. The first antenna unit is used to generate a first radiation pattern, and the first radiation pattern has a first co-polarization direction. The first antenna unit includes a first structural layer and a second structural layer. The first structural layer is disposed on a first plane, and the first structural layer includes two first antenna structures, a transmission line, a main feeding point, and two branch feeding points. The two first antenna structures are separated from each other, and each of the two first antenna structures has a first transmission portion, a first turning portion, and a first radiation portion. The first turning portion is formed between the first transmission portion and the first radiation portion, and the turning directions of the two first antenna structures are opposite to each other. The transmission line is connected to the first transmission portion of each of the two first antenna structures. The main feeding point is located on the transmission line. Each of the two branch feeding points is located at the first turning portion of the corresponding first antenna structure, and the phase difference between the two signals respectively fed into the two branch feeding points is between 150 degrees and 210 degrees. The second structural layer is disposed on a second plane, and the second plane is parallel to or coincides with the first plane. The second structural layer includes two second antenna structures and a conductor. The positions of the two second antenna structures respectively correspond to the positions of the two first antenna structures. Each of the two second antenna structures has a second transmission portion, a second turning portion, and a second radiation portion. The second turning portion is formed between the second transmission portion and the second radiation portion, and the turning directions of the two second antenna structures are opposite to each other. The turning direction of each of the two second antenna structures is opposite to the turning direction of the corresponding first antenna structure. The conductor is connected to the second transmission portion of each of the two second antenna structures. The second antenna unit is disposed on the first plane and is used to generate a second radiation pattern. The second radiation pattern has a second co-polarization direction, and there is an included angle between the second co-polarization direction and the first co-polarization direction. Moreover, the projection of the second antenna unit on the second plane is located within the conductor.

[0006] An antenna device of the present utility model includes a first antenna unit. The first antenna unit is used to generate a first radiation pattern, and the first radiation pattern has a first co-polarization direction. The first antenna unit includes a first structural layer and a second structural layer. The first structural layer is disposed on a first plane, and the first structural layer includes a main feeding point, a first feeding point, and a transmission line. The transmission line includes a first transmission line segment and a second transmission line segment, and the main feeding point is located between the first transmission line segment and the second transmission line segment. The second structural layer is disposed on a second plane, and the second plane is parallel to or coincides with the first plane. The second structural layer includes a plurality of antenna structures and a conductor. The plurality of antenna structures are separated from each other. The plurality of antenna structures are connected to the outside of the conductor, and a plurality of openings are formed in the conductor and respectively extend to the plurality of antenna structures, and the transmission line straddles the plurality of openings. The first transmission line segment is connected to a part of the plurality of antenna structures, the second transmission line segment is connected to another part of the plurality of antenna structures, and a plurality of first transmission paths are formed from the main feeding point to a part of the antenna structures. The plurality of first transmission paths pass through the first feeding point, and a plurality of second transmission paths are formed from the main feeding point to another part of the antenna structures.

[0007] Based on the above, the antenna device according to an embodiment of the present invention can provide an omnidirectional radiation pattern with dual polarization, and the above configuration enables the first transmission path to extend from the main feeding point and first pass through the first feeding point, and then be connected to different first antenna structures from the first feeding point, thus being divided into multiple segments. Such a configuration is beneficial for impedance conversion, and it is easier to adjust the line position according to the impedance requirements, and more space can be reserved for the configuration of other electronic components to avoid interference between the electronic components and the transmission line or to avoid the electronic components affecting the transmission signal. The antenna device according to another embodiment of the present invention can still provide an omnidirectional radiation pattern when the phase difference of the fed signal is between 150 degrees and 210 degrees, can provide a more flexible circuit configuration, and the architecture of the antenna device is relatively simple, and the occupied space can also be smaller. The antenna device according to another embodiment of the present invention can provide an omnidirectional radiation pattern, and the occupied space of the antenna device can be smaller. In addition, the above configuration enables the first transmission path to extend from the main feeding point and first pass through the first feeding point, and then be connected to different first antenna structures from the first feeding point, thus being divided into multiple segments. Such a configuration is beneficial for impedance conversion, and it is easier to adjust the line position according to the impedance requirements, and more space can be reserved for the configuration of other electronic components to avoid interference between the electronic components and the transmission line or to avoid the electronic components affecting the transmission signal.

[0008] To make the above features and advantages of the present invention more obvious and understandable, specific embodiments are hereinafter given and described in detail in conjunction with the accompanying drawings as follows. Description of the Drawings

[0009] Figure 1 is a schematic diagram of an antenna device according to an embodiment of the present invention;

[0010] Figure 2 is Figure 1 a top view schematic diagram of the first antenna unit of the antenna device;

[0011] Figure 3A is a simplified circuit configuration diagram of the conductor of the antenna device with Figure 1 hidden;

[0012] Figure 3B is Figure 1 a radiation pattern diagram of the first antenna unit of the antenna device;

[0013] Figure 3C is Figure 1 a radiation pattern diagram of the second antenna unit of the antenna device;

[0014] Figure 4 is a top view schematic diagram of an antenna device according to another embodiment of the present invention;

[0015] Figure 5 and Figure 6 is a schematic diagram of different perspectives of an antenna device according to another embodiment of the present utility model;

[0016] Figure 7 is to hide Figure 5 A simplified circuit configuration diagram of the conductor of the antenna device;

[0017] Figure 8 is Figure 5 The radiation pattern diagram of the first antenna unit of the antenna device;

[0018] Figure 9A and Figure 9B is a schematic diagram of different perspectives of an antenna device according to another embodiment of the present utility model;

[0019] Figure 10 is Figure 9A The radiation pattern diagram of the first antenna unit of the antenna device;

[0020] Figure 11 is a schematic diagram of an antenna device according to another embodiment of the present utility model;

[0021] Figure 12 and Figure 13 is a top view schematic diagram of multiple antenna devices according to other embodiments of the present utility model;

[0022] Figure 14 is a schematic diagram of an antenna device according to another embodiment of the present utility model;

[0023] Figure 15 is Figure 14 The top view schematic diagram of the first antenna unit of the antenna device;

[0024] Figure 16 is Figure 14 The radiation pattern diagram of the first antenna unit of the antenna device;

[0025] Figure 17 and Figure 18 is a schematic diagram of different perspectives of an antenna device according to another embodiment of the present utility model;

[0026] Figure 19 and Figure 20 is a schematic diagram of different perspectives of an antenna device according to another embodiment of the present utility model;

[0027] Figure 21 and Figure 22 is a schematic diagram of different perspectives of an antenna device according to another embodiment of the present utility model;

[0028] Figure 23ASchematic diagram of an antenna device according to another embodiment of the present utility model;

[0029] Figure 23B is Figure 23A Top view schematic diagram of the first antenna unit of the antenna device;

[0030] Figure 24A and Figure 24B Schematic diagrams of different perspectives of an antenna device according to another embodiment of the present utility model;

[0031] Figure 25A and Figure 25B Schematic diagrams of different perspectives of an antenna device according to another embodiment of the present utility model;

[0032] Figures 26A to 26C Schematic diagrams of different perspectives of an antenna device according to another embodiment of the present utility model;

[0033] Figure 27A is Figure 26A Radiation pattern diagram of the first antenna unit of the antenna device;

[0034] Figure 27B is Figure 26A Radiation pattern diagram of the second antenna unit of the antenna device;

[0035] Figure 28A Schematic diagram of an antenna device according to another embodiment of the present utility model;

[0036] Figure 28B is Figure 28A Top view schematic diagram of the first antenna unit of the antenna device;

[0037] Figure 29A and Figure 29B Schematic diagrams of different perspectives of an antenna device according to another embodiment of the present utility model;

[0038] Figure 30A and Figure 30B Schematic diagrams of different perspectives of an antenna device according to another embodiment of the present utility model;

[0039] Figure 31A and Figure 31B Schematic diagrams of different perspectives of an antenna device according to another embodiment of the present utility model;

[0040] Figure 32A Schematic diagram of an antenna device according to another embodiment of the present utility model;

[0041] Figure 32B is Figure 32ATop view schematic diagram of the first antenna unit of the antenna device;

[0042] Figure 33A and Figure 33B is a schematic diagram of different perspectives of an antenna device according to another embodiment of the present utility model;

[0043] Figure 34A and Figure 34B is a schematic diagram of different perspectives of an antenna device according to another embodiment of the present utility model;

[0044] Figure 35A and Figure 35B is a schematic diagram of different perspectives of an antenna device according to another embodiment of the present utility model;

[0045] Figure 36A and Figure 36B is a schematic diagram of different perspectives of an antenna device according to another embodiment of the present utility model.

[0046] Description of reference numerals

[0047] A: Axis;

[0048] D1: First co-polarization direction

[0049] D2: Second co-polarization direction

[0050] F1: First transmission path;

[0051] F2: Second transmission path;

[0052] H: Distance;

[0053] L1, L1’: First sub-segment;

[0054] L2: Third sub-segment;

[0055] L3: Fifth sub-segment;

[0056] L4: First branch segment;

[0057] L5: Second branch segment;

[0058] N: Normal;

[0059] P1: First feeding point;

[0060] P2: Second feeding point;

[0061] P3: First junction point;

[0062] P4: Third junction point;

[0063] P5: Second junction point;

[0064] P6: The fourth intersection point;

[0065] R1, R1’: The second sub-segment;

[0066] R2: The fourth sub-segment;

[0067] R3: The sixth sub-segment;

[0068] Q1, Q2: The feeding points;

[0069] X, Y, Z: The axial directions;

[0070] Z1: The first plane;

[0071] Z2: The second plane;

[0072] θ: The included angle;

[0073] 10, 10’, 10a, 10b, 10b’, 10c, 10d, 10e, 10f, 10g, 10h, 10i, 10j, 10k, 10l, 10m, 10n, 10o, 10p, 10q, 10r, 10s, 10t, 10u: Antenna devices;

[0074] 11, 11’, 11a, 11b, 11c, 11d, 11e, 11f, 11g, 11h, 11i, 11j, 11k, 11l, 11m, 11n, 11o, 11p, 11q, 11r, 11s, 11t, 11u: The first antenna unit

[0075] 12, 12b, 12b’: The second antenna unit

[0076] 20: The via hole;

[0077] 30: The reflector;

[0078] 100, 100m: The first structural layer;

[0079] 110: The first antenna structure;

[0080] 112: The first transmission part;

[0081] 114: The first turning part;

[0082] 116, 116a, 116a’, 116b, 116b’: The first radiation part;

[0083] 118: The first slot;

[0084] 120: The main feeding point;

[0085] 122: The branch feeding point;

[0086] 130: Transmission line;

[0087] 132, 132a: First transmission line segment;

[0088] 134, 134a: Second transmission line segment;

[0089] 200, 200m: Second structural layer;

[0090] 210: Conductor;

[0091] 212: First vertex;

[0092] 214: Second vertex;

[0093] 216: Opening;

[0094] 220: Second antenna structure;

[0095] 222: Second transmission part;

[0096] 224: Second turning part;

[0097] 226, 226a, 226a’, 226b, 226b’: Second radiation part;

[0098] 228: Second slot;

[0099] 230: Antenna structure;

[0100] 30: Reflector. Detailed implementation manner

[0101] Figure 1 is a schematic diagram of an antenna device according to an embodiment of the present invention. Figure 2 is Figure 1 a top view schematic diagram of the first antenna unit of the antenna device. For schematic diagrams of different perspectives of an antenna device according to an embodiment of the present invention, please refer to Figures 1 to 2 , the antenna device 10 of this embodiment includes a first antenna unit 11 and a second antenna unit 12.

