Multiband antenna

Abstract

The present invention relates to a multi-band antenna which, in use, is connected to a host conductor, wherein: the multi-band antenna extends longer in a first direction; the multi-band antenna has a conductor body portion and a ground terminal; the conductor body portion extends in a horizontal plane defined by the first direction and a second direction perpendicular to the first direction; the conductor body portion is formed with an opening and a slot; the slot extends longer in the first direction; the conductor body portion has a first short edge, a second short edge, a first long edge, and a second long edge; the first short edge and the second short edge are located at opposite ends of the conductor body portion in the first direction, respectively; the first long edge and the second long edge are located at opposite ends of the conductor body portion in the second direction, respectively; the opening is formed at the first short edge and connects the slot with an outside of the conductor body portion in the first direction; the ground terminal is connected to the host conductor when the multi-band antenna is in use; the ground terminal extends from the second long edge; and is located closer to the first short edge.

Description

Technical Field

[0001] The present invention relates to a multiband antenna that is connected to a main body during use. Background Technology

[0002] refer to Figure 17 Japanese Patent Application Publication No. 2012-85262 (Patent Document 1) discloses a multi-band antenna 900 comprising a conductor plate 910 or a conductor body portion 910. The conductor body portion 910 has two openings 912 and two slots 914. Each slot 914 extends elongatedly in the Y direction.

[0003] Multiband antennas, such as those in Patent Document 1, need to provide good antenna characteristics and be further miniaturized. Summary of the Invention

[0004] Therefore, the object of the present invention is to provide a multi-band antenna that can provide good antenna characteristics and can be further miniaturized.

[0005] One aspect of the present invention provides a multiband antenna that is connected to a main body during use. The multiband antenna extends elongatedly in a first direction; the multiband antenna has a conductor body portion and a ground terminal; the conductor body portion extends in a horizontal plane defined by the first direction and a second direction perpendicular to the first direction; the conductor body portion has an opening and a slot; the slot extends elongatedly in the first direction; the conductor body portion has a first short edge, a second short edge, a first long edge, and a second long edge; the first short edge and the second short edge are respectively located at both ends of the conductor body portion in the first direction; the first long edge and the second long edge are respectively located at both ends of the conductor body portion in the second direction; the opening is formed at the first short edge and connects the slot to the outer side of the conductor body portion in the first direction; when using the multiband antenna, the ground terminal is connected to the main body; the ground terminal extends from the second long edge; and the ground terminal is located in the first direction closer to the first short edge than the second short edge.

[0006] In the multi-band antenna of the present invention, when using the multi-band antenna, the grounding terminal is connected to the main body. Therefore, by using the main body, which is an external component and connected to the grounding terminal, as part of the multi-band antenna, the size of the multi-band antenna of the present invention can be reduced individually.

[0007] In the multi-band antenna of the present invention, the grounding terminal extends from the second longest edge. This enables the multi-band antenna of the present invention to achieve high radiation efficiency.

[0008] In the multi-band antenna of the present invention, the grounding terminal is located in a first direction closer to the first short edge than the second short edge. Therefore, the multi-band antenna of the present invention can have a low resonant frequency without increasing the size of the multi-band antenna itself.

[0009] By studying the following description of the preferred embodiments and referring to the accompanying drawings, one can understand the purpose of the invention and its structure more fully. Attached Figure Description

[0010] Figure 1 This is a top view showing a multi-band antenna according to a first embodiment of the present invention. In the figure, the main body is represented by a dashed line.

[0011] Figure 2 It is shown Figure 1 A top view of the first variant of a multi-band antenna;

[0012] Figure 3 It is shown Figure 1 A top view of a second variant of a multi-band antenna;

[0013] Figure 4 It is shown Figure 1 Top view of the third variant of the multiband antenna;

[0014] Figure 5 It is shown Figure 1 Top view of the fourth variant of the multiband antenna;

[0015] Figure 6 This is a three-dimensional schematic diagram showing a multi-band antenna according to a second embodiment of the present invention;

[0016] Figure 7 It is shown Figure 6 A three-dimensional schematic diagram of the first variant of a multi-band antenna;

[0017] Figure 8 It is shown Figure 6 A three-dimensional schematic diagram of the second variant of the multi-band antenna;

[0018] Figure 9 It is shown Figure 6 A three-dimensional schematic diagram of the third variant of the multi-band antenna;

[0019] Figure 10 It is shown Figure 6 A three-dimensional schematic diagram of the fourth variant of the multi-band antenna;

[0020] Figure 11 It is shown Figure 6 A three-dimensional schematic diagram of the fifth variant of the multi-band antenna;

[0021] Figure 12 It is shown Figure 6 A three-dimensional schematic diagram of the sixth variant of the multi-band antenna;

[0022] Figure 13 It is shown Figure 6 A three-dimensional schematic diagram of the seventh variant of the multi-band antenna;

[0023] Figure 14 It is shown Figure 6 A three-dimensional schematic diagram of the eighth variant of the multi-band antenna;

[0024] Figure 15 It is shown Figure 6 A three-dimensional schematic diagram of the ninth variant of the multi-band antenna;

[0025] Figure 16 This is a diagram showing a variation of the stub;

[0026] Figure 17 This is a top view showing the multi-band antenna of Patent Document 1.

[0027] Although the invention may have various variations and alternatives, specific embodiments of the invention are illustrated by way of example in the accompanying drawings and will be described in detail herein. However, it should be understood that the drawings and detailed description are not intended to limit the invention to the specific forms disclosed, but rather, the invention is intended to cover all variations, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. Detailed Implementation

[0028] [First Embodiment]

[0029] Reference Figure 1 The multi-band antenna 100 according to the first embodiment of the present invention is partially made of a metal plate 750. However, the invention is not limited thereto. Specifically, the entire multi-band antenna 100 may also be made of a metal plate 750. Figure 1 As shown, the multi-band antenna 100 in this embodiment is connected to the main body 800 during use. In this embodiment, the main body 800 is, for example, the metal housing of the device that mounts the multi-band antenna 100, or a ground trace on a printed circuit board (e.g., a motherboard) that is separate from the multi-band antenna 100.

[0030] Reference Figure 1 The multi-band antenna 100 has multiple operating frequencies. The multi-band antenna 100 extends relatively long in a first direction. In this embodiment, the first direction is the Y direction. Furthermore, the first direction is also referred to as the left-right direction. Specifically, it is assumed that rightward is the +Y direction and leftward is the -Y direction.

