WO2017024665A1 - 组合天线系统及移动终端 - Google Patents

组合天线系统及移动终端 Download PDF

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Publication number
WO2017024665A1
WO2017024665A1 PCT/CN2015/091239 CN2015091239W WO2017024665A1 WO 2017024665 A1 WO2017024665 A1 WO 2017024665A1 CN 2015091239 W CN2015091239 W CN 2015091239W WO 2017024665 A1 WO2017024665 A1 WO 2017024665A1
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Prior art keywords
shell
antenna system
side shell
tunable
antenna
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PCT/CN2015/091239
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English (en)
French (fr)
Inventor
姚德才
杨攀
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宇龙计算机通信科技(深圳)有限公司
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Publication of WO2017024665A1 publication Critical patent/WO2017024665A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular to a combined antenna system and a mobile terminal having the combined antenna system.
  • an antenna system composed of a PIFA/slot antenna is proposed in the prior art, and the system controls the on and off of the grounding point through a switch on the circuit board to generate a required frequency band, but a large number of switch structures in the radio frequency link
  • the introduction increases the additional loss of the antenna system, thereby reducing the radiation efficiency of the antenna system; in addition, the system has a large dependence on the feed/land position and the length and width of the whole machine, and the height of both sides of the feed is high. There is a deep mutual influence between the frequency branch and the low frequency branch. Since the resonant frequency of the antenna system itself is not easy to debug, any size deviation occurring in the production process will cause the resonance frequency of the antenna system to shift. The loss of the antenna system is increased, and on the other hand, the stability of the high frequency and ultra high frequency parts of the antenna is easily reduced, and the frequency bands of the high frequency and the ultra high frequency are narrowed, thereby reducing the reliability of the whole product.
  • Another object of the present invention is to provide a mobile terminal having the above combined antenna system.
  • an embodiment of the first aspect of the present invention provides a combined antenna system for a mobile terminal, including a metal case disposed at a rear portion of the mobile terminal, the metal case including a first side shell, a shell and a second side shell, and a first slit disposed between the first side shell and the middle shell and a second slit disposed between the middle shell and the second side shell; wherein
  • the first side shell is provided with a plurality of tunable antennas covering a high frequency band; and the second side shell is provided with a multi-section tunable antenna covering the high frequency band, the middle frequency band and the low frequency band at the same time.
  • the low frequency band refers to a frequency of 0.68 G to 1 GHz
  • the middle frequency band refers to a frequency of 1.5 GHz to 2.2 GHz
  • the high frequency band refers to a frequency of 2.2 GHz to 2.7 GHz.
  • the first slit and the second slit may be filled with a non-metal substance.
  • the middle shell main ground, the tunable antenna and the multi-interval tunable antenna are respectively disposed on the first side shell and the second side shell, and utilize the first side shell and The second side shell acts as a radiation main body, thereby solving the problem that the antenna and the metal coexist in a large area, thereby realizing the matching of the product with the full metal outer casing, and effectively reducing the loss of the human body signal; in addition, the tunable antenna is dominant in the present scheme.
  • the multi-interval tunable antenna simultaneously dominates the low frequency band, the middle frequency band and the high frequency band to achieve coverage of the medium to medium frequency band, low frequency band and high frequency band.
  • the structure can avoid the high frequency band of the multi-frequency antenna. Interacting with the mid-band and low-band, and by tuning the multi-interval tunable antenna and each tunable antenna separately, so that the product has maximum radiation efficiency in the low, medium and high frequency bands, Therefore, the product can meet the performance requirements of various network standards of future mobile terminals.
  • the combined antenna system in the above embodiment provided by the present invention may further have the following additional technical features:
  • the first side shell is provided with two tunable antennas, and two of the tunable antennas are respectively located at two ends of the first side shell.
  • the first side shell includes a bottom plate and an end plate and a side plate connected to the bottom plate; one of the tunable antennas is a stereo coupling antenna, and the stereo coupling antenna includes the movement a first metal trace electrically connected to the RF feed source inside the terminal, and the first metal trace and the bottom plate, the end plate and the side plate respectively have a first gap, a second gap, and a first The three gaps are such that the first metal trace simultaneously transfers energy to the bottom plate, the end plate and the side plate by coupling.
  • the electrical length, shape and feeding position of the first metal trace can be controlled to generate high frequency resonance, and the first metal trace is coupled with the bottom plate, the side plate and the end plate respectively, and is passed through Adjusting the size of the first gap, the second gap, and the third gap tunable the respective frequency bands of the stereocoupled antenna to reduce its radiation loss.
  • two tunable antennas can be disposed in the solution, which are the above-mentioned stereo coupling antennas.
  • the combined antenna system further includes: a grounding device located in the first slit, and grounding the first side shell, and the grounding device separating the first gap into a plurality of sub-slits; wherein a length of the sub-slits opposite to the stereo coupling antenna is 10 mm to 30 mm.