[0102] The first antenna unit 11 is used to generate a first radiation pattern, and the first radiation pattern has a first co-polarization direction D1. The first antenna unit 11 includes a first structural layer 100 and a second structural layer 200. The first structural layer 100 is disposed on a first plane Z1 (for example, the upper layer of a dielectric substrate, but not limited thereto).

[0103] The second antenna unit 12 is disposed in the first plane Z1. In this embodiment, the second antenna unit 12 is, for example, a monopole antenna. The second antenna unit 12 is used to generate a second radiation pattern, and the second radiation pattern has a second co-polarization direction D2. There is an included angle θ between the second co-polarization direction D2 and the first co-polarization direction D1. In this embodiment, the second co-polarization direction D2 and the first co-polarization direction D1 are orthogonal to each other, that is to say, the angle of the included angle θ is 90 degrees, but it is not limited thereto. In this embodiment, the first co-polarization direction D1 is parallel to the axial direction X, the second co-polarization direction D2 is parallel to the axial direction Z, and the axial direction Y is perpendicular to the axial directions X and Z, but it is not limited thereto.

[0104] The first structural layer 100 includes a plurality of first antenna structures 110, a main feeding point 120, and a transmission line 130. The plurality of first antenna structures 110 are separated from each other. The main feeding point 120 is connected to these first antenna structures 110 through the transmission line 130. In this embodiment, the number of these first antenna structures 110 is, for example, four, but it is not limited thereto.

[0105] In this embodiment, the transmission line 130 includes a first transmission line segment 132 and a second transmission line segment 134. The main feeding point 120 is located between the first transmission line segment 132 and the second transmission line segment 134. The first transmission line segment 132 is connected to a part of these first antenna structures 110, and the second transmission line segment 134 is connected to another part of these first antenna structures 110.

[0106] Specifically, the first structural layer 100 further includes a first feeding point P1 and a second feeding point P2. The first feeding point P1 is located on the first transmission line segment 132, and the second feeding point P2 is located on the second transmission line segment 134. In this embodiment, the first transmission line segment 132 includes a first sub-segment L1, a third sub-segment L2, and a fifth sub-segment L3. The first sub-segment L1 is located between the first feeding point P1 and the main feeding point 120, and the first feeding point P1 is located between the first sub-segment L1, the third sub-segment L2, and the fifth sub-segment L3. The third sub-segment L2 and the fifth sub-segment L3 are respectively connected between the first feeding point P1 and the corresponding first antenna structures 110 (the upper left and lower left first antenna structures 110).

[0107] The second transmission line segment 134 includes a second sub-segment R1, a fourth sub-segment R2, and a sixth sub-segment R3. The second sub-segment R1 is located between the second feeding point P2 and the main feeding point 120. The second feeding point P2 is located between the second sub-segment R1, the fourth sub-segment R2, and the sixth sub-segment R3. The fourth sub-segment R2 and the sixth sub-segment R3 are respectively connected between the second feeding point P2 and the corresponding first antenna structures 110 (the upper-right and lower-right first antenna structures 110). In this embodiment, the first sub-segment L1 and the second sub-segment R1 are in a straight form. For example, the first sub-segment L1 is connected between the first feeding point P1 and the main feeding point 120 at the shortest distance, and the second sub-segment R1 is connected between the second feeding point P2 and the main feeding point 120 at the shortest distance, but it is not limited thereto.

[0108] In addition, in this embodiment, each of these first antenna structures 110 has a first transmission portion 112, a first turning portion 114, and a first radiation portion 116. The first turning portion 114 is formed between the first transmission portion 112 and the first radiation portion 116. The first transmission portions 112 of these first antenna structures 110 are connected to the transmission line 130 (for example, these first transmission portions 112 are respectively connected to the third sub-segment L2, the fifth sub-segment L3, the fourth sub-segment R2, and the sixth sub-segment R3). The first transmission portion 112 mainly provides the function of transmission, and the first radiation portion 116 mainly provides the function of antenna radiation.

[0109] In this embodiment, there are at least two bends between the first feeding point P1 and the first radiation portion 116. For example, there are two bends between the first feeding point P1 and the upper-left first radiation portion 116, such as the upper-left first turning portion 114 and the third junction point P4 to be described later. There are two bends between the first feeding point P1 and the lower-left first radiation portion 116, such as the lower-left first turning portion 114 and the first junction point P3 to be described later. Similarly, there are at least two bends between the second feeding point P2 and the first radiation portion 116. For example, there are two bends between the second feeding point P2 and the upper-right first radiation portion 116, such as the upper-right first turning portion 114 and the fourth junction point P6 to be described later. There are two bends between the second feeding point P2 and the lower-right first radiation portion 116, such as the lower-right first turning portion 114 and the second junction point P5, but it is not limited thereto.

[0110] In this embodiment, the width of the first radiation portion 116 of each of these first antenna structures 110 gradually widens, for example, from the corresponding first turning portion 114 to the end of the first radiation portion 116, so as to achieve better radiation efficiency. Of course, the shape of the first radiation portion 116 is not limited thereto.

[0111] As Figure 2 shown, in this embodiment, the main feeding point 120 to a part of the first antenna structure 110 (for example, the two first antenna structures 110 in the upper left and lower left) forms a plurality of first transmission paths F1 (for example, two). As can be seen from Figure 2 , these first transmission paths F1 pass through the first feeding point P1. In some embodiments, these first transmission paths F1 share at least part of the path, that is, the section of the first sub-segment L1. Similarly, the main feeding point 120 to another part of the first antenna structure 110 (for example, the two first antenna structures 110 in the upper right and lower right) forms a plurality of second transmission paths F2 (for example, two). As can be seen from Figure 2 , these second transmission paths F2 pass through the second feeding point P2. In some embodiments, these second transmission paths F2 share at least part of the path, that is, the section of the second sub-segment R1. In other embodiments, the first sub-segment L1 can also form a slit so that the first sub-segment L1 contains two first transmission paths F1, but still converges to the first feeding point P1 (similar embodiments can be referred to Figure 24A and Figure 24B ); the second sub-segment R1 can also form a slit so that the second sub-segment R1 contains two second transmission paths F2, but still converges to the second feeding point P2. In other embodiments, it can also include an asymmetric configuration where only these first transmission paths F1 all pass through the first feeding point P1 but these second transmission paths F2 do not all pass through the second feeding point P2, or it can include an asymmetric configuration where only these second transmission paths F2 all pass through the second feeding point P2 but these first transmission paths F1 do not all pass through the first feeding point P1 (similar embodiments can be referred to Figure 23A and Figure 23B ).

[0112] It should be noted that in this embodiment, taking the example of first dividing into two paths from the main feeding point 120 to the first transmission line segment 132 and the second transmission line segment 134. In other embodiments, the transmission line 130 can include more transmission line segments (for example, more than 3), and more routes can be divided from the main feeding point 120. The transmission line segments of each route can first extend to the corresponding secondary feeding point, and then each secondary feeding point is connected to the corresponding plurality of first antenna structures 110. In this case, at least the secondary feeding points can be shared, and part of the path first divided from the main feeding point 120 can also be shared.

[0113] Please return to Figure 1, in this embodiment, the second structural layer 200 is disposed on the second plane Z2 (such as the lower layer of the dielectric substrate, but not limited thereto). In this embodiment, the second plane Z2 is parallel to the first plane Z1, but in other embodiments, the second plane Z2 may also coincide with the first plane Z1, that is to say, the first plane Z1 may also be coplanar with the second plane Z2.

[0114] The second structural layer 200 includes a conductor 210. At least a portion of the projections of these first antenna structures 110 on the second plane Z2 surround the outside of the conductor 210, and the projection of the second antenna unit 12 on the second plane Z2 is located within the conductor 210. Figure 2 It can be seen that in this embodiment, the projections of these first antenna structures 110 on the second plane Z2 are located outside the conductor 210, but in other embodiments, the projections of each of the first antenna structures 110 on the second plane Z2 may also be partially located outside the conductor 210 and partially located within the conductor 210. In this embodiment, the conductor 210 can be coupled to a reference potential or grounded.

[0115] In this embodiment, the projection of the first feeding point P1 on the second plane Z2 is located on the first side (such as the left side) of the conductor 210, and the projection of the second feeding point P2 on the second plane Z2 is located on the second side (such as the right side) of the conductor 210. The first side and the second side are opposite to each other. Of course, the positions of the first feeding point P1 and the second feeding point P2 are not limited thereto.

[0116] In this embodiment, the second structural layer 200 may alternatively include a plurality of second antenna structures 220, and the positions of these second antenna structures 220 respectively correspond to the positions of these first antenna structures 110. Figure 1 As shown, each of these second antenna structures 220 has a second transmission portion 222, a second turning portion 224, and a second radiation portion 226. The second turning portion 224 is formed between the second transmission portion 222 and the second radiation portion 226, and the second transmission portions 222 of these second antenna structures 220 are connected to the conductor 210.

[0117] In this embodiment, the conductor 210 is a polygon, such as a quadrilateral, and these second antenna structures 220 are connected to the vertices of the conductor 210. The projection of the main feeding point 120 on the second plane Z2 is located at the center of the conductor 210. Of course, in other embodiments, the conductor 210 may also be other polygons, circles, ellipses or irregular shapes including curves, and the second antenna structures 220 may also be connected to the sides of the conductor 210. The shape of the conductor 210, the position where the second antenna structures 220 are connected to the conductor 210, and the position of the main feeding point 120 are not limited thereto.

[0118] In this embodiment, the width of the second radiating portion 226 of each of these second antenna structures 220 gradually widens from the corresponding second turning portion 224 to the end of the second radiating portion 226, so as to achieve better radiation efficiency. Of course, the shape of the second radiating portion 226 is not limited thereto.

[0119] In this embodiment, these first radiating portions 116 and these second radiating portions 226 are dipole antennas. The turning direction (e.g., clockwise) of each of these first antenna structures 110 is opposite to the turning direction (e.g., counterclockwise) of the corresponding second antenna structure 220. In this embodiment, the included angle between the first radiating portion 116 and the corresponding second radiating portion 226 is, for example, 90 degrees.

[0120] In this embodiment, the projection of the first transmission portion 112 of each of these first antenna structures 110 on the second plane Z2 at least partially overlaps or is parallel to the second transmission portion 222 of the corresponding second antenna structure 220, so as to Figure 1 and Figure 2 take an example, the projection of the first transmission portion 112 on the second plane Z2 is, for example, coincident with the corresponding second transmission portion 222. The projection of the first radiating portion 116 of each of these first antenna structures 110 on the second plane Z2 and the second radiating portion 226 of the corresponding second antenna structure 220 are mirror-symmetric with the second transmission portion 222 as the axis of symmetry. In other embodiments, the first radiating portion 116 and the second radiating portion 226 may also be asymmetric dipole antennas, or dipole antennas fed in other forms. For example, the first radiating portion 116 and the corresponding second radiating portion 226 are not necessarily of equal length, or the included angle between the first radiating portion 116 and the corresponding first transmission portion 112 is not necessarily equal to the included angle between the corresponding second radiating portion 226 and the corresponding second transmission portion 222.

[0121] Of course, the types of the first radiating portion 116 and the second radiating portion 226 are not limited thereto. In other embodiments, the first radiating portion 116 and the second radiating portion 226 may also be planar inverted-F antennas (PIFA), loop antennas or monopole antennas.

