TWI763439B - Antenna structure and wireless communication device - Google Patents

Antenna structure and wireless communication device Download PDF

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TWI763439B
TWI763439B TW110113788A TW110113788A TWI763439B TW I763439 B TWI763439 B TW I763439B TW 110113788 A TW110113788 A TW 110113788A TW 110113788 A TW110113788 A TW 110113788A TW I763439 B TWI763439 B TW I763439B
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frequency band
antenna
resonance
slot
radiating
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TW110113788A
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TW202243323A (en
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黃傑超
許向榮
陳彥廷
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台達電子工業股份有限公司
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Abstract

An antenna structure is provided, which includes a substrate, an antenna unit and a metal ground part. The substrate includes a first surface and a second surface; the antenna unit disposed on the first surface includes a radiating part, a feeding part and a feeding line, where the feeding line includes a first transmission line and a second transmission line that are perpendicular to each other and connected to each other, and the first transmission line is connected to the radiating part via the feeding part; and the metal ground part disposed on the second surface has an edge which is perpendicular to projection of the radiating part to the metal ground part; and a resonance slot is disposed on the metal ground part, and its position corresponds between projection of the second transmission line to the metal ground part and the edge. In addition, a wireless communication device is also disclosed herein.

Description

天線結構以及無線通訊裝置 Antenna structure and wireless communication device

本發明是有關於一種天線結構以及無線通訊裝置。The present invention relates to an antenna structure and a wireless communication device.

一般而言，為了在sub-7 GHz的頻帶下滿足第五代新無線電（5G new radio，5G NR）標準的高需求，需要對天線進一步進行設計，以處理高操作頻寬以及天線之間的高隔離度（isolation），進而獲得高資料傳輸速率（data rate）以及多輸入多輸出系統（multi-input multi-output，MIMO）的高吞吐量（throughput）。In general, in order to meet the high demands of the 5th generation new radio (5G NR) standard in the sub-7 GHz frequency band, the antenna needs to be further designed to handle the high operating bandwidth and the interference between the antennas. High isolation (isolation), thereby obtaining high data rate (data rate) and high throughput (multi-input multi-output, MIMO) system (multi-input multi-output, MIMO).

在5G NR標準之前的系統中，天線的操作頻帶通常是比較小的。藉由一般的天線設計，就能滿足這樣的頻寬要求。然而，這樣的天線設計往往無法滿足高操作頻寬以及天線之間的高隔離度。因此，要如何基於5G NR標準設計出滿足高操作頻寬以及天線之間的高隔離度之天線，是本領域技術人員急欲解決的問題。In systems prior to the 5G NR standard, the operating frequency band of the antenna was usually relatively small. Such bandwidth requirements can be met by general antenna design. However, such antenna designs often fail to meet high operating bandwidth and high isolation between antennas. Therefore, how to design an antenna that satisfies high operating bandwidth and high isolation between antennas based on the 5G NR standard is a problem that those skilled in the art are eager to solve.

本發明提供一種天線結構，包括基板、天線單元以及金屬接地部。基板包括第一表面以及第二表面；天線單元設置於第一表面，且包括輻射部、饋入部以及饋入線，其中饋入線包括相互垂直且相互連接的第一傳輸線以及第二傳輸線，且第一傳輸線經由饋入部連接輻射部；以及金屬接地部設置於該第二表面，其中金屬接地部具有邊緣，且邊緣垂直於輻射部對金屬接地部的投影；以及共振槽孔設置於金屬接地部上，其位置對應於第二傳輸線對金屬接地部的投影以及邊緣之間。 The present invention provides an antenna structure, including a substrate, an antenna unit and a metal ground portion. The substrate includes a first surface and a second surface; the antenna unit is disposed on the first surface, and includes a radiating part, a feeding part and a feeding line, wherein the feeding line includes a first transmission line and a second transmission line that are perpendicular to each other and connected to each other, and the first The transmission line is connected to the radiation part through the feeding part; and the metal ground part is arranged on the second surface, wherein the metal ground part has an edge, and the edge is perpendicular to the projection of the radiation part to the metal ground part; and the resonance slot is arranged on the metal ground part, Its position corresponds to the projection of the second transmission line to the metal ground and between the edges.