  • the middle portion of the first side shell is connected with the middle shell (main ground) by a steel sheet, and two tunable antennas are disposed at both ends of the first side shell to ensure the stereo coupling antenna by using the spatial distance.
  • the isolation between the other tunable antennas; further, the portion between the two tunable antennas on the first side shell opens vacancies of other components, such as camera holes and/or earphone holes and/or external sockets, etc.
  • the steel sheet divides the first slit into a plurality of sub-slits, and controls the position and the stereo coupling antenna by setting the position of the steel sheet on the first slit
  • the length of the opposing sub-slit is 10 mm to 30 mm to tuned the intermediate frequency portion of the combined antenna system.
  • the tunable antenna is an ultra-wideband antenna;
  • the ultra-wideband antenna includes a main feed point disposed on the first side shell and a ground feed disposed at the first gap a point, wherein the primary feed point is located at one end of the housing away from another tunable antenna, and the primary feed point is electrically connected to a radio frequency feed inside the mobile terminal, the ground feed point Located between the primary feed point and another of the tunable antennas.
  • two tunable antennas can be provided in the solution, which are all the above ultra-wideband antennas.
  • the spacing between the primary feed point and the ground feed point is adjustable.
  • the ground feed point is located between the main feed point and the steel sheet, and the high frequency of the ultra-wideband antenna can be realized by controlling the position of the feed source and adjusting the spacing between the main feed point and the ground feed point. Adjustment of the resonance point.
  • the multi-interval tunable antenna includes: a second metal trace electrically connected to the second side shell and a radio frequency feed inside the mobile terminal; and a third metal walk a line spaced apart from the second metal trace, and the third metal trace is electrically connected to the second side shell.
  • the multi-interval tunable antenna covers the high frequency band, the middle frequency band, and the low frequency band by controlling the electrical length, the number of branches, the branch shape, and the feeding position of the second metal trace and the third metal trace branch, and
  • the coupling between the second metal trace and the third metal trace or between the branches of the metal traces generates resonance, so by adjusting the branch between the second metal trace and the third metal trace or each metal trace.
  • the multi-interval tunable antenna further includes: an adjustable device disposed inside the mobile terminal and electrically connected to the third metal trace, and logic of the adjustable device The value is adjustable.
  • the tunable device includes a capacitor, an inductor, an RF switch, or a matching circuit composed of a capacitor and an inductor.
  • the logic value may be a capacitance value and/or an inductance value or a logic signal of the RF switch, and the logic value may be changed.
  • the software of the mobile terminal can be matched with the logic value, and then the software is implemented by updating the software during use of the product. Control of logical values.
  • the first side shell is located on an upper side of the middle shell, and the second side shell is located on a lower side of the middle shell.
  • the tunable antenna on the first side of the shell dominates the high frequency operation
  • the multi-interval tunable antenna on the second side shell mainly dominates the intermediate frequency operation and the low frequency operation. This design can reduce the human hand and head when the mobile terminal performs the call function. The impact of the department on the signal.
  • An embodiment of the second aspect of the present invention provides a mobile terminal comprising the combined antenna system described in any of the above embodiments.
  • the mobile terminal provided by the embodiment of the second aspect of the present invention has all the beneficial effects of the combined antenna system by providing the combined antenna system described in any of the above embodiments, and details are not described herein again.
  • FIG. 1 is a schematic structural diagram of a combined antenna system according to an embodiment of the present invention.
  • Figure 2 is an enlarged schematic view of the portion A shown in Figure 1;
  • FIG. 3 is a schematic view showing the positional relationship between the first metal trace and the first side shell according to the present invention.
  • Figure 4 is an enlarged schematic view of the portion B shown in Figure 1;
  • Fig. 5 is an enlarged schematic view showing a portion C shown in Fig. 1.
  • FIGS. 1 through 5 A combined antenna system in accordance with some embodiments of the present invention is described below with reference to FIGS. 1 through 5.
  • a combined antenna system provided by an embodiment of the first aspect of the present invention is provided for a mobile terminal, including a metal shell disposed at a rear portion of the mobile terminal, where the metal shell includes a first side shell 100, a middle shell 200, and a first a two-sided shell 300, and a first slit 400 disposed between the first side shell 100 and the middle shell 200 and a second slit 500 disposed between the middle shell 200 and the second side shell 300; wherein, the first side shell A plurality of tunable antennas covering the high frequency band are disposed on the 100; the second side shell 300 is provided with a multi-range tunable antenna 310 covering the high frequency band, the middle frequency band and the low frequency band at the same time.
  • the low frequency band refers to a frequency of 0.68 to 1 GHz
  • the middle frequency band refers to a frequency of 1.5 GHz to 2.2 GHz
  • the high frequency band refers to a frequency of 2.2 GHz to 2.8 GHz.
  • the first side shell 100 is provided with two tunable antennas, and the two tunable antennas are respectively located at both ends of the first side shell 100.