[0031] like Figure 1 As shown, the multi-band antenna 100 has a conductor body 200 and a grounding terminal 300. (Refer to...) Figure 1The multi-band antenna 100 does not have a support member for supporting the conductor body 200. However, the invention is not limited thereto. Specifically, if the conductor body 200 has low strength due to, for example, its thinness, the multi-band antenna 100 may have a support member for supporting the conductor body 200.

[0032] Reference Figure 1 In this embodiment, the conductor body 200 is made of a metal plate 750. The conductor body 200 extends in a horizontal plane defined by a first direction and a second direction perpendicular to the first direction. In this embodiment, the second direction is the X direction. Furthermore, the second direction is also referred to as the front-back direction. Specifically, it is assumed that the front direction is +X and the rear direction is -X. In other words, the conductor body 200 extends in a horizontal plane perpendicular to both the first and second directions. In this embodiment, the vertical direction is the Z direction. Specifically, it is assumed that the upward direction is +Z and the downward direction is -Z. Additionally, the horizontal plane in this embodiment is the XY plane.

[0033] like Figure 1 As shown, the conductor body portion 200 has a first short edge 210, a second short edge 220, a first long edge 230, and a second long edge 240.

[0034] like Figure 1 As shown, in this embodiment, the first short edge 210 and the second short edge 220 extend along the second direction, respectively. Each of the first short edge 210 and the second short edge 220 has a straight line shape. However, the present invention is not limited. The first short edge 210 may have a shape other than a straight line shape, and the second short edge 220 may also have a shape other than a straight line shape. The first short edge 210 and the second short edge 220 are located at opposite ends of the conductor body portion 200 in the first direction, respectively.

[0035] like Figure 2 As shown, in this embodiment, the first long edge 230 and the second long edge 240 extend along a first direction. Each of the first long edge 230 and the second long edge 240 has a straight line shape. However, the present invention is not limited. The first long edge 230 may have a shape other than a straight line shape, and the second long edge 240 may also have a shape other than a straight line shape. The first long edge 230 and the second long edge 240 are located at opposite ends of the conductor body portion 200 in the second direction.

[0036] like Figure 1 As shown, the conductor body 200 has an opening 250 and a groove 260.

[0037] like Figure 1As shown, in this embodiment, the opening 250 is formed on the first short edge 210. The opening 250 connects the groove 260 to the outer side of the conductor body portion 200 in the first direction.

[0038] like Figure 1 As shown, in this embodiment, the groove 260 extends elongatedly in a first direction. The groove 260 has an inner edge 262.

[0039] See Figure 1 In this embodiment, the grounding terminal 300 is a copper strip. However, this embodiment is not limited to this. Specifically, the grounding terminal 300 may be made of a metal plate 750. When the multi-band antenna 100 is used, the grounding terminal 300 is connected to the main body 800. The grounding terminal 300 extends from the second long edge 240. The grounding terminal 300 is located in a first direction closer to the first short edge 210 than the second short edge 220. Specifically, the grounding terminal 300 is located closer to the opening 250 than the midpoint MP of the slot 260 in the first direction. More specifically, the grounding terminal 300 extends to connect with the first short edge 210. However, the invention is not limited to this. Specifically, the multi-band antenna 100 should be configured such that the grounding terminal 300 extends to at least partially connect with the first short edge 210. This configuration enables the multi-band antenna 100 to have a low resonant frequency. This also means that if a multi-band antenna 100 with this structure and a multi-band antenna without this structure have the same resonant frequency, then the size of the multi-band antenna 100 with this structure is smaller than the size of the multi-band antenna without this structure.

[0040] like Figure 4 As shown, the multi-band antenna 100 of this embodiment also includes a radiating element 400. However, this embodiment is not limited thereto. Specifically, the multi-band antenna 100 may not include the radiating element 400.

[0041] Reference Figure 1 In this embodiment, the radiating element 400 is made of a metal plate 750. The electrical length of the radiating element 400 is defined as one-quarter of the wavelength of a certain operating frequency of the multi-band antenna 100. In other words, the electrical length of the radiating element 400 corresponds to one-quarter of the wavelength of any operating frequency of the multi-band antenna 100. The radiating element 400 has a first portion 410 and a second portion 420.

[0042] like Figure 1As shown, in this embodiment, the first portion 410 extends from the conductor body portion 200 away from the groove 260 along a second direction. More specifically, the first portion 410 extends forward from the first long edge 230 of the conductor body portion 200 in a front-rear direction. The first portion 410 has a flat plate shape that extends linearly from the first long edge 230 of the conductor body portion 200 along the second direction. The first portion 410 has a first length L1 in the second direction.

[0043] like Figure 1 As shown, in this embodiment, the second portion 420 extends from the first portion 410 along a first direction. More specifically, the second portion 420 extends to the right from the first portion 410 in a left-right direction. The second portion 420 has a flat plate shape extending linearly along the first direction. The second portion 420 has a second length L2 along the first direction. The second length L2 is greater than the first length L1.

[0044] like Figure 1 As shown, the multiband antenna 100 of this embodiment includes a feed point 350. The feed point 350 is located to the right of the midpoint MP in the left-right direction. The feed point 350 is connected to the conductor body 200 via a slot 260. High-frequency power is supplied to the feed point 350 from the high-frequency power supply 351 via a feed wire 352. There are no particular limitations on the electrical connection method between the feed point 350 and the feed wire 352. For example, the feed wire 352 can be directly connected to the feed point 350 by welding or the like. Alternatively, the feed point 350 can be located near a portion of the feed wire 352, with a gap between them for capacitive or electromagnetic connection. In any case, the feed point 350 and the feed wire 352 should be electrically connected to each other so that the feed point 350 is powered by the feed wire 352.

[0045] As described above, the feed point 350 is connected to the conductor body 200 across the slot 260. This allows the slot 260 to be used as a fed antenna. Although the feed point 350 is not placed close to the radiating element 400, power is indirectly supplied from the feed point 350 to the radiating element 400. Therefore, the radiating element 400 is used as an unpowered antenna.

[0046] Although the first embodiment of the present invention has been described above, the following modifications can also be made to this embodiment.

[0047] [First variant example]

[0048] Reference Figure 2 According to the first variant, a portion of the multi-band antenna 100A is constructed from a metal plate 750A. However, the invention is not limited thereto. Specifically, the entire multi-band antenna 100A can be made from the metal plate 750A. In this variant, the multi-band antenna 100A is connected to a main body (not shown) during use.

