Antenna structure

Abstract

Embodiments of the present invention provide an antenna structure. The antenna structure comprises: a radiator having a length in a second direction that successively increases in a first direction perpendicular to the second direction on a plane; an auxiliary radiator arranged to be spaced apart from the radiator and having a length in the second direction that successively increases in the opposite direction to the first direction; and a parasitic element disposed between the radiator and the auxiliary radiator. A wideband antenna structure capable of multiband radiation is provided.

Description

antenna structure

[0001] The present invention relates to an antenna structure. More specifically, the present invention relates to an antenna structure including an antenna unit.

[0002] With the recent development of the information society, wireless communication technologies such as Wi-Fi and Bluetooth are being applied or built into display devices, electronic devices, buildings, etc.

[0003] In addition, as mobile communication technology has evolved recently, antennas for performing high-frequency or ultra-high-frequency communication are being applied to public transportation such as buses and subways, building structures, TVs, monitors, and various mobile devices.

[0004] Accordingly, it may be necessary to implement radiation characteristics in multiple frequency bands even through a single antenna device.

[0005] However, when antennas of different frequency bands are placed adjacently, the radiation characteristics and impedance characteristics of the different antennas may collide with each other and be disturbed.

[0006] Additionally, antennas with multiple frequency bands may include multiple radiators or radiating elements of different sizes and shapes. This increases the space required for antenna placement, which may compromise the space efficiency and aesthetics of the structure to which the antenna device is applied.

[0007] An object of the present invention is to provide an antenna structure having improved radiation characteristics and space efficiency.

[0008] 1. An antenna structure comprising a first antenna unit including a first radiator and a first auxiliary radiator having an asymmetrical shape with respect to a first direction, a second antenna unit spaced apart from the first antenna unit in a second direction perpendicular to the first direction on a plane and including a second radiator and a second auxiliary radiator having an asymmetrical shape with respect to the first direction, a first sub-antenna spaced apart from the second antenna unit with the first antenna unit interposed therebetween, spaced apart from the first antenna unit with the second antenna unit interposed therebetween, or disposed between the first antenna unit and the second antenna unit, and a second sub-antenna spaced apart from the second antenna unit with the first antenna unit interposed therebetween, spaced apart from the first antenna unit with the second antenna unit interposed therebetween, or disposed between the first antenna unit and the second antenna unit.

[0009] 2. An antenna structure in the above 1, wherein the length of the first radiator in the first direction increases in the second direction, and the length of the first auxiliary radiator in the first direction increases in a direction opposite to the second direction.

[0010] 3. In the above 1, the first radiator includes a first radiating portion, a second radiating portion, and a third radiating portion, the lengths of which in the first direction sequentially increase in the second direction.

[0011] 4. An antenna structure according to the above 3, further comprising a first transmission line electrically connected to the first radiator, wherein the first radiating portion is directly connected to the first transmission line and includes a first portion having a constant length in the first direction, a second portion extending from the first portion and having a length in the first direction increasing in the second direction, and a third portion protruding from the second portion in the first direction.

[0012] 5. An antenna structure according to the above 3, wherein the second radiating portion has a length in the first direction greater than that of the first radiating portion, and the length of the second radiating portion in the first direction increases in the second direction.

[0013] 6. An antenna structure in the above 3, wherein the third radiating portion has a length in the first direction greater than that of the second radiating portion, and the length of the third radiating portion in the first direction increases in the second direction.

[0014] 7. In the above 3, the first auxiliary radiator includes a first auxiliary radiating portion, a second auxiliary radiating portion, and a third auxiliary radiating portion, the lengths of which in the first direction sequentially increase in a direction opposite to the second direction.

[0015] 8. An antenna structure according to 7 above, wherein the first auxiliary radiating portion has a symmetrical shape with respect to the first radiating portion and the first direction, and the second auxiliary radiating portion has a symmetrical shape with respect to the second radiating portion and the first direction.

[0016] 9. An antenna structure in the above 7, wherein the third auxiliary radiating portion has an asymmetrical shape with respect to the third radiating portion and the first direction.

[0017] 10. An antenna structure according to the above 1, further comprising a first parasitic element disposed between the first radiator and the first auxiliary radiator.

[0018] 11. An antenna structure according to the above 10, wherein the first parasitic element includes a first parasitic portion extending in the first direction, and a second parasitic portion connected to the first parasitic portion and extending in the second direction.

[0019] 12. An antenna structure in the above 1, wherein the first antenna unit and the second antenna unit have a symmetrical shape with respect to the first direction.

[0020] 13. An antenna structure according to the above 1, wherein the first sub-antenna unit includes a first sub-radiator whose length in the first direction increases in the second direction, and the second sub-antenna unit includes a second sub-radiator whose length in the first direction increases in a direction opposite to the second direction.

[0021] 14. In the above 1, the first sub-antenna unit and the second sub-antenna unit are arranged between the first antenna unit and the second antenna unit, an antenna structure.

[0022] 15. In the above 14, the second sub-antenna unit has a symmetrical shape with respect to the first sub-antenna unit, the antenna structure.

[0023] 16. An antenna structure according to the above 1, wherein the first sub-antenna unit is disposed between the first antenna unit and the second antenna unit, and the second sub-antenna unit is spaced apart from the first sub-antenna unit with the second antenna unit interposed therebetween, or spaced apart from the first sub-antenna unit with the first antenna unit interposed therebetween.

[0024] 17. An antenna structure in the above 1, wherein the first antenna unit and the second antenna unit are disposed between the first sub-antenna unit and the second sub-antenna unit.

[0025] In exemplary embodiments, the antenna structure may include a first antenna unit, a second antenna unit, a first sub-antenna unit, and a second sub-antenna unit.

[0026] The first sub-antenna unit may be spaced apart from the second antenna unit with the first antenna unit therebetween, or spaced apart from the first antenna unit with the second antenna unit therebetween, or disposed between the first antenna unit and the second antenna unit. The second sub-antenna unit may be spaced apart from the second antenna unit with the first antenna unit therebetween, or spaced apart from the first antenna unit with the second antenna unit therebetween, or disposed between the first antenna unit and the second antenna unit. The communication speed may be increased while improving the spatial efficiency of the antenna structure through the first sub-antenna unit and the second sub-antenna unit.

[0027] The arrangement structure of antenna units and sub-antenna units according to exemplary embodiments can increase communication speed while maintaining or improving isolation and antenna gain.

[0028] FIG. 1 and FIG. 2 are schematic plan views and cross-sectional views, respectively, showing antenna structures according to exemplary embodiments.

[0029] FIG. 3 is a partially enlarged plan view of a first antenna unit according to exemplary embodiments.

[0030] FIG. 4 is a partially enlarged plan view of a first radiating portion according to exemplary embodiments.

[0031] FIG. 5 is a partially enlarged plan view of a first antenna unit according to exemplary embodiments.

[0032] FIG. 6 is a partial enlarged plan view of a first sub-antenna unit according to exemplary embodiments.

[0033] FIG. 7 is a schematic plan view showing an antenna structure according to exemplary embodiments.

[0034] FIG. 8 is a schematic plan view showing an antenna structure according to exemplary embodiments.

