WO2014176868A1 - 一种组合天线及手持天线装置 - Google Patents

一种组合天线及手持天线装置 Download PDF

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Publication number
WO2014176868A1
WO2014176868A1 PCT/CN2013/084731 CN2013084731W WO2014176868A1 WO 2014176868 A1 WO2014176868 A1 WO 2014176868A1 CN 2013084731 W CN2013084731 W CN 2013084731W WO 2014176868 A1 WO2014176868 A1 WO 2014176868A1
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WIPO (PCT)
Prior art keywords
layer
microstrip antenna
antenna
layer microstrip
feed
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Application number
PCT/CN2013/084731
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English (en)
French (fr)
Inventor
王春华
黄毅
郭奇松
Original Assignee
深圳市华信天线技术有限公司
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Application filed by 深圳市华信天线技术有限公司 filed Critical 深圳市华信天线技术有限公司
Publication of WO2014176868A1 publication Critical patent/WO2014176868A1/zh

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04Resonant antennas
    • H01Q9/0407Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0414Substantially flat resonant element parallel to ground plane, e.g. patch antenna in a stacked or folded configuration
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/22Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/40Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements

Definitions

  • the present invention relates to the field of antennas, and in particular to a combined antenna and a handheld antenna device.
  • the China Beidou satellite navigation system is the fourth largest satellite navigation system in the world after the US GPS, GLONASS, and Galileo in Europe.
  • the Beidou satellite navigation system will cover the Asia-Pacific region in 2012, and will have a global coverage of more than 30 satellite networks in 2020.
  • Beidou satellite navigation system can provide high-precision, high-reliability positioning, navigation and timing services, with a combination of navigation and communication features.
  • this system has been applied in many fields such as surveying and mapping, fishery, transportation, telecommunications, water conservancy, forest fire prevention, disaster mitigation and disaster relief, and national security, resulting in significant economic and social benefits.
  • the Beidou positioning system is the Beidou first generation system and the Beidou second generation system.
  • the Beidou positioning system In order to improve the transmission and reception signals of the dual-mode handheld terminal equipment, it has a combination of small size, high gain, high sensitivity, high isolation and high reliability.
  • the antenna device is a much-needed component in the development of dual-mode handheld terminal devices. Summary of the invention
  • the technical problem solved by the present invention is to provide a combined antenna and a handheld antenna device to meet the requirements of small size, high gain, high sensitivity, high isolation, and high reliability.
  • an embodiment of the present invention provides a combined antenna, including a plurality of microstrip antennas on a circuit board, including a first layer of microstrip antennas having a first radiating piece, in order from top to bottom, having a second a second layer microstrip antenna of the radiation sheet, a third layer microstrip antenna having a third radiation sheet, a feeding network and a shielding box disposed under the circuit board; wherein the first layer microstrip antenna adopts a center feeding pin, The feed network is connected through the second layer microstrip antenna and the third layer microstrip antenna, and the second layer microstrip antenna The doubly-fed pin is connected to the feed network through a third layer microstrip antenna, and the third layer microstrip antenna double feed pin is connected to the feed network.
  • the first layer microstrip antenna adopts a center feed pin
  • the metallization center via hole of the second layer microstrip antenna and the third layer microstrip antenna is connected to the feed network
  • the two-layer microstrip antenna double feed pin is connected to the feed network through the metallized via of the third layer microstrip antenna, wherein the second layer microstrip antenna and the third layer microstrip antenna are metallized center vias and metal
  • the via is provided with a dielectric sleeve.
  • the first radiating piece of the first layer microstrip antenna has a chamfered angle on the lower left side.
  • the first layer of the microstrip antenna has a transmitting plate at the bottom, the reflecting plate is provided with a shielding layer, and the first layer of the microstrip antenna is provided There is also a depth control hole below.
  • three protrusions are respectively disposed on four sides of the second radiation piece of the second layer microstrip antenna.