[0049] Reference Figure 2 The multi-band antenna 100A has multiple operating frequencies. The multi-band antenna 100A extends relatively long in the first direction.

[0050] like Figure 2 As shown, the multi-band antenna 100A of this variant includes a conductor body 200A, a grounding terminal 300, and a radiating element 400. (Refer to...) Figure 2 The multi-band antenna 100A does not have a support member for supporting the conductor body 200A. However, the present invention is not limited thereto. Specifically, if the conductor body 200A has low strength due to, for example, being thinner, the multi-band antenna 100A may have a support member for supporting the conductor body 200A.

[0051] Reference Figure 2 In this variant, the conductor body 200A is composed of a metal plate 750A. The conductor body 200A has a connecting portion 270 and an opposing portion 280.

[0052] like Figure 2 As shown, in the second direction or the front-rear direction, the connecting portion 270 of this variant is further away from the radiating element 400 than the opposing portion 280. The connecting portion 270 is located behind the opposing portion 280 in the front-rear direction. The connecting portion 270 and the opposing portion 280 are positioned such that the slot 260 is provided between the connecting portion 270 and the opposing portion 280 in the second direction or the front-rear direction.

[0053] like Figure 2 As shown, the multi-band antenna 100A also includes a stub 600.

[0054] Reference Figure 2In this variant, the stub 600 is a so-called open stub. The stub 600 corresponds to the slot 260. In other words, the multi-band antenna 100A also includes the stub 600 corresponding to the slot 260. The stub 600 is located away from the opening 250 in a first direction. Specifically, the stub 600 is located to the right of the opening 250 and away from the opening 250 in the left-right direction. The electrical length of the stub 600 is less than one-quarter of the wavelength of any operating frequency of the multi-band antenna 100A. The stub 600 has a flat plate shape extending in a second direction or a front-back direction. However, the invention is not limited thereto. The stub 600 can be shaped as a bend, a spiral, or an irregular bend. The stub 600 has a first end 610 and a second end 620 in the second direction or the front-back direction. The first end 610 is located behind the second end 620 in the front-back direction. The first end 610 of the stub 600 is connected to the connecting portion 270. The second end 620 of the stub 600 is spaced apart from and faces the opposing portion 280. Specifically, in a plane including the second direction or the front-back direction, the second end 620 of the stub 600 is spaced apart from and faces the opposing portion 280. More specifically, the second end 620 of the stub 600 is spaced apart from and faces the opposing portion 280 in the vertical direction. In other words, the second end 620 of the stub 600 is an open end.

[0055] Reference Figure 2 The multiband antenna 100A of this variant is configured such that the frequency of a higher resonant mode (e.g., a second resonant mode) provided in the slot 260 can be adjusted by adjusting the relative position of the stub 600 with respect to the slot 260 in a first direction or a left-right direction. Since the stub 600 is located away from the opening 250 in the first direction as described above, the stub 600 has almost no effect on the resonant frequency of the first resonant mode provided in the first slot 260.

[0056] As described above, the multi-band antenna 100A of this variant is configured such that the first end 610 of the stub 600 is connected to the connecting portion 270, while the second end 620 of the stub 600 is spaced apart from and faces the opposing portion 280. However, the present invention is not limited thereto. Specifically, the multi-band antenna 100A of this variant can be modified as follows: the first end 610 of the stub 600 is spaced apart from and faces the connecting portion 270; the second end 620 of the stub 600 is connected to the opposing portion 280.

[0057] like Figure 2As shown, the multiband antenna 100A of this variant has a feed point 350. The feed point 350 is located to the right of the midpoint MP in the left-right direction. The feed point 350 is connected to the conductor body 200A across the slot 260. High-frequency power from the high-frequency power supply 351 is supplied to the feed point 350 through the feed line 352.

[0058] [Second variant example]

[0059] Reference Figure 3 According to the second variant, a portion of the multi-band antenna 100B is constructed from a metal plate 750B. However, the invention is not limited thereto. Specifically, the entire multi-band antenna 100B can be made from the metal plate 750B. In this variant, the multi-band antenna 100B is connected to a main body (not shown) during use.

[0060] Reference Figure 3 The multi-band antenna 100B has multiple operating frequencies. The multi-band antenna 100B extends relatively long in the first direction.

[0061] like Figure 3 As shown, the multi-band antenna 100B of this variant example has a conductor body 200B, a grounding terminal 300, and a radiating element 400. (Refer to...) Figure 3 The multi-band antenna 100B does not have a support member for supporting the conductor body 200B. However, the present invention is not limited thereto. Specifically, if the conductor body 200B has low strength due to, for example, being thinner, the multi-band antenna 100B may have a support member for supporting the conductor body 200B.

[0062] Reference Figure 3 In this variant, the conductor body 200B is composed of a metal plate 750B. The conductor body 200B has a connecting portion 270B and an opposing portion 280B.

[0063] like Figure 3 As shown, in the second direction or front-rear direction, the connecting portion 270B of this variant is further away from the radiating element 400 than the opposing portion 280B. The connecting portion 270B is located behind the opposing portion 280B in the front-rear direction. The connecting portion 270B and the opposing portion 280B are arranged such that the slot 260 is provided between the connecting portion 270B and the opposing portion 280B in the second direction or front-rear direction.

[0064] like Figure 3 As shown, the multiband antenna 100B also includes a stub 600B.

[0065] Reference Figure 3In this variant, the stub 600B is a so-called open stub. The stub 600B corresponds to slot 260. In other words, the multi-band antenna 100B also includes the stub 600B corresponding to slot 260. The stub 600B is located away from opening 250 in a first direction. Specifically, the stub 600B is located to the right of opening 250 and away from opening 250 in the left-right direction. The electrical length of the stub 600B is less than one-quarter of the wavelength of any operating frequency of the multi-band antenna 100B. The stub 600B has a flat plate shape extending in a second direction or a front-back direction. However, the invention is not limited thereto. The stub 600B can be shaped into a zigzag, spiral, or irregularly zigzag shape. The stub 600B has a first end 610B and a second end 620B in the second direction or the front-back direction. The first end 610B is located behind the second end 620B in the front-back direction. The first end 610B of the stub 600B is connected to the connecting portion 270B. The second end 620B of the stub 600B is spaced apart from and faces the opposing portion 280B. Specifically, in a plane including the second direction or the front-rear direction, the second end 620B of the stub 600B is spaced apart from and faces the opposing portion 280B. More specifically, the second end 620B of the stub 600B is spaced apart from and faces the opposing portion 280B in the front-rear direction. In other words, the second end 620B of the stub 600B is an open end.