[0035] FIG. 9 is a schematic plan view showing an antenna structure according to exemplary embodiments.

[0036] FIG. 10 is a schematic plan view showing an antenna structure according to exemplary embodiments.

[0037] FIG. 11 is a schematic plan view showing an antenna structure according to exemplary embodiments.

[0038] FIG. 12 is a schematic cross-sectional view showing an antenna structure according to exemplary embodiments.

[0039] FIG. 13 is a drawing illustrating an example in which an antenna structure according to exemplary embodiments is applied as a relay antenna.

[0040] Embodiments of the present invention provide an antenna structure comprising a plurality of antenna units.

[0041] Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings. However, the following drawings attached to this specification illustrate preferred embodiments of the present invention and, together with the contents of the invention described above, serve to further understand the technical concept of the present invention. Therefore, the present invention should not be interpreted as being limited to the matters described in such drawings.

[0042] The term "first direction" as used herein may refer to the width direction of the dielectric layer (105) and / or the antenna structure. The first direction may refer to the first direction in FIG. 1 and FIGS. 3 to 11.

[0043] The term "second direction" as used herein may refer to a direction perpendicular to the first direction on a plane. The second direction may refer to the longitudinal direction of the dielectric layer (105) and / or the antenna structure. The first direction may refer to the second direction in FIG. 1 and FIGS. 3 to 11.

[0044] The term “symmetrical shape” as used herein may refer to a mirror reflection shape.

[0045] FIG. 1 and FIG. 2 are schematic plan views and cross-sectional views, respectively, illustrating antenna structures according to exemplary embodiments. For convenience of explanation, detailed configurations / structures of antenna units (100, 200) and sub-antenna units (300, 400) are omitted in FIG. 2.

[0046] Referring to FIGS. 1 and 2, the antenna structure may include a dielectric layer (105), antenna units (100, 200) formed on the dielectric layer (105), and sub-antenna units (300, 400).

[0047] The dielectric layer (105) may include, for example, a transparent resin material. For example, the dielectric layer (105) may include a polyester resin such as polyethylene terephthalate, polyethylene isophthalate, polyethylene naphthalate, or polybutylene terephthalate; a cellulose resin such as diacetyl cellulose or triacetyl cellulose; a polycarbonate resin; an acrylic resin such as polymethyl (meth) acrylate or polyethyl (meth) acrylate; a styrene resin such as polystyrene or an acrylonitrile-styrene copolymer; a polyolefin resin such as polyethylene, polypropylene, a polyolefin having a cyclo- or norbornene structure, or an ethylene-propylene copolymer; a vinyl chloride resin; an amide resin such as nylon or an aromatic polyamide; an imide resin; a polyethersulfone resin; a sulfone resin; a polyetheretherketone resin; a sulfated polyphenylene resin; a vinyl alcohol resin; It may include vinylidene chloride resin; vinyl butyral resin; allylate resin; polyoxymethylene resin; epoxy resin; urethane or acrylic urethane resin; silicone resin, etc. These may be used alone or in combination of two or more.

[0048] In some embodiments, an adhesive film such as an optically clear adhesive (OCA), an optically clear resin (OCR), or the like may also be included in the dielectric layer (105).

[0049] In some embodiments, the dielectric layer (105) may include an inorganic insulating material such as silicon oxide, silicon nitride, silicon oxynitride, glass, or the like.

[0050] In one embodiment, the dielectric layer (105) may be provided as a substantially single layer.

[0051] In one embodiment, the dielectric layer (105) may include a multi-layer structure of at least two layers. For example, the dielectric layer (105) may include a substrate layer and an antenna dielectric layer, and may include a point-adhesive layer between the substrate layer and the antenna dielectric layer.

[0052] The dielectric layer (105) forms an impedance or inductance for the antenna units (100, 200) and the sub-antenna units (300, 400), so that the frequency band that the antenna structure can drive or sense can be adjusted. In some embodiments, the dielectric constant of the dielectric layer (105) can be adjusted in the range of about 1.5 to 12. When the dielectric constant exceeds about 12, the driving frequency may be excessively reduced, so that driving in a high-frequency band may not be realized.

[0053] In exemplary embodiments, the antenna structure may include a first antenna unit (100) including a first radiator (110) and a first auxiliary radiator (150). The antenna structure may include a second antenna unit (200) spaced apart from the first antenna unit (100) in a second direction and including a second radiator (210) and a second auxiliary radiator (250).

[0054] The detailed structures of the first antenna unit (100) and the second antenna unit are described later with reference to FIG. 3.

[0055] In exemplary embodiments, the antenna structure may include a first sub-antenna unit (300) and a second sub-antenna unit (400) spaced apart from each other.

[0056] In exemplary embodiments, the first sub-antenna unit (300) may be spaced apart from the second antenna unit (200) with the first antenna unit (100) interposed therebetween, spaced apart from the first antenna unit (100) with the second antenna unit (200) interposed therebetween, or disposed between the first antenna unit (100) and the second antenna unit (200).

[0057] In exemplary embodiments, the second sub-antenna unit (400) may be spaced apart from the second antenna unit (200) with the first antenna unit (100) interposed therebetween, spaced apart from the first antenna unit (100) with the second antenna unit (200) interposed therebetween, or disposed between the first antenna unit (100) and the second antenna unit (200).

[0058] Accordingly, the communication speed can be increased while improving the spatial efficiency of the antenna structure through the first sub-antenna unit (300) and the second sub-antenna unit (400).

[0059] In exemplary embodiments, the first sub-antenna unit (300) and the second sub-antenna unit (400) that are deployed may be spaced apart from the first radiator (110), the first auxiliary radiator (150), the second radiator (210), or the second auxiliary radiator (250) in the second direction, respectively.

[0060] In some embodiments, the first sub-antenna unit (300) may include a first sub-radiator (310), and the second sub-antenna unit (400) may include a second sub-radiator (410).

[0061] For example, the area of ​​each of the first sub-radiator (310) and the second sub-radiator (410) may be less than or equal to the area of ​​the first radiator (110) or the area of ​​the second radiator (210). Accordingly, the driving frequency band of the antenna structure increases, so that a multi-band antenna can be implemented.

[0062] The detailed structures of the first sub-antenna unit (300) and the second sub-antenna unit (400) are described later with reference to FIG. 6.

[0063] FIG. 3 is a partially enlarged plan view of a first antenna unit according to exemplary embodiments.

[0064] Referring to FIG. 3, the first antenna unit (100) may include a first radiator (110), a first auxiliary radiator (150) disposed spaced apart from the first radiator (110), and a first parasitic element (180) disposed between the first radiator (110) and the first auxiliary radiator (150).

[0065] The length of the first radiator (110) in the first direction can increase in the second direction, and the length of the first auxiliary radiator (150) in the first direction can increase in the direction opposite to the second direction. Accordingly, the space occupied by the antenna structure is reduced, thereby improving the space efficiency of the object to which the antenna structure is coupled and suppressing external visibility of the antenna structure.