  • the first side shell 100 includes a bottom plate 101 and an end plate 102 and a side plate 103 connected to the bottom plate 101; a tunable antenna is a stereo coupling antenna 110, and the stereo coupling antenna 110 includes The first metal trace 111 electrically connected to the RF feed source 600 inside the mobile terminal, and the first metal trace 111 and the bottom plate 101, the end plate 102 and the side plate 103 respectively have a first gap, a second gap and a third The gap is such that the first metal trace 111 simultaneously transfers energy to the bottom plate 101, the end plate 102, and the side plate 103 by coupling.
  • the combined antenna system further includes: a grounding device located in the first slot, and grounding the first side shell 100, and the grounding device divides the first slot 400 into a plurality of sub-slits; wherein, the one opposite to the stereo coupling antenna 110
  • the length of the sub-slit is 10 mm to 30 mm.
  • the specific shape of the first metal trace 111 in the present solution is not limited by FIG. 2 and FIG. 3, and the designer can control the number of branches of the first metal trace 111 and the electrical length of each branch.
  • the stereo coupling antenna 110 dominates the operation of the high frequency band, and is coupled to the bottom plate 101, the side plate 103, and the end plate 102 through the first metal traces 111 to respectively tune the respective frequency bands of the high frequency; in the above structure, the design
  • the person may integrate the specific frequency requirements of the product and the size requirements of the mobile terminal, and set specific parameters of the first gap, the second gap and the third gap.
  • the width s1 of the first gap is set to 4.5 mm to 7.5 mm
  • the width s2 of the second gap is 0.5 mm to 2.0 mm
  • the width s3 of the third gap is 0.5 mm to 2.0 mm
  • the width of the first slit is set to 1.3 mm to 2.0 mm, which can be tuned
  • the coupling antenna 110 is in various frequency bands between 1.5 GHz and 2.7 GHz.
  • a tunable antenna is an ultra-wideband antenna 120;
  • the ultra-wideband antenna 120 includes a main feed point 121 disposed on the first side shell 100 and is disposed in the first slot 400.
  • a ground feed point 122 wherein the main feed point 121 is located at one end of the housing away from the other tunable antenna, and the main feed point 121 is electrically connected to the RF feed source inside the mobile terminal, and the ground feed point 122 is located at the main feed point 121 is between another tunable antenna; wherein the spacing between the primary feed point 121 and the ground feed point 122 is adjustable.
  • the designer adjusts the high frequency resonance point of the ultra-wideband antenna 120 by controlling the position of the feed and adjusting the spacing between the main feed point 121 and the ground feed point 122; in this solution, Preferably, the spacing s4 between the main feed point 121 and the ground feed point 122 is controlled to be 1.5 mm to 8.0 mm, so that the ultra-wideband antenna 120 can completely cover the 1.5 GHz to 2.7 GHz frequency band, and even higher than the 2.7 GHz frequency band.
  • This structure can improve the radiation efficiency of the whole machine in the high frequency band.
  • the multi-interval tunable antenna 310 includes: a second metal trace 312 electrically connected to the second side shell 300 and the RF feed source inside the mobile terminal;
  • the three metal traces 311 are spaced apart from the second metal traces 312, and the third metal traces 311 are electrically connected to the second side shells 300.
  • the multi-interval tunable antenna 310 further includes: an adjustable device disposed inside the mobile terminal and electrically connected to the third metal trace 311, and the logic value of the adjustable device is adjustable.
  • the tunable device includes a capacitor, an inductor, an RF switch, or a matching circuit composed of a capacitor and an inductor.
  • the logic value may be a capacitance value and/or an inductance value or a logic signal of the RF switch, and the logic value may be changed. Tuned with a multi-interval tunable antenna 310.
  • the RF feed feeds energy into the second metal trace 312 and transfers energy to the second side shell 300 through the second metal trace 312 to achieve energy radiation and transfer, and then, the transfer
  • the energy sequentially passes through the second side shell 300 and the adjustable device to reach the third metal trace 311, and the third metal trace 311 forms a parasitic branch of the middle and high frequency bands of the multi-interval tunable antenna 310, and generates a high frequency band.
  • the resonance of the middle frequency band are not limited by FIG. 5, and the designer sets the second metal trace 312 and the third metal.
  • the number of branches of the trace 311, the length of each branch, and the feed position can control the multi-interval tunable antenna 310 to simultaneously dominate the respective frequency bands of the low frequency, intermediate frequency, and high frequency.
  • the coupling between the second metal trace 312 and the third metal trace 311 or between the branches of the metal traces generates resonance, and the designer can comprehensively adjust the working frequency of the product and the size requirements of the mobile terminal by adjusting the second metal.
  • the coupling pitch on the trace 312 and the third metal trace 311 can tune the multi-interval tunable antenna in various frequency bands of 0.68 GHz to 1 GHz and 1.5 GHz to 2.7 GHz, thereby reducing the low frequency loss of the whole machine, and When the user holds the mobile terminal, the loss of the left and right hands of the human body can be effectively reduced.
  • the first side shell 100 is located on the upper side of the middle case 200
  • the second side case 300 is located on the lower side of the middle case 200.
