Antenna device and communication apparatus

Abstract

An antenna assembly and communication device are disclosed. The antenna assembly includes a base, a stand, an arm, and a first radiating portion. The stand is connected to and stands on the base; the arm includes a first arm and a second arm, which are connected to the stand; the first radiating portion includes a first portion and a second portion that are symmetrical to each other, the first portion of the first radiating portion being connected to the first arm, and the second portion of the first radiating portion being connected to the second arm. The arm is connected to the base at different positions on the stand such that there is a distance between the arm and the base in a direction perpendicular to the base.

Description

[Technical Field]

[0001] This disclosure relates to antenna devices and communication equipment, and in particular to an antenna device and communication equipment capable of supporting multiple frequency bands. [Previous Technology]

[0002] In recent years, in addition to miniaturization, wireless communication products have also required antennas to cover multiple frequency bands to support communication at different frequencies. Given the limited space in wireless communication products, achieving multi-band coverage has become a challenge. Furthermore, manufacturers also impose requirements on antenna gain, beamwidth, directivity, and other radiation pattern specifications, further complicating antenna design. Previously, high-gain directional antennas were mostly designed for a single frequency band; however, with the development of wireless communication technology, there is a need for antennas that are small in size, have a directional radiation pattern, a certain beamwidth, and support multiple frequency bands. [Summary of the Invention]

[0003] An antenna device includes: a base; an upright member connected to and standing on the base; an arm including a first arm and a second arm connected to the upright member; and a first radiating portion including a first portion and a second portion symmetrical to each other, the first portion of the first radiating portion being connected to the first arm, and the second portion of the first radiating portion being connected to the second arm; wherein the arm and the base are connected to the upright member at different positions such that there is a distance between the arm and the base in a direction perpendicular to the base.

[0004] A communication device includes: a base plate; and an antenna assembly including: a base mounted on the base plate; an upright member connected to and standing on the base; an arm including a first arm and a second arm connected to the upright member; and a first radiating portion including a first portion and a second portion symmetrical to each other, the first portion of the first radiating portion being connected to the first arm, and the second portion of the first radiating portion being connected to the second arm; wherein the arm and the base are connected to different positions on the upright member such that there is a distance between the arm and the base in a direction perpendicular to the base.

[0005] To further understand the features and technical content of this disclosure, please refer to the following detailed description and figures related to this disclosure. However, the figures provided are for reference and illustration only and are not intended to limit the content of this disclosure.

Implementation Method

[0013] Those skilled in the art can understand the advantages and effects of this disclosure from the content disclosed in this specification. This disclosure can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this disclosure. In addition, the drawings in this disclosure are only simple illustrations and are not depictions based on actual dimensions, as stated in advance. The following embodiments will further describe the relevant technical content of this disclosure in detail, but the disclosed content is not intended to limit the scope of protection of this disclosure. In addition, it should be understood that although terms such as "first," "second," and "third" may be used herein to describe various elements, these elements should not be limited by these terms. These terms are mainly used to distinguish one element from another.

[0014] Figures 1A, 1B, and 1C show schematic diagrams of the antenna device 100 according to the first embodiment of the present disclosure, wherein Figures 1A and 1B present different viewpoints of the antenna device 100, and Figure 1C shows the relative position between the antenna device 100 and the top plate 118. Figures 1A, 1B, and 1C can be referenced together.

[0015] Antenna device 100 can be considered as a result of a variation derived from the concept of a dipole antenna. Antenna device 100 can simultaneously support multi-band signal transmission, provide a high-gain directional radiation pattern, and cover a wide frequency band. For example, in some embodiments, antenna device 100 can simultaneously support Wi-Fi operation at 2.4 GHz, 5 GHz, and 6 GHz. Antenna device 100 can also adjust the beamwidth of the antenna radiated signal according to product specifications.

[0016] The antenna device 100 includes a first radiating part 102, a second radiating part 104, an arm 106, a stand 112 and a base 116.