[0066] The first radiator (110) may include a plurality of radiating sections whose lengths in the first direction sequentially increase in the second direction. Accordingly, a multi-band antenna in which signal transmission and reception in multiple bands are performed from a single radiator may be implemented.

[0067] In some embodiments, the plurality of radiating portions may include a first radiating portion (112), a second radiating portion (114), and a third radiating portion (116) whose lengths in the first direction sequentially increase in the second direction.

[0068] The first antenna unit (100) may include a first transmission line (120) electrically connected to the first radiator (110).

[0069] For example, the first radiating portion (112) can be directly connected to the first transmission line (120). The detailed structure of the first radiating portion (112) is described later with reference to FIG. 4.

[0070] The first radiating portion (112) may be provided as a high-frequency radiating portion of the first radiator (110) or the first antenna unit (100). For example, radiation of the highest frequency band obtained from the first antenna unit (100) may be realized through the first radiating portion (112). For example, the resonant frequency of the first radiating portion (112) may be in the range of about 3.0 GHz to 6.0 GHz.

[0071] In one embodiment, a radiation band corresponding to Sub-6 5G can be obtained from the first radiating unit (112). According to one embodiment, the resonant frequency of the first radiating unit (112) can be in the range of about 3 GHz to 5 GHz, or about 3.1 GHz to 3.8 GHz.

[0072] The second radiating portion (114) is positioned between the first radiating portion (112) and the third radiating portion (116) to physically and electrically connect the first radiating portion (112) and the third radiating portion (116).

[0073] For example, the length of the second radiating portion (114) in the second direction may increase in the first direction. For example, at least one of the upper side and the lower side of the second radiating portion (114) may be an inclined side. In one embodiment, the upper side of the second radiating portion (114) may be an inclined side and the lower side may not include an inclined side.

[0074] In some embodiments, the second radiating portion (114) may have a longer length in the first direction than the first radiating portion (112).

[0075] The second radiating portion (114) may be provided as an intermediate band radiating portion of the first radiator (110) or the first antenna unit (100). For example, the average resonant frequency of the second radiating portion (114) may be lower than the average resonant frequency of the first radiating portion (112). For example, the resonant frequency of the second radiating portion (114) may be in the range of about 1.5 GHz to 3.0 GHz.

[0076] In one embodiment, a radiation band corresponding to the LTE1, LTE2, LTE3, and LTE7 bands can be obtained from the second radiating unit (114). For example, the resonant frequency of the second radiating unit (114) can be in the range of about 1.5 GHz to 3.0 GHz.

[0077] The length of the third radiating portion (116) in the first direction may increase in the second direction. For example, at least one of the upper and lower sides of the third radiating portion (116) may be an inclined side. In one embodiment, the upper and lower sides of the third radiating portion (116) may be inclined sides.

[0078] In some embodiments, the length of the third radiating portion (116) in the first direction may be greater than the length of the first radiating portion (112) in the first direction and the length of the second radiating portion (114) in the first direction.

[0079] In some embodiments, the third radiator (116) may be provided as a low-frequency radiator of the first radiator (110) or the first antenna unit (100). For example, radiation of the lowest frequency band obtained from the first antenna unit (100) may be realized from the third radiator (116).

[0080] In one embodiment, a radiation band corresponding to the LTE5, LTE8, LTE12, LTE17, and LTE20 bands can be obtained from the third radiating unit (116). For example, the resonant frequency of the third radiating unit (116) can be in the range of about 0.7 GHz to 1.0 GHz.

[0081] Fig. 4 is a partially enlarged plan view of the first radiating portion (112). For convenience of explanation, the dielectric layer (105), the second radiating portion (114), the third radiating portion (116), and the first transmission line (120) are omitted in Fig. 4.

[0082] Referring to FIG. 4, the first radiating portion (112) may include a first portion (112a), a second portion (112b), and a third portion (112c) that are substantially formed integrally.

[0083] In some embodiments, the first portion (112a) may be directly connected to the first transmission line (120) and may have a constant length in the first direction.

[0084] The second portion (112b) extends from the first portion (112a) and its length in the first direction can increase in the second direction.

[0085] The third portion (112c) may protrude in the first direction from the second portion (112b). For example, the third portion (112c) may have a shape that protrudes in the second direction from the portion of the second portion (112b) that has the longest length in the first direction.

[0086] According to some embodiments, the upper side of the first portion (112a), the upper side of the second portion (112b), and the side side of the third portion (112c) may form a concave space (CS). By forming the concave space (CS), the resonant frequency of the first radiating portion (112) can be appropriately adjusted and impedance matching can be improved. Accordingly, the radiation characteristics and operating reliability of the first radiator (110) can be improved.

[0087] For example, the first auxiliary radiator (150) may also form a concave space (CS). Accordingly, radiation reliability may be improved and impedance matching may be enhanced.

[0088] In one embodiment, at least a portion of the first parasitic element (180) may be positioned in the concave space (CS). Accordingly, the space occupied by the antenna unit may be reduced, thereby improving the space efficiency of the antenna structure.

[0089] Referring back to FIG. 1, the first antenna unit (100) may further include a first ground pattern (130) arranged around the first transmission line (120) and spaced apart from the first transmission line (120) and the first radiator (110). Through the first ground pattern (130), the impedance matching of the first antenna unit (100) may be improved, and the radiation reliability may be enhanced. For example, the impedance of the first antenna unit (100) may be adjusted to about 50 Ω through the first ground pattern (130).

[0090] In some embodiments, the first ground pattern (130) may be spaced apart from the first auxiliary radiator (150) with the first transmission line (120) therebetween.

[0091] For example, the first ground pattern (130) may include a bend (135) that bends from the first direction to the second direction or from the second direction to the first direction. Accordingly, the radiation characteristics may be further improved.

[0092] In some embodiments, the first ground pattern (130) may be provided as a fourth radiator by electrical coupling with the first radiator (110) and / or the first transmission line (120).

[0093] The fourth radiating portion may be provided as an intermediate band radiating portion of the first antenna unit (100). For example, a radiating band corresponding to LTE1, LTE2, LTE3, LTE7, and Sub-6 5G may be obtained from the fourth radiating portion. For example, the resonant frequency of the fourth radiating portion may be approximately 1.5 GHz to 5.0 GHz.

[0094] The driving frequency bands of the first radiating unit (112), the second radiating unit (114), the third radiating unit (116), and the fourth radiating unit described above are exemplary and may be changed depending on the radiation characteristics of the first antenna unit (100).

[0095] For example, the size / area of ​​the first radiator (110) can be adjusted according to the target frequency band. For example, the overall area of ​​the first radiator (110) can be formed to be small so that the driving frequency band can be shifted to a high frequency band. In this case, the third radiator (116) can be driven in the radiation band of the second radiator (114) described above, and the second radiator (114) can be driven in the radiation band of the first radiator (112) described above. The fourth radiator can be driven in a high frequency band exceeding the radiation band of the fourth radiator described above.

[0096] Multiple radiators having different resonant frequency ranges can be included in one first radiator (110) to implement, for example, a multi-band antenna while improving space efficiency.

[0097] According to one embodiment, the length of the first radiating portion (112) in the second direction may be about 15 mm to 25 mm.