本發明提供一種無線通訊裝置，包括基板、至少二天線單元以及至少一金屬接地部。基板包括第一表面以及第二表面；至少二天線單元設置於第一表面，且至少二天線單元中的相鄰二者互相垂直，其中至少二天線單元包括至少二輻射部、至少二饋入部以及至少二饋入線，以及至少二饋入線中的各者包括相互垂直且相互連接的第一傳輸線以及第二傳輸線，其中至少二饋入線的第一傳輸線分別經由至少二饋入部連接至少二輻射部；以及至少一金屬接地部設置於第二表面，其中至少一隔離槽孔設置在至少一金屬接地部上，其位置分別對應於至少二天線單元中的相鄰二者對至少一金屬接地部的投影之間，至少一金屬接地部具有至少二邊緣，其中至少二邊緣中的相鄰二者互相垂直，且至少二邊緣分別垂直於至少二輻射部對金屬接地部的投影，以及至少二共振槽孔設置在至少一金屬接地部上， 其位置對應於至少二饋入線的第二傳輸線對金屬接地部的投影以及至少二邊緣中的對應者之間。 The present invention provides a wireless communication device, comprising a substrate, at least two antenna units and at least one metal grounding portion. The substrate includes a first surface and a second surface; at least two antenna units are disposed on the first surface, and adjacent two of the at least two antenna units are perpendicular to each other, wherein the at least two antenna units include at least two radiating parts, at least two feeding parts, and at least two feed lines, and each of the at least two feed lines includes a first transmission line and a second transmission line that are perpendicular to each other and are connected to each other, wherein the first transmission lines of the at least two feed lines are respectively connected to the at least two radiating parts via the at least two feed parts; and at least one metal grounding portion is arranged on the second surface, wherein at least one isolation slot is arranged on the at least one metal grounding portion, and its position corresponds to the projection of the at least two adjacent ones of the at least two antenna units to the at least one metal grounding portion respectively At least one metal grounding portion has at least two edges, wherein adjacent two of the at least two edges are perpendicular to each other, and the at least two edges are respectively perpendicular to the projection of the at least two radiating portions to the metal grounding portion, and the at least two resonance slots set on at least one metal grounding part, Its position corresponds to the projection of the second transmission line of the at least two feed lines to the metal ground portion and between the corresponding ones of the at least two edges.

基於上述，本發明提供的無線通訊裝置可藉由金屬接地板的共振槽孔大大增加天線的操作頻寬。此外，更可藉由隔離槽孔以及垂直的天線單元之位置設計進一步增加天線之間的隔離度。 Based on the above, the wireless communication device provided by the present invention can greatly increase the operating bandwidth of the antenna through the resonant slot holes of the metal ground plate. In addition, the isolation between the antennas can be further increased by the positional design of the isolation slot holes and the vertical antenna units.

第1圖根據本發明的實施例繪示無線通訊裝置100的仰視透視圖。第2圖根據本發明的實施例繪示無線通訊裝置100的俯視圖。第3圖根據本發明的實施例繪示無線通訊裝置中的一個天線單元的俯視圖。第4圖根據本發明的實施例繪示無線通訊裝置100的仰視圖。同時參照第1圖至第4圖，無線通訊裝置100可包括基板110、成對的天線單元120(1)~120(2)以及金屬接地部130。FIG. 1 illustrates a bottom perspective view of a wireless communication device 100 according to an embodiment of the present invention. FIG. 2 illustrates a top view of the wireless communication device 100 according to an embodiment of the present invention. FIG. 3 is a top view of an antenna unit in a wireless communication device according to an embodiment of the present invention. FIG. 4 illustrates a bottom view of the wireless communication device 100 according to an embodiment of the present invention. Referring to FIGS. 1 to 4 at the same time, the wireless communication device 100 may include a substrate 110 , a pair of antenna units 120 ( 1 ) to 120 ( 2 ), and a metal ground portion 130 .

值得注意的是，雖然本實施例的天線單元120(1)~120(2)之數量為2且金屬接地部130之數量為1，然而，天線單元120(1)~120(2)之數量也可以為大於2的任意正偶數，且金屬接地部130之數量也可以為大於1的任意正整數。此外，天線單元120(1)~120(2)之數量為金屬接地部130之數量的兩倍。It should be noted that, although the number of the antenna units 120(1)-120(2) in this embodiment is 2 and the number of the metal ground portions 130 is 1, the number of the antenna units 120(1)-120(2) It can also be any positive even number greater than 2, and the number of metal ground portions 130 can also be any positive integer greater than 1. In addition, the number of the antenna elements 120 ( 1 ) to 120 ( 2 ) is twice the number of the metal ground portions 130 .

舉例而言，第5圖根據本發明的另一實施例繪示無線通訊裝置100的仰視透視圖。參照第5圖，此實施例示出了一個基板110、八個天線單元120(1)~120(8)、四個金屬接地部130(1)~130(4)的例子。For example, FIG. 5 illustrates a bottom perspective view of the wireless communication device 100 according to another embodiment of the present invention. Referring to FIG. 5, this embodiment shows an example of one substrate 110, eight antenna elements 120(1) to 120(8), and four metal ground portions 130(1) to 130(4).

再者，同時參照回第1圖至第4圖，基板110可包括相互對應的第一表面111以及第二表面112，其中第2圖中所繪示的是第一表面111，且第4圖所繪示的是第二表面112。天線單元120(1)~120(2)可設置於第一表面111，且金屬接地部130可設置於第二表面112。此外，第3圖更進一步繪示天線單元120(1)的詳細結構。Furthermore, referring back to FIGS. 1 to 4 at the same time, the substrate 110 may include a first surface 111 and a second surface 112 corresponding to each other, wherein the first surface 111 is shown in FIG. The second surface 112 is shown. The antenna units 120 ( 1 ) to 120 ( 2 ) can be disposed on the first surface 111 , and the metal grounding portion 130 can be disposed on the second surface 112 . In addition, FIG. 3 further illustrates the detailed structure of the antenna unit 120(1).