[0122] As Figure 2 shown, the turning directions of these first antenna structures 110 are the same (both clockwise or both counterclockwise). These first antenna structures 110 are, for example, formed by a conductor 210 in the first plane Z1 ( Figure 2) The centers of the projections are arranged in a rotationally symmetric manner with the symmetric points, and the turning directions of these second antenna structures 220 are the same (both counterclockwise or both clockwise). These second antenna structures 220 are, for example, arranged in a rotationally symmetric manner with the center of the conductor 210 as the symmetric point. These first antenna structures 110 and these second antenna structures 220 are, for example, arranged radially with the center of the conductor 210, that is, evenly located around the conductor 210.

[0123] Therefore, taking Figure 2 as an example, when the antenna device 10 operates, during a certain period of time, in these first radiation portions 116 of these first antenna structures 110 and these second radiation portions 226 of these second antenna structures 220, a counterclockwise radiation current is formed (here referring to a group of currents, such as Figure 2 the arrows marked on the periphery of the antenna device 10). During another period of time when the antenna device 10 operates, in these first radiation portions 116 of these first antenna structures 110 and these second radiation portions 226 of these second antenna structures 220, a clockwise radiation current can also be formed, so that the first antenna unit 11 of the antenna device 10 forms an omnidirectional first radiation pattern. Further, since antenna resonance is periodic, at different time points within the period, the above-mentioned radiation current flows in an alternating manner between the two states of both counterclockwise and both clockwise.

[0124] It should be noted that although at the beginning and end of the antenna resonance period, the radiation currents formed by the first radiation portion 116 and the second radiation portion 226 may not be completely in the same direction, during most of the resonance period, the radiation currents formed by the first radiation portion 116 and the second radiation portion 226 will flow in the same clockwise direction as described above.

[0125] Figure 3A is a simplified circuit configuration diagram of the conductor of the hidden Figure 1 antenna device. Please refer to Figure 3A , in this embodiment, the lengths of the first sub-segment L1 and the second sub-segment R1 are equal, so that the phase difference between the first feeding point P1 and the second feeding point P2 is 0. In other embodiments, the length difference between the first sub-segment L1 and the second sub-segment R1 can satisfy that the phase difference between the first feeding point P1 and the second feeding point P2 is plus or minus n * 360 degrees, which also means that the phase difference is 0, that is, the first feeding point P1 and the second feeding point P2 are in the same phase to form an inphase feeding.

[0126] In addition, in this embodiment, these four first antenna structures 110 include four first transmission portions 112. The left-lower first transmission portion 112 is connected to the third sub-segment L2 at the first junction point P3, the right-lower first transmission portion 112 is connected to the fourth sub-segment R2 at the second junction point P5, the left-upper first transmission portion 112 is connected to the fifth sub-segment L3 at the third junction point P4, and the right-upper first transmission portion 112 is connected to the sixth sub-segment R3 at the fourth junction point P6.

[0127] In this embodiment, the phase difference between the signals fed into at the first junction point P3 and the second junction point P5 by the main feeding point 120 is within plus or minus 30 degrees, and the phase difference between the signals fed into at the third junction point P4 and the fourth junction point P6 by the main feeding point 120 is within plus or minus 30 degrees. In addition, the phase difference between the signals fed into at the first junction point P3 and the third junction point P4 by the main feeding point 120 is within plus or minus 30 degrees, and the phase difference between the signals fed into at the second junction point P5 and the fourth junction point P6 by the main feeding point 120 is within plus or minus 30 degrees. In addition, according to the microwave circuit theory, adding or subtracting n*360 degrees to each phase is the same as the original phase. Therefore, if the phase difference is 0 to 30 degrees plus or minus n*360 degrees, it also means the phase difference is 0 to 30 degrees, and if the phase difference is -30 to 0 degrees plus or minus n*360 degrees, it also means the phase difference is -30 to 0 degrees. The following descriptions about the phase difference can all be explained based on this.

[0128] For example, in this embodiment, the total length of the first sub-segment L1 and the third sub-segment L2 is the same as the total length of the second sub-segment R1 and the fourth sub-segment R2, and the total length of the first sub-segment L1 and the fifth sub-segment L3 is the same as the total length of the second sub-segment R1 and the sixth sub-segment R3. The length of the third sub-segment L2 is equal to the length of the fifth sub-segment L3, and the length of the fourth sub-segment R2 is equal to the length of the sixth sub-segment R3. It should be noted that the above lengths are not limited to this. Further, in the case of conforming to the above microwave circuit theory, increasing or decreasing the length of the sub-segments of the above transmission line can also form in-phase feeding.

[0129] Therefore, in this embodiment, the phase difference between the signals fed into at the first junction point P3 and the second junction point P5 by the main feeding point 120 is 0, and the phase difference between the signals fed into at the third junction point P4 and the fourth junction point P6 by the main feeding point 120 is 0. The phase difference between the signals fed into at the first junction point P3 and the third junction point P4 by the main feeding point 120 is 0, and the phase difference between the signals fed into at the second junction point P5 and the fourth junction point P6 by the main feeding point 120 is 0. It should be noted that as mentioned above, in other embodiments, if the phase difference is plus or minus n*360 degrees, it also means the phase difference is 0 and can form in-phase feeding.

[0130] In addition, in the present embodiment, the first structural layer 100 further includes a plurality of branch feeding points 122, and each of these branch feeding points 122 is located at the first turning portion 114 of the corresponding first antenna structure 110. The phase difference of the plurality of signals respectively fed by these branch feeding points 122 is within plus or minus 30 degrees (for example, the phase difference is 0). Therefore, the four first radiating portions 116 are fed in phase, so that the radiating currents surrounding the outside of the antenna device 10 flow in the same direction (counterclockwise or clockwise) at the same time.

[0131] It should be noted that, in other embodiments, the lengths of the first sub-segment L1, the third sub-segment L2, the fifth sub-segment L3, the second sub-segment R1, the fourth sub-segment R2, or the sixth sub-segment R3 may also be 0, that is, one or several of them are omitted. As long as the lengths of the remaining line segments are adjusted, in-phase feeding can still be achieved, and it is not limited by the drawings.

[0132] It is worth mentioning that the first transmission path F1 of the antenna device 10 in the present embodiment will first pass through the first feeding point P1 after extending from the main feeding point 120, and then be connected to different first antenna structures 110 from the first feeding point P1, and is divided into multiple segments. Such a configuration is beneficial to impedance conversion, and it is easier to adjust the line position according to the impedance requirements, and more positions can be vacated for the configuration of other electronic components to avoid interference between the electronic components and the transmission line or to avoid the electronic components affecting the transmission signal.

[0133] Figure 3B Yes Figure 1 The radiation pattern of the first antenna unit of the antenna device. Figure 3C Yes Figure 1 The radiation pattern of the second antenna unit of the antenna device. Please refer to Figure 3B , Figure 3B For Figure 1 The first radiation pattern generated by the first antenna unit 11 of the antenna device 10. Figure 3B shows the cross-section of the first radiation pattern in the XZ plane and the cross-section of the first radiation pattern in the YZ plane, and shows that the first radiation pattern is an omnidirectional pattern. In addition, referring jointly to Figure 1 , Figure 2 and Figure 3B , in Figure 3B of the first radiation pattern, the included angle between the axis A (along 0-180 degrees) with the minimum radiation energy in the first radiation pattern and the normal line N of the first plane Z1 is greater than or equal to 0 degrees and less than or equal to 20 degrees. Further, corresponding to Figure 1 and Figure 2 in the coordinate axes, Figure 3B the extension direction of the axis A is Figure 1 and Figure 2 in the Z-axis direction in Figure 3BIn an embodiment, the angle between axis A and the normal N of the first plane Z1 is substantially 0 degrees, that is, axis A is substantially perpendicular to the first plane Z1. In other embodiments, the omnidirectional first radiation pattern may not be completely symmetric. In this case, the angle between the axis A with the minimum radiation energy and the normal N of the first plane Z1 may be greater than 0 degrees but less than or equal to 20 degrees. Please also refer to Figure 3C , Figure 3C is Figure 1 the second radiation pattern generated by the second antenna unit 12 of the antenna device 10 of Figure 3C which shows the cross-section of the second radiation pattern in the XZ plane and the cross-section of the second radiation pattern in the YZ plane, and shows that the second radiation pattern is an omnidirectional pattern. In addition, please refer jointly to Figure 1 , Figure 2 and Figure 3C . In Figure 3C the second radiation pattern, the angle between the axis A (along 0 - 180 degrees) with the minimum radiation energy in the second radiation pattern and the normal N of the first plane Z1 is greater than or equal to 0 degrees and less than or equal to 20 degrees. Further, corresponding to Figure 1 and Figure 2 the coordinate axes in Figure 3C the extending direction of axis A of Figure 1 and Figure 2 is the Z-axis direction in Figure 3C . For example, in an embodiment of Figure 3C , the angle between axis A and the normal N of the first plane Z1 is substantially 0 degrees, that is, axis A is substantially perpendicular to the first plane Z1. In other embodiments, the omnidirectional second radiation pattern may not be completely symmetric. In this case, the angle between the axis A with the minimum radiation energy and the normal N of the first plane Z1 may be greater than 0 degrees but less than or equal to 20 degrees. In this way, the antenna device 10 can provide an omnidirectional pattern.

[0134] The following introduces antenna devices in other embodiments. Components that are the same as or similar to those of the antenna device in Figure 1 are denoted by the same or similar symbols, and will not be elaborated further. Only the main differences will be described.

[0135] Figure 4 is a top view schematic diagram of an antenna device according to another embodiment of the present utility model. Please refer to Figure 4 , Figure 4 the main difference between the antenna device 10' in Figure 2 and the antenna device 10 in Figure 2 is that in this embodiment, the main feeding point 120 of the first antenna unit 11' of the antenna device 10' is on the second plane Z2 ( Figure 1) The projection on [it] deviates from the center of the conductor 210. More specifically, the projection position of the main feeding point 120 in this embodiment is located at the edge of the conductor 210. Such a design can leave out the space above the conductor 210 to provide a relatively complete space for placing electronic components such as chips (not shown), so as to avoid the mutual interference between the electronic components and the transmission line or reduce the influence of the electronic components on the transmitted signal.

[0136] Since the projection position of the main feeding point 120 is located at the edge of the conductor 210, and the positions of the first feeding point P1 and the second feeding point P2 are still located at the centers of the left and right edges of the conductor 210, the first sub-segment L1’ and the second sub-segment R1’ are in a bent shape.

[0137] Similarly, in this embodiment, the lengths of the first sub-segment L1’ and the second sub-segment R1’ are equal, so that the phase difference between the first feeding point P1 and the second feeding point P2 is 0. In other embodiments, the length difference between the first sub-segment L1’ and the second sub-segment R1’ can satisfy that the phase difference between the first feeding point P1 and the second feeding point P2 is plus or minus n*360 degrees. In this way, Figure 4 the embodiment can still be in the case of in-phase feeding, similar to Figure 1 and Figure 2 the feeding situation, Figure 4 the turning directions of these first antenna structures 110 in the embodiment are the same (both clockwise or both counterclockwise), for example, they are arranged in rotational symmetry, and the turning directions of these second antenna structures 220 are the same (both counterclockwise or both clockwise), for example, they are arranged in rotational symmetry.