[0098] According to one embodiment, the length of the second radiating portion (114) in the second direction may be about 8 mm to 13 mm.

[0099] According to one embodiment, the length of the third radiating portion (116) in the second direction may be about 15 to 25 mm.

[0100] In one embodiment, the maximum length of the antenna structure in the second direction may be about 80 mm to 120 mm, and the maximum length in the first direction may be about 270 mm to 350 mm.

[0101] In exemplary embodiments, the first radiator (110) and the first auxiliary radiator (150) may have an asymmetrical shape with respect to the first direction.

[0102] Referring again to FIG. 3, the first radiator (110) and the first auxiliary radiator (150) may have an asymmetrical shape with respect to a second virtual line (VL2) extending in the first direction and passing between the first radiator (110) and the first auxiliary radiator (150). Accordingly, when a plurality of antenna units are arranged, signal interference and signal disturbance can be prevented.

[0103] In some embodiments, the first antenna unit (100) may have an asymmetrical shape with respect to a third virtual line (VL3) extending in the second direction and passing through the first radiator (110) and the first auxiliary radiator (150). Accordingly, the first antenna unit (100) may have an asymmetrical shape with respect to the second direction and may also have an asymmetrical shape with respect to the first direction. Accordingly, radiation characteristics in the driving frequency band may be improved.

[0104] In exemplary embodiments, the first auxiliary radiator (150) may include a plurality of auxiliary radiators whose lengths in the first direction sequentially increase in a direction opposite to the second direction.

[0105] The above-described plurality of auxiliary radiating portions may include a first auxiliary radiating portion (152), a second auxiliary radiating portion (154), and a third auxiliary radiating portion (156) whose lengths in the first direction sequentially increase in a direction opposite to the second direction.

[0106] The term “opposite direction to the second direction” as used herein may refer to a direction opposite to the direction in which the length of the first radiator (110) increases in the first direction.

[0107] According to some embodiments, the first auxiliary radiator (152) may have a symmetrical shape with respect to the first radiator (112) in the first direction, and the second auxiliary radiator (154) may have a symmetrical shape with respect to the second radiator (114) in the first direction.

[0108] For example, the first auxiliary radiator (152) can be driven in substantially the same resonant frequency range as the first radiator (112), and the second auxiliary radiator (154) can be driven in substantially the same resonant frequency range as the second radiator (152).

[0109] In some embodiments, the third auxiliary radiating portion (156) may have an asymmetrical shape with respect to the third radiating portion (116) in the first direction. For example, the length of the third auxiliary radiating portion (156) in the second direction may be smaller than the length of the third radiating portion (116) in the second direction. Accordingly, when a plurality of antenna units are arranged, signal interference or signal disturbance between the antenna units may be suppressed.

[0110] In exemplary embodiments, the first antenna unit (100) may further include a first signal pad (122) electrically connected to the first transmission line (120). For example, one end of the first transmission line (120) may be connected to the first radiator (112), and the other end may be connected to the first signal pad (122). The first signal pad (122) may be electrically connected to a driver integrated circuit (IC) chip via an antenna cable. Accordingly, signal transmission and reception and power supply from the driver IC chip to the first radiator (110) may be performed.

[0111] According to one embodiment, the other end of the first transmission line (120) may be provided as a first signal pad (122).

[0112] In one embodiment, the first transmission line (120) may be formed substantially integrally with the first radiator (110) using the same material as the first radiator (110).

[0113] The first antenna unit (100) may include a first ground pad (132) disposed around the first signal pad (122) and spaced apart from the first signal pad (122).

[0114] For example, a pair of first ground pads (132) may be arranged with a first signal pad (122) therebetween. For example, one of the pair of first ground pads (132) may be electrically connected to the first ground pattern (130), and the other may be electrically connected to the first auxiliary radiator (152).

[0115] For example, the first antenna unit (100) may include a first ground connection (160) connecting the first auxiliary radiator (152) and the first ground pad (132).

[0116] According to one embodiment, the extension direction of the first ground connection portion (160) may be parallel to the extension direction of the first transmission line (120).

[0117] One end of the first ground connection portion (160) may be connected to the first auxiliary radiator portion (152), and the other end may be connected to the ground pad (132). The first ground pad (132) may not be electrically connected to the driving IC chip. For example, power or signals may not be transmitted to the first auxiliary radiator portion (150). Accordingly, driving between the antenna units (100, 200) and the sub-antenna units (300, 400) may be performed independently, and antenna beam characteristics may be improved.

[0118] According to one embodiment, the other end of the first ground connection portion (160) may be provided as a first ground pad (132).

[0119] In some embodiments, the shortest distance between the first transmission line (120) and the first ground connection (160) may be about 1 mm to 5 mm, and in one embodiment, about 2 mm to 4 mm. In this range, antenna gain and impedance matching may be improved.

[0120] According to exemplary embodiments, the first parasitic element (180) may be formed in a space between the first radiator (110) and the first auxiliary radiator (150) and spaced apart from the first radiator (110) and the first auxiliary radiator (150). Accordingly, the maximum gain, average gain, and impedance matching of the first antenna unit (100) may be improved.

[0121] In some embodiments, the first parasitic element (180) may include a first parasitic portion (182) extending in a first direction, and a second parasitic portion (184) extending in a second direction and connected to the first parasitic portion (182). For example, the first parasitic portion (182) and the second parasitic portion (184) may be formed substantially integrally using the same material. For example, the second parasitic portion (184) may be connected to one end of the first parasitic portion (182).

[0122] In some embodiments, the first parasitic member (182) may not be positioned between the side closest to the first auxiliary radiator (150) of the first radiator (110) and the side closest to the first radiator (110) of the first auxiliary radiator (150). Accordingly, signal interference may be suppressed while antenna gain characteristics may be improved. Accordingly, the radiation reliability and gain characteristics of the first antenna unit (100) may be improved.

[0123] For example, the second parasitic portion (184) may include a plurality of second sub-parasitic portions (184a) spaced apart from each other on the same line in the second direction. By adjusting the position, shape, and / or size of the plurality of second sub-parasitic portions (184a), the resonant frequency can be finely adjusted and impedance matching can be improved.

[0124] In exemplary embodiments, the first parasitic element (180) may be provided to the fifth radiating portion via electrical coupling with the first radiator (110), the first transmission line (120), and / or the first auxiliary radiator (150).

[0125] For example, the fifth radiator may be driven in substantially the same resonant frequency band as the fourth radiator.

[0126] FIG. 5 is a partially enlarged plan view of a first antenna unit (100) according to exemplary embodiments.

[0127] Referring to FIG. 5, the second parasitic element (184) of the first parasitic element (180) may include a rod shape extending in the second direction. For example, the second parasitic element (184) may be a single rod shape without a separation region. By adjusting the shape of the second parasitic element (184), the resonant frequency band and impedance matching can be finely adjusted.

[0128] Referring back to FIG. 1, the first antenna unit (100) and the second antenna unit (200) may have a symmetrical shape with respect to the first direction. For example, the first antenna unit (100) and the second antenna unit (200) may have a symmetrical shape with respect to a first virtual line (VL1) that passes between the first antenna unit (100) and the second antenna unit (200) and extends in the first direction.