  • the tunable antenna on the first side shell 100 dominates the high frequency operation
  • the multi-interval tunable antenna 310 on the 300 mainly dominates the intermediate frequency operation and the low frequency operation, and the design can reduce the influence of the human hand and the head on the signal when the mobile terminal performs the call function.
  • the width s1 of the first gap is 5.7 mm
  • the width s2 of the second gap is 1.1 mm
  • the width s3 of the third gap is 1.1 mm
  • the width of the first gap is 1.8 mm
  • the spacing s4 between the main feed point and the ground feed point is 4.5 mm
  • the adjustable device is a tunable capacitor (32CK417R) and/or an SPDT RF switch (SKY13489).
  • the first gap has a width s1 of 6.0 mm
  • the second gap has a width s2 of 1.0 mm
  • the third gap has a width s3 of 1.0 mm
  • the first slit has a width of 1.9 mm
  • Set the distance s4 between the main feed point and the ground feed point to be 3 mm
  • set the adjustable device to a tunable capacitor (32CK417R) and/or an SPDT RF switch (SKY13489).
  • the first gap has a width s1 of 6.5 mm
  • the second gap has a width s2 of 1.2 mm
  • the third gap has a width s3 of 1.2 mm
  • the first slit has a width of 2.0 mm
  • set the adjustable device to a tunable capacitor (32CK417R) and/or an SPDT RF switch (SKY13489).
  • the combined antenna system provided by the solution can cover the frequency band of 0.68 GHz to 1 GHz and the frequency band of 1.7 GHz to 2.7 GHz, and ensure that it has the maximum radiation efficiency in each frequency band, thereby making the product Meet the performance requirements of various network standards for future mobile terminals.
  • An embodiment of the second aspect of the present invention provides a mobile terminal (not shown) including the combined antenna system described in any of the above embodiments.
  • the mobile terminal provided by the embodiment of the second aspect of the present invention has all the beneficial effects of the combined antenna system by providing the combined antenna system described in any of the above embodiments, and details are not described herein again.
  • the present invention provides a combined antenna system in which a tunable antenna and a multi-interval tunable antenna are respectively disposed on a first side shell and a second side shell, and a first side shell and a first side are used.