在一些實施例中，基板110可以是由絕緣的材質所製成的印刷電路板(printed circuit board，PCB)，其中基板110的材質可以是鐵氟龍(PTFE)或環氧樹酯(FR4)等常用以製造PCB的材質。藉此，可將天線單元120(1)~120(2)直接以印刷的方式設置在基板110上。 In some embodiments, the substrate 110 may be a printed circuit board (printed circuit board, PCB) made of an insulating material, wherein the material of the substrate 110 may be Teflon (PTFE) or epoxy resin (FR4) and other materials commonly used in the manufacture of PCBs. In this way, the antenna units 120( 1 ) to 120( 2 ) can be directly disposed on the substrate 110 by printing.

天線單元120(1)~120(2)可互相垂直，且天線單元120(1)可包括輻射部121、饋入部122、接地部123以及饋入線124，其中饋入線124可包括相互垂直且相互連接的第一傳輸線1241以及第二傳輸線1242，且第一傳輸線1241可經由饋入部122連接輻射部121。 The antenna units 120 ( 1 ) to 120 ( 2 ) may be perpendicular to each other, and the antenna unit 120 ( 1 ) may include a radiating portion 121 , a feeding portion 122 , a ground portion 123 and a feeding line 124 , wherein the feeding line 124 may include mutually perpendicular and mutually The first transmission line 1241 and the second transmission line 1242 are connected, and the first transmission line 1241 can be connected to the radiation part 121 via the feeding part 122 .

此外，饋入線124更可包括饋入點1243，且天線單元120(1)可藉由饋入點1243從訊號源接收饋入訊號。 In addition, the feeding line 124 may further include a feeding point 1243 , and the antenna unit 120 ( 1 ) can receive the feeding signal from the signal source through the feeding point 1243 .

值得注意的是，天線單元120(2)也可具有與天線單元120(1)相同的上述結構，因此，在此不再加以贅述。 It is worth noting that the antenna unit 120(2) may also have the same structure as the antenna unit 120(1), and thus will not be repeated here.

藉由上述天線單元120(1)~120(2)的設置方式，天線單元120(1)之極化方向可以為y方向，而天線單元120(2)之極化方向可以為x方向。如此一來，將可使天線單元120(1)~120(2)之隔離度(isolation)大大地提升(例如，隔離度降低至-10dB左右)。 With the above arrangement of the antenna units 120(1)-120(2), the polarization direction of the antenna unit 120(1) may be the y direction, and the polarization direction of the antenna unit 120(2) may be the x direction. In this way, the isolation of the antenna units 120 ( 1 ) to 120 ( 2 ) can be greatly improved (eg, the isolation is reduced to about -10 dB).

在一些實施例中，天線單元120(1)~120(2)皆可以是倒F形的平面形倒F天線(planar inverted-F antenna，PIFA)。此外，天線單元120(1)~120(2)也可以是具有上述饋入線結構之其他類型的天線(例如，單極天線（monopole antenna）），且天線單元120(1)~120(2)也可以是具有上述饋入線結構之不同類型的天線（例如，天線單元120(1)為PIFA天線，而天線單元120(2)為單極天線），並沒有對天線單元120(1)~120(2)的類型有別的限制。In some embodiments, the antenna units 120 ( 1 ) to 120 ( 2 ) can all be inverted-F-shaped planar inverted-F antennas (PIFA). In addition, the antenna units 120( 1 ) to 120( 2 ) may also be other types of antennas (eg, monopole antennas) having the above-mentioned feed line structure, and the antenna units 120( 1 ) to 120( 2 ) It can also be a different type of antenna with the above-mentioned feed line structure (for example, the antenna unit 120(1) is a PIFA antenna, and the antenna unit 120(2) is a monopole antenna), and there is no alignment between the antenna units 120(1)~120. The type of (2) has other restrictions.

在一些實施例中，若天線單元120(1)~120(2)皆為PIFA天線，天線單元120(1)的輻射部121可包括第一輻射部1211、第二輻射部1212以及第三輻射部1213，其中第三輻射部1213可以為L形。In some embodiments, if the antenna units 120(1)-120(2) are all PIFA antennas, the radiation portion 121 of the antenna unit 120(1) may include a first radiation portion 1211, a second radiation portion 1212 and a third radiation portion part 1213, wherein the third radiating part 1213 may be L-shaped.

此外，第一輻射部1211的第一端連接於第二輻射部1212以及第三輻射部1213之間，且第一輻射部1211的第二端連接於饋入部122。此外，第三輻射部1213可連接接地部123，接地部123可經由貫孔（via）連接金屬接地部130。In addition, the first end of the first radiating part 1211 is connected between the second radiating part 1212 and the third radiating part 1213 , and the second end of the first radiating part 1211 is connected to the feeding part 122 . In addition, the third radiation portion 1213 may be connected to the ground portion 123 , and the ground portion 123 may be connected to the metal ground portion 130 via a via.