[0138] Figure 5 and Figure 6 are schematic diagrams of different perspectives of an antenna device according to another embodiment of the present invention. Please refer to Figure 5 and Figure 6 , Figure 5 the antenna device 10a in Figure 1 and Figure 1 the main difference between the antenna device 10 in

[0139] The projection of the first feeding point P1 on the second plane Z2 is, for example, located at the corner of the conductor 210, such as the first vertex 212 at the upper left corner. The projection of the second feeding point P2 on the second plane Z2 is, for example, located at the corner of the conductor 210, such as the second vertex 214 at the upper right corner. The first sub-segment L1 and the second sub-segment R1 are still in a straight form. In addition, in other embodiments, based on the antenna device 10a of Figure 5 , while maintaining the positions of the first feeding point P1 and the second feeding point P2, the main feeding point 120 is, for example, set such that its projection on the second plane Z2 is located at the center of the conductor 210, and the first sub-segment L1 and the second sub-segment R1 are set in a bent form. In this way, if combined with other electronic components, the form of the transmission line can be adjusted according to the configuration requirements.

[0140] The first transmission line segment 132a includes the first sub-segment L1 and the third sub-segment L2. The first sub-segment L1 is located between the first feeding point P1 and the main feeding point 120, and the first feeding point P1 is located between the first sub-segment L1, the third sub-segment L2, and the first antenna structure 110 at the upper left.

[0141] The second transmission line segment 134a includes the second sub-segment R1 and the fourth sub-segment R2. The second sub-segment R1 is located between the second feeding point P2 and the main feeding point 120, and the second feeding point P2 is located between the second sub-segment R1, the fourth sub-segment R2, and the first antenna structure 110 at the upper right.

[0142] That is to say, Figure 5 the antenna device 10a of Figure 1 does not have the fifth sub-segment L3 and the sixth sub-segment R3 in the antenna device 10 of

[0143] In this embodiment, the first transmission part 112 at the lower left is connected to the third sub-segment L2 at the first junction point P3, and the first transmission part 112 at the lower right is connected to the fourth sub-segment R2 at the second junction point P5.

[0144] Figure 7 is a simplified circuit configuration diagram of the conductor of the hidden Figure 5 antenna device. Please refer to Figure 7 , Figure 7The fifth sub-segment L3 and the sixth sub-segment R3 are shown. However, in this embodiment, for example, both the fifth sub-segment L3 and the sixth sub-segment R3 are 0. Therefore, the phase difference between one part and another part of the multiple signals respectively fed by these branch feeding points 122 is between 150 degrees and 210 degrees. For example, the phase difference between the feeding signal of the upper-right branch feeding point 122 and the feeding signal of the lower-right branch feeding point 122 is between 150 degrees and 210 degrees, and the phase difference between the feeding signal of the upper-left branch feeding point 122 and the feeding signal of the lower-left branch feeding point 122 is between 150 degrees and 210 degrees. In this way, with reference to Figure 5 , Figure 6 , Figure 7 , the turning direction of the first antenna structure 110 corresponding to one part of the signals is opposite to the turning direction of the first antenna structure 110 corresponding to another part of the signals. For example, the turning direction (e.g., counterclockwise) of the upper-right first antenna structure 110 is opposite to the turning direction (e.g., clockwise) of the lower-right first antenna structure 110, and the turning direction (e.g., counterclockwise) of the upper-left first antenna structure 110 is opposite to the turning direction (e.g., clockwise) of the lower-left first antenna structure 110. Similarly, for example, the turning direction (e.g., clockwise) of the upper-right second antenna structure 220 is opposite to the turning direction (e.g., counterclockwise) of the lower-right second antenna structure 220, and the turning direction (e.g., clockwise) of the upper-left second antenna structure 220 is opposite to the turning direction (e.g., counterclockwise) of the lower-left second antenna structure 220. On the other hand, in this embodiment, the phase difference between the feeding signal of the upper-left branch feeding point 122 and the feeding signal of the upper-right branch feeding point 122 is within plus or minus 30 degrees, and the phase difference between the feeding signal of the lower-left branch feeding point 122 and the feeding signal of the lower-right branch feeding point 122 is within plus or minus 30 degrees. In other embodiments, the fifth sub-segment L3 and the sixth sub-segment R3 can also be other lengths that may cause the phase differences between different signals respectively fed by some of these branch feeding points 122 to be between 150 degrees and 210 degrees.

[0145] In addition, in this embodiment, with reference to Figure 5 , Figure 6 , Figure 7, the four first antenna structures 110 include four first transmission parts 112. The lower left and upper left first transmission parts 112 are respectively connected to both ends of the third sub-segment L2 at the first intersection point P3 and the third intersection point P4, and the lower right and upper right first transmission parts 112 are respectively connected to both ends of the fourth sub-segment R2 at the second intersection point P5 and the fourth intersection point P6. The phase difference between the signals fed at the first intersection point P3 and the second intersection point P5 of the main feeding point 120 is within plus or minus 30 degrees. For example, the total length of the first sub-segment L1 and the third sub-segment L2 is the same as the total length of the second sub-segment R1 and the fourth sub-segment R2. Therefore, the phase difference between the signals fed at the first intersection point P3 and the second intersection point P5 of the main feeding point 120 is, for example, 0, but this is not a limitation.

[0146] In the antenna device 10a of this embodiment, due to the position changes of the first feeding point P1, the second feeding point P2, and the main feeding point 120, both the fifth sub-segment L3 and the sixth sub-segment R3 are 0, that is, the first feeding point P1 coincides with the third intersection point P4, for example, and the second feeding point P2 coincides with the fourth intersection point P6, for example. In this way, the lengths of the transmission lines connected to the two upper first antenna structures 110 and the two lower first antenna structures 110 are different, resulting in different feeding phases for the two upper first antenna structures 110 and the two lower first antenna structures 110. In other embodiments, the first feeding point P1 may not coincide with the third intersection point P4, and the second feeding point P2 may not coincide with the fourth intersection point P6, and the feeding phase can be adjusted by changing the length configuration of the transmission line.

[0147] Furthermore, the phase difference between the signals fed at the first intersection point P3 and the third intersection point P4 of the main feeding point 120 is between 150 degrees and 210 degrees, for example, 180 degrees in this embodiment, and the phase difference between the signals fed at the second intersection point P5 and the fourth intersection point P6 of the main feeding point 120 is between 150 degrees and 210 degrees, for example, 180 degrees in this embodiment. Therefore, in the antenna arrangement, the turning directions of the upper left first antenna structure 110 (having the first radiation part 116a) and the lower left first antenna structure 110 (having the first radiation part 116a') are opposite (counterclockwise and clockwise), showing mirror symmetry, and the turning directions of the upper right first antenna structure 110 (having the first radiation part 116a) and the lower right first antenna structure 110 (having the first radiation part 116a') are opposite (counterclockwise and clockwise), showing mirror symmetry.

[0148] Similarly, the turning directions of the second antenna structure 220 (with the second radiation part 226a) in the upper left and the second antenna structure 220 (with the second radiation part 226a') in the lower left are opposite (clockwise and counterclockwise), showing mirror symmetry. The turning directions of the second antenna structure 220 (with the second radiation part 226a) in the upper right and the second antenna structure 220 (with the second radiation part 226a') in the lower right are opposite (clockwise and counterclockwise), showing mirror symmetry.

[0149] Such a design enables the first radiation parts 116a, 116a' and the second radiation parts 226a, 226a' of the antenna device 10a to form radiation currents in the same clockwise or counterclockwise direction, so that the first antenna unit 11a of the antenna device 10a can form an omnidirectional first radiation pattern.

[0150] Figure 8 Yes Figure 5 is the radiation pattern diagram of the first antenna unit of the antenna device. Please refer to Figure 8 , Figure 8 is Figure 5 the first radiation pattern generated by the first antenna unit 11a of the antenna device 10a. Figure 8 shows the cross-section of the first radiation pattern in the XZ plane and the cross-section of the first radiation pattern in the YZ plane, and it can be verified from Figure 8 that Figure 5 the first radiation pattern of the first antenna unit 11a of the antenna device 10a is an omnidirectional pattern, showing good performance.

[0151] Figure 9A and Figure 9B are schematic diagrams of different perspectives of an antenna device according to another embodiment of the present invention. Please refer to Figure 9A and Figure 9B , Figure 9A The main difference between the antenna device 10b in Figure 5 and the antenna device 10a in

[0152] In addition, Figure 9A the main difference between the antenna device 10b in Figure 5Another major difference between the antenna device 10a and the antenna device 10b is that in the first antenna unit 11b of the antenna device 10b, the first radiating portion 116b (or 116b') of each of the first antenna structures 110 forms a first folded portion. For example, each first radiating portion 116b (or 116b') is, for example, U-shaped, and the first slot 118 is, for example, formed in the first folded portion. In other embodiments, the first folded portion may also be only slightly bent, without forming the first slot 118.

[0153] The second radiating portion 226b (or 226b') of each of the second antenna structures 220 forms a second folded portion. For example, each second radiating portion 226b (or 226b') is, for example, U-shaped, and the second slot 228 is, for example, formed in the second folded portion. In other embodiments, the second folded portion may also be only slightly bent without forming the second slot 228.

[0154] Depend on Figure 9B It can be seen that the projection of the first folded portion (that is, the first radiating portion 116b or 116b') of each of these first antenna structures 110 on the second plane Z2 forms a ring together with the second folded portion (that is, the corresponding second radiating portion 226b or 226b') of the corresponding second antenna structure 220. For example, the first folded portion and the second folded portion that form a ring together can be symmetrical or asymmetrical, that is, the first radiating portion 116b (or 116b') and the corresponding second radiating portion 226b (or 226b') can be of equal length or of unequal length.

[0155] In addition, the first antenna unit 11b of the antenna device 10b may further selectively include a plurality of vias 20, each of which is connected between the corresponding first folded portion (i.e., the first radiating portion 116b or 116b') and the corresponding second folded portion (i.e., the corresponding second radiating portion 226b or 226b'). For example, each of which is connected between the end of the corresponding first folded portion (i.e., the first radiating portion 116b or 116b') and the end of the corresponding second folded portion (i.e., the corresponding second radiating portion 226b or 226b'). In other embodiments, the length of at least one of the first folded portion and the corresponding second folded portion may be shorter than Figure 9A , Figure 9B The embodiment is further extended so that the overlapping portion of the first folding portion and the corresponding second folding portion is not necessarily at the end. In this case, the conductive hole 20 can also be arranged in a portion other than the end of the first folding portion and / or a portion other than the end of the corresponding second folding portion.

[0156] Of course, in other embodiments, the projection of the first radiation portion 116b or 116b' on the second plane Z2 and the corresponding second radiation portion 226b or 226b' may also jointly form a non-closed ring, or may not be annular. In addition, the first antenna unit 11b of the antenna device 10b may not have the via hole 20, and the drawings are not restrictive.

[0157] Figure 10 Yes Figure 9A Radiation pattern diagram of the first antenna unit of the antenna device. Please refer to Figure 10 , Figure 10 For Figure 9A The first radiation pattern generated by the first antenna unit 11b of the antenna device 10b, Figure 10 shows the cross-section of the first radiation pattern in the XZ plane and the cross-section of the first radiation pattern in the YZ plane, and it can be verified from Figure 10 that, Figure 9A the first radiation pattern of the first antenna unit 11b of the antenna device 10b is an omnidirectional pattern and has good performance.

[0158] Figure 11 is a schematic diagram of an antenna device according to another embodiment of the present invention. Please refer to Figure 11 , Figure 11 The main difference between the antenna device 10b' and Figure 9A the antenna device 10b is that the second antenna unit 12b' of the antenna device 10b' is a dielectric resonator antenna instead of a patch antenna. In this embodiment, the feeding point Q2 of the second antenna unit 12b' is located in the first plane Z1, but it is not limited thereto. In other embodiments, there may also be partial metal coverage above the second antenna unit 12b' and the signal is fed in from the partial metal, or the second antenna unit 12b' covers a monopole antenna to increase the bandwidth or other characteristics, and the present invention does not limit this.