[0066] Reference Figure 3 In this variant, the multiband antenna 100B is configured such that the frequency of a higher resonant mode (e.g., a second resonant mode) provided in the slot 260 can be adjusted by adjusting the relative position of the stub 600B with respect to the slot 260 in a first direction or a left-right direction. Since the stub 600B is located away from the opening 250 in the first direction as described above, the stub 600B has almost no effect on the resonant frequency of the first resonant mode provided in the first slot 260.

[0067] As described above, the multi-band antenna 100B of this variant is configured such that the first end 610B of the stub 600B is connected to the connecting portion 270B, while the second end 620B of the stub 600B is spaced apart from and faces the opposing portion 280B. However, the present invention is not limited thereto. Specifically, the multi-band antenna 100B of this variant can be modified as follows: the first end 610B of the stub 600B is spaced apart from and faces the connecting portion 270B, and the second end 620B of the stub 600B is connected to the opposing portion 280B.

[0068] like Figure 3As shown, the multiband antenna 100B of this variant has a feed point 350. The feed point 350 is located to the right of the midpoint MP in the left-right direction. The feed point 350 is connected to the conductor body 200B across the slot 260. High-frequency power from the high-frequency power supply 351 is supplied to the feed point 350 through the feed line 352.

[0069] [Third variant example]

[0070] Reference Figure 4 According to the third variant, a portion of the multi-band antenna 100C is constructed from a metal plate 750C. However, the invention is not limited thereto. Specifically, the entire multi-band antenna 100C may be made from the metal plate 750C. In this variant, the multi-band antenna 100C is connected to a main body (not shown) during use.

[0071] Reference Figure 4 The multi-band antenna 100C has multiple operating frequencies. The multi-band antenna 100C extends relatively long in the first direction.

[0072] like Figure 4 As shown, the multi-band antenna 100C of this variant example has a conductor body 200C and a grounding terminal 300. (Refer to...) Figure 3 and Figure 4 Unlike the multi-band antenna 100B of the second variant, the multi-band antenna 100C of this variant does not have a radiating element 400. (Refer to...) Figure 4 The multi-band antenna 100C does not have a support member for supporting the conductor body 200C. However, the present invention is not limited thereto. Specifically, if the conductor body 200C has low strength due to, for example, being thinner, the multi-band antenna 100C may have a support member for supporting the conductor body 200C.

[0073] Reference Figure 4 In this variant, the conductor body 200C is constructed from a metal plate 750C. The conductor body 200C extends in a horizontal plane defined by a first direction and a second direction perpendicular to the first direction. In other words, the conductor body 200C extends in a horizontal plane perpendicular to both the first and second directions.

[0074] like Figure 4 As shown, the conductor body portion 200C has a first short edge 210C, a second short edge 220C, a first long edge 230C, and a second long edge 240C.

[0075] like Figure 4As shown, in this variant, each of the first short edge 210C and the second short edge 220C extends along the second direction. Each of the first short edge 210C and the second short edge 220C has a straight shape. However, the invention is not limited. The first short edge 210C may have a shape other than a straight shape, and the second short edge 220C may also have a shape other than a straight shape. The first short edge 210C and the second short edge 220C are respectively located at both ends of the conductor body portion 200C in the first direction.

[0076] like Figure 4 As shown, in this variant, the first long edge 230C and the second long edge 240C extend along a first direction. Each of the first long edge 230C and the second long edge 240C has a straight shape. However, the invention is not limited. The first long edge 230C may have a shape other than a straight shape, and the second long edge 240C may also have a shape other than a straight shape. The first long edge 230C and the second long edge 240C are located at opposite ends of the conductor body portion 200C in a second direction.

[0077] like Figure 4 As shown, the conductor body portion 200C has an opening 250 and a groove 260.

[0078] Reference Figure 4 In this variant, the conductor body portion 200C has a connecting portion 270C and an opposing portion 280C. The connecting portion 270C and the opposing portion 280C of this variant have a structure similar to that of the connecting portion 270B and the opposing portion 280B of the second variant. Therefore, a detailed description thereof is omitted.

[0079] like Figure 4 As shown, in this variant, the grounding terminal 300 extends from the second long edge 240C. The grounding terminal 300 is located in a first direction closer to the first short edge 210C than the second short edge 220C. Specifically, the grounding terminal 300 is located in a first direction closer to the opening 250 than the midpoint MP of the slot 260. More specifically, the grounding terminal 300 extends to connect with the first short edge 210C. However, the invention is not limited thereto. Specifically, the multi-band antenna 100C should be configured such that the grounding terminal 300 extends to at least partially connect with the first short edge 210C. This configuration allows the multi-band antenna 100C to have a low resonant frequency. This also means that if a multi-band antenna 100C with this configuration and a multi-band antenna without this configuration have the same resonant frequency, the size of the multi-band antenna 100C with this configuration is smaller than the size of the multi-band antenna without this configuration.

[0080] like Figure 4As shown, the multi-band antenna 100C also includes a stub 600C. The stub 600C has a first end 610C and a second end 620C in a second direction or a front-rear direction. The stub 600C of this variant has a structure similar to that of the stub 600B of the second variant. Therefore, a detailed description thereof is omitted.

[0081] like Figure 4 As shown, the multiband antenna 100C of this variant has a feed point 350. The feed point 350 is located to the right of the midpoint MP in the left-right direction. The feed point 350 is connected to the conductor body 200C across the slot 260. High-frequency power from the high-frequency power supply 351 is supplied to the feed point 350 through the feed line 352.

[0082] [Fourth Variation Example]

[0083] Reference Figure 5 According to the fourth variant, a portion of the multi-band antenna 100D is constructed from a metal plate 750D. However, the invention is not limited thereto. Specifically, the entire multi-band antenna 100D can be made from a metal plate 750D. In this variant, the multi-band antenna 100D is connected to a main body (not shown) during use.

[0084] Reference Figure 5 The multi-band antenna 100D has multiple operating frequencies. The multi-band antenna 100D extends relatively long in the first direction.

[0085] like Figure 5 As shown, the multi-band antenna 100D of this variant example has a conductor body 200D and a grounding terminal 300. (Reference) Figure 5 The multi-band antenna 100D does not have a support member for supporting the conductor body 200D. However, the present invention is not limited thereto. Specifically, if the conductor body 200D has low strength due to, for example, being thinner, the multi-band antenna 100D may have a support member for supporting the conductor body 200D.