[0017] The first radiating portion 102 includes a first portion 102a and a second portion 102b, and the second radiating portion 104 includes a first portion 104a and a second portion 104b. The first portions 102a and 102b of the first radiating portion 102 may be symmetrical to each other, and the first portions 104a and 104b of the second radiating portion 104 may be symmetrical to each other. The arm portion 106 includes a first arm portion 106a and a second arm portion 106b. The first portion 102a of the first radiating portion 102 and the first portion 104a of the second radiating portion 104 are connected to the first arm portion 106a. The second portions 102b of the first radiating portion 102 and the second portion 104b of the second radiating portion 104 are connected to the second arm portion 106b. The first portion 102a of the first radiating portion 102 and the first portion 104a of the second radiating portion 104 have a first distance G1 in the direction in which they are connected to each other via the first arm portion 106a. A second spacing G2 exists between the second portion 102b of the first radiating portion 102 and the second portion 104b of the second radiating portion 104 in the direction in which they are connected to each other via the second arm portion 106b. In this embodiment, the first spacing G1 and the second spacing G2 have the same value. The first spacing G1 and the second spacing G2 between the first radiating portion 102 and the second radiating portion 104 can reduce the mutual interference between the first radiating portion 102 and the second radiating portion 104, and allow the antenna device 100 to achieve a good directional radiation pattern. The influence of different values ​​of the first spacing G1 and the second spacing G2 on the radiation pattern of the antenna device 100 will be described in Figure 3 later.

[0018] The first portion 104a and the second portion 104b of the second radiating portion 104 can be partially cut to bring the second radiating portion 104 closer to the first radiating portion 102, thereby reducing the space occupied by the antenna device 100. The cut shape of the second radiating portion 104 can match the first radiating portion 102. For example, as shown in FIG1A, if the first radiating portion 102 is rectangular, then the cut portion of the second radiating portion 104 can be a corresponding rectangle.

[0019] The base 116 of the antenna device 100 can be fixed to the base plate 110; for example, the base 116 may have holes to allow screws or other fasteners to pass through to mount the antenna device 100 onto the base plate 110. The stand 112 is connected to and stands on the base 116. In this embodiment, the stand 112 is perpendicular to the base 116, i.e., there is a 90-degree angle between the stand 112 and the base 116; however, in some variations, the stand 112 and the base 116 may also form angles other than 90 degrees. In other variations, the stand 112 may be directly fixed to the base plate 110 without passing through the base 116, in which case the base plate 110 can be considered as the base of the antenna device 100.

[0020] Arm 106 is connected to stand 112, and more specifically, first arm 106a and second arm 106b are each connected to stand 112. Stand 112 has a length H1. Arm 106 and base 116 are connected to stand 112 at different positions such that in a direction perpendicular to base 116, there is a distance between arm 106 and base 116, which may be the same as or different from the length H1 of stand 112. In this embodiment, base 116 and stand 112 are perpendicular to each other, base 116 and arm 106 are parallel, and arm 106 and base 116 are respectively connected to opposite ends of stand 112, so the distance between arm 106 and base 116 is equal to the length H1 of stand 112. Furthermore, since base 116 can be designed to be flat, the distance between arm 106 and base plate 110 can also be approximately the length H1. In some variations, the arm 106 may not be connected to the end of the stand 112; in this case, the distance between the arm 106 and the base 116 is not equal to the length H1 of the stand 112.

[0021] The arm 106 is cantilevered on the stand 112. Here, "cantilevered" generally refers to a component being connected to another component at one end (fixed end) while the other end (open end) is suspended. For example, as shown in FIG1A, the arm 106 is elevated by the stand 112 so that its vertical position is higher than the base 116. The arm 106 is connected to the stand 112 at its fixed end, and extends from the fixed end in a direction away from the stand 112, such that the open end relative to the fixed end is suspended. Similarly, the first portion 102a of the first radiating portion 102 and the first portion 104a of the second radiating portion 104 are suspended on the first arm 106a, and the second portion 102b of the first radiating portion 102 and the second portion 104b of the second radiating portion 104 are suspended on the second arm 106b. Because the support member 112 elevates the arm 106, the first radiating part 102, and the second radiating part 104, there is a distance between the first radiating part 102, the second radiating part 104, and the base plate 110. This reduces the influence of the base plate 110 on the first radiating part 102 and the second radiating part 104, allowing them to produce a broadband effect. The influence of the distance between the first radiating part 102, the second radiating part 104, and the base plate 110 on the radiated signal will be described in Figure 4 later.