  • the two-sided shell acts as a radiation main body to solve the problem of coexistence of the antenna and the large area of the metal, thereby achieving the matching of the product with the full metal casing, and effectively reducing the loss of the human body signal; in addition, the tunable antenna dominates in this scheme.
  • the multi-interval tunable antenna simultaneously dominates the low frequency band, the middle frequency band and the high frequency band to achieve coverage of the high frequency band, the low frequency band and the high frequency band.
  • the structure of the structure can avoid the high frequency band in the multi-frequency antenna and The problem of interaction between the mid-band and the low-frequency band, and
  • the tunable antenna and each tunable antenna are tuned to maximize the radiation efficiency of the product in the low, mid and high frequency bands, enabling the product to meet the performance requirements of various network standards for future mobile terminals.
  • the terms “first”, “second”, and “third” are used for the purpose of description only, and are not to be construed as indicating or implying relative importance; the term “plurality” means two or two. Above, unless otherwise explicitly defined.
  • the terms “electrical connection”, “setting” and the like should be understood broadly. For example, “electrical connection” may be directly connected to satisfy current interaction or signal interaction, or may be indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

Abstract

本发明提供了一种组合天线系统及移动终端，其中，组合天线系统包括设置在移动终端后部的金属壳，金属壳包括第一边壳、中壳和第二边壳，以及设置在第一边壳与中壳之间的第一缝隙和设置在中壳与第二边壳之间的第二缝隙；其中，第一边壳上设置有多个覆盖高频段的可调谐天线；第二边壳上设置有同时覆盖高频段、中频段和低频段的多区间可调谐天线；本发明提供的组合天线系统，可覆盖0.68GHz～1GHz频段和1.7GHz～2.7GHz频段，并保证其在各个频段上均具有最大的辐射效率，从而使产品满足未来移动终端各种网络制式的性能需求。

Description

组合天线系统及移动终端 技术领域
本发明涉及无线通信技术领域，具体而言，涉及一种组合天线系统及具有该组合天线系统的移动终端。
背景技术
在手机、平板电脑等移动终端设备行业中，随着用户对产品的外观和手感的体验要求不断提高，使得具有的良好触感和优异的耐磨性能金属装饰类移动产品成为该行业中的消费主流，但是，由于金属后壳和金属边框等装饰所特有的屏蔽性能会严重降低天线的使用可靠性，故而，在顺应产品发展趋势的同时，对各大厂商在天线的设计上提出了更高的要求。
为解决该技术问题，现有技术中提出PIFA/缝隙天线组成的天线系统，该系统通过电路板上的开关控制接地点的通断以产生所需频段，但是，由于射频链路中大量开关结构的引入增加了天线系统的附加损耗，从而降低了天线系统的辐射效率；此外，该系统中对馈源/地衔位置以及整机的长度和宽度依赖性较大，且馈源两侧的高频分支和低频分支之间存在程度较深相互影响，由于该天线系统本身的谐振频率不易调试，则在生产过程中出现的任何尺寸偏差都会造成天线系统的谐振频率的偏移，这一方面进一步增加了天线系统的损耗，另一方面容易降低天线高频和超高频部分的稳定性，且使得高频和超高频的频带偏窄，从而降低产品整机使用可靠性。
发明内容
为了解决上述技术问题至少之一，本发明的一个目的在于提供一种可匹配全金属外壳，辐射效率高，且可覆盖高频段、中频段和低频段的组合式天线系统。
本发明的另一个目的在于提供一种具有上述组合天线系统的移动终端。
为实现上述目的，本发明第一方面的实施例提供了一种组合天线系统，用于移动终端，包括设置在所述移动终端后部的金属壳，所述金属壳包括第一边壳、中壳和第二边壳，以及设置在所述第一边壳与所述中壳之间的第一缝隙和设置在所述中壳与所述第二边壳之间的第二缝隙；其中，所述第一边壳上设置有多个覆盖高频段的可调谐天线；所述第二边壳上设置有同时覆盖高频段、中频段和低频段的多区间可调谐天线。