[0086] Reference Figure 5 In this variant, the conductor body portion 200D is constructed from a metal plate 750D. The conductor body portion 200D extends in a horizontal plane defined by a first direction and a second direction perpendicular to the first direction. In other words, the conductor body portion 200D extends in a horizontal plane perpendicular to both the first and second directions.

[0087] like Figure 5 As shown, the conductor body portion 200D has a first short edge 210D, a second short edge 220D, a first long edge 230D, and a second long edge 240D.

[0088] like Figure 5As shown, in this variant, each of the first short edge 210D and the second short edge 220D extends along the second direction. Each of the first short edge 210D and the second short edge 220D has a straight line shape. However, the invention is not limited. The first short edge 210D may have a shape other than a straight line shape, and the second short edge 220D may also have a shape other than a straight line shape. The first short edge 210D and the second short edge 220D are respectively located at both ends of the conductor body portion 200D in the first direction.

[0089] like Figure 5 As shown, in this variant, each of the first long edge 230D and the second long edge 240D extends along a first direction. Each of the first long edge 230D and the second long edge 240D has a straight line shape. However, the invention is not limited. The first long edge 230D may have a shape other than a straight line shape, and the second long edge 240D may also have a shape other than a straight line shape. The first long edge 230D and the second long edge 240D are located at opposite ends of the conductor body portion 200D in the second direction.

[0090] like Figure 5 As shown, the conductor body portion 200D has an opening 250, a groove 260 and an additional groove 290.

[0091] like Figure 5 As shown, the additional groove 290 of this variant extends relatively long in the first direction. The additional groove 290 does not communicate with the outside of the conductor body portion 200D. The additional groove 290 is located in front of the groove 260 in the front-rear direction. However, the invention is not limited thereto. Specifically, the additional groove 290 can be provided at any position on the conductor body portion 200D.

[0092] Reference Figure 5 In this variant, the conductor body portion 200D has a connecting portion 270D and an opposing portion 280D. The connecting portion 270D and the opposing portion 280D of this variant have a structure similar to that of the connecting portion 270B and the opposing portion 280B of the second variant. Therefore, a detailed description thereof is omitted.

[0093] like Figure 5As shown, in this variant, the grounding terminal 300 extends from the second long edge 240D. The grounding terminal 300 is located in a first direction closer to the first short edge 210D than the second short edge 220D. Specifically, the grounding terminal 300 is located in the first direction closer to the opening 250 than the midpoint MP of the slot 260. More specifically, the grounding terminal 300 extends to connect with the first short edge 210D. However, the invention is not limited thereto. Specifically, the multi-band antenna 100D should be configured such that the grounding terminal 300 extends to at least partially connect with the first short edge 210D. This configuration allows the multi-band antenna 100D to have a low resonant frequency. This also means that if a multi-band antenna 100D with this configuration and a multi-band antenna without this configuration have the same resonant frequency, the size of the multi-band antenna 100D with this configuration is smaller than the size of the multi-band antenna without this configuration.

[0094] like Figure 5 As shown, the multiband antenna 100D also includes a stub 600D. The stub 600D has a first end 610D and a second end 620D in a second direction or a front-rear direction. The stub 600D of this variant has a structure similar to that of the stub 600B of the second variant. Therefore, a detailed description thereof is omitted.

[0095] like Figure 5 As shown, the multiband antenna 100D of this variant has a feed point 350. The feed point 350 is located to the right of the midpoint MP in the left-right direction. The feed point 350 is connected to the conductor body 200D across the slot 260. High-frequency power is supplied to the feed point 350 from the high-frequency power supply 351 through the feed line 352. Although the feed point 350 is not located near the auxiliary slot 290, power is indirectly supplied to the auxiliary slot 290 from the feed point 350. Therefore, the auxiliary slot 290 is used as an unpowered antenna.

[0096] [Second Embodiment]

[0097] refer to Figure 6 According to the second embodiment of the present invention, the multi-band antenna 100E is partially made of a metal plate 750E. However, the present invention is not limited thereto. Specifically, the entire multi-band antenna 100E may be made of a metal plate 750E. The multi-band antenna 100E is connected to a main body (not shown) during use. In this embodiment, the main body is, for example, the metal housing of the device on which the multi-band antenna 100E is placed. The multi-band antenna 100E according to this embodiment has the same characteristics as the multi-band antenna 100 of the first embodiment described above (see reference 100). Figure 1 A structure similar to ) . Therefore, for Figure 6Components of the multi-band antenna 100E shown that are identical to those of the multi-band antenna 100 in the first embodiment are indicated using the same reference numerals as those in the first embodiment. The directions and orientations in this embodiment will be described hereinafter using the same terms as in the first embodiment.

[0098] Reference Figure 6 The multi-band antenna 100E of this embodiment has multiple operating frequencies. The multi-band antenna 100E extends relatively long in a first direction.

[0099] like Figure 6 As shown, the multiband antenna 100E has a conductor body 200, a grounding terminal 300E, and a radiating element 400.

[0100] refer to Figure 6 In this embodiment, the grounding terminal 300E is a copper strip. However, this embodiment is not limited to this. Specifically, the grounding terminal 300E can be made of a metal plate 750E. When using the multi-band antenna 100E, the grounding terminal 300E is connected to the main body. The grounding terminal 300E extends from the second long edge 240. The grounding terminal 300E is located in a first direction closer to the first short edge 210 than the second short edge 220. Specifically, the grounding terminal 300E is located in a first direction closer to the opening 250 than the midpoint MP of the slot 260. More specifically, the grounding terminal 300E extends to connect with the first short edge 210. However, the invention is not limited to this. Specifically, the multi-band antenna 100E should be configured such that the grounding terminal 300E extends to at least partially connect with the first short edge 210. This configuration allows the multi-band antenna 100E to have a low resonant frequency. This also means that if a multi-band antenna 100E with this structure has the same resonant frequency as a multi-band antenna without this structure, then the size of the multi-band antenna 100E with this structure is smaller than the size of the multi-band antenna without this structure.

[0101] Reference Figure 6 In this embodiment, the grounding terminal 300E has a portion 310 extending in a direction intersecting the horizontal plane. This allows the conductor body portion 200 to be arranged away from the main body when the multi-band antenna 100E is connected to the main body. Therefore, the conductor body portion 200 is less affected by the main body.

[0102] The second embodiment of the present invention has been described above, but this embodiment can also be modified as follows.