[0129] According to one embodiment, the second antenna unit (200) may have a shape in which the first antenna unit (100) is rotated 180° with respect to the first direction.

[0130] The second antenna unit (200) may include a second radiator (210), a second transmission line (220), a second signal pad (222), a second ground pattern (230), a second ground pad (232), a second auxiliary radiator (250), a second ground connection (260), and a second parasitic element (280).

[0131] The description of the first radiator (110), the first transmission line (120), the first signal pad (122), the first ground pattern (130), the first ground pad (132), the first auxiliary radiator (150), the first ground connection (160), and the first parasitic element (180) can be applied to the second radiator (210), the second transmission line (220), the second signal pad (222), the second ground pattern (230), the second ground pad (232), the second auxiliary radiator (250), the second ground connection (260), and the second parasitic element (280), respectively.

[0132] For example, the first antenna unit (100) and the second antenna unit (200) may have substantially the same resonant frequency band, physical properties, and effects, and may have a symmetrical shape with respect to the first direction.

[0133] FIG. 6 is a partially enlarged plan view of a first sub-antenna unit (300) according to exemplary embodiments.

[0134] Referring to FIG. 6, the first sub-antenna unit (300) may include a first sub-radiator (310) whose length in the first direction increases in the second direction or in the opposite direction to the second direction.

[0135] The first sub-radiator (310) may include a plurality of sub-radiators whose lengths in the first direction sequentially increase in the second direction. Accordingly, a multi-band antenna in which signal transmission and reception in multiple bands are performed from a single sub-radiator may be implemented.

[0136] In some embodiments, the plurality of sub-radiators may include a first sub-radiator (312), a second sub-radiator (314), and a third sub-radiator (316) whose lengths in the first direction sequentially increase in the second direction.

[0137] The first sub-antenna unit (300) may include a first sub-transmission line (320) electrically connected to the first sub-radiator (310).

[0138] For example, the first sub-radiating portion (312) may be directly connected to the first sub-transmission line (320). For example, the first sub-radiating portion (312) may have the same shape as the first radiating portion (112) and may have a smaller area than the first radiating portion (112).

[0139] The first sub-radiating unit (312) may be provided as a high-frequency radiating unit of the first sub-radiator (310) or the first sub-antenna unit (300). For example, radiation of the highest frequency band obtained from the first sub-antenna unit (300) may be realized through the first sub-radiating unit (312). For example, the resonant frequency of the first sub-radiating unit (312) may be in the range of about 3.0 GHz to 6.0 GHz.

[0140] In one embodiment, a radiation band corresponding to Sub-6 5G can be obtained from the first sub-radiator (312). According to one embodiment, the resonant frequency of the first sub-radiator (312) can be in the range of about 3 GHz to 5 GHz, or about 3.1 GHz to 3.8 GHz.

[0141] The second sub-radiating portion (314) is positioned between the first sub-radiating portion (312) and the third sub-radiating portion (316) to physically and electrically connect the first sub-radiating portion (312) and the third sub-radiating portion (316). For example, the second sub-radiating portion (314) may have the same shape as the second radiating portion (114) and a smaller area than the second radiating portion (114).

[0142] For example, the length of the second sub-radiating portion (314) in the first direction may increase in the second direction. For example, at least one of the upper side and the lower side of the second sub-radiating portion (314) may be an inclined side. In one embodiment, the upper side of the second sub-radiating portion (314) may be an inclined side and the lower side may not include an inclined side.

[0143] In some embodiments, the second sub-radiator (314) may have a longer length in the first direction than the first sub-radiator (312).

[0144] The second sub-radiating unit (314) may be provided as an intermediate band radiating unit of the first sub-radiating unit (310) or the first sub-antenna unit (300). For example, the average resonant frequency of the second sub-radiating unit (314) may be lower than the average resonant frequency of the first sub-radiating unit (312). For example, the resonant frequency of the second sub-radiating unit (314) may be in the range of about 1.5 GHz to 3.0 GHz.

[0145] In one embodiment, a radiation band corresponding to the LTE1, LTE2, LTE3, and LTE7 bands may be obtained from the second sub-radiator (314). For example, the resonant frequency of the second sub-radiator (314) may be in the range of about 1.5 GHz to 3.0 GHz.

[0146] The length of the third sub-radiating portion (316) in the first direction may increase in the second direction. For example, at least one of the upper and lower sides of the third sub-radiating portion (316) may be an inclined side. In one embodiment, the upper and lower sides of the third sub-radiating portion (316) may be inclined sides.

[0147] In some embodiments, the length of the third sub-radiating portion (316) in the first direction may be greater than the length of the first sub-radiating portion (312) in the first direction and the length of the second sub-radiating portion (314) in the first direction.

[0148] In some embodiments, the third sub-radiator (316) may be provided as a low-frequency radiator of the first sub-radiator (310) or the first sub-antenna unit (300). For example, radiation of the lowest frequency band obtained from the antenna unit may be realized from the third radiator (116).

[0149] In one embodiment, a radiation band corresponding to the LTE5, LTE8, LTE12, LTE17, and LTE20 bands may be obtained from the third sub-radiator (316). For example, the resonant frequency of the third sub-radiator (316) may be in the range of approximately 0.8 GHz to 1.0 GHz.

[0150] According to some embodiments, the upper surface of the first sub-radiator (312) may be indented to form a concave space (CS). By forming the concave space (CS), the resonant frequency of the first sub-radiator (312) can be appropriately adjusted and impedance matching can be improved. Accordingly, the radiation characteristics and operating reliability of the first sub-radiator (310) can be improved.

[0151] In some embodiments, the first sub-antenna unit (300) may further include a first sub-ground pattern (330) disposed around the first sub-transmission line (320) and spaced apart from the first sub-transmission line (320) and the first sub-radiator (310). Through the first sub-ground pattern (330), the impedance matching of the first sub-antenna unit (300) may be improved and the radiation reliability may be enhanced. For example, the impedance of the first sub-antenna unit (300) may be adjusted to about 50 Ω through the first sub-ground pattern (330).

[0152] For example, the first sub-ground pattern (330) may include a sub-bent portion (335) that is bent from the first direction to the second direction or from the second direction to the first direction. Accordingly, the radiation characteristics may be further improved.

[0153] In some embodiments, the first sub-ground pattern (330) may be provided as a fourth sub-radiator by electrical coupling with the first sub-radiator (310) and / or the first sub-transmission line (320).

[0154] The fourth sub-radiating unit may be provided as an intermediate band radiating unit of the first sub-antenna unit (300). For example, a radiation band corresponding to LTE1, LTE2, LTE3, LTE7, and Sub-6 5G may be obtained from the fourth sub-radiating unit. For example, the resonant frequency of the fourth sub-radiating unit may be approximately 1.5 GHz to 5.0 GHz.

[0155] The driving frequency bands of the first sub-radiating unit (312), the second sub-radiating unit (314), the third sub-radiating unit (316), and the fourth sub-radiating unit described above are exemplary and may be changed depending on the radiation characteristics of the first sub-antenna unit (300).