[0159] Figure 12 And Figure 13 are top views of various antenna devices according to other embodiments of the present invention. Please note that, Figure 12 And Figure 13 omit showing the transmission line 130. Please refer to Figure 12 , Figure 12 The antenna device 10c and Figure 1 the antenna device 10 are similar. Since Figure 12 the phase differences of the multiple signals respectively fed into these branch feeding points 122 of the first antenna unit 11c of Figure 1 are within plus or minus 30 degrees (for example, the phase difference is 0), thus similar to Figure 12In the antenna device 10c, all the first antenna structures 110 are arranged along the clockwise direction, and all the second antenna structures 220 in the antenna device 10c are arranged along the other clockwise direction, so that when the radiation current circulates, it can be either clockwise or counterclockwise at the same time.

[0160] Figure 12 The main difference between the antenna device 10c and Figure 1 the antenna device 10 is that in this embodiment, the number of the first antenna structures 110 of the first antenna unit 11c is eight, and the number of the second antenna structures 220 of the first antenna unit 11c is eight. The projections of four of the first antenna structures 110 on the plane where the conductor 210 is located (i.e., the Figure 1 second plane Z2) are respectively located at the four corners (such as vertices) of the conductor 210, and the projections of the other four first antenna structures 110 on the plane where the conductor 210 is located (i.e., the Figure 1 second plane Z2) are respectively located at the four sides of the conductor 210. The second antenna structures 220 are also correspondingly arranged.

[0161] Please refer to Figure 13 , Figure 13 The antenna device 10d and Figure 5 the antenna device 10a are similar. Since Figure 13 the phase difference between a part and another part of the multiple signals respectively fed into these branch feeding points 122 of the first antenna unit 11d of Figure 5 is between 150 degrees and 210 degrees (for example, the phase difference is 180 degrees), similar to Figure 13 the antenna device 10a, in the antenna device 10d, the turning directions of some of the first antenna structures 110 are opposite to those of the other part of the first antenna structures 110, and the turning directions of some of the second antenna structures 220 are opposite to those of the other part of the second antenna structures 220. For example, the turning directions of the first antenna structures 110 in the upper right, lower right, upper left, and lower left (with the first radiation part 116a) are opposite to those of the first antenna structures 110 in the middle upper and middle lower (with the first radiation part 116a') (counterclockwise and clockwise), and the turning directions of the second antenna structures 220 in the upper right, lower right, upper left, and lower left (with the second radiation part 226a) are opposite to those of the second antenna structures 220 in the middle upper and middle lower (with the second radiation part 226a') (clockwise and counterclockwise). In this way, when the radiation current circulates, it can be either clockwise or counterclockwise at the same time.

[0162] Figure 13 The antenna device 10d and Figure 5The main difference of the antenna device 10a is that, in this embodiment, the shape of the conductor 210 of the first antenna unit 11d is hexagonal, and the projection of the first antenna structure 110 on the plane where the conductor 210 is located (i.e., the second plane Z2 of Figure 5 is located on the side of the conductor 210. The second antenna structure 220 is also correspondingly configured.

[0163] It should be noted that although in the above embodiment, the numbers of the first antenna structure 110 and the second antenna structure 220 are both even, in other embodiments, the numbers of the first antenna structure 110 and the second antenna structure 220 can also be odd, and are not limited thereto.

[0164] Figure 14 is a schematic diagram of an antenna device according to another embodiment of the present utility model. Figure 15 is Figure 14 a top view schematic diagram of the first antenna unit of the antenna device. Please refer to Figure 14 and Figure 15 , the conductor 210 of the first antenna unit 11e is polygonal, for example, quadrilateral. Of course, in other embodiments, the conductor 210 can also be other polygons, circles, ellipses or irregular shapes including curves. And Figure 14 the main difference between the antenna device 10e and Figure 1 the antenna device 10 is that, in this embodiment, these second antenna structures 220 of the first antenna unit 11e are connected to the side of the conductor 210. In addition, the projection of the main feeding point 120 on the plane where the conductor 210 is located (i.e., the second plane Z2 of Figure 1 is located at the center of the conductor 210, and the projections of the first feeding point P1 and the second feeding point P2 on the plane where the conductor 210 is located (i.e., the second plane Z2 of Figure 1 are located on the diagonal of the conductor 210, for example. And since Figure 14 the phase differences of the multiple signals respectively fed by these branch feeding points 122 are within plus or minus 30 degrees (for example, the phase difference is 0), so similar to Figure 1 the antenna device 10, Figure 14 in the antenna device 10e, all the first antenna structures 110 are arranged along the clockwise direction, and all the second antenna structures 220 in the antenna device 10e are arranged along the other clockwise direction, so that when the radiation current circulates, it can be either clockwise or counterclockwise at the same time.

[0165] Figure 16 is Figure 14 the radiation pattern diagram of the first antenna unit of the antenna device. Please refer to Figure 16 , Figure 16 is Figure 14 the radiation pattern generated by the first antenna unit 11e of the antenna device 10e,Figure 16 shows a cross-section of the first radiation pattern in the XZ plane and a cross-section of the first radiation pattern in the YZ plane, and it can be verified by Figure 16 that Figure 14 the first radiation pattern of the first antenna element 11e of the antenna device 10e is an omnidirectional pattern and has good performance.

[0166] Figure 17 and Figure 18 are schematic views of different perspectives of an antenna device according to another embodiment of the present invention. Please refer to Figure 17 and Figure 18 , the conductor 210 of the first antenna element 11f is polygonal, for example, quadrilateral. Of course, in other embodiments, the conductor 210 can also be other polygons, circles, ellipses or irregular shapes including curves. And Figure 17 the antenna device 10f and Figure 5 the main difference between the antenna device 10a is that, in this embodiment, these second antenna structures 220 are connected to the side of the conductor 210. In addition, the projection of the main feeding point 120 on the plane where the conductor 210 is located (i.e., the Figure 5 second plane Z2) is located at the corner of the conductor 210, and the projections of the first feeding point P1 and the second feeding point P2 on the plane where the conductor 210 is located (i.e., the Figure 5 second plane Z2) are, for example, located on the side of the conductor 210. And because Figure 17 the phase difference between a part and another part of the multiple signals respectively fed by these branch feeding points 122 is between 150 degrees and 210 degrees (for example, the phase difference is 180 degrees), so similar to Figure 5 the antenna device 10a, Figure 17 in the antenna device 10f, the turning direction of part of the first antenna structure 110 is opposite to that of another part of the first antenna structure 110, and the turning direction of part of the second antenna structure 220 is opposite to that of another part of the second antenna structure 220. In this way, when the radiation current circulates, it can be clockwise or counterclockwise at the same time.

[0167] Figure 19 and Figure 20 are schematic views of different perspectives of an antenna device according to another embodiment of the present invention. Please refer to Figure 19 and Figure 20 , Figure 19 the antenna device 10g and Figure 5The main difference of the antenna device 10a is that, in this embodiment, the number of the first antenna structures 110 of the first antenna unit 11g is two, the number of the second antenna structures 220 is two, and the transmission lines 130 are respectively connected to the two first transmission portions 112 of the two first antenna structures 110. In addition, the main feeding point 120 is located on the transmission line 130. In this embodiment, the conductor 210 is polygonal, for example, quadrilateral. Of course, in other embodiments, the conductor 210 can also be other polygons, circles, ellipses or irregular shapes including curves. In this embodiment, the conductor 210 is respectively connected to the two second transmission portions 222 of the two second antenna structures 220, and the projection of the main feeding point 120 on the plane where the conductor 210 is located (i.e., Figure 5 the second plane Z2) deviates from the center of the conductor 210. Further, the two second antenna structures 220 are connected to two of the corners of the conductor 210 (for example, two vertices located diagonally), and the projection of the main feeding point 120 on the plane where the conductor 210 is located (i.e., Figure 5 the second plane Z2) is, for example, located at one of the corners of the conductor 210, and the projection of the transmission line 130 on the plane where the conductor 210 is located (i.e., Figure 5 the second plane Z2) extends, for example, along two sides of the conductor 210. In this way, more space can be provided for the configuration of other electronic components to avoid interference between the electronic components and the transmission line or to avoid the electronic components affecting the transmission signal. Moreover, Figure 19 the two branch feeding points 122 are respectively located at the first turning portions 114 of the corresponding first antenna structures 110, and the phase difference between the two signals respectively fed by the two branch feeding points 122 is between 150 degrees and 210 degrees. Therefore, Figure 19 the antenna device 10g is configured such that the turning directions of the two first antenna structures 110 are opposite to each other, and the turning directions of the two second antenna structures 220 are opposite to each other.

[0168] In this way, similar to Figure 5 the antenna device 10a, when Figure 19When the antenna device 10g operates, the first radiation portions 116a, 116a' of the two first antenna structures 110 and the second radiation portions 226a, 226a' of the two second antenna structures 220 form radiation currents that are all counterclockwise. Alternatively, the first radiation portions 116a, 116a' of the two first antenna structures 110 and the second radiation portions 226a, 226a' of the two second antenna structures 220 can also form radiation currents that are all clockwise. As a result, the first antenna unit 11g of the antenna device 10g can form an omnidirectional first radiation pattern. As described above, the above configuration can still provide an omnidirectional radiation pattern when the phase difference of the fed-in signals is between 150 degrees and 210 degrees. Therefore, a more flexible circuit configuration can be provided, and the architecture of the antenna device is relatively simple, and the occupied space can also be smaller.

[0169] Figure 21 and Figure 22 is a schematic diagram of different perspectives of an antenna device according to another embodiment of the present invention. Please refer to Figure 21 and Figure 22 , Figure 21 The main difference between the antenna device 10h and Figure 19 the antenna device 10g is that, in this embodiment, the first radiation portion 116b (or 116b') of each of the two first antenna structures 110 of the first antenna unit 11h forms a first folding portion. For example, the first radiation portion 116b (or 116b') is, for example, in a U shape, and the first slot 118 is formed within the first folding portion. The second radiation portion 226b (or 226b') of each of the two second antenna structures 220 of the first antenna unit 11h forms a second folding portion. For example, the second radiation portion 226b (or 226b') is, for example, in a U shape, and the second slot 228 is formed within the second folding portion. In other embodiments, the first folding portion or the second folding portion may also only form a small part of the bend without forming the first slot 118 or the second slot 228.

[0170] It can be seen from Figure 22 that the projection of the first folding portion (i.e., the first radiation portion 116b or 116b') of each of the two first antenna structures 110 on the plane where the conductor 210 is located (which is the Figure 5 second plane Z2) and the second folding portion (i.e., the corresponding second radiation portion 226b or 226b') of the corresponding second antenna structure 220 together form a ring. For example, the first folding portion and the second folding portion that together form a ring can be symmetric or asymmetric, that is, the first radiation portion 116b (or 116b') and the corresponding second radiation portion 226b (or 226b') can be of equal length or of unequal length.

[0171] In addition, it can be seen fromFigure 21 It can be seen that the first antenna unit 11h of the antenna device 10h more preferably includes a plurality of via holes 20, each of which is connected between the corresponding first folding portion (i.e., the first radiation portion 116b or 116b') and the corresponding second folding portion (i.e., the corresponding second radiation portion 226b or 226b'). For example, each of these via holes 20 is connected between the end of the corresponding first folding portion (i.e., the first radiation portion 116b or 116b') and the end of the corresponding second folding portion (i.e., the corresponding second radiation portion 226b or 226b'). In other embodiments, the length of at least one of the first folding portion and the corresponding second folding portion can be extended compared to Figure 21 , Figure 22 the embodiment of, such that the overlapping portion of the first folding portion and the corresponding second folding portion is not necessarily at the end. In this case, the via holes 20 can also be provided at portions other than the end of the first folding portion and / or portions other than the end of the corresponding second folding portion.