值得说明的是，本方案中所述低频段指代频率在0.68G～1GHz，所述中频段指代频率在1.5GHz～2.2GHz，所述高频段指代频率在2.2GHz～2.7GHz。
另外，本方案中第一缝隙和第二缝隙可利用非金属物质进行填充。
本发明第一方面的实施例提供的组合天线系统，中壳主地，将可调谐天线与多区间可调谐天线分别设置在第一边壳和第二边壳上，并利用第一边壳和第二边壳作为辐射主体，以此解决天线与金属大面积共存的问题，从而实现产品与全金属外壳的匹配，并可有效地降低人体对信号的损耗；另外，本方案中可调谐天线主导高频段的工作，多区间可调谐天线同时主导低频段、中频段和高频段的工作，以实现产品对中频段、低频段和高频段的覆盖，该结构的设置可避免多频天线中高频段与中频段和低频段之间相互影响的问题，并可通过分别对多区间可调谐天线和各个可调谐天线调谐，以使产品在低频段、中频段和高频段上均具有最大的辐射效率，从而使产品满足未来移动终端各种网络制式的性能需求。
另外，本发明提供的上述实施例中的组合天线系统还可以具有如下附加技术特征：
根据本发明的一个实施例，所述第一边壳上设置有两个所述可调谐天线，且两个所述可调谐天线分别位于所述第一边壳的两端。
根据本发明的一个实施例，所述第一边壳包括底板和与所述底板连接的端板和侧板；一所述可调谐天线为立体耦合天线，所述立体耦合天线包括与所述移动终端内部的射频馈源电连接的第一金属走线，且所述第一金属走线与所述底板、所述端板和所述侧板之间分别具有第一间隙、第二间隙和第三间隙，以使所述第一金属走线同时与所述底板、所述端板和所述侧板通过耦合方式传递能量。
上述结构中，可通过控制第一金属走线的电长度、形状及馈电位置以控制其产生高频谐振，另外，第一金属走线分别与底板、侧板和端板耦合馈电，通过调节第一间隙、第二间隙和第三间隙的大小可调谐该立体耦合天线的各个频段，以此降低其辐射损耗。
当然，本方案中可设置两个可调谐天线均为上述立体耦合天线。
根据本发明的一个实施例，所述组合天线系统还包括：接地装置，位于所述第一缝隙内，并将所述第一边壳接地，且所述接地装置将所述第一缝隙分隔为多个子缝隙；其中，与所述立体耦合天线相对的一所述子缝隙的长度为10mm～30mm。
具体地，第一边壳的中部与中壳(主地)之间利用钢片连接，并设置两个可调谐天线位于第一边壳的两端，以利用空间上的距离保证立体耦合天线与另一可调谐天线之间的隔离度；进一步地，在第一边壳上两个可调谐天线之间的部分开设其他元器件的空位，如摄像头孔和/或耳机孔和/或外接插口等，以此进一步削弱两个可调谐天线之间的电流和信号交互；此外，钢片将第一缝隙分割为多个子缝隙，则通过设置钢片在第一缝隙上的位置，控制与立体耦合天线相对的该子缝隙的长度为10mm～30mm，以使其调谐组合天线系统的中频部分。
根据本发明的一个实施例，一所述可调谐天线为超宽频天线；所述超宽频天线包括设置在所述第一边壳上的主馈点和设置在所述第一缝隙处的地馈点，其中，所述主馈点位于所述壳体上远离另一所述可调谐天线的一端，且所述主馈点与所述移动终端内部的射频馈源电连接，所述地馈点位于所述主馈点与另一所述可调谐天线之间。
当然，本方案中可设置两个可调谐天线均为上述超宽频天线。
根据本发明的一个实施例，所述主馈点与所述地馈点之间的间距可调。
该结构中，具体地，地馈点位于主馈点与钢片之间，可通过控制馈源位置，并调整主馈点与地馈点之间的间距，以此实现对超宽频天线高频谐振点的调整。
根据本发明的一个实施例，所述多区间可调谐天线包括：第二金属走线，分别与所述第二边壳和所述移动终端内部的射频馈源电连接；和第三金属走 线，与所述第二金属走线相间隔设置，且所述第三金属走线与所述第二边壳电连接。
该结构中，通过控制第二金属走线和第三金属走线分支的电长度、分支数量、分支形状和馈电位置以实现该多区间可调谐天线覆盖高频段、中频段和低频段，且该结构中第二金属走线与第三金属走线之间或各金属走线的分支间耦合产生谐振，故而，通过调节第二金属走线与第三金属走线之间或各金属走线的分支间的间距大小，可调谐多区间可调谐天线在高频、中频和低频中的各个频段，以此可减少整机的低频损耗，且在用户手持移动终端时，可有效降低人体左右手的损耗。
根据本发明的一个实施例，所述多区间可调谐天线还包括：可调器件，设置在所述移动终端内部，并与所述第三金属走线电连接，且所述可调器件的逻辑值可调。
具体地，可调器件包括电容、电感、射频开关或由电容和电感构成的匹配电路，相应地，逻辑值可为电容值和/或电感值或射频开关的逻辑信号，则可通过改变逻辑值以改变第三金属走线上的耦合强度或状态，以此实现多区间可调谐天线调谐；进一步地，可利用移动终端的软件与逻辑值匹配，则在产品的使用过程中，通过更新软件实现对逻辑值的控制。
根据本发明的一个实施例，所述第一边壳位于所述中壳的上侧，所述第二边壳位于所述中壳的下侧。
第一边壳上的可调谐天线主导高频工作，第二边壳上的多区间可调谐天线主要主导中频工作和低频工作，通过此设计可降低移动终端执行通话功能时的人体手部和头部对信号的影响。
本发明第二方面的实施例提供了一种移动终端，包括有上述任一项实施例中所述的组合天线系统。
本发明第二方面的实施例提供的移动终端，通过设置上述任一项实施例中所述的组合天线系统，从而具有所述组合天线系统所具有的一切有益效果，在此不再赘述。
本发明的附加方面和优点将在下面的描述部分中变得明显，或通过本发明的实践了解到。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是本发明一个实施例所述组合天线系统的结构示意图；
图2是图1中所示A部的放大结构示意图；
图3是本发明所述第一金属走线与第一边壳的位置关系示意图；
图4是图1中所示B部的放大结构示意图；
图5是图1中所示C部的放大结构示意图。
其中，图1至图5中的附图标记与部件名称之间的对应关系为：
100第一边壳，101底板，102端板，103侧板，110立体耦合天线，111第一金属走线，120超宽频天线，121主馈点，122地馈点，200中壳，300第二边壳，310多区间可调谐天线，312第二金属走线，311第三金属走线，400第一缝隙，500第二缝隙，600射频馈源。