[0156] For example, the size / area of ​​the first sub-radiator (310) can be adjusted according to the target frequency band. For example, the overall area of ​​the first sub-radiator (310) can be formed to be small so that the driving frequency band can be shifted to a high frequency band. In this case, the third sub-radiator (316) can be driven in the radiation band of the second sub-radiator (314) described above, and the second sub-radiator (314) can be driven in the radiation band of the first sub-radiator (312) described above. The fourth sub-radiator can be driven in a high frequency band exceeding the radiation band of the fourth sub-radiator described above.

[0157] Multiple sub-radiators having different resonant frequency ranges can be included in one first sub-radiator (310) to implement, for example, a multi-band antenna while improving space efficiency.

[0158] According to one embodiment, the length of the first sub-radiator (312) in the second direction may be about 10 mm to 25 mm.

[0159] According to one embodiment, the length of the second sub-radiator (314) in the second direction may be about 5 mm to 13 mm.

[0160] According to one embodiment, the length of the third sub-radiator (316) in the second direction may be about 10 to 25 mm.

[0161] In one embodiment, the maximum length of the antenna structure in the second direction may be about 270 mm to 350 mm, and the maximum length in the first direction may be about 25 mm to 50 mm.

[0162] In exemplary embodiments, the first sub-antenna unit (300) may further include a first sub-signal pad (322) electrically connected to the first sub-transmission line (320). For example, one end of the first sub-transmission line (320) may be connected to the first sub-radiator (312), and the other end may be connected to the first sub-signal pad (322). The first sub-signal pad (322) may be electrically connected to a driver integrated circuit (IC) chip via an antenna cable. Accordingly, signal transmission and reception and power supply from the driver IC chip to the first sub-radiator (310) may be performed.

[0163] According to one embodiment, the other end of the first sub-transmission line (320) may be provided as a first sub-signal pad (322).

[0164] According to one embodiment, the first sub-transmission line (320) may be formed substantially integrally with the first sub-radiator (310) using the same material as the first sub-radiator (310).

[0165] The first sub-antenna unit (300) may include a first sub-ground pad (332) disposed around the first sub-signal pad (322) and spaced apart from the first sub-signal pad (322).

[0166] Referring again to FIG. 1, in some embodiments, the first sub-antenna unit (300) and the second sub-antenna unit (400) may have a symmetrical shape with respect to the first direction.

[0167] According to one embodiment, the second sub-antenna unit (400) may have a shape in which the first sub-antenna unit (300) is rotated 180° with respect to the first direction.

[0168] The second sub-antenna unit (400) may include a second sub-radiator (410), a second sub-transmission line (420), a second sub-signal pad (422), a second sub-ground pattern (430), and a second sub-ground pad (432).

[0169] The description of the first sub-radiator (310), the first sub-transmission line (320), the first sub-signal pad (322), the first sub-ground pattern (330), and the first sub-ground pad (332) can be applied to the second sub-radiator (410), the second sub-transmission line (420), the second sub-signal pad (422), the second sub-ground pattern (430), and the second sub-ground pad (432), respectively.

[0170] For example, the first sub-antenna unit (300) and the second sub-antenna unit (400) may have substantially the same resonant frequency band, physical properties, and effects, and may have a symmetrical shape with respect to the first direction.

[0171] As illustrated in FIG. 1, a first sub-antenna unit (300) and a second sub-antenna unit (400) can be placed between the first antenna unit (100) and the second antenna unit (200).

[0172] For example, the first auxiliary radiator (150) may be arranged adjacent to the first sub-radiator (310), and the second auxiliary radiator (250) may be arranged adjacent to the second sub-radiator (410). Accordingly, the first auxiliary radiator (150) and the first sub-radiator (310) may be coupled to provide a first sub-radiating unit, and the second auxiliary radiator (250) may be coupled to the second sub-radiator (410) to provide a second sub-radiating unit. Through the first and second sub-radiating units, the antenna performance in a resonant frequency band of about 0.8 GHz to 1.7 GHz may be improved.

[0173] FIG. 7 is a schematic plan view showing an antenna structure according to exemplary embodiments.

[0174] Referring to FIG. 7, the first sub-antenna unit (300) may be placed between the first antenna unit (100) and the second antenna unit (200), and the second sub-antenna unit (400) may be placed spaced apart from the first sub-antenna unit (300) with the second antenna unit (200) interposed therebetween.

[0175] For example, a first sub-radiator (310) may be placed between a first auxiliary radiator (150) and a second auxiliary radiator (250), and a second radiator (210) and a second sub-radiator (410) may be placed adjacent to each other. Accordingly, adjacent radiators (110, 210), auxiliary radiators (150, 250), and sub-radiators (310, 410) may be coupled to improve multi-band antenna performance.

[0176] For example, the second sub-antenna unit (400), the second antenna unit (200), the first sub-antenna unit (300), and the first antenna unit (100) can be sequentially arranged in the second direction. Accordingly, the total area of ​​the antenna structure can be reduced and space efficiency can be further improved.

[0177] FIG. 8 is a schematic plan view showing an antenna structure according to exemplary embodiments.

[0178] Referring to FIG. 8, the first sub-antenna unit (300) may be placed between the first antenna unit (100) and the second antenna unit (200), and the second sub-antenna unit (400) may be placed spaced apart from the first sub-antenna unit (300) with the first antenna unit (100) interposed therebetween.

[0179] For example, a first sub-radiator (310) may be placed between a first auxiliary radiator (150) and a second auxiliary radiator (250), and the first radiator (110) and the second sub-radiator (410) may be placed adjacent to each other. Accordingly, adjacent radiators (110, 210), auxiliary radiators (150, 250), and sub-radiators (310, 410) may be coupled to improve multi-band antenna performance.

[0180] For example, the second antenna unit (200), the first sub-antenna unit (300), the first antenna unit (100), and the second sub-antenna unit (400) can be sequentially arranged in the second direction. Accordingly, the total area of ​​the antenna structure can be reduced and space efficiency can be further improved.

[0181] FIG. 9 is a schematic plan view showing an antenna structure according to exemplary embodiments.

[0182] Referring to FIG. 9, the first antenna unit (100) and the second antenna unit (200) can be placed between the first sub-antenna unit (300) and the second sub-antenna unit (400). Accordingly, the separation distance between the antenna units (100, 200) and the separation distance between the sub-antenna units (300, 400) can be sufficiently secured, thereby improving the isolation of the antenna structure and enhancing the operating reliability.

[0183] For example, the first radiator (110) and the first sub-radiator (310) may be arranged adjacently, and the second radiator (210) and the second sub-radiator (410) may be arranged adjacently. Accordingly, the adjacent radiators (110, 210) and sub-radiators (310, 410) may be coupled, thereby improving the multi-band antenna performance.

[0184] FIG. 10 is a schematic plan view showing an antenna structure according to exemplary embodiments.

[0185] Referring to FIG. 10, the first antenna unit (100) and the second antenna unit (200) may be disposed between the first sub-antenna unit (300) and the second sub-antenna unit (400). For example, the first radiator (110) and the second sub-radiator (410) may be disposed adjacently, and the second radiator (210) and the first sub-radiator (310) may be disposed adjacently. Accordingly, the adjacent radiators (110, 210) and sub-radiators (310, 410) may be coupled, thereby improving multi-band antenna performance.