[0172] Of course, in other embodiments, the projection of the first radiation portion 116b or 116b' on the plane where the conductor 210 is located (i.e., the second plane Z2 of Figure 5 ) and the corresponding second radiation portion 226b or 226b' can also jointly form a non-closed ring, or may not be annular. In addition, the first antenna unit 11h of the antenna device 10h may not have the via holes 20, without being limited by the drawings.

[0173] Figure 23A is a schematic diagram of an antenna device according to another embodiment of the present invention. Figure 23B is Figure 23A a top view schematic diagram of the first antenna unit of the antenna device. Please refer to Figure 23A and Figure 23B , the conductor 210 of the first antenna unit 11i is a polygon, such as a quadrilateral. Of course, in other embodiments, the conductor 210 can also be other polygons, circles, ellipses or irregular shapes including curves. And Figure 23A the antenna device 10i of Figure 5 and the antenna device 10a of Figure 23A and Figure 23BIn the embodiments, the second transmission path F2 all passes through the second feeding point P2, but the first transmission path F1 does not all pass through the first feeding point P1; in other similar embodiments, it can also be the case of left - right swapping, that is, the first transmission path F1 all passes through the first feeding point P1, but the second transmission path F2 does not all pass through the second feeding point P2, forming an asymmetric transmission path configuration. And because Figure 23A the phase difference between a part and another part of the multiple signals respectively fed by these branch feeding points 122 is between 150 degrees and 210 degrees (for example, the phase difference is 180 degrees), so similar to Figure 5 the antenna device 10a, Figure 23A in the antenna device 10i, the turning direction of a part of the first antenna structure 110 is opposite to that of another part of the first antenna structure 110, and the turning direction of a part of the second antenna structure 220 is opposite to that of another part of the second antenna structure 220. In this way, when the radiating current circulates, it can be clockwise or counter - clockwise at the same time.

[0174] Figure 24A and Figure 24B are schematic views of different perspectives of an antenna device according to another embodiment of the present utility model. Please refer to Figure 24A and Figure 24B , the conductor 210 of the first antenna unit 11j is polygonal, for example, quadrilateral. Of course, in other embodiments, the conductor 210 can also be other polygons, circles, ellipses or irregular shapes including curves. And Figure 24A the main difference between the antenna device 10j and Figure 5 the antenna device 10a is that, in this embodiment, the main feeding point 120 of the first antenna unit 11j to the first feeding point P1 are two non - overlapping parallel lines, and the two parallel lines meet at the first feeding point P1. And because Figure 24A the phase difference between a part and another part of the multiple signals respectively fed by these branch feeding points 122 is between 150 degrees and 210 degrees (for example, the phase difference is 180 degrees), so similar to Figure 5 the antenna device 10a, Figure 24A in the antenna device 10j, the turning direction of a part of the first antenna structure 110 is opposite to that of another part of the first antenna structure 110, and the turning direction of a part of the second antenna structure 220 is opposite to that of another part of the second antenna structure 220. In this way, when the radiating current circulates, it can be clockwise or counter - clockwise at the same time.

[0175] Figure 25A and Figure 25B are schematic views of different perspectives of an antenna device according to another embodiment of the present utility model. Please refer toFigure With ​ , the conductor 210 of the first antenna unit 11k is a polygon, for example, a quadrilateral. Of course, in other embodiments, the conductor 210 can also be other polygons, circles, ellipses or irregular shapes including curves. ​ The main difference between the antenna device 10k of ​ and the antenna device 10a of ​ is that, in this embodiment, the first transmission line segment 132 of the first antenna unit 11k includes a first branch line segment L4 and a second branch line segment L5. The first branch line segment L4 connects the main feeding point 120 to the corresponding first antenna structure 110, and the second branch line segment L5 connects the main feeding point 120 to the corresponding first antenna structure 110. The first branch line segment L4 and the second branch line segment L5 do not overlap and are not parallel to each other. And because ​ the phase difference between a part and another part of the multiple signals respectively fed by these branch feeding points 122 is between 150 degrees and 210 degrees (for example, the phase difference is 180 degrees), so similar to ​ the antenna device 10a of

[0176] ​ is a schematic diagram of different perspectives of an antenna device according to another embodiment of the present invention. Please refer to ​ , the conductor 210 of the first antenna unit 11l is a polygon, for example, a quadrilateral. Of course, in other embodiments, the conductor 210 can also be other polygons, circles, ellipses or irregular shapes including curves. ​ The main difference between the antenna device 10l of ​ and the antenna device 10a of is that, in this embodiment, the antenna device 10l further includes a reflector 30. The second structural layer 200 of the first antenna unit 11l is located between the first structural layer 100 and the reflector 30. The distance H between the reflector 30 and the second structural layer 200 is greater than or equal to 0.1 air wavelength and less than or equal to 1 air wavelength. In this embodiment, the distance H is 25 mm, but not limited thereto. In addition, in other embodiments, the configuration of the antenna device may also be that the first structural layer is located between the second structural layer and the reflector, and the distance between the reflector and the first structural layer is greater than or equal to 0.1 air wavelength and less than or equal to 1 air wavelength. The present invention does not limit this. In addition, the reflector 30 can also be applied to the above-mentioned other antenna devices and other antenna devices to be described later, not limited to the illustration.

[0177] ​ is ​ the radiation pattern of the first antenna unit of the antenna device of ​ is ​ the radiation pattern of the second antenna unit of the antenna device of ​ and ​ , ​ is ​ the first radiation pattern generated by the first antenna unit 11l of the antenna device 10l of ​ is ​ the second radiation pattern of the second antenna unit 12 of the antenna device 10l of ​ shows the cross section of the first radiation pattern in the XZ plane and the cross section of the first radiation pattern in the YZ plane, ​ shows the cross section of the second radiation pattern in the XZ plane and the cross section of the second radiation pattern in the YZ plane. And from ​ and ​ it can be verified that the first radiation pattern is a radiation pattern close to a cone, and the second radiation pattern is a radiation pattern close to a cone, which can be applied to the situation where the radiation energy in a certain specific direction or a certain specific angle or a certain specific range needs to be stronger, and has good performance.

[0178] ​ is a schematic diagram of an antenna device according to another embodiment of the present invention. ​ is ​ the top view schematic diagram of the first antenna unit of the antenna device of ​ and ​ , ​ the antenna device 10m of ​The main difference of the antenna device 10 is that, in this embodiment, the first structural layer 100m of the first antenna unit 11m includes a main feeding point 120 and a transmission line 130, but does not include an antenna structure, while the second structural layer 200m of the first antenna unit 11m includes a plurality of antenna structures 230 and a conductor 210. In this embodiment, the number of antenna structures 230 is four, but it is not limited thereto. These antenna structures 230 are separated from each other. These antenna structures 230 are connected to the outside of the conductor 210, and a plurality of openings 216 are formed in the conductor 210 and extend to these antenna structures 230 respectively, and the transmission line 130 straddles these openings 216. The first transmission line segment 132 is connected to a part of these antenna structures 230 through a via hole (not shown) for example, and the second transmission line segment 134 is connected to another part of these antenna structures 230 through a via hole (not shown) for example. A plurality of first transmission paths F1 are formed from the main feeding point 120 to the part of the antenna structures 230, and these first transmission paths F1 pass through the first feeding point P1. A plurality of second transmission paths F2 are formed from the main feeding point 120 to another part of the antenna structures 230, and these second transmission paths F2 pass through the second feeding point P2. In this embodiment, the transmission line 130 straddles these openings 216 as shown in the upper left to form a balun feeding structure. It should be noted that, in the embodiments of ​ as shown in the upper left, it straddles these openings 216 to form a balun feeding structure. It should be noted that, in ​ and ​ 's embodiments, the transmission line 130 straddles the openings 216 in a clockwise bending manner on these antenna structures 230. With the configuration that the lengths of these first transmission paths F1 are equal and the lengths of these second transmission paths F2 are equal, the phase difference of the signals fed by the main feeding point 120 in these antenna structures 230 can be within plus or minus 30 degrees, that is to say, these antenna structures 230 can form in-phase feeding. Further, the bending direction of the transmission line 130 straddling the openings 216 can be regarded as ​ the turning direction of the antenna structure described in the

[0179] ​ and ​ are schematic diagrams of different perspectives of an antenna device according to another embodiment of the present invention. Please refer to ​ and ​ , ​ the antenna device 10n and ​The main difference of the antenna device 10m is that, in this embodiment, the main feeding point 120 of the first antenna unit 11n is offset from the center of the conductor 210 in the projection on the second plane Z2( ​ ). More specifically, the projection position of the main feeding point 120 in this embodiment is located at the edge of the conductor 210. Such a design can leave the space above the conductor 210 to provide a relatively complete space for placing electronic components such as chips (not shown), so as to avoid the mutual interference between the electronic components and the transmission line or reduce the influence of the electronic components on the transmitted signal. It should be noted that, in ​ and ​ 's embodiments, since the projection position of the main feeding point 120 is located at the edge of the conductor 210, the lengths of the transmission line 130 from the main feeding point 120 to the upper left and lower left antenna structures 230 are different, and the lengths of the transmission line 130 from the main feeding point 120 to the upper right and lower right antenna structures 230 are different, resulting in the phase difference of the signals fed by the main feeding point 120 in the upper left and lower left antenna structures 230 being between 150 degrees and 210 degrees, and the phase difference of the signals fed by the main feeding point 120 in the upper right and lower right antenna structures 230 being between 150 degrees and 210 degrees. Therefore, phase compensation is required. In this way, in ​ and ​ 's embodiments, the transmission line 130 crosses the opening 216 in a clockwise bending manner on the upper left and upper right antenna structures 230, while the transmission line 130 crosses the opening 216 in a counterclockwise bending manner on the lower left and lower right antenna structures 230. That is to say, the feeding mechanisms of the upper left and lower left antenna structures 230 are reverse, and the feeding mechanisms of the upper right and lower right antenna structures 230 are reverse. When the antenna device 10n operates, these antenna structures 230 form radiation currents that are all counterclockwise, or these antenna structures 230 form radiation currents that are all clockwise, so that when the radiation current circulates, it can be both clockwise or counterclockwise at the same time, and further enabling the first antenna unit 11n of the antenna device 10n to form an omnidirectional first radiation pattern. Further, in subsequent ​ 's embodiments, when the position of the main feeding point 120 changes, the signals fed by the main feeding point 120 in the antenna structure 230 will also change accordingly. Therefore, the bending direction of the transmission line 130 crossing the opening 216 must be changed accordingly to achieve an omnidirectional radiation pattern, such as the change modes of the turning directions of the antenna structures described in ​ , ​ , Figure 13 , Figure 14 , Figure 17 , Figure 20 and other embodiments.