[0022] The stand 112 has a slot 114 with a length L1. In this embodiment, the first arm 106a and the second arm 106b are parallel to each other, and the gap between the first arm 106a and the second arm 106b is equal to the width W1 of the slot 114. The slot 114 affects the impedance matching of the antenna device 100, and thus affects the antenna signal; this will be described later in FIG5.

[0023] The first radiating part 102 and the second radiating part 104 of the antenna device 100 can support signals in different frequency bands. Specifically, the first radiating part 102 can operate in a first frequency band, and the second radiating part 104 can operate in a second frequency band different from the first frequency band. The total length of the first radiating part 102 is approximately equal to 0.5 times the wavelength corresponding to the first frequency band (hereinafter referred to as 0.5 times the wavelength of the first frequency band); for example, the lengths of the first portion 102a and the second portion 102b of the first radiating part 102 can each be approximately 0.25 times the wavelength of the first frequency band, such that the total length of the first portion 102a and the second portion 102b of the first radiating part 102 is approximately 0.5 times the wavelength of the first frequency band. Similarly, the total length of the second radiating portion 104 is approximately equal to 0.5 times the wavelength of the second frequency band; for example, the lengths of the first portion 104a and the second portion 104b of the second radiating portion 104 may each be approximately 0.25 times the wavelength of the second frequency band, such that the total length of the first portion 104a and the second portion 104b of the second radiating portion 104 is approximately 0.5 times the wavelength of the second frequency band. In some embodiments, the first radiating portion 102 may support signals in the 5 GHz and 6 GHz frequency bands, while the second radiating portion 104 may support signals in the 2.4 GHz frequency band. In some variations, the lengths of the first radiating portion 102 and the second radiating portion 104 may be adjusted to support signals in other frequency bands.

[0024] The first portion 104a and the second portion 104b of the second radiating portion 104 may each have bent portions 108a and 108b, respectively, wherein the bent portions 108a and 108b are bent into an L-shape at one end of the first portion 104a and the second portion 104b of the second radiating portion 104, which can reduce the lateral space of the antenna device 100. For example, the antenna device 100 may be installed in a communication device; when the required size of the communication device is small, the ends of the first portion 104a and the second portion 104b of the second radiating portion 104 can be bent to form bent portions 108a and 108b, so that the antenna device 100 can be accommodated in a small space. In some variations, the ends of the first portion 102a and the second portion 102b of the first radiating portion 102 may also be bent in a similar way. If the space for the communication equipment accommodating the antenna device 100 is large enough, the ends of the first part 104a and the second part 104b of the second radiating part 104 may not need to be bent.

[0025] The antenna device 100 may further include a feed terminal 120 and a ground terminal 122 for signal input, wherein the ground terminal 122 is connected to the first arm 106a and the feed terminal 120 is connected to the second arm 106b. In some variations, the ground terminal 122 may be connected to the second arm 106b and the feed terminal 120 may be connected to the first arm 106a. Furthermore, although Figures 1A to 1C show the feed terminal 120 and the ground terminal 122 as staggered, the feed terminal 120 and the ground terminal 122 may also be arranged to face each other. The antenna device 100 may further include a first matching protrusion 124a and a second matching protrusion 124b for adjusting impedance matching, wherein the first matching protrusion 124a is connected to the first arm 106a and the second matching protrusion 124b is connected to the second arm 106b. Figures 1A to 1C show that the feed terminal 120, ground terminal 122, first matching protrusion 124a and second matching protrusion 124b are rectangular, but the feed terminal 120, ground terminal 122, first matching protrusion 124a and second matching protrusion 124b can also be set to other shapes.