在一些實施例中，金屬接地部130可以是倒L形，且金屬接地部130可以是由銅箔等金屬材質製成。In some embodiments, the metal grounding portion 130 may be an inverted L shape, and the metal grounding portion 130 may be made of a metal material such as copper foil.

再者，金屬接地部130的隔離槽孔131可設置在金屬接地部130上，其位置可分別對應於天線單元120(1)~120(2)對金屬接地部130的投影之間，其中隔離槽孔131之數量可相等於金屬接地部130之數量。Furthermore, the isolation slots 131 of the metal grounding portion 130 may be disposed on the metal grounding portion 130, and their positions may correspond to the projections of the antenna elements 120(1) to 120(2) on the metal grounding portion 130, wherein the isolation slots 131 are isolated from each other. The number of the slot holes 131 may be equal to the number of the metal ground portions 130 .

在一些實施例中，隔離槽孔131為矩形，其中隔離槽孔131與天線單元120(1)~120(2)對金屬接地部130的投影之間的距離D1可大於1mm。此外，隔離槽孔131之寬度W1可以是3.6mm，且隔離槽孔131之長度L1可以是天線單元120(1)~120(2)的操作頻帶之中心頻率的四分之一倍波長。In some embodiments, the isolation slot 131 is rectangular, wherein the distance D1 between the isolation slot 131 and the projection of the antenna units 120( 1 ) to 120( 2 ) to the metal ground portion 130 may be greater than 1 mm. In addition, the width W1 of the isolation slot 131 may be 3.6 mm, and the length L1 of the isolation slot 131 may be a quarter wavelength of the center frequency of the operating frequency band of the antenna elements 120(1)-120(2).

詳細而言，天線單元120(1)~120(2)的操作頻帶之中心頻率的波長可受到基板110的材質影響（即，不同材質可對應不同的波長（wavelength in free space））。In detail, the wavelength of the center frequency of the operating frequency band of the antenna units 120(1)-120(2) may be affected by the material of the substrate 110 (ie, different materials may correspond to different wavelengths in free space).

換言之，天線單元120(1)~120(2)的操作頻帶之中心頻率的波長主要與基板110的材質之等效介電常數（effective dielectric constant，Dkeff）有關（即，大約將介電常數（dielectric constant，Dk）加上1並除以2所獲得的數值）。舉例而言，鐵氟龍的介電常數為3.0至4.5，而FR4的介電常數為3.5。In other words, the wavelength of the center frequency of the operating frequency band of the antenna units 120(1)-120(2) is mainly related to the effective dielectric constant (Dkeff) of the material of the substrate 110 (that is, approximately the dielectric constant ( The value obtained by adding 1 to the dielectric constant, Dk) and dividing by 2). For example, Teflon has a dielectric constant of 3.0 to 4.5, while FR4 has a dielectric constant of 3.5.

進一步而言，可先對上述等效介電常數開根號以獲得的一個等效數值，且天線單元120(1)~120(2)的操作頻帶之中心頻率的波長便與此等效數值成反比。Further, an equivalent value can be obtained by taking the root sign of the above-mentioned equivalent dielectric constant, and the wavelength of the center frequency of the operating frequency band of the antenna units 120(1)-120(2) is the equivalent value inversely proportional.

藉由上述的隔離槽孔131的設置方式，將可使天線單元120(1)~120(2)與隔離槽孔131產生共振，以阻擋天線單元120(1)~120(2)所產生的訊號，進而大大增加天線單元120(1)~120(2)之隔離度（例如，隔離度進一步降低至-20dB以下）。With the above-mentioned arrangement of the isolation slots 131, the antenna units 120(1)-120(2) will resonate with the isolation slots 131, so as to block the antenna elements 120(1)-120(2) from generating the resonance. signal, thereby greatly increasing the isolation of the antenna units 120(1)-120(2) (for example, the isolation is further reduced to below -20dB).

第6圖根據本發明的實施例繪示兩個天線單元的隔離度與頻率的示意圖。同時參照第1圖以及第6圖，藉由上述的隔離槽孔131的設置方式，天線單元120(1)~120(2)之隔離度可明顯降低至-20dB以下。換言之，天線單元120(1)~120(2)之隔離度可滿足第五代新無線電(5G new radio，5G NR)標準的隔離度需求(即，小於-20dB)。 FIG. 6 is a schematic diagram illustrating isolation and frequency of two antenna units according to an embodiment of the present invention. Referring to FIG. 1 and FIG. 6 at the same time, the isolation of the antenna units 120( 1 ) to 120( 2 ) can be significantly reduced to below -20dB by the above-mentioned arrangement of the isolation slot 131 . In other words, the isolation of the antenna units 120 ( 1 ) to 120 ( 2 ) can meet the isolation requirements of the fifth generation new radio (5G new radio, 5G NR) standard (ie, less than -20 dB).