[0180] Figure 30A And Figure 30BSchematic diagrams of different perspectives of an antenna device according to another embodiment of the present utility model. Please refer to Figure 30A and Figure 30B , Figure 30A The main difference between the antenna device 10o of Figure 29A and the antenna device 10n of Figure 1 is that, in this embodiment, the projection of the main feeding point 120 of the first antenna unit 11o on the second plane Z2 ( Figure 30B ) is located at the corner of the conductor 210 instead of the edge center of the conductor 210. Specifically, the main feeding point 120 of the first antenna unit 11o is close to one of the multiple antenna structures 230 (for example, the antenna structure 230 in the upper left corner of Figure 30B ). Such a design can leave the space above the conductor 210 to provide a relatively complete space for placing electronic components such as chips (not shown), so as to avoid interference between the electronic components and the transmission line or reduce the influence of the electronic components on the transmitted signal. When the antenna device 10o operates, these antenna structures 230 form radiation currents that are all counterclockwise, or these antenna structures 230 form radiation currents that are all clockwise, so that when the radiation currents surround, they can be both clockwise or counterclockwise at the same time, and further enable the first antenna unit 11o of the antenna device 10o to form an omnidirectional first radiation pattern.

[0181] Figure 31A and Figure 31B Schematic diagrams of different perspectives of an antenna device according to another embodiment of the present utility model. Please refer to Figure 31A and Figure 31B , Figure 31A The main difference between the antenna device 10p of Figure 30A and the antenna device 10o of

[0182] Figure 32A is that, in this embodiment, multiple openings 216 are located on both sides of the conductor 210 parallel to the axial direction Y and extend along the axial direction Y instead of being located on both sides of the conductor 210 parallel to the axial direction X and extending along the axial direction X. Such a design can leave the space above the conductor 210 to provide a relatively complete space for placing electronic components such as chips (not shown), so as to avoid interference between the electronic components and the transmission line or reduce the influence of the electronic components on the transmitted signal. When the antenna device 10o operates, these antenna structures 230 form radiation currents that are all counterclockwise, or these antenna structures 230 form radiation currents that are all clockwise, so that when the radiation currents surround, they can be both clockwise or counterclockwise at the same time, and further enable the first antenna unit 11p of the antenna device 10o to form an omnidirectional first radiation pattern.

[0182] Figure 32A Schematic diagram of an antenna device according to another embodiment of the present utility model. Figure 32B is Figure 32A A top view schematic diagram of the first antenna unit of the antenna device. Please refer to Figure 32A andFigure 32B , Figure 32A The main difference between the antenna device 10q of Figure 28A and the antenna device 10m of Figure 1 is that in this embodiment, these antenna structures 230 of the first antenna unit 11q are connected to the side of the conductor 210. In addition, the projection of the main feeding point 120 on the plane where the conductor 210 is located (i.e., the

[0183] Figure 33A second plane Z2 of Figure 33B is located at the center of the conductor 210. When the antenna device 10q operates, these antenna structures 230 form radiation currents that are all counterclockwise, or these antenna structures 230 form radiation currents that are all clockwise, so that when the radiation currents circulate, they can be both clockwise or counterclockwise at the same time, and further enabling the first antenna unit 11q of the antenna device 10q to form an omnidirectional first radiation pattern. Figure 33A and Figure 33B , Figure 33A The main difference between the antenna device 10r of Figure 32A and the antenna device 10q of Figure 1 is that in this embodiment, the projection of the main feeding point 120 on the second plane Z2 ( Figure 1 ) deviates from the center of the conductor 210. Specifically, the projection of the main feeding point 120 on the plane where the conductor 210 is located (i.e., the

[0184] Figure 34A second plane Z2 of Figure 34B is located at the corner of the conductor 210 and close to the end of the antenna structure 230. When the antenna device 10r operates, these antenna structures 230 form radiation currents that are all counterclockwise, or these antenna structures 230 form radiation currents that are all clockwise, so that when the radiation currents circulate, they can be both clockwise or counterclockwise at the same time, and further enabling the first antenna unit 11r of the antenna device 10r to form an omnidirectional first radiation pattern. Figure 34A and Figure 34B , Figure 34A The main difference between the antenna device 10s of Figure 33A and the antenna device 10r of Figure 1The projection of the second plane Z2) is located at the center of the side of the conductor 210 and close to the antenna structure 230. When the antenna device 10s operates, these antenna structures 230 form radiating currents that are all counterclockwise, or these antenna structures 230 form radiating currents that are all clockwise, so that when the radiating currents circulate, they can be either clockwise or counterclockwise at the same time, and thus the first antenna unit 11s of the antenna device 10s can form an omnidirectional first radiation pattern.

[0185] Figure 35A and Figure 35B are schematic diagrams of different perspectives of an antenna device according to another embodiment of the present invention. Please refer to Figure 35A and Figure 35B , Figure 35A The main difference between the antenna device 10t of Figure 28A and the antenna device 10m of Figure 1 is that in this embodiment, the first antenna unit 11s includes two antenna structures 230 instead of four antenna structures, and these antenna structures 230 are connected to the diagonals of the conductor 210. For example, these antenna structures 230 are connected to the upper left corner and the lower right corner of the conductor 210. In addition, the projection of the main feeding point 120 on the plane where the conductor 210 is located (i.e., the second plane Z2 of Figure 1 ) is located at another corner of the conductor 210 (such as the lower left corner) and far from the antenna structure 230, and the distances from the main feeding point 120 to the two antenna structures 230 are equal. When the antenna device 10t operates, these antenna structures 230 form radiating currents that are all counterclockwise, or these antenna structures 230 form radiating currents that are all clockwise, so that when the radiating currents circulate, they can be either clockwise or counterclockwise at the same time, and thus the first antenna unit 11t of the antenna device 10t can form an omnidirectional first radiation pattern.

[0186] Figure 36A and Figure 36B are schematic diagrams of different perspectives of an antenna device according to another embodiment of the present invention. Please refer to Figure 36A and Figure 36B , Figure 36A The main difference between the antenna device 10u of Figure 35A and the antenna device 10t of Figure 1The projection of the second plane Z2) is located near the corner of the antenna structure 230, that is, the distances from the main feeding point 120 to the two antenna structures 230 are not equal. When the antenna device 10u operates, these antenna structures 230 form radiation currents in the same counterclockwise direction, or these antenna structures 230 form radiation currents in the same clockwise direction, so that when the radiation currents circulate, they can be clockwise or counterclockwise at the same time, and further enable the first antenna unit 11u of the antenna device 10u to form an omnidirectional first radiation pattern.

[0187] Furthermore, the antenna devices 10m, 10n, 10o, 10p, 10q, 10r, 10s, 10t, 10u of the above embodiments may further include a second antenna unit 12, and the second antenna unit 12 is disposed on the first plane Z1 (labeled in Figure 28A ). In the above embodiments, the second antenna unit 12 is, for example, a monopole antenna. The second antenna unit 12 is used to generate a second radiation pattern, and the second radiation pattern has a second co-polarization direction D2 (labeled in Figure 28A ). There is an included angle θ (labeled in Figure 28A ) between the second co-polarization direction D2 and the first co-polarization direction D1. In the above embodiments, the second co-polarization direction D2 and the first co-polarization direction D1 are orthogonal to each other, that is, the angle of the included angle θ is 90 degrees, but not limited thereto. In the above embodiments, the first co-polarization direction D1 is parallel to the axial direction X, the second co-polarization direction D2 is parallel to the axial direction Z, and the axial direction Y is perpendicular to the axial directions X and Z, but not limited thereto. In addition, the projection of the second antenna unit 12 on the second plane Z2 is located within the conductor 210.

[0188] It should be noted, however, that in other embodiments, the antenna devices 10m, 10n, 10o, 10p, 10q, 10r, 10s, 10t, 10u of the above embodiments may also not include the second antenna unit 12, and only using the first antenna units 11m, 11n, 11o, 11p, 11q, 11r, 11s, 11t, 11u can form an omnidirectional radiation pattern. In known antenna architectures, if an omnidirectional radiation pattern is to be generated, the antenna is designed as a three-dimensional antenna architecture perpendicular to the plane with stronger energy in the radiation pattern, that is, the plane where the antenna is located is substantially parallel to the axis with the smallest radiation energy in the radiation pattern, and there are more spatial requirements. When the antenna devices 10m, 10n, 10o, 10p, 10q, 10r, 10s, 10t, 10u do not include the second antenna unit 12, the occupied space can be smaller, and an omnidirectional radiation pattern can be formed.

[0189] In summary, the antenna device according to an embodiment of the present invention includes a first antenna unit and a second antenna unit. The first co-polarization direction generated by the first antenna unit is orthogonal to the second co-polarization direction generated by the second antenna unit. The first antenna unit includes a first structural layer disposed on a first plane and a second structural layer disposed on a second plane, and the second plane is parallel to or coincides with the first plane. The main feed-in point of the first structural layer is connected to the first transmission line segment and a part of the first antenna structure to form these first transmission paths, and these first transmission paths share at least a part of the path. The main feed-in point of the first structural layer is also connected to the second transmission line segment and another part of the first antenna structure to form these second transmission paths, and these second transmission paths share at least a part of the path. At least a part of the projection of these first antenna structures on the second plane is located outside the conductor. In the antenna device according to an embodiment of the present invention, the above configuration can provide an omnidirectional radiation pattern with dual polarization, and the above configuration enables the first transmission path to pass through the first feed-in point after extending from the main feed-in point, and then be connected to different first antenna structures from the first feed-in point, and is divided into multiple segments. Such a configuration is beneficial to impedance conversion, is easier to adjust the line position according to impedance requirements, and can leave more positions for the configuration of other electronic components to avoid interference between the electronic components and the transmission line or avoid the electronic components affecting the transmission signal.

[0190] Furthermore, the antenna device according to another embodiment of the present invention includes a first antenna unit and a second antenna unit. The first co-polarization direction generated by the first antenna unit is orthogonal to the second co-polarization direction generated by the second antenna unit. The first antenna unit includes a first structural layer disposed on a first plane and a second structural layer disposed on a second plane, and the second plane is parallel to or coincides with the first plane. The first structural layer includes two first antenna structures, and the turning directions of these two first antenna structures are opposite to each other. The second structural layer includes two second antenna structures, and the turning directions of these two second antenna structures are opposite to each other. The turning direction of each of these two second antenna structures is opposite to the turning direction of the corresponding first antenna structure. The phase difference between the two signals respectively fed into the two branch feed-in points of the two first antenna structures is between 150 degrees and 210 degrees. In the antenna device according to another embodiment of the present invention, the above configuration can still provide an omnidirectional radiation pattern when the phase difference between the fed signals is between 150 degrees and 210 degrees, can provide a more flexible circuit configuration, and the architecture of the antenna device is relatively simple, and the occupied space can also be smaller.

[0191] In the antenna device according to another embodiment of the present utility model, the antenna device includes a first antenna unit. The first antenna unit includes a first structural layer disposed on a first plane and a second structural layer disposed on a second plane, and the second plane is parallel to or coincides with the first plane. The first structural layer includes a transmission line, and the second structural layer includes a plurality of antenna structures. When the antenna device operates, these antenna structures form a radiation current in the same counterclockwise direction, or these antenna structures form a radiation current in the same clockwise direction to provide an omnidirectional radiation pattern, and the space occupied by the antenna device can be relatively small. In addition, the above configuration enables the first transmission path to extend from the main feeding point and first pass through the first feeding point, and then be connected to different first antenna structures from the first feeding point, thus being divided into multiple segments. Such a configuration is beneficial for impedance conversion, and it is easier to adjust the line position according to the impedance requirement, and more positions can be vacated for the configuration of other electronic components to avoid interference between the electronic components and the transmission line or to avoid the electronic components affecting the transmission signal.