  • the bottom of the second layer microstrip antenna is provided with a reflector, the reflector is provided with a reflector avoidance layer, and the second layer microstrip antenna reflector Below the control is a deep hole.
  • the four sides of the third radiation piece of the third layer microstrip antenna are respectively provided with three protrusions.
  • the bottom of the third layer microstrip antenna is provided with a reflection plate, and the reflection plate is provided with a reflection plate evacuation layer.
  • the embodiment of the invention further provides a handheld antenna device, comprising the above combined antenna, the first layer microstrip antenna outputs a signal to the radio frequency receiving module through the feeding network; the second layer microstrip antenna outputs a signal to the radio frequency through the feeding network.
  • the transmitting module; the third layer microstrip antenna outputs a signal to the radio frequency receiving module through the feeding network.
  • the phase difference between the two feeding pins of the second radiating piece of the second layer microstrip antenna is 90 degrees, and the left circular polarization is realized by a 90 degree phase shift feeding network.
  • the phase difference between the two feeding pins of the third radiating piece of the third layer microstrip antenna is 90 degrees, and the right circular polarization is realized by the 90 degree phase shift feeding network, and the output is Signal
  • the RF receiving module adopts the above technical solution, and adopts a three-layer microstrip antenna combination, and the three layers of microstrip antennas are all directly fed, and are designed in the center of the second layer microstrip antenna and the third layer microstrip antenna. Metalized vias, the first layer of center feed pins passing through the second layer microstrip antenna and the third layer microstrip antenna center through hole to reduce the loss, so that the combined antenna has good vertex gain And low elevation gain.
  • Figure 1 is a structural view of a first embodiment of the present invention
  • FIG. 2 is a schematic view showing the front structure of the first layer microstrip antenna in the first embodiment of the present invention
  • FIG. 3 is a schematic view showing the back structure of the first layer microstrip antenna according to the first embodiment of the present invention
  • FIG. 5 is a schematic view showing the back structure of a second layer microstrip antenna according to a first embodiment of the present invention
  • FIG. 6 is a schematic view showing the front structure of a third layer microstrip antenna according to a first embodiment of the present invention.
  • FIG. 7 is a schematic view showing the back structure of a third layer microstrip antenna according to a first embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a combined antenna RF feed network in a handheld antenna device according to a second embodiment of the present invention.
  • “upper” and “lower” mean the relative positional relationship between the two. If the absolute position changes, the relative position changes accordingly; “connection” means that the connection may be direct or indirect. The connection does not constitute an absolute limitation of the embodiments of the invention.
  • the combined antenna includes a plurality of microstrip antennas on the circuit board 01, and the plurality of microstrip antennas include three microstrip antennas, and the frequency thereof is from high to low in order from top to bottom, and specifically includes having a first radiating piece.
  • a first layer microstrip antenna 13 of 15 a first layer microstrip antenna 13 of 15 , a second layer microstrip antenna 12 having a second radiating sheet 18 , a third layer microstrip antenna 11 having a third radiating sheet 16 , and a feed network disposed under the circuit board 01 41 and a shielding box 42, the shielding box 42 is soldered on the circuit board 01; the plurality of microstrip antennas are designed in a square shape.
  • the first layer microstrip antenna 13 adopts a center feed pin 23, passes through the metallization center via 31 of the second layer microstrip antenna 12, and the metallization center via 32 of the third layer microstrip antenna 11 and the circuit board
  • the feed network 41 on 01 is connected, and the second layer microstrip antenna 12 double feed pins 22 (eight, B, respectively) pass through the metallized via 33 of the third layer microstrip antenna 11 and the feed on the circuit board 01
  • the network 41 is connected.
  • the third layer microstrip antenna 11 double feed pins 21 are connected to the phase shift feed network 41 through the circuit board 01, and the metallization center via holes 31 and the third layer of the second layer microstrip antenna 12
  • the metallized central via 32 of the microstrip antenna 11 is provided with a dielectric sleeve 71, and the third microstrip antenna 11 is formed with a via 33 for the dielectric sleeve 71; the plurality of RF connectors 43 are soldered to the circuit board through the shield 42 01.