[0186] In exemplary embodiments, the positions of the first sub-antenna unit (300) and the second sub-antenna unit (400) may be switched with respect to each other in consideration of the resonant frequency band, isolation, antenna gain and / or signal loss.

[0187] The separation distance between the antenna units (100, 200), the separation distance between the sub-antenna units (300, 400), and / or the separation distance between the antenna units (100, 200) and the sub-antenna units (300, 400) may be greater than half a wavelength (λ / 2) of the average wavelength (λ) of the antenna structure. Accordingly, the isolation of the antenna structure may be improved and the operating reliability may be enhanced.

[0188] For example, separate ports (a total of four) may be connected to each of the antenna units (100, 200) and the sub-antenna units (300, 400) so that they can be individually driven (active-type antenna). Through the arrangement structure of the above-described antenna units (100, 200) and the sub-antenna units (300, 400), the communication speed can be increased while maintaining or improving the isolation and antenna gain.

[0189] The antenna units (100, 200) and / or the sub-antenna units (300, 400) may include silver (Ag), gold (Au), copper (Cu), aluminum (Al), platinum (Pt), palladium (Pd), chromium (Cr), titanium (Ti), tungsten (W), niobium (Nb), tantalum (Ta), vanadium (V), iron (Fe), manganese (Mn), cobalt (Co), nickel (Ni), zinc (Zn), tin (Sn), molybdenum (Mo), calcium (Ca), or an alloy containing at least one of these. These may be used alone or in combination of two or more thereof.

[0190] In one embodiment, the antenna units (100, 200) and / or the sub-antenna units (300, 400) may include silver (Ag) or a silver alloy (e.g., a silver-palladium-copper (APC) alloy), or copper (Cu) or a copper alloy (e.g., a copper-calcium (CuCa) alloy) for low-resistance implementation and fine-line width patterning.

[0191] In some embodiments, the antenna units (100, 200) and / or the sub-antenna units (300, 400) may include a transparent conductive oxide such as indium tin oxide (ITO), indium zinc oxide (IZO), indium zinc tin oxide (ITZO), or zinc oxide (ZnOx).

[0192] In some embodiments, the antenna units (100, 200) and / or the sub-antenna units (300, 400) may include a laminated structure of a transparent conductive oxide layer and a metal layer, and may have, for example, a two-layer structure of a transparent conductive oxide layer-metal layer, or a three-layer structure of a transparent conductive oxide layer-metal layer-transparent conductive oxide layer. In this case, the flexible characteristics may be improved by the metal layer, while the resistance may be lowered, thereby improving the signal transmission speed, and the corrosion resistance and transparency may be improved by the transparent conductive oxide layer.

[0193] The antenna units (100, 200) and / or the sub-antenna units (300, 400) may include a blackening treatment portion. Accordingly, the reflectivity on the surface of the antenna unit may be reduced, thereby reducing pattern visibility due to light reflection.

[0194] In one embodiment, a blackening layer may be formed by converting the surface of a metal layer included in the antenna units (100, 200) and / or the sub-antenna units (300, 400) into a metal oxide or a metal sulfide. In one embodiment, a blackening layer, such as a black material coating layer or a plating layer, may be formed on the antenna units (100, 200), the sub-antenna units (300, 400) and / or the metal layer. The black material or plating layer may include an oxide, a sulfide, an alloy, or the like containing silicon, carbon, copper, molybdenum, tin, chromium, molybdenum, nickel, cobalt, or at least one of these.

[0195] The composition and thickness of the blackening layer can be adjusted taking into account the reflectivity reduction effect and antenna radiation characteristics.

[0196] FIG. 11 is a schematic plan view showing an antenna structure according to exemplary embodiments.

[0197] Referring to FIG. 11, the antenna structure may further include a dummy mesh pattern (170) arranged around the antenna units (100, 200) and the sub-antenna units (300, 400). For example, the dummy mesh pattern (170) may be electrically and physically separated from the antenna units (100, 200) and the sub-antenna units (300, 400) through a separation region (175).

[0198] For example, a conductive layer including the above-described metal or alloy can be formed on the dielectric layer (105). The conductive layer can be etched along the profile of the above-described antenna unit to form a mesh structure. Accordingly, the antenna units (100, 200), sub-antenna units (300, 400), and the dummy mesh pattern (170) can be formed to be spaced apart from each other by the separation region (175).

[0199] In some embodiments, the antenna units (100, 200) and the sub-antenna units (300, 400) may also share a mesh structure. Accordingly, the transmittance of the antenna units (100, 200) and the sub-antenna units (300, 400) is improved, and the optical characteristics around the antenna units (100, 200) and the sub-antenna units (300, 400) may be uniformized as the dummy mesh pattern (170) is distributed. Accordingly, the antenna units (100, 200) and the sub-antenna units (300, 400) may be prevented from being visually recognized.

[0200] In one embodiment, the antenna units (100, 200) and sub-antenna units (300, 400) may comprise the mesh structure as a whole.

[0201] In one embodiment, for power efficiency, at least some of the transmission lines (120, 220) and sub-transmission lines (320, 420) (e.g., signal pads (122, 222) and sub-signal pads (322, 422)) may include a solid structure.

[0202] In one embodiment, at least some of the ground patterns (130, 230), sub-ground patterns (330, 430), and / or ground connections (160, 260) (e.g., ground pads (132, 232) and sub-ground pads (332, 432)) may comprise a solid structure.

[0203] In one embodiment, when the ground patterns (130, 230) and the sub-ground patterns (330, 430) are placed in an area of ​​the object that is not visible to the user, the ground patterns (130, 230) and the sub-ground patterns (330, 430) may have a solid structure.

[0204] For example, when the antenna units (100, 200) and sub-antenna units (300, 400) are placed in an area not visible to the user in a target object to which the antenna structure is applied, the antenna units (100, 200) and sub-antenna units (300, 400) may include a solid structure.

[0205] The dummy mesh pattern (170) may include intersecting conductive lines forming a mesh structure therein. In some embodiments, the dummy mesh pattern (170) may include segmented regions where the conductive lines are cut. Accordingly, the radiation characteristics of the antenna units (100, 200) and the sub-antenna units (300, 400) may be prevented from being disturbed by the dummy mesh pattern (170).

[0206] FIG. 12 is a schematic cross-sectional view showing an antenna structure according to exemplary embodiments.

[0207] Referring to FIG. 12, the antenna units (100, 200) and the sub-antenna units (300, 400) may be disposed between the first dielectric layer (105a) and the second dielectric layer (105b). For example, the antenna units (100, 200) and the sub-antenna units (300, 400) may be sandwiched or embedded between the first and second dielectric layers (105a, 105b).

[0208] As the first and second dielectric layers (105a, 105b) are arranged above and below the antenna units (100, 200) and the sub-antenna units (300, 400), the dielectric and radiation environments around the antenna units (100, 200) and the sub-antenna units (300, 400) can be uniformized.