[0026] As shown in Figure 1B, the first radiating part 102 and the second radiating part 104 can be bent toward the base plate 110. Specifically, the first portion 102a and the second portion 102b of the first radiating part 102 each form a first angle A1 with the Z-axis perpendicular to the base 116 (or the base plate 110), and the first portion 104a and the second portion 104b of the second radiating part 104 form a second angle A2 with the Z-axis. The first angle A1 can be between 30 degrees and 90 degrees, and the second angle A2 can be between 30 degrees and 90 degrees. The first angle A1 and the second angle A2 can be the same or different. The beamwidth of the antenna signal can be affected by adjusting the first angle A1 and the second angle A2, which will be described in Figure 6 later.

[0027] The antenna device 100 can be disposed in a communication device such as an access point device or a router, wherein the communication device may include a base plate 110 and a top plate 118 (refer to FIG. 1C), and there may be a distance D1 between the antenna device 100 and the top plate 118. In this embodiment, the arm 106 of the antenna device 100 is parallel to the top plate 118 and is closest to the top plate 118, so the distance D1 is also equal to the distance between the arm 106 and the top plate 118. In some variations, if the arm 106 is not parallel to the top plate 118, or if there are other elements other than the arm 106 that are closer to the top plate 118, then the distance D1 is the minimum distance between the antenna device 100 and the top plate 118. The distance D1 between the antenna device 100 and the top plate 118 affects the peak gain value of the antenna signal, which will be described later in FIG. 7.

[0028] Figures 2A, 2B, and 2C show schematic diagrams of the antenna device 200 according to the second embodiment of the present disclosure, wherein Figures 2A and 2B present different viewpoints of the antenna device 200, and Figure 2C shows the relative position between the antenna device 200 and the top plate 218. Figures 2A, 2B, and 2C can be referenced together.

[0029] The antenna device 200 can be considered as a result of a variation derived from the concept of a dipole antenna. The antenna device 200 can provide a high-gain directional radiation pattern and can cover a wide frequency band; for example, in some embodiments, the antenna device 200 can simultaneously support Wi-Fi operation at 5 GHz and 6 GHz. The antenna device 200 can also adjust the beamwidth of the radiated signal according to product specifications.

[0030] The antenna device 200 includes a first radiating portion 202, an arm portion 206, a stand 212, and a base 216. The first radiating portion 202 of the antenna device 200 is similar to the first radiating portion 102 of the antenna device 100. The first radiating portion 202 includes a first portion 202a and a second portion 202b, and the first portion 202a and the second portion 202b of the first radiating portion 202 are symmetrical to each other. The arm portion 206 includes a first arm portion 206a and a second arm portion 206b. The first portion 202a of the first radiating portion 202 is connected to the first arm portion 206a, and the second portion 202b of the first radiating portion 202 is connected to the second arm portion 206b.

[0031] The base 216 of the antenna device 200 can be fixed to the base plate 210; for example, the base 216 may have holes to allow screws or other fasteners to pass through for mounting the antenna device 200 onto the base plate 210. The stand 212 is connected to and stands on the base 216. In this embodiment, the stand 212 is perpendicular to the base 216, i.e., there is a 90-degree angle between the stand 212 and the base 216; however, in some variations, the stand 212 and the base 216 may also form angles other than 90 degrees. In other variations, the stand 212 may be directly fixed to the base plate 210 without passing through the base 216, in which case the base plate 210 can be considered as the base of the antenna device 200.

[0032] Arm 206 is connected to stand 212, and more specifically, first arm 206a and second arm 206b are each connected to stand 212. Stand 212 has a length H2. Arm 206 and base 216 are connected to stand 212 at different positions such that there is a distance between arm 206 and base 216 in a direction perpendicular to base 216, which may be the same as or different from the length H2 of stand 212. In this embodiment, base 216 is perpendicular to stand 212, base 216 is parallel to arm 206, and arm 206 and base 216 are respectively connected to opposite ends of stand 212, so the distance between arm 206 and base 216 is equal to the length H2 of stand 212. Furthermore, since base 216 can be designed to be flat, the distance between arm 206 and base plate 210 can also approximate the length H2. In some variations, the arm 206 may not be connected to the end of the stand 212; in this case, the distance between the arm 206 and the base 216 is not equal to the length H2 of the stand 212.