具体实施方式
为了能够更清楚地理解本发明的上述目的、特征和优点，下面结合附图和具体实施方式对本发明进行进一步的详细描述。需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本发明，但是，本发明还可以采用其他不同于在此描述的其他方式来实施，因此，本发明的保护范围并不受下面公开的具体实施例的限制。
下面参照图1至图5描述根据本发明一些实施例所述组合天线系统。
如图1所示，本发明第一方面的实施例提供的组合天线系统，用于移动终端，包括设置在移动终端后部的金属壳，金属壳包括第一边壳100、中壳200和第二边壳300，以及设置在第一边壳100与中壳200之间的第一缝隙400和设置在中壳200与第二边壳300之间的第二缝隙500；其中，第一边壳100上设置有多个覆盖高频段的可调谐天线；第二边壳300上设置有同时覆盖高频段、中频段和低频段的多区间可调谐天线310。
值得说明的是，本方案中所述低频段指代频率在0.68～1GHz，所述中频段指代频率在1.5GHz～2.2GHz，所述高频段指代频率在2.2GHz～2.8GHz。
在本发明的一个实施例中，如图1至图4所示，第一边壳100上设置有两个可调谐天线，且两个可调谐天线分别位于第一边壳100的两端。
进一步地，如图2和图3所示，第一边壳100包括底板101和与底板101连接的端板102和侧板103；一可调谐天线为立体耦合天线110，立体耦合天线110包括与移动终端内部的射频馈源600电连接的第一金属走线111，且第一金属走线111与底板101、端板102和侧板103之间分别具有第一间隙、第二间隙和第三间隙，以使第一金属走线111同时与底板101、端板102和侧板103通过耦合方式传递能量。
另外，组合天线系统还包括：接地装置，位于第一缝隙内，并将第一边壳100接地，且接地装置将第一缝隙400分隔为多个子缝隙；其中，与立体耦合天线110相对的一子缝隙的长度为10mm～30mm。
具体而言，本方案中所述第一金属走线111的具体形状并不受图2和图3的限制，设计人员通过设置第一金属走线111的分支数量、各分支的电长度可控制该立体耦合天线110主导高频段的工作，并通过第一金属走线111与分别与底板101、侧板103和端板102耦合馈电以调谐高频的各个频段；则在上述结构中，设计人员可综合对产品的工作频段需求和移动终端的尺寸要求，设置适合的第一间隙、第二间隙和第三间隙的具体参数，优选地，在本方案中，设置第一间隙的宽度s1为4.5mm～7.5mm，第二间隙的宽度s2为0.5mm～2.0mm，第三间隙的宽度s3为0.5mm～2.0mm；且设置第一缝隙宽度为1.3mm～2.0mm，可实现调谐该立体耦合天线110在1.5GHz～2.7GHz之间的各个频段。
在本发明的一个实施例中，如图4所示，一可调谐天线为超宽频天线120；超宽频天线120包括设置在第一边壳100上的主馈点121和设置在第一缝隙400处的地馈点122，其中，主馈点121位于壳体上远离另一可调谐天线的一端，且主馈点121与移动终端内部的射频馈源电连接，地馈点122位于主馈点121与另一可调谐天线之间；其中，主馈点121与地馈点122之间的间距可调。
上述结构中，设计人员通过控制馈源位置，并调整主馈点121与地馈点122之间的间距，以此实现对超宽频天线120高频谐振点的调整；在本方案中， 优选地，主馈点121与地馈点122之间的间距s4控制在1.5mm～8.0mm，以此可实现该超宽频天线120完全覆盖1.5GHz～2.7GHz频段，甚至高于2.7GHz频段，该结构可提高整机在高频段辐射效率。
在本发明的一个实施例中，如图5所示，多区间可调谐天线310包括：第二金属走线312，分别与第二边壳300和移动终端内部的射频馈源电连接；和第三金属走线311，与第二金属走线312相间隔设置，且第三金属走线311与第二边壳300电连接。
进一步地，多区间可调谐天线310还包括：可调器件，设置在移动终端内部，并与第三金属走线311电连接，且可调器件的逻辑值可调。
具体地，可调器件包括电容、电感、射频开关或由电容和电感构成的匹配电路，相应地，逻辑值可为电容值和/或电感值或射频开关的逻辑信号，则可通过改变逻辑值以对多区间可调谐天线310调谐。
具体而言，本方案中射频馈源将能量馈入第二金属走线312，并通过第二金属走线312将能量传递给第二边壳300以实现能量的辐射和传递，随后，传递的能量依次经第二边壳300、可调器件后到达第三金属走线311，该第三金属走线311形成该多区间可调谐天线310的中频段和高频段的寄生分支，并产生高频段和中频段的谐振；当然，本方案中所述第二金属走线312和第三金属走线311的具体形状不受图5的限制，设计人员通过设置第二金属走线312和第三金属走线311的分支数量、各分支的长度和馈电位置可控制该多区间可调谐天线310同时主导低频、中频和高频的各个频段。
此外，第二金属走线312和第三金属走线311之间或各金属走线的分支间耦合产生谐振，设计人员可综合对产品的工作频段需求和移动终端的尺寸要求，通过调节第二金属走线312和第三金属走线311上的耦合间距可调谐该多区间可调谐天线在0.68GHz～1GHz和1.5GHz～2.7GHz的各个频段，以此，可减少整机的低频损耗，且在用户手持移动终端时，可有效降低人体左右手的损耗。
在本发明的一个实施例中，如图1所示，第一边壳100位于中壳200的上侧，第二边壳300位于中壳200的下侧。
在该实施例中，第一边壳100上的可调谐天线主导高频工作，第二边壳 300上的多区间可调谐天线310主要主导中频工作和低频工作，通过此设计可降低移动终端执行通话功能时的人体手部和头部对信号的影响。
在本发明的一个具体实施例中，第一间隙的宽度s1为5.7mm，第二间隙的宽度s2为1.1mm，第三间隙的宽度s3为1.1mm，第一缝隙宽度为1.8mm；且设置主馈点与地馈点之间的间距s4为4.5mm；且设置可调器件为可调电容(32CK417R)和/或SPDT射频开关(SKY13489)。