再者，同時參照回第1圖至第4圖，金屬接地部130具有邊緣E1~E2，其中邊緣E1~E2可互相垂直，且邊緣E1~E2可分別垂直於天線單元120(1)~120(2)中的輻射部對金屬接地部130的投影。 Furthermore, referring back to FIGS. 1 to 4 at the same time, the metal ground portion 130 has edges E1-E2, wherein the edges E1-E2 may be perpendicular to each other, and the edges E1-E2 may be perpendicular to the antenna units 120(1)-120, respectively. The projection of the radiation portion in (2) to the metal ground portion 130 .

換言之，邊緣E1可垂直於輻射部121靠近饋入部122的一部份對金屬接地部130的投影。相似地，邊緣E2也可具有相似的設置方式。 In other words, the edge E1 may be perpendicular to the projection of a portion of the radiation portion 121 close to the feeding portion 122 to the metal ground portion 130 . Similarly, edge E2 may also have a similar arrangement.

在一些實施例中，邊緣E1~E2之長度可以是天線單元120(1)~120(2)的操作頻帶之中心頻率的二分之一倍波長。 In some embodiments, the lengths of the edges E1-E2 may be one-half wavelength of the center frequency of the operating frequency band of the antenna elements 120(1)-120(2).

再者，共振槽孔132(1)~132(2)可設置在金屬接地部130上，其位置可對應於天線單元120(1)~120(2)中的饋入線的第二傳輸線對金屬接地部130的投影以及邊緣E1~E2中的對應者之間。 Furthermore, the resonant slots 132(1)-132(2) may be disposed on the metal ground portion 130, and the positions thereof may correspond to the second transmission line-to-metal of the feed lines in the antenna units 120(1)-120(2). The projection of the ground portion 130 and the corresponding ones of the edges E1 to E2.

換言之，共振槽孔132(1)的位置可以在饋入線124的第二傳輸線1242對金屬接地部130的投影以及邊緣E1之間。相似地，共振槽孔132(2)的位置也可具有相似的設置方式。 In other words, the position of the resonance slot 132(1) may be between the projection of the second transmission line 1242 of the feed line 124 to the metal ground 130 and the edge E1. Similarly, the location of the resonance slot 132(2) can also have a similar arrangement.

在一些實施例中，共振槽孔132(1)~132(2)之形狀可以是L形，且共振槽孔132(1)~132(2)之長度(即，長度L2以及長度L3的長度總和)可以是天線單元 120(1)~120(2)的操作頻帶之中心頻率的四分之一倍波長。 In some embodiments, the shape of the resonance slots 132(1)-132(2) may be L-shaped, and the lengths of the resonance slots 132(1)-132(2) (ie, the lengths of the lengths L2 and L3) sum) can be the antenna element 1/4 wavelength of the center frequency of the operating frequency band of 120(1)~120(2).

在一些實施例中，共振槽孔132(1)~132(2)之寬度W2可以是1mm，且共振槽孔132(1)~132(2)分別與天線單元120(1)~120(2)對金屬接地部130的投影之間的距離D2可大於1mm。 In some embodiments, the width W2 of the resonant slots 132(1)-132(2) may be 1 mm, and the resonant slots 132(1)-132(2) are respectively connected to the antenna units 120(1)-120(2) The distance D2 between the projections of ) to the metal ground portion 130 may be greater than 1 mm.

換言之，共振槽孔132(1)與天線單元120(1)的饋入部122對金屬接地部130的投影之間的距離D2可大於1mm。相似地，共振槽孔132(2)也可具有相似的設置方式。 In other words, the distance D2 between the resonance slot 132(1) and the projection of the feeding portion 122 of the antenna unit 120(1) to the metal ground portion 130 may be greater than 1 mm. Similarly, the resonant slot 132(2) may also have a similar arrangement.

在一些實施例中，天線單元120(1)~120(2)的輻射部(例如，天線單元120(1)的輻射部121)自身可共振以產生一個第一共振頻帶，且共振槽孔132(1)~132(2)可分別與天線單元120(1)~120(2)的輻射部共振以產生與此第一共振頻帶相鄰的一個第二共振頻帶，其中天線單元120(1)~120(2)的操作頻帶可包括此第一共振頻帶以及此第二共振頻帶。 In some embodiments, the radiating portions of the antenna units 120(1)-120(2) (eg, the radiating portion 121 of the antenna unit 120(1)) may resonate themselves to generate a first resonant frequency band, and the resonating slot 132 (1) to 132(2) can resonate with the radiating portions of the antenna units 120(1) to 120(2) respectively to generate a second resonance frequency band adjacent to the first resonance frequency band, wherein the antenna unit 120(1) The operating frequency bands of ~120(2) may include the first resonant frequency band and the second resonant frequency band.

藉由上述共振槽孔132(1)~132(2)的設置方式，可大大地增加天線單元120(1)~120(2)的操作頻帶。 With the arrangement of the resonant slots 132(1)-132(2), the operating frequency bands of the antenna units 120(1)-120(2) can be greatly increased.