[0033] The arm 206 can be suspended on the stand 212. As shown in FIG2A, the arm 206 is raised by the stand 212 so that its vertical position is higher than that of the base 216. The arm 206 is connected to the stand 212 at a fixed end, and the arm 206 extends from the fixed end in a direction away from the stand 212, so that the open end opposite to the fixed end is suspended. Similarly, the first part 202a of the first radiating part 202 is suspended on the first arm 206a, and the second part 202b of the first radiating part 202 is suspended on the second arm 206b. Since the stand 212 raises the arm 206 and the first radiating part 202, there is a distance between the first radiating part 202 and the base plate 210. This reduces the influence of the base plate 210 on the first radiating part 202, allowing the first radiating part 202 to produce a broadband effect.

[0034] The support member 212 has a slot 214 with a length L2. In this embodiment, the first arm 206a and the second arm 206b are parallel to each other, and the gap between the first arm 206a and the second arm 206b is equal to the width W2 of the slot 214. The slot 214 affects the impedance matching of the antenna device 200, and thus affects the antenna signal.

[0035] The first radiating portion 202 of the antenna device 200 is operable in a first frequency band, and the total length of the first radiating portion 202 is approximately equal to 0.5 times the wavelength corresponding to the first frequency band (hereinafter referred to as 0.5 times the wavelength of the first frequency band); for example, the lengths of the first portion 202a and the second portion 202b of the first radiating portion 202 may each be approximately 0.25 times the wavelength of the first frequency band, such that the total length of the first portion 202a and the second portion 202b of the first radiating portion 202 is approximately 0.5 times the wavelength of the first frequency band. In some embodiments, the first radiating portion 202 may support signals in the 5 GHz and 6 GHz frequency bands. In some variations, the length of the first radiating portion 202 may be adjusted to support signals in other frequency bands.

[0036] The antenna device 200 may further include a feed terminal 220 and a ground terminal 222 for signal input, wherein the ground terminal 222 is connected to the first arm 206a and the feed terminal 220 is connected to the second arm 206b. In some variations, the ground terminal 222 may be connected to the second arm 206b and the feed terminal 220 may be connected to the first arm 206a. Furthermore, although Figures 2A to 2C show the feed terminal 220 and the ground terminal 222 as staggered, the feed terminal 220 and the ground terminal 222 may also be arranged facing each other. The feed terminal 220 and the ground terminal 222 are shown as rectangular in Figures 2A to 2C, but the feed terminal 220 and the ground terminal 222 may also be other shapes.

[0037] Compared with the antenna device 100 of the first embodiment, the antenna device 200 of the second embodiment does not include a matching protrusion; however, the matching protrusion can be provided on the antenna device 200 to perform impedance matching as required, in accordance with the method of the antenna device 100.

[0038] As shown in FIG2B, the first portion 202a and the second portion 202b of the first radiating portion 202 are respectively angled at a third angle A3 with respect to the Z-axis perpendicular to the base 216, wherein the third angle A3 may be between 30 degrees and 90 degrees. The beamwidth of the antenna signal can be affected by adjusting the third angle A3. In some embodiments, the third angle A3 of FIG2B corresponds to the first angle A1 of FIG1B.

[0039] The antenna device 200 can be disposed in a communication device such as an access point device or a router, wherein the communication device may include a base plate 210 and a top plate 218 (refer to FIG. 2C), and there may be a distance D2 between the antenna device 200 and the top plate 218. In this embodiment, the arm 206 of the antenna device 200 is parallel to the top plate 218 and is closest to the top plate 218, so the distance D2 is also equal to the distance between the arm 206 and the top plate 218. In some variations, if the arm 206 is not parallel to the top plate 218, or if there are other elements other than the arm 206 that are closer to the top plate 218, then the distance D2 is the minimum distance between the antenna device 200 and the top plate 218. The distance D2 between the antenna device 200 and the top plate 218 affects the peak gain value of the antenna signal.