在本发明的另一个具体实施例中，第一间隙的宽度s1为6.0mm，第二间隙的宽度s2为1.0mm，第三间隙的宽度s3为1.0mm，第一缝隙宽度为1.9mm；且设置主馈点与地馈点之间的间距s4为3mm；且设置可调器件为可调电容(32CK417R)和/或SPDT射频开关(SKY13489)。
在本发明的再一个具体实施例中，第一间隙的宽度s1为6.5mm，第二间隙的宽度s2为1.2mm，第三间隙的宽度s3为1.2mm，第一缝隙宽度为2.0mm；且设置主馈点与地馈点之间的间距s4为6mm；且设置可调器件为可调电容(32CK417R)和/或SPDT射频开关(SKY13489)。
结合以上具体实施例给出的特征，本方案提供的组合天线系统可实现覆盖0.68GHz～1GHz频段和1.7GHz～2.7GHz频段，并保证其在各个频段上均具有最大的辐射效率，从而使产品满足未来移动终端各种网络制式的性能需求。
本发明第二方面的实施例提供了一种移动终端(图中未示出)，包括有上述任一项实施例中所述的组合天线系统。
本发明第二方面的实施例提供的移动终端，通过设置上述任一项实施例中所述的组合天线系统，从而具有所述组合天线系统所具有的一切有益效果，在此不再赘述。
综上所述，本发明提供的组合天线系统，中壳主地，将可调谐天线与多区间可调谐天线分别设置在第一边壳和第二边壳上，并利用第一边壳和第二边壳作为辐射主体，以此解决天线与金属大面积共存的问题，从而实现产品与全金属外壳的匹配，并可有效地降低人体对信号的损耗；另外，本方案中可调谐天线主导高频段的工作，多区间可调谐天线同时主导低频段、中频段和高频段的工作，以实现产品对高频段、低频段和高频段的覆盖，该结构的设置可避免多频天线中高频段与中频段和低频段之间相互影响的问题，并可通过分别对多区 间可调谐天线和各个可调谐天线调谐，以使产品在低频段、中频段和高频段上均具有最大的辐射效率，从而使产品满足未来移动终端各种网络制式的性能需求。
在本发明中，术语“第一”、“第二”、“第三”仅用于描述的目的，而不能理解为指示或暗示相对重要性；术语“多个”则指两个或两个以上，除非另有明确的限定。术语“电连接”、“设置”等术语均应做广义理解，例如，“电连接”可以是为满足电流交互或信号交互的直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
本发明的描述中，需要理解的是，术语“上”、“下”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或单元必须具有特定的方向、以特定的方位构造和操作，因此，不能理解为对本发明的限制。
在本说明书的描述中，术语“一个实施例”、“具体实施例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或实例。而且，描述的具体特征、结构、材料或特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种组合天线系统，用于移动终端，其特征在于，包括设置在所述移动终端后部的金属壳，所述金属壳包括第一边壳、中壳和第二边壳，以及设置在所述第一边壳与所述中壳之间的第一缝隙和设置在所述中壳与所述第二边壳之间的第二缝隙；
    其中，所述第一边壳上设置有多个覆盖高频段的可调谐天线；
    所述第二边壳上设置有同时覆盖高频段、中频段和低频段的多区间可调谐天线。
  2. 根据权利要求1所述的组合天线系统，其特征在于，
    所述第一边壳上设置有两个所述可调谐天线，且两个所述可调谐天线分别位于所述第一边壳的两端。
  3. 根据权利要求2所述的组合天线系统，其特征在于，
    所述第一边壳包括底板和与所述底板连接的端板和侧板；
    一所述可调谐天线为立体耦合天线，所述立体耦合天线包括与所述移动终端内部的射频馈源电连接的第一金属走线，且所述第一金属走线与所述底板、所述端板和所述侧板之间分别具有第一间隙、第二间隙和第三间隙，以使所述第一金属走线同时与所述底板、所述端板和所述侧板通过耦合方式传递能量。
  4. 根据权利要求3所述的组合天线系统，其特征在于，还包括：
    接地装置，位于所述第一缝隙内，并将所述第一边壳接地，且所述接地装置将所述第一缝隙分隔为多个子缝隙；
    其中，与所述立体耦合天线相对的一所述子缝隙的长度为10mm～30mm。
  5. 根据权利要求2至4中任一项所述的组合天线系统，其特征在于，
    一所述可调谐天线为超宽频天线；
    所述超宽频天线包括设置在所述第一边壳上的主馈点和设置在所述第一缝隙处的地馈点，其中，所述主馈点位于所述壳体上远离另一所述可调谐天线的一端，且所述主馈点与所述移动终端内部的射频馈源电连接，所述地馈点位于所述主馈点与另一所述可调谐天线之间。
  6. 根据权利要求5所述的组合天线系统，其特征在于，
    所述主馈点与所述地馈点之间的间距可调。
  7. 根据权利要求1至4中任一项所述的组合天线系统，其特征在于，所述多区间可调谐天线包括：
    第二金属走线，分别与所述第二边壳和所述移动终端内部的射频馈源电连接；和
    第三金属走线，与所述第二金属走线相间隔设置，且所述第三金属走线与所述第二边壳电连接。
  8. 根据权利要求7所述的组合天线系统，其特征在于，所述多区间可调谐天线还包括：
    可调器件，设置在所述移动终端内部，并与所述第三金属走线电连接，且所述可调器件的逻辑值可调。
  9. 根据权利要求1至4中任一项所述的组合天线系统，其特征在于，
    所述第一边壳位于所述中壳的上侧，所述第二边壳位于所述中壳的下侧。
  10. 一种移动终端，其特征在于，包括有如权利要求1至9中任一项所述的组合天线系统。
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