[0103] [First variant example]

[0104] Reference Figure 7According to the first variant, a portion of the multi-band antenna 100F is constructed from a metal plate 750F. In this variant, the multi-band antenna 100F is connected to the main body (not shown) during use.

[0105] Reference Figure 7 The multi-band antenna 100F has multiple operating frequencies. The multi-band antenna 100F extends relatively long in the first direction.

[0106] like Figure 7 As shown, the multiband antenna 100F of this variant includes a conductor body 200, a grounding terminal 300E, and a radiating element 400. The grounding terminal 300E of this variant has the same structure as the grounding terminal 300E of the second embodiment described above. Therefore, a detailed description thereof is omitted.

[0107] like Figure 7 As shown, the multi-band antenna 100F also includes a feed terminal 700. The feed terminal 700 has a portion 710 extending in a direction intersecting the horizontal plane. Specifically, the feed terminal 700 extends in a vertical direction. More specifically, the feed terminal 700 extends downward from the conductor body portion 200 in a vertical direction. Therefore, the multi-band antenna 100F can be mounted on the surface of a circuit board (not shown).

[0108] [Second variant example]

[0109] Reference Figure 8 According to the second variant, a portion of the multi-band antenna 100G is constructed from a metal plate 750G. However, the invention is not limited thereto. Specifically, the entire multi-band antenna 100G can be made from the metal plate 750G. In this variant, the multi-band antenna 100G is connected to a main body (not shown) during use.

[0110] Reference Figure 8 The multi-band antenna 100G has multiple operating frequencies. The multi-band antenna 100G extends relatively long in the first direction.

[0111] like Figure 8 As shown, the multiband antenna 100G of this variant has a conductor body 200, a grounding terminal 300E, and a radiating element 400G. The grounding terminal 300E of this variant has the same structure as the grounding terminal 300E of the second variant described above. Therefore, a detailed description thereof is omitted.

[0112] Reference Figure 8In this variant, the radiating element 400G is constructed from a metal plate 750G. The electrical length of the radiating element 400G is defined as one-quarter of the wavelength of any operating frequency of the multi-band antenna 100G. In other words, the electrical length of the radiating element 400G corresponds to one-quarter of the wavelength of any operating frequency of the multi-band antenna 100G. The radiating element 400G has a first portion 410, a second portion 420, and a folded portion 440.

[0113] like Figure 8 As shown, in this variant, the folded portion 440 extends from the second portion 420 in a direction intersecting the horizontal plane. More specifically, the folded portion 440 extends from the second portion 420 in a vertical direction. Specifically, the folded portion 440 extends downwards from the second portion 420 in a vertical direction. Therefore, the strength of the multi-band antenna 100G can be increased, and the radiation efficiency of the multi-band antenna 100G can be improved without increasing its occupied area. However, the invention is not limited thereto. Specifically, the folded portion 440 can extend upwards from the second portion 420 in a vertical direction. Again, in this case, the strength of the multi-band antenna 100G can be increased, and the radiation efficiency of the multi-band antenna 100G can be improved without increasing its occupied area.

[0114] [Third variant example]

[0115] Reference Figure 9 According to the third variant, a portion of the multi-band antenna 100H is constructed from a metal plate 750H. However, the invention is not limited thereto. Specifically, the entire multi-band antenna 100H can be made from the metal plate 750H. In this variant, the multi-band antenna 100H is connected to a main body (not shown) during use.

[0116] Reference Figure 9 The multi-band antenna 100H has multiple operating frequencies. The multi-band antenna 100H extends relatively long in the first direction.

[0117] like Figure 9 As shown, the multiband antenna 100H of this variant has a conductor body 200, a grounding terminal 300E, and a radiating element 400H. The grounding terminal 300E of this variant has the same structure as the grounding terminal 300E of the second embodiment described above. Therefore, a detailed description thereof is omitted.

[0118] Reference Figure 9In this variant, the radiating element 400H is constructed from a metal plate 750H. The electrical length of the radiating element 400H is defined as one-quarter of the wavelength of a certain operating frequency of the multi-band antenna 100H. In other words, the electrical length of the radiating element 400H corresponds to one-quarter of the wavelength of any operating frequency of the multi-band antenna 100H. The radiating element 400H has a first portion 410, a second portion 420, a folded portion 440, and an additional extension 450. The folded portion 440 of this variant has the same structure as the folded portion 440 of the second variant described above. Therefore, a detailed description thereof is omitted.

[0119] like Figure 9 As shown, the additional extension 450 extends from the folded portion 440 in a direction intersecting the folded portion 440. More specifically, the additional extension 450 extends from the folded portion 440 in a second direction. Specifically, the additional extension 450 extends rearward from the folded portion 440 in a front-rear direction. Therefore, the strength of the multi-band antenna 100H can be increased, and the radiation efficiency of the multi-band antenna 100H can be improved without increasing the occupied area of ​​the multi-band antenna 100H.

[0120] [Fourth Variation Example]

[0121] Reference Figure 10 According to the fourth variant, a portion of the multi-band antenna 100J is constructed from a metal plate 750J. However, the invention is not limited thereto. Specifically, the entire multi-band antenna 100J can be made from a metal plate 750J. In this variant, the multi-band antenna 100J is connected to a main body (not shown) during use.

[0122] Reference Figure 10 The multi-band antenna 100J has multiple operating frequencies. The multi-band antenna 100J extends relatively long in the first direction.

[0123] like Figure 10 As shown, the multiband antenna 100J of this variant has a conductor body 200, a grounding terminal 300E, and a radiating element 400G. The grounding terminal 300E of this variant has the same structure as the grounding terminal 300E of the second embodiment described above. Therefore, a detailed description thereof is omitted. The radiating element 400G of this variant has the same structure as the radiating element 400G of the second variant described above. Therefore, a detailed description thereof is omitted.

[0124] like Figure 10As shown, the multi-band antenna 100J also has an extension 500. The extension 500 extends from the conductor body 200 in a direction intersecting the horizontal plane. Specifically, the extension 500 extends from the second short edge 220 of the conductor body 200 in a vertical direction. More specifically, the extension 500 extends downward from the second short edge 220 of the conductor body 200 in a vertical direction. Therefore, the strength of the multi-band antenna 100J can be increased, and the radiation efficiency of the multi-band antenna 100J can be improved without increasing the occupied area of ​​the multi-band antenna 100J.