[0040] FIG3 shows the effect of the spacing between the first radiating portion 102 and the second radiating portion 104 of the antenna device 100 on the antenna radiation pattern according to some embodiments of the present disclosure. As shown in FIG1A, the first portion 102a of the first radiating portion 102 and the first portion 104a of the second radiating portion 104 have a first spacing G1 in the direction in which they are connected to each other via the first arm 106a; the second portion 102b of the first radiating portion 102 and the second portion 104b of the second radiating portion 104 have a second spacing G2 in the direction in which they are connected to each other via the second arm 106b. Since the first spacing G1 and the second spacing G2 are the same in the first embodiment, the following description will only refer to the first spacing G1.

[0041] The radiation pattern diagram in Figure 3 shows the antenna radiation intensity (in dB) in the elevation plane. Radiation pattern 300 was measured with a first spacing G1 of 3 mm, while radiation pattern 302 was measured with a first spacing G1 of 6 mm. As can be seen from Figure 3, radiation pattern 302 is directional in the direction of approximately 0 degrees, while radiation pattern 300 not only lacks obvious directionality in the direction of 0 degrees, but also produces a null point 301, resulting in poor signal gain near the 0-degree direction. Therefore, if the design requires the antenna device 100 to achieve directional radiation pattern, radiation pattern 302 is preferable. When the first spacing G1 is too small, it is easy for the first radiating part 102 and the second radiating part 104 to interfere with each other. According to the test results, a better radiation directivity can be achieved when the first spacing G1 is at least 5 mm.

[0042] Figure 4 shows the effect of the length H1 of the stand 112 of the antenna device 100 on the voltage standing wave ratio (VSWR) of the antenna signal according to some embodiments of the present disclosure. VSWR can be used to evaluate the reflection situation during antenna signal transmission. When VSWR is 1, it means that the antenna signal has no reflection, so a VSWR close to 1 is preferred. Curve 400 is the VSWR measured when the length H1 is 8 mm, curve 402 is the VSWR measured when the length H1 is 10 mm, and curve 404 is the VSWR measured when the length H1 is 12 mm. The antenna device 100 is configured to operate in the frequency bands of 2.4 GHz, 5 GHz, and 6 GHz. As can be seen from Figure 4, the VSWR of curve 400 in the aforementioned frequency bands is larger than that of curves 402 and 404, and the VSWR of curves 402 and 404 in the aforementioned frequency bands is closer to 1. Therefore, a length H1 of 10 mm or more is preferred. As previously mentioned, a larger length H1 can reduce the impact of the base plate 110 on the first radiating part 102 and the second radiating part 104; however, in practice, the antenna device 100 may be limited by space when installed in communication equipment, so the length H1 may have an upper limit. Choosing a length H1 between 10 mm and 12 mm can maintain a low VSWR without occupying too much space, thus achieving a good balance between VSWR and space constraints. Although the curve in Figure 4 was measured with the antenna device 100, the antenna device 200 also has similar characteristics. That is, different sizes of the length H2 of the stand 212 of the antenna device 200 will have a similar effect on the signal of the antenna device 200 as shown in Figure 4, and the length H2 can be selected to be 10 mm or more to produce better VSWR in the 5 GHz and 6 GHz bands.

[0043] Figure 5 illustrates the effect of the length L1 of the slot 114 of the antenna device 100 on the VSWR of the antenna signal according to some embodiments of this disclosure. Curve 500 is the VSWR measured when the length L1 is 1 mm, curve 502 is the VSWR measured when the length L1 is 3 mm, and curve 504 is the VSWR measured when the length L1 is 5 mm. As can be seen from Figure 5, in the 5 GHz and 6 GHz frequency bands, the VSWR of curve 500 is larger, while the VSWR of curve 504 is smaller and closest to 1. Based on the measurement results in Figure 5, the length L1 of the slot 114 can be selected to be at least 5 mm to achieve good impedance matching of the antenna device 100, thereby reducing the VSWR. Although the curve in Figure 5 was measured using antenna device 100, antenna device 200 also has similar characteristics. That is, different sizes of the length L2 of the slot 214 of antenna device 200 will have a similar effect on the signal of antenna device 200 as shown in Figure 5, and the length L2 can be selected to be 5 mm or more to achieve better VSWR in the 5 GHz and 6 GHz frequency bands.