[0192] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An antenna device, characterized in that, Comprising: A first antenna unit for generating a first radiation pattern, the first radiation pattern having a first co-polarization direction, the first antenna unit comprising: A first structural layer disposed in a first plane, the first structural layer comprising: A plurality of first antenna structures, the plurality of first antenna structures being separated from each other; A main feeding point; A first secondary feeding point; and A transmission line comprising a first transmission line segment and a second transmission line segment, the main feeding point being located between the first transmission line segment and the second transmission line segment, and the first transmission line segment being connected to a part of the plurality of first antenna structures, the second transmission line segment being connected to another part of the plurality of first antenna structures, a plurality of first transmission paths being formed from the main feeding point to the part of the first antenna structures, the plurality of first transmission paths passing through the first secondary feeding point, and a plurality of second transmission paths being formed from the main feeding point to the other part of the first antenna structures; and A second structural layer disposed in a second plane, the second plane being parallel to or coincident with the first plane, the second structural layer comprising: A conductor; wherein At least a part of the projections of the plurality of first antenna structures in the second plane surround the outside of the conductor; and A second antenna unit disposed in the first plane for generating a second radiation pattern, the second radiation pattern having a second co-polarization direction, an angle being formed between the second co-polarization direction and the first co-polarization direction, and the projection of the second antenna unit in the second plane being located inside the conductor.

2. The antenna device according to claim 1, wherein The first structural layer of the first antenna unit further comprises a second secondary feeding point, and the plurality of second transmission paths pass through the second secondary feeding point.

3. The antenna device according to claim 1, wherein The second structural layer of the first antenna unit further comprises a plurality of second antenna structures, the positions of the plurality of second antenna structures corresponding to the positions of the plurality of first antenna structures respectively, each of the plurality of first antenna structures having a first transmission portion, a first turning portion and a first radiation portion, the first turning portion being formed between the first transmission portion and the first radiation portion, the plurality of first transmission portions of the plurality of first antenna structures being connected to the transmission line, each of the plurality of second antenna structures having a second transmission portion, a second turning portion and a second radiation portion, the second turning portion being formed between the second transmission portion and the second radiation portion, the plurality of second transmission portions of the plurality of second antenna structures being connected to the conductor, the projection of each of the first transmission portions of the plurality of first antenna structures in the second plane at least partially coinciding with or being parallel to the second transmission portion of the corresponding second antenna structure, and the turning direction of each of the plurality of first antenna structures being opposite to the turning direction of the corresponding second antenna structure.

4. The antenna device according to claim 3, characterized in that, When the antenna device operates, the plurality of first antenna structures and the plurality of second antenna structures form a radiation current in the same counterclockwise direction, or the plurality of first antenna structures and the plurality of second antenna structures form a radiation current in the same clockwise direction. The first radiation pattern is an omnidirectional pattern. In the first radiation pattern, the angle between the axis with the minimum radiation energy and the normal of the first plane is greater than or equal to 0 degrees and less than or equal to 20 degrees.

5. The antenna device according to claim 3, characterized in that The first structural layer further includes a plurality of branch feeding points, each of the plurality of branch feeding points is located at the first turning portion of the corresponding first antenna structure, the phase difference of the plurality of signals respectively fed by the plurality of branch feeding points is within plus or minus 30 degrees, and the turning directions of the plurality of first antenna structures are the same.

6. The antenna device according to claim 3, characterized in that, The first structural layer further includes a plurality of branch feeding points, each of the plurality of branch feeding points is located at the first turning portion of the corresponding first antenna structure, the phase difference between a part and another part of the plurality of signals respectively fed by the plurality of branch feeding points is between 150 degrees and 210 degrees, and the turning direction of the first antenna structure corresponding to the part of the signals is opposite to the turning direction of the first antenna structure corresponding to the other part of the signals.

7. The antenna device according to claim 2, characterized in that, The first transmission line segment includes a first sub-segment, a third sub-segment and a fifth sub-segment. The first sub-segment is located between the first feeding point and the main feeding point. The first feeding point is located between the first sub-segment, the third sub-segment and the fifth sub-segment. The third sub-segment and the fifth sub-segment are respectively connected between the first feeding point and the corresponding plurality of first antenna structures. The second transmission line segment includes a second sub-segment, a fourth sub-segment and a sixth sub-segment. The second sub-segment is located between the second feeding point and the main feeding point. The second feeding point is located between the second sub-segment, the fourth sub-segment and the sixth sub-segment. The fourth sub-segment and the sixth sub-segment are respectively connected between the second feeding point and the corresponding plurality of first antenna structures. The plurality of first antenna structures include four first transmission portions, and the four first transmission portions are respectively connected to the third sub-segment at a first junction point, to the fourth sub-segment at a second junction point, to the fifth sub-segment at a third junction point and to the sixth sub-segment at a fourth junction point. The phase difference of the signal fed by the main feeding point between the first junction point and the second junction point is within plus or minus 30 degrees, and the phase difference between the third junction point and the fourth junction point is within plus or minus 30 degrees.

8. The antenna device according to claim 7, wherein The total length of the first sub-segment and the third sub-segment is the same as the total length of the second sub-segment and the fourth sub-segment, and the total length of the first sub-segment and the fifth sub-segment is the same as the total length of the second sub-segment and the sixth sub-segment.

9. The antenna device according to claim 7, characterized in that, The conductor is polygonal. The projection of the first feeding point on the second plane is located on the first side of the conductor. The projection of the second feeding point on the second plane is located on the second side of the conductor. The first side and the second side are opposite to each other. The phase difference between the signals fed at the first feeding point at the first junction point and the third junction point is within plus or minus 30 degrees, and the phase difference between the signals fed at the second feeding point at the second junction point and the fourth junction point is within plus or minus 30 degrees. Wherein the length of the third sub-segment is equal to the length of the fifth sub-segment, and the length of the fourth sub-segment is equal to the length of the sixth sub-segment.

10. The antenna device according to claim 2, characterized in that, The first transmission line segment includes a first sub-segment and a third sub-segment. The first sub-segment is located between the first feeding point and the main feeding point. The first feeding point is located between the first sub-segment, the third sub-segment and the corresponding first antenna structure. The second transmission line segment includes a second sub-segment and a fourth sub-segment. The second sub-segment is located between the second feeding point and the main feeding point. The second feeding point is located between the second sub-segment, the fourth sub-segment and the corresponding first antenna structure. The plurality of first antenna structures includes four first transmission parts, and the four first transmission parts are respectively connected to both ends of the third sub-segment at the first junction point and the third junction point, and are connected to both ends of the fourth sub-segment at the second junction point and the fourth junction point. The phase difference between the signals fed at the main feeding point at the first junction point and the third junction point is between 150 degrees and 210 degrees. The phase difference between the signals fed at the main feeding point at the second junction point and the fourth junction point is between 150 degrees and 210 degrees. Wherein the total length of the first sub-segment and the third sub-segment is the same as the total length of the second sub-segment and the fourth sub-segment.

11. The antenna device according to claim 3, characterized in that, There are at least two bends between the first feeding point and the first radiation part.

12. The antenna device according to claim 1, characterized in that, The first transmission line segment includes a first branch line segment and a second branch line segment. The first branch line segment connects the main feeding point and the corresponding first antenna structure. The second branch line segment connects the main feeding point and the corresponding first antenna structure. The first branch line segment and the second branch line segment do not overlap with each other.

13. The antenna device according to claim 1, characterized in that, The second antenna unit includes a monopole antenna, a patch antenna or a dielectric resonator antenna.

14. An antenna device, characterized in that, Including: A first antenna unit for generating a first radiation pattern, the first radiation pattern having a first co-polarization direction. The first antenna unit includes: A first structural layer disposed on a first plane. The first structural layer includes: Two first antenna structures, the two first antenna structures are separated from each other. Each of the two first antenna structures has a first transmission part, a first turning part and a first radiation part. The first turning part is formed between the first transmission part and the first radiation part. The turning directions of the two first antenna structures are opposite to each other; A transmission line connecting the first transmission parts of each of the two first antenna structures; A main feeding point located on the transmission line; and Two branch feeding points, each of the two branch feeding points being located at the first turning portion of the corresponding first antenna structure, and the phase difference between the two signals respectively fed by the two branch feeding points being between 150 degrees and 210 degrees; and A second structural layer disposed on a second plane, the second plane being parallel to or coincident with the first plane, the second structural layer including: Two second antenna structures, the positions of the two second antenna structures corresponding to the positions of the two first antenna structures respectively, each of the two second antenna structures having a second transmission portion, a second turning portion and a second radiation portion, the second turning portion being formed between the second transmission portion and the second radiation portion, the turning directions of the two second antenna structures being opposite to each other, and the turning direction of each of the two second antenna structures being opposite to the turning direction of the corresponding first antenna structure; and A conductor connecting the second transmission portions of each of the two second antenna structures; and A second antenna unit disposed on the first plane for generating a second radiation pattern, the second radiation pattern having a second co-polarization direction, an included angle being formed between the second co-polarization direction and the first co-polarization direction, and the projection of the second antenna unit on the second plane being located within the conductor.

15. The antenna device according to claim 14, characterized in that, When the antenna device operates, the two first antenna structures and the two second antenna structures form radiation currents in the same counterclockwise direction, or the two first antenna structures and the two second antenna structures form radiation currents in the same clockwise direction, and the first radiation pattern is an omnidirectional pattern.

16. An antenna device, characterized in that, Comprising: A first antenna unit for generating a first radiation pattern, the first radiation pattern having a first co-polarization direction, the first antenna unit including: A first structural layer disposed on a first plane, the first structural layer including: A main feeding point; A first secondary feeding point; and A transmission line including a first transmission line segment and a second transmission line segment, the main feeding point being located between the first transmission line segment and the second transmission line segment; and A second structural layer disposed on a second plane, the second plane being parallel to or coincident with the first plane, the second structural layer including: A plurality of antenna structures separated from each other; and A conductor; wherein the plurality of antenna structures are connected to the outside of the conductor, and a plurality of openings are formed in the conductor and respectively extend to the plurality of antenna structures, and the transmission line straddles the plurality of openings; Wherein, the first transmission line segment is connected to a part of the plurality of antenna structures, the second transmission line segment is connected to another part of the plurality of antenna structures, a plurality of first transmission paths are formed from the main feeding point to the part of the antenna structures, the plurality of first transmission paths passing through the first secondary feeding point, and a plurality of second transmission paths are formed from the main feeding point to the another part of the antenna structures.

17. The antenna device according to claim 16, characterized in that, It further includes a second antenna unit disposed in the first plane for generating a second radiation pattern having a second co-polarization direction, an angle being formed between the second co-polarization direction and the first co-polarization direction, and the projection of the second antenna unit in the second plane being located within the conductor.

18. The antenna device according to claim 16, characterized in that, When the antenna device operates, the plurality of antenna structures form radiation currents in the same counterclockwise direction, or the plurality of antenna structures form radiation currents in the same clockwise direction. The first radiation pattern is an omnidirectional pattern, and in the first radiation pattern, the angle between the axis with the minimum radiation energy and the normal of the first plane is greater than or equal to 0 degree and less than or equal to 20 degrees.

19. The antenna device according to claim 16, characterized in that, The transmission line spans across the plurality of openings to form a balun feeding structure.

20. The antenna device according to claim 1, 14 or 16, characterized in that, It further includes a reflector, wherein the first structural layer is located between the second structural layer and the reflector, and the distance between the reflector and the first structural layer is greater than or equal to 0.1 air wavelength and less than or equal to 1 air wavelength; or the second structural layer is located between the first structural layer and the reflector, and the distance between the reflector and the second structural layer is greater than or equal to 0.1 air wavelength and less than or equal to 1 air wavelength.

21. The antenna device according to claim 1, 14 or 17, characterized in that, The second co-polarization direction and the first co-polarization direction are orthogonal to each other.

Images