第7圖根據本發明的實施例繪示兩個天線單元的反射損失的操作頻帶(反射係數與頻率)的示意圖。同時參照第1圖以及第7圖，一般第五代新無線電(5G new radio，5G NR)標準的頻帶n77/n78為3.3GHz至4.2GHz(頻寬為900MHz)。藉由上述共振槽孔 132(1)~132(2)的設置方式，天線單元120(1)~120(2)的操作頻帶為3.19~4.46GHz(反射損失小於-10dB的頻帶)。換言之，天線單元120(1)~120(2)的操作頻帶可同時滿足5G NR標準的頻帶n77/n78。 FIG. 7 is a schematic diagram illustrating the operating frequency band (reflection coefficient and frequency) of the reflection loss of two antenna units according to an embodiment of the present invention. Referring to FIG. 1 and FIG. 7 at the same time, the frequency band n77/n78 of the fifth-generation new radio (5G new radio, 5G NR) standard is generally 3.3 GHz to 4.2 GHz (bandwidth is 900 MHz). By the above resonance slot In the arrangement of 132(1)~132(2), the operating frequency band of the antenna units 120(1)~120(2) is 3.19~4.46GHz (the frequency band with the reflection loss less than -10dB). In other words, the operating frequency bands of the antenna units 120(1)-120(2) can simultaneously satisfy the frequency bands n77/n78 of the 5G NR standard.

如此一來，同時參照回第1圖至第4圖，天線單元120(1)、共振槽孔132(1)、基板110之一部份以及金屬接地部130之一部份(此基板110之一部份以及此金屬接地部130之一部份對應於天線單元120(1)以及共振槽孔132(1))可形成一個共振結構。相似地，天線單元120(2)、共振槽孔132(2)、基板110之另一部份以及金屬接地部130之另一部份(此基板110之另一部份以及此金屬接地部130之另一部份對應於天線單元120(2)以及共振槽孔132(2))也可形成另一個共振結構。 In this way, referring back to FIGS. 1 to 4 at the same time, the antenna unit 120 ( 1 ), the resonance slot 132 ( 1 ), a part of the substrate 110 and a part of the metal grounding part 130 (the part of the substrate 110 ) A portion and a portion of the metal ground portion 130 corresponding to the antenna unit 120(1) and the resonant slot 132(1)) may form a resonant structure. Similarly, the antenna unit 120( 2 ), the resonant slot 132( 2 ), the other part of the substrate 110 and the other part of the metal ground 130 (the other part of the substrate 110 and the metal ground 130 Another part corresponding to the antenna unit 120(2) and the resonant slot 132(2)) can also form another resonant structure.

基於上述，藉由上述的無線通訊裝置100，可利用上述的天線結構進一步在sub-7GHz的頻帶下滿足5G NR標準的高操作頻寬以及天線單元之高隔離度。 Based on the above, with the above-mentioned wireless communication device 100, the above-mentioned antenna structure can further satisfy the high operating bandwidth of the 5G NR standard and the high isolation of the antenna unit in the sub-7GHz frequency band.

綜上所述，本發明提供的無線通訊裝置可利用相鄰天線單元之間的隔離槽孔以及天線單元之垂直設置方式，大大增加天線單元的隔離度。此外，本發明提供的無線通訊裝置更可利用鄰近天線單元的饋入線之共振槽孔，大大增加天線單元的操作頻寬。如以一來，可在sub-7GHz的頻帶下滿足5G NR標準的高操作頻寬以及天線單元之高隔離度。 To sum up, the wireless communication device provided by the present invention can greatly increase the isolation of the antenna units by utilizing the isolation slots between adjacent antenna units and the vertical arrangement of the antenna units. In addition, the wireless communication device provided by the present invention can further utilize the resonance slot of the feed line adjacent to the antenna unit, thereby greatly increasing the operating bandwidth of the antenna unit. In this way, the high operating bandwidth of the 5G NR standard and the high isolation of the antenna unit can be met in the sub-7GHz frequency band.

雖然本發明已以實施例揭露如上，然其並非用以限定本發明，任何所屬技術領域中具有通常知識者，在不脫離本發明的精神和範圍內，當可作些許的更動與潤飾，故本發明的保護範圍當視後附的申請專利範圍所界定者為準。Although the present invention has been disclosed above by the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the scope of the appended patent application.

100:無線通訊裝置 110:基板 111:第一表面 112:第二表面 120(1)~120(8):天線單元 121:輻射部 1211:第一輻射部 1212:第二輻射部 1213:第三輻射部 122:饋入部 123:接地部 124:饋入線 1241:第一傳輸線 1242:第二傳輸線 1243:饋入點 130、130(1)~130(4):金屬接地部 131:隔離槽孔 E1~E2:邊緣 132(1)~132(2):共振槽孔 L1~L3:長度 W1~W2:寬度 D1~D2:距離 100: Wireless communication device 110: Substrate 111: First surface 112: Second Surface 120(1)~120(8): Antenna unit 121: Radiation Department 1211: First Radiation Department 1212: Second Radiation Department 1213: Third Radiation Department 122: Feeding Department 123: Ground 124: Feed line 1241: First Transmission Line 1242: Second Transmission Line 1243: Feed Point 130, 130(1)~130(4): Metal ground part 131: Isolation slotted hole E1~E2: Edge 132(1)~132(2): Resonance slot L1~L3: length W1~W2: Width D1~D2: Distance

第1圖根據本發明的實施例繪示無線通訊裝置的仰視透視圖。 FIG. 1 is a bottom perspective view of a wireless communication device according to an embodiment of the present invention.