[0044] Figure 6 shows, according to some embodiments of the present disclosure, the effect of a first angle A1 formed by the bending of the first radiating part 102 of the antenna device 100 on the beamwidth of the antenna signal. When the first angle A1 changes, it affects the distance between the first radiating part 102 and the base plate 110, thereby affecting the beamwidth of the first radiating part 102. Radiation pattern 600 is the result measured when the first angle A1 is 90 degrees, radiation pattern 602 is the result measured when the first angle A1 is 60 degrees, and radiation pattern 604 is the result measured when the first angle A1 is 30 degrees. As shown in Figure 6, radiation pattern 600 has the narrowest beamwidth, while radiation pattern 604 has the widest beamwidth. In practice, a suitable first angle A1 can be selected according to requirements. Although the radiation field pattern in Figure 6 was measured using the first angle A1, the second angle A2 and the third angle A3 also have similar characteristics to those in Figure 6. Therefore, the second angle A2 and the third angle A3 can be selected to be between 30 degrees and 90 degrees to adjust the beamwidth of the signals from the second radiating section 104 and the first radiating section 202.

[0045] Figure 7 illustrates the effect of the distance D1 between the antenna device 100 and the top plate 118 on the peak gain, according to some embodiments of this disclosure. Curve 700 shows the peak gain measured at a distance D1 of 2 mm, curve 702 shows the peak gain measured at a distance D1 of 6 mm, curve 704 shows the peak gain measured at a distance D1 of 10 mm, and curve 706 shows the peak gain measured at a distance D1 of 12 mm. When the antenna device 100 is further away from the top plate 118, the influence of the top plate 118 on the antenna device 100 can be reduced, thereby improving the peak gain. Therefore, it can be seen from Figure 7 that in the 5 GHz and 6 GHz frequency bands, the peak gain increases with the increase of distance D1. However, in practice, the installation of the antenna device 100 in communication equipment may be limited by space, so the distance D1 may have an upper limit. Choosing a distance D1 between 6 mm and 12 mm, such as 6 mm, allows for maintaining high peak gain without taking up too much space, thus achieving a good balance between peak gain and space constraints. Although the curve in Figure 7 was measured using antenna device 100, antenna device 200 also exhibits similar characteristics. That is, different distances D2 between antenna device 200 and top plate 218 will have a similar effect on the signal of antenna device 200 as shown in Figure 7, and distance D2 can be chosen between 6 mm and 12 mm, such as 6 mm, to achieve better peak gain in the 5 GHz and 6 GHz frequency bands.

[0046] The scope of the patent application of this disclosure is not limited to the above content. Therefore, all equivalent technical changes made using the description and drawings of this disclosure are included in the scope of the patent application of this disclosure. [Simplified Explanation of the Diagram]

[0006] Figures 1A, 1B and 1C show schematic diagrams of an antenna device according to a first embodiment of the present disclosure, wherein Figures 1A and 1B present different viewpoints of the antenna device, and Figure 1C shows the relative position of the antenna device and the top plate.

[0007] Figures 2A, 2B and 2C show schematic diagrams of the antenna device according to the second embodiment of the present disclosure, wherein Figures 2A and 2B present different perspectives of the antenna device, and Figure 2C shows the relative position between the antenna device and the top plate.

[0008] Figure 3 shows the effect of the spacing between the first radiating part and the second radiating part of the antenna device on the antenna radiation pattern according to some embodiments of the present disclosure.

[0009] Figure 4 shows the effect of the length of the antenna assembly stand on the VSWR of the antenna signal according to some embodiments of the present disclosure.

[0010] Figure 5 shows the effect of the length of the slot of the antenna device on the VSWR of the antenna signal according to some embodiments of the present disclosure.

[0011] Figure 6 shows the effect of the bending angle of the first radiating part of the antenna device on the beamwidth of the antenna signal according to some embodiments of the present disclosure.

[0012] Figure 7 shows the effect of the distance between the antenna device and the top plate on the peak gain value according to some embodiments of the present disclosure.

Claims

1. An antenna device, comprising: A base; One stand connects to and stands on the base; A slot is located in the upright component; An arm portion includes a first arm portion and a second arm portion connected to the stand; and a first radiating portion includes a first portion and a second portion symmetrical to each other, the first portion of the first radiating portion being connected to the first arm portion, and the second portion of the first radiating portion being connected to the second arm portion; wherein the arm portion and the base are connected to the stand at different positions, such that there is a distance between the arm portion and the base in a direction perpendicular to the base.