[0209] In some embodiments, the second dielectric layer (105b) may be provided as a coating layer, an insulating layer and / or a protective film of the antenna units (100, 200), sub-antenna units (300, 400) or the antenna structure.

[0210] FIG. 13 is a drawing illustrating an example in which an antenna structure according to exemplary embodiments is applied as a relay antenna.

[0211] For example, FIG. 13 is a schematic drawing showing a router shape in which an antenna structure is attached to a target (500).

[0212] For example, FIG. 13 may show a form in which an antenna structure having the shape illustrated in FIG. 1 is attached to a target object (500) by rotating 180° with respect to the second direction.

[0213] In exemplary embodiments, the object (500) to which the antenna structure is coupled may include public transportation such as buses and subways, building structures, TVs, monitors, various mobile devices, etc.

[0214] Referring to FIG. 13, the antenna structure may have a structure that can be fixed to, for example, a building structure such as a window, wall, or ceiling of a public transportation system, a window, a vehicle, a sign, a TV, a monitor, etc. For example, the above-described antenna units (100, 200) and sub-antenna units (300, 400) may be inserted or attached within a substrate.

[0215] For example, the substrate may be provided with a dielectric layer (105) as illustrated in FIG. 1. As described with reference to FIG. 12, the first dielectric layer (105a) and the second dielectric layer (105b) may be provided together as the substrate, and antenna units (100, 200) and sub-antenna units (300, 400) may be embedded within the substrate. The substrate may be provided as a window of a public transportation system, a building, various decorative structures, an indication sign, a window, one side of a TV or monitor, etc.

[0216] In some embodiments, the antenna structure described above may be attached to a substrate in the form of a film.

[0217] In some embodiments, the antenna units (100, 200) and the sub-antenna units (300, 400) may be connected to an external circuit board via signal pads (122, 222) and sub-signal pads (322, 422), respectively. Accordingly, the communication speed is improved and the antenna units (100, 200) and the sub-antenna units (300, 400) may be driven independently, respectively. For example, the external circuit board may be a PCB (Printed Circuit Board) board including a rigid board or the like.

[0218] For example, a conductive bonding structure such as an anisotropic conductive film (ACF) may be attached onto the signal pads (122, 222), the sub-signal pads (322, 422), the ground pads (132, 232), and / or the sub-ground pads (332, 432), and then the bonding area of ​​the external circuit board may be placed on the conductive bonding structure. Thereafter, the external circuit board may be connected to the antenna units (100, 200) and the sub-antenna units (300, 400) through a heat treatment / pressure process.

[0219] The antenna cable can be electrically connected to the conductive bonding structure to supply power to the signal pads (122, 222) and the sub-signal pads (322, 422).

[0220] The antenna cable may be, for example, embedded in the target object (500) and coupled to an external power source, an integrated circuit chip, or an integrated circuit board. Accordingly, power may be supplied to the antenna units (100, 200) and sub-antenna units (300, 400), thereby enabling antenna radiation.

[0221] As illustrated in FIG. 13, the above-described antenna units (100, 200) and sub-antenna units (300, 400) can be attached to a target object (500) (e.g., a window of a public transportation such as a bus or subway) and electrically connected to a public Wi-Fi repeater within the public transportation, for example, via an antenna cable. Accordingly, a multi-band wireless communication network with a high communication speed within the public transportation can be implemented.

Claims

1. A first antenna unit including a first radiator and a first auxiliary radiator having an asymmetrical shape with respect to a first direction; A second antenna unit including a second radiator and a second auxiliary radiator spaced apart from the first antenna unit in a second direction perpendicular to the first direction and having an asymmetrical shape with respect to the first direction; A first sub-antenna spaced apart from the second antenna unit with the first antenna unit interposed therebetween, or spaced apart from the first antenna unit with the second antenna unit interposed therebetween, or arranged between the first antenna unit and the second antenna unit; and An antenna structure comprising a second sub-antenna spaced apart from the second antenna unit with the first antenna unit interposed therebetween, or spaced apart from the first antenna unit with the second antenna unit interposed therebetween, or arranged between the first antenna unit and the second antenna unit.

2. An antenna structure according to claim 1, wherein the length of the first radiator in the first direction increases in the second direction, and the length of the first auxiliary radiator in the first direction increases in a direction opposite to the second direction.

3. An antenna structure according to claim 1, wherein the first radiator includes a first radiating portion, a second radiating portion, and a third radiating portion, the lengths of which in the first direction sequentially increase in the second direction.

4. In claim 3, further comprising a first transmission line electrically connected to the first radiator, The above first radiation part A first portion directly connected to the first transmission line and having a constant length in the first direction; a second portion extending from the first portion and having a length in the first direction that increases in the second direction; and An antenna structure including a third portion protruding in the first direction from the second portion.

5. An antenna structure according to claim 3, wherein the second radiating portion has a length in the first direction greater than that of the first radiating portion, and the length of the second radiating portion in the first direction increases in the second direction.

6. An antenna structure according to claim 3, wherein the third radiating portion has a length in the first direction greater than that of the second radiating portion, and the length of the third radiating portion in the first direction increases in the second direction.

7. An antenna structure according to claim 3, wherein the first auxiliary radiator includes a first auxiliary radiator, a second auxiliary radiator, and a third auxiliary radiator, the lengths of which in the first direction sequentially increase in a direction opposite to the second direction.

8. An antenna structure according to claim 7, wherein the first auxiliary radiating portion has a symmetrical shape with respect to the first radiating portion and the first direction, and the second auxiliary radiating portion has a symmetrical shape with respect to the second radiating portion and the first direction.

9. An antenna structure according to claim 7, wherein the third auxiliary radiating portion has an asymmetrical shape with respect to the third radiating portion and the first direction.

10. An antenna structure according to claim 1, further comprising a first parasitic element disposed between the first radiator and the first auxiliary radiator.

11. An antenna structure according to claim 10, wherein the first parasitic element includes a first parasitic portion extending in the first direction, and a second parasitic portion connected to the first parasitic portion and extending in the second direction.

12. An antenna structure according to claim 1, wherein the first antenna unit and the second antenna unit have a symmetrical shape with respect to the first direction.

13. In claim 1, the first sub-antenna unit includes a first sub-radiator whose length in the first direction increases in the second direction, An antenna structure, wherein the second sub-antenna unit includes a second sub-radiator whose length in the first direction increases in a direction opposite to the second direction.

14. An antenna structure according to claim 1, wherein the first sub-antenna unit and the second sub-antenna unit are disposed between the first antenna unit and the second antenna unit.

15. An antenna structure according to claim 14, wherein the second sub-antenna unit has a symmetrical shape with respect to the first sub-antenna unit with respect to the first direction.

16. In claim 1, the first sub-antenna unit is disposed between the first antenna unit and the second antenna unit, An antenna structure wherein the second sub-antenna unit is spaced apart from the first sub-antenna unit with the second antenna unit therebetween, or is spaced apart from the first sub-antenna unit with the first antenna unit therebetween.

17. An antenna structure according to claim 1, wherein the first antenna unit and the second antenna unit are disposed between the first sub-antenna unit and the second sub-antenna unit.

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