第2圖根據本發明的實施例繪示無線通訊裝置的俯視圖。 FIG. 2 is a top view of a wireless communication device according to an embodiment of the present invention.

第3圖根據本發明的實施例繪示無線通訊裝置中的一個天線單元的俯視圖。 FIG. 3 is a top view of an antenna unit in a wireless communication device according to an embodiment of the present invention.

第4圖根據本發明的實施例繪示無線通訊裝置的仰視圖。 FIG. 4 is a bottom view of a wireless communication device according to an embodiment of the present invention.

第5圖根據本發明的另一實施例繪示無線通訊裝置的仰視透視圖。 FIG. 5 is a bottom perspective view of a wireless communication device according to another embodiment of the present invention.

第6圖根據本發明的實施例繪示兩個天線單元的隔離度與頻率的示意圖。 FIG. 6 is a schematic diagram illustrating isolation and frequency of two antenna units according to an embodiment of the present invention.

第7圖根據本發明的實施例繪示兩個天線單元的反射損失的操作頻帶的示意圖。 FIG. 7 is a schematic diagram illustrating the operating frequency bands of the reflection losses of two antenna units according to an embodiment of the present invention.

100:無線通訊裝置 100: Wireless communication device

110:基板 110: Substrate

120(1)~120(2):天線單元 120(1)~120(2): Antenna unit

130:金屬接地部 130: Metal ground

131:隔離槽孔 131: Isolation slotted hole

E1~E2:邊緣 E1~E2: Edge

132(1)~132(2):共振槽孔 132(1)~132(2): Resonance slot

L1~L3:長度 L1~L3: length

W1~W2:寬度 W1~W2: Width

D1~D2:距離 D1~D2: Distance

Claims (9)