2. The antenna device as claimed in claim 1, further comprising a second radiating portion, the second radiating portion comprising a first portion and a second portion symmetrically arranged with respect to each other, the first portion of the second radiating portion being connected to the first arm portion, and the second portion of the second radiating portion being connected to the second arm portion.

3. The antenna arrangement as described in claim 2, wherein: The first portion of the first radiating portion and the first portion of the second radiating portion have a first distance between them in a direction in which they are connected to each other via the first arm; and the second portion of the first radiating portion and the second portion of the second radiating portion have a second distance between them in a direction in which they are connected to each other via the second arm.

4. The antenna device as claimed in claim 3, wherein the first spacing and the second spacing are each 5 millimeters (mm) or more.

5. The antenna device as claimed in claim 2, wherein the first portion and the second portion of the second radiating portion each include a bent portion, the bent portions being bent into an L-shape at one end of the first portion and the second portion of the second radiating portion, respectively.

6. The antenna device as claimed in claim 1, wherein in the direction perpendicular to the base, the length of the stand is 10 mm or more, and the length of the slot is 5 mm or more.

7. The antenna device as claimed in claim 1, wherein the first arm and the second arm are parallel to each other, and a gap between the first arm and the second arm is equal to the width of the slot.

8. The antenna arrangement as described in claim 1, wherein: The first arm and the second arm are suspended from the stand; the first portion of the first radiating part is suspended from the first arm; and the second portion of the first radiating part is suspended from the second arm.

9. The antenna device as claimed in claim 1, wherein the first portion and the second portion of the first radiating portion each form a first angle with a Z-axis perpendicular to the base, the first angle being between 30 degrees and 90 degrees.

10. The antenna device as claimed in claim 2, wherein the first portion and the second portion of the second radiating portion each form a second angle with a Z-axis perpendicular to the base, the second angle being between 30 degrees and 90 degrees.

11. The antenna device as claimed in claim 1, further comprising a ground terminal and a feed terminal, wherein the ground terminal is connected to the first arm and the feed terminal is connected to the second arm.

12. The antenna device as claimed in claim 1, further comprising a first matching protrusion and a second matching protrusion for adjusting impedance matching, wherein the first matching protrusion is connected to the first arm and the second matching protrusion is connected to the second arm.

13. The antenna arrangement as described in claim 2, wherein: The first radiating element is operable in a first frequency band; and the second radiating element is operable in a second frequency band different from the first frequency band.

14. The antenna arrangement as described in claim 13, wherein: The total length of the first radiating part is approximately equal to 0.5 times the wavelength corresponding to the first frequency band; and the total length of the second radiating part is approximately equal to 0.5 times the wavelength corresponding to the second frequency band.

15. A communication device, comprising: One base plate; And an antenna device, comprising: a base mounted on a base plate; an upright member connected to and standing on the base; a slot located in the upright member; an arm including a first arm and a second arm connected to the upright member; and a first radiating portion including a first portion and a second portion symmetrically arranged, the first portion of the first radiating portion being connected to the first arm, and the second portion of the first radiating portion being connected to the second arm; wherein the arm and the base are connected to the upright member at different positions such that there is a distance between the arm and the base in a direction perpendicular to the base.

16. The communication device as claimed in claim 15 further includes a top plate located above the antenna device, and the distance between the top plate and the antenna device is 6 millimeters (mm) or more.

17. The communication device as claimed in claim 15, further comprising a second radiating portion including a first portion and a second portion symmetrically arranged with respect to each other, the first portion of the second radiating portion being connected to the first arm portion, and the second portion of the second radiating portion being connected to the second arm portion.

18. The communication device as claimed in claim 17, wherein the first radiating portion forms a first angle with a Z-axis perpendicular to the base, and the second radiating portion forms a second angle with the Z-axis, the first angle being between 30 degrees and 90 degrees, and the second angle being between 30 degrees and 90 degrees.

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