[0125] [Fifth Variation Example]

[0126] refer to Figure 11 According to a fifth variation of the present invention, the multi-band antenna 100K is partially made of a metal plate 750K. However, the present invention is not limited thereto. Specifically, the entire multi-band antenna 100K may be made of a metal plate 750K. The multi-band antenna 100K of this variation is connected to a main body (not shown) during use.

[0127] Reference Figure 11 The multi-band antenna 100K has multiple operating frequencies. The multi-band antenna 100K extends relatively long in the first direction.

[0128] like Figure 11 As shown, the multiband antenna 100K of this variant includes a conductor body 200, a grounding terminal 300E, and a radiating element 400. The grounding terminal 300E of this variant has the same structure as the grounding terminal 300E of the second embodiment described above. Therefore, a detailed description thereof is omitted.

[0129] like Figure 11 As shown, the multi-band antenna 100K also includes two extensions 500K. Each extension 500K extends from the conductor body 200 in a direction intersecting the horizontal plane. Specifically, each extension 500K extends from the first short edge 210 of the conductor body 200 in a vertical direction. More specifically, each extension 500K extends downward from the first short edge 210 of the conductor body 200 in a vertical direction. Therefore, the strength of the multi-band antenna 100K can be increased, and the radiation efficiency of the multi-band antenna 100K can be improved without increasing its occupied area.

[0130] [Sixth Variation Example]

[0131] Reference Figure 12 According to the sixth variant, a portion of the multi-band antenna 100L is made of a metal plate 750L. However, the invention is not limited thereto. Specifically, the entire multi-band antenna 100L can be made of a metal plate 750L. In this variant, the multi-band antenna 100L is connected to a main body (not shown) during use.

[0132] Reference Figure 12 The multi-band antenna 100L has multiple operating frequencies. The multi-band antenna 100L extends relatively long in the first direction.

[0133] like Figure 12 As shown, the multiband antenna 100L of this variant has a conductor body 200, a grounding terminal 300E, and a radiating element 400. The grounding terminal 300E of this variant has the same structure as the grounding terminal 300E of the second embodiment described above. Therefore, a detailed description thereof is omitted.

[0134] like Figure 12 As shown, the multi-band antenna 100L also has an extension 500L. The extension 500L extends from the conductor body 200 in a direction intersecting the horizontal plane. Specifically, the extension 500L extends from the second long edge 240 of the conductor body 200 in a vertical direction. More specifically, the extension 500L extends downward from the second long edge 240 of the conductor body 200 in a vertical direction. Therefore, the strength of the multi-band antenna 100L can be increased, and the radiation efficiency of the multi-band antenna 100L can be improved without increasing the occupied area of ​​the multi-band antenna 100L.

[0135] [Seventh Variation Example]

[0136] Reference Figure 13 According to the seventh variant, a portion of the multi-band antenna 100M is made of a metal plate 750M. However, the invention is not limited thereto. Specifically, the entire multi-band antenna 100M may be made of a metal plate 750M. In this variant, the multi-band antenna 100M is connected to a main body (not shown) during use.

[0137] Reference Figure 13 The multi-band antenna 100M has multiple operating frequencies. The multi-band antenna 100M extends relatively long in the first direction.

[0138] like Figure 13 As shown, the multi-band antenna 100M of this variant has a conductor body 200, a ground terminal 300E, and a radiating element 400G. The ground terminal 300E of this variant has the same structure as the ground terminal 300E of the second embodiment described above. Therefore, a detailed description thereof is omitted. The radiating element 400G of this variant has the same structure as the radiating element 400G of the second variant described above. Therefore, a detailed description thereof is omitted.

[0139] like Figure 13 As shown, the multi-band antenna 100M also includes an extension 500L. The extension 500L in this variant has the same structure as the extension 500L in the sixth variant described above.

[0140] Since the multi-band antenna 100M of this variant also includes a folding portion 440 and an extension portion 500L, the strength of the multi-band antenna 100M can be further improved, and the radiation efficiency of the multi-band antenna 100M can be improved without increasing the area occupied by the multi-band antenna 100M.

[0141] [Eighth Variation Example]

[0142] Reference Figure 14 According to the eighth variant, a portion of the multi-band antenna 100N is made of a metal plate 750N. However, the invention is not limited thereto. Specifically, the entire multi-band antenna 100N may be made of a metal plate 750N. The multi-band antenna 100N of this variant is connected to a main body (not shown) during use.

[0143] Reference Figure 14 The multi-band antenna 100N has multiple operating frequencies. The multi-band antenna 100N extends relatively long in the first direction.

[0144] like Figure 14 As shown, the multiband antenna 100N of this variant has a conductor body 200, a ground terminal 300E, and a radiating element 400H. The ground terminal 300E of this variant has the same structure as the ground terminal 300E of the second embodiment described above. Therefore, a detailed description thereof is omitted. The radiating element 400H of this variant has the same structure as the radiating element 400H of the third variant described above. Therefore, a detailed description thereof is omitted.

[0145] like Figure 14 As shown, the multi-band antenna 100N also includes an extension 500L. The extension 500L in this variant example has the same structure as the extension 500L in the sixth variant example described above.

[0146] Since the multiband antenna 100N of this variant also includes a folding portion 440, an additional extension portion 450 and an extension portion 500L, the strength of the multiband antenna 100N can be further increased, and the radiation efficiency of the multiband antenna 100N can be improved without increasing the area occupied by the multiband antenna 100N.

[0147] [Ninth Variation Example]

[0148] Reference Figure 15 According to a ninth variation of the present invention, a portion of the multi-band antenna 100P is made of a metal plate 750P. However, the invention is not limited thereto. Specifically, the entire multi-band antenna 100P may be made of a metal plate 750P. The multi-band antenna 100P of this variation is connected to a main body (not shown) during use.

[0149] Reference Figure 15 The multi-band antenna 100P has multiple operating frequencies. The multi-band antenna 100P extends relatively long in the first direction.

[0150] like Figure 15 As shown, the multiband antenna 100P of this variant has a conductor body 200, a ground terminal 300E, and a radiating element 400. The ground terminal 300E of this variant has the same structure as the ground terminal 300E of the second embodiment described above. Therefore, a detailed description thereof is omitted.

[0151] like Figure 15 As shown, the multi-band antenna 100P also includes a feed terminal 700P. The feed terminal 700P is made of a metal plate 750P. The feed terminal 700P has a portion 710P extending in a direction intersecting the horizontal plane. Specifically, the feed terminal 700P extends in a vertical direction. Specifically, the feed terminal 700P extends downward from the conductor body portion 200 in a vertical direction. Therefore, the multi-band antenna 100P can be mounted on the surface of a circuit board (not shown).