一種天線結構，包括：一基板，包括一第一表面以及一第二表面；一天線單元，設置於該第一表面，且包括一輻射部、一饋入部以及一饋入線，其中該饋入線包括相互垂直且相互連接的一第一傳輸線以及一第二傳輸線，且該第一傳輸線經由該饋入部連接該輻射部；以及一金屬接地部，設置於該第二表面，其中該金屬接地部具有一邊緣，且該邊緣垂直於該輻射部對該金屬接地部的投影；以及一共振槽孔設置於該金屬接地部上，其位置對應於該第二傳輸線對該金屬接地部的投影以及該邊緣之間，其中該共振槽孔之形狀為L形，且該共振槽孔之長度為該天線單元的一操作頻帶之中心頻率的四分之一倍波長。 An antenna structure, comprising: a substrate including a first surface and a second surface; an antenna unit disposed on the first surface and including a radiating part, a feeding part and a feeding line, wherein the feeding line includes a first transmission line and a second transmission line that are perpendicular to each other and connected to each other, and the first transmission line is connected to the radiating part through the feeding part; and a metal grounding part disposed on the second surface, wherein the metal grounding part has a an edge, and the edge is perpendicular to the projection of the radiating portion to the metal ground portion; and a resonance slot is disposed on the metal ground portion, the position of which corresponds to the projection of the second transmission line to the metal ground portion and the edge of the edge wherein the shape of the resonance slot is L-shaped, and the length of the resonance slot is a quarter wavelength of the center frequency of an operating frequency band of the antenna unit. 如請求項1所述之天線結構，其中該共振槽孔之寬度為1mm，且該共振槽孔與該天線單元對該金屬接地部的投影之間的距離大於1mm。 The antenna structure of claim 1, wherein the width of the resonance slot is 1 mm, and the distance between the resonance slot and the projection of the antenna unit to the metal ground portion is greater than 1 mm. 如請求項1所述之天線結構，其中該邊緣之長度為該天線單元的一操作頻帶之中心頻率的二分之一倍波長。 The antenna structure of claim 1, wherein the length of the edge is one-half wavelength of the center frequency of an operating frequency band of the antenna unit. 如請求項1所述之天線結構，其中該輻射部 為倒F形，且該饋入線為L形，其中該輻射部自身共振以產生一第一共振頻帶，且該共振槽孔與該輻射部共振以產生與該第一共振頻帶相鄰的一第二共振頻帶，其中該天線單元的一操作頻帶包括該第一共振頻帶以及該第二共振頻帶。 The antenna structure of claim 1, wherein the radiating portion It is an inverted F shape, and the feed line is an L shape, wherein the radiating portion resonates itself to generate a first resonance frequency band, and the resonance slot resonates with the radiating portion to generate a first resonance frequency band adjacent to the first resonance frequency band. Two resonant frequency bands, wherein an operating frequency band of the antenna unit includes the first resonant frequency band and the second resonant frequency band. 一種無線通訊裝置，包括：一基板，包括一第一表面以及一第二表面；至少二天線單元，設置於該第一表面，且該至少二天線單元中的相鄰二者互相垂直，其中該至少二天線單元包括至少二輻射部、至少二饋入部以及至少二饋入線，以及該至少二饋入線中的各者包括相互垂直且相互連接的一第一傳輸線以及一第二傳輸線，其中該至少二饋入線的該第一傳輸線分別經由該至少二饋入部連接該至少二輻射部；以及至少一金屬接地部，設置於該第二表面，其中至少一隔離槽孔設置在該至少一金屬接地部上，其位置分別對應於該至少二天線單元中的相鄰二者對該至少一金屬接地部的投影之間，該至少一金屬接地部具有至少二邊緣，其中該至少二邊緣中的相鄰二者互相垂直，且該至少二邊緣分別垂直於該至少二輻射部對該金屬接地部的投影，以及至少二共振槽孔設置在該至少一金屬接地部上，其位 置對應於該至少二饋入線的該第二傳輸線對該金屬接地部的投影以及該至少二邊緣中的對應者之間。 A wireless communication device, comprising: a substrate including a first surface and a second surface; at least two antenna units disposed on the first surface, and adjacent two of the at least two antenna units are perpendicular to each other, wherein the At least two antenna units include at least two radiating parts, at least two feeding parts, and at least two feeding lines, and each of the at least two feeding lines includes a first transmission line and a second transmission line that are perpendicular to each other and connected to each other, wherein the at least two feeding lines The first transmission line of the two feed-in lines is respectively connected to the at least two radiation parts through the at least two feed-in parts; and at least one metal grounding part is disposed on the second surface, wherein at least one isolation slot is disposed in the at least one metal grounding part , the positions of the at least two adjacent ones of the at least two antenna units respectively correspond to the projections of the at least one metal grounding portion, and the at least one metal grounding portion has at least two edges, wherein the adjacent ones of the at least two edges are The two are perpendicular to each other, and the at least two edges are respectively perpendicular to the projection of the at least two radiating parts to the metal grounding part, and at least two resonant slot holes are arranged on the at least one metal grounding part, and their positions are It is placed between the projection of the second transmission line corresponding to the at least two feed lines to the metal ground portion and the corresponding one of the at least two edges. 如請求項5所述之無線通訊裝置，其中該至少一隔離槽孔為矩形，且該至少二共振槽孔之形狀為L形，其中該至少一隔離槽孔之長度以及該至少二共振槽孔之長度為該至少二天線單元的一操作頻帶之中心頻率的四分之一倍波長，且該至少二邊緣之長度為該至少二天線單元的該操作頻帶之中心頻率的二分之一倍波長。 The wireless communication device of claim 5, wherein the at least one isolation slot is rectangular, and the shape of the at least two resonance slots is L-shape, wherein the length of the at least one isolation slot and the at least two resonance slots are The length of the at least two antenna elements is one-quarter wavelength of the center frequency of an operating frequency band, and the length of the at least two edges is one-half wavelength of the center frequency of the operating frequency band of the at least two antenna elements. . 如請求項5所述之無線通訊裝置，其中該至少一隔離槽孔之寬度為3.6mm，且該至少二共振槽孔之寬度為1mm，其中該至少一隔離槽孔與該至少二天線單元中的相鄰二者對該金屬接地部的投影之間的距離大於1mm。 The wireless communication device of claim 5, wherein the width of the at least one isolation slot is 3.6 mm, and the width of the at least two resonance slots is 1 mm, wherein the at least one isolation slot is connected to the at least two antenna units. The distance between the projections of the adjacent two of the metal ground parts is greater than 1mm. 如請求項5所述之無線通訊裝置，其中該至少二輻射部自身共振以產生一第一共振頻帶，且該至少二共振槽孔分別與該至少二輻射部共振以產生與該第一共振頻帶相鄰的一第二共振頻帶，其中該至少二天線單元的一操作頻帶包括該第一共振頻帶以及該第二共振頻帶。 The wireless communication device as claimed in claim 5, wherein the at least two radiating parts resonate themselves to generate a first resonance frequency band, and the at least two resonant slots resonate with the at least two radiating parts respectively to generate the first resonance frequency band An adjacent second resonant frequency band, wherein an operating frequency band of the at least two antenna units includes the first resonant frequency band and the second resonant frequency band. 如請求項5所述之無線通訊裝置，其中該至少二輻射部為倒F形，且該至少二饋入線為L形，其中該 至少一隔離槽孔阻擋該至少二天線單元之間的訊號傳送以增加該至少二天線單元之一隔離度。 The wireless communication device of claim 5, wherein the at least two radiating portions are inverted F-shapes, and the at least two feeding lines are L-shaped, wherein the at least two radiating portions are L-shaped The at least one isolation slot blocks the signal transmission between the at least two antenna units to increase an isolation degree of the at least two antenna units.
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