[0152] Reference Figure 15 The multi-band antenna 100P is configured such that a set of conductor body portions 200, radiating elements 400, and feed terminals 700P are made of a single metal plate 750P. However, the invention is not limited thereto. Specifically, the multi-band antenna 100P should be configured such that at least the conductor body portions 200 and the feed terminals 700P are made of metal plate 750P.

[0153] like Figure 15 As shown, the power supply terminal 700P of this variant has a protrusion 720 and a joint 730.

[0154] like Figure 15 As shown, the protrusion 720 of this variant example has a flat plate shape perpendicular to the vertical direction. The protrusion 720 protrudes into the groove 260 from the inner edge 262. More specifically, the protrusion 720 protrudes rearward from the inner edge 262 located on the front side of the groove 260 into the groove 260. The protrusion 720 has an end portion 722 in a first direction. Specifically, the protrusion 720 has a right end portion 722 in the left-right direction.

[0155] like Figure 15 As shown, the joint 730 of this variant has a flat plate shape perpendicular to the first direction. The joint 730 extends from the end 722 of the protrusion 720 in a direction intersecting the horizontal plane. More specifically, the joint 730 extends downward in a vertical direction from the right end 722 of the protrusion 720. The joint 730 also serves as a portion 710P extending in a direction intersecting the horizontal plane.

[0156] refer to Figure 15 When a set of conductor body 200 and power supply terminal 700P are formed from a single metal plate 750P, the above-described structure of the power supply terminal 700P results in the joint 730 having a relatively large length.

[0157] Although the present invention has been specifically described above with reference to the embodiments, the present invention is not limited thereto, and may have various modifications and alternatives.

[0158] Although the feed terminals 700 and 700P in the above-described variants have portions 710 and 710P extending in a direction intersecting the horizontal plane, the present invention is not limited thereto. Specifically, the feed terminal 700 may not have a portion 710 extending in a direction intersecting the horizontal plane. Similarly, the feed terminal 700P may not have a portion 710P extending in a direction intersecting the horizontal plane. In other words, the feed terminals 700 and 700P may only include portions extending in the horizontal plane. The multiband antenna 100F and 100P, whose feed terminals 700 and 700P are composed only of portions extending in the horizontal plane, may be provided with a ground connection portion located around the feed terminals 700 and 700P and aligned with the feed terminals 700 and 700P in a first direction. This allows the outer conductor (not shown) of the coaxial cable (not shown) to be connected to the grounding connection along with the connection between the center conductor and the feed terminals 700 and 700P of the multi-band antennas 100F and 100P.

[0159] In the first embodiment described above, the second variant of the multi-band antenna 100B (see reference) Figure 3 This includes the stub 600B and the third variant, the multi-band antenna 100C (see reference). Figure 4 This includes the stub 600C and the fourth variant, the multi-band antenna 100D (see reference). Figure 5 This includes the stub 600D. However, the invention is not limited thereto. See also... Figure 16 Instead of stubs 600B, 600C, and 600D, multiband antennas 100B, 100C, and 100D may include stub 600X, which extends in a second direction and is then bent to extend in a first direction. Specifically, the first end 610X of stub 600X is connected to the connecting portion 270X, and the second end 620X of stub 600X is spaced apart from and faces the opposing portion 280X.

[0160] Although preferred embodiments of the invention have been described, those skilled in the art will recognize that other and further modifications can be made thereto without departing from the spirit of the invention, and all such embodiments falling within the spirit of the invention are intended to be claimed.

Claims

1. A multi-band antenna connected to a dominant body during use, wherein: The multi-band antenna extends in a first direction; The multi-band antenna has a conductor body, a grounding terminal, and a feed point; The conductor body extends in a horizontal plane defined by the first direction and a second direction perpendicular to the first direction, such that the length of the multi-band antenna in the first direction is longer than that in the second direction; The conductor body has an opening and a groove; The groove extends in the first direction; The conductor body portion has a first short edge, a second short edge, a first long edge, and a second long edge; The first short edge and the second short edge are respectively located at both ends of the conductor body in the first direction; The first long edge and the second long edge are respectively located at both ends of the conductor body in the second direction; The opening is formed at the first short edge and connects the groove to the outer side of the conductor body in the first direction; When using the multi-band antenna, the grounding terminal is connected to the main body; The grounding terminal extends from the second long edge; The grounding terminal is located closer to the first short edge than the second short edge in the first direction; The feed point is located closer to the second short edge than the first short edge in the first direction, and is connected to the conductor body across the slot; The grounding terminal has a portion extending in a direction intersecting the horizontal plane; The multi-band antenna also has a feed terminal; The power supply terminal has a portion extending in a direction intersecting the horizontal plane; The multiband antenna is configured such that at least the conductor body and the feed terminal are made of a metal plate; The power supply terminal has a protrusion and a joint; The protrusion extends from the inner edge of the groove into the groove; The protrusion has an end in the first direction; and The joint extends from the end of the protrusion in a direction intersecting the horizontal plane.

2. The multi-band antenna according to claim 1, wherein, The grounding terminal extends to at least partially connect to the first short edge.

3. The multi-band antenna according to claim 1, wherein, The multi-band antenna further includes a radiating element.

4. The multi-band antenna according to claim 3, wherein: The radiating element has a first part and a second part; The first portion extends from the conductor body portion away from the groove in the second direction; The first portion has a first length in the second direction; The second portion extends from the first portion along the first direction; The second portion has a second length in the first direction; and The second length is greater than the first length.

5. The multi-band antenna according to claim 4, wherein: The radiating element also has a folded portion; and The fold extends from the second portion in a direction intersecting the horizontal plane.

6. The multi-band antenna according to claim 5, wherein: The radiating element also has an additional extension; and The additional extension extends from the fold in a direction that intersects with the fold.

7. The multi-band antenna according to claim 1, wherein: The multi-band antenna further includes a stub wire; The conductor body has a connecting portion and an opposing portion; The connecting portion and the opposing portion are arranged such that the groove is located between the connecting portion and the opposing portion in the second direction; The stub has a first end and a second end in the second direction; The first end of the stub is connected to the connecting portion; and The second end of the stub is spaced apart from the opposing portion and faces the opposing portion.

8. The multi-band antenna according to claim 1, wherein: The multi-band antenna further has an extension; and The extension extends from the conductor body in a direction intersecting the horizontal plane.

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