  • FIG. 2 it is a schematic top view of the first layer microstrip antenna in the first embodiment of the present invention.
  • the first radiating strip 15 of the first layer microstrip antenna 13 has an angle 53 on it, as an example.
  • the chamfer 53 is located at the lower left of the first radiating sheet 15, and the chamfer 53 can be used to convert the direction of the originally linearly polarized radiation into a circularly polarized radiation direction.
  • FIG. 3 it is a schematic diagram of the back structure of the first layer microstrip antenna in the first embodiment of the present invention.
  • the bottom of the first layer microstrip antenna 13 is provided with a reflection plate 14, and the reflection plate 14 is provided with a reflection plate avoidance.
  • the number of the transparent layer 34 is one, and the bottom of the reflector 14 of the microstrip antenna 13 is provided with a depth control hole 61.
  • the number of the depth control holes 61 may be four. 61 is to avoid the position of the double feed pin 22 of the second layer microstrip antenna 12, so that the first layer microstrip antenna 13 can be placed at 0 degrees, 90 degrees, 180 degrees and 270 degrees in actual operation.
  • FIG. 4 it is a schematic plan view of a second layer microstrip antenna according to a first embodiment of the present invention.
  • the second radiating strip 18 of the second layer microstrip antenna 12 is respectively provided with three protrusions 52 on four sides, according to the handheld device. Appearance, matching the length of the protrusion to match the frequency of the hand-held antenna, ensuring the gain and axial ratio performance of the antenna with low elevation angle;
  • the second radiation piece is provided with two feeding pins A, B, and the second radiation piece is also A metallization center via 31 is provided.
  • FIG. 5 it is a schematic diagram of the back structure of the second layer microstrip antenna according to the first embodiment of the present invention:
  • the bottom of the two-layer microstrip antenna 12 has a reflection plate 19, and the reflection plate 19 is provided with a reflection plate avoidance layer 35.
  • the number of the reflection plate avoidance layers is two, and is disposed at the center of the second layer microstrip antenna.
  • the metallized central via 31 can better connect the grounds of the three antennas together, reduce the resonance between the antennas, and improve the gain and axial ratio performance of the low elevation angle of each antenna.
  • a control hole 62 is disposed under the reflection plate 19 of the second layer microstrip antenna 12, and the number of the depth control holes is two, and the control hole 62 is for avoiding the doubly feed of the third layer microstrip antenna 11.
  • the position of the needle 21 allows the upper, middle and lower microstrip antennas to be closely connected.
  • FIG. 6 it is a schematic diagram of a top view of a third layer microstrip antenna according to a first embodiment of the present invention.
  • the third radiating strip 16 of the third layer microstrip antenna 11 is respectively provided with three protrusions 51 on four sides, according to the outside of the handheld device.
  • the type, the length of the convex shape is adjusted to match the frequency of the Beidou handheld antenna, and the gain and the axial ratio performance of the antenna with low elevation angle are ensured;
  • the third radiation piece 16 of the third layer microstrip antenna 11 is provided with two feeding pins, D, And two metallization vias 33 and metallization center vias 32.
  • FIG. 7 it is a schematic diagram of the back structure of the third layer microstrip antenna according to the first embodiment of the present invention: a reflecting plate 17 is disposed, and two metallized vias 33 and metallized center vias are disposed on the reflecting plate 17. 32; a reflector avoidance layer 36 is disposed on the reflector 17, and the number of the shield avoidance layer is 2
  • the uppermost microstrip antenna has the highest frequency
  • the lowermost microstrip antenna has the lowest frequency, as shown in Fig. 1: the smallest volume antenna is at the uppermost layer, and the lowermost antenna has the largest volume.
  • the second radiating sheet 18 on the front side of the second microstrip antenna 12 is also the reference ground of the first layer microstrip antenna 13
  • the third radiating sheet 16 on the front side of the third layer microstrip antenna 11 is also the first The reference ground of the two-layer microstrip antenna 12.
  • FIG. 8 is a schematic diagram of a combined antenna RF feed network in the handheld antenna device according to the second embodiment of the present invention.
  • the phase difference between the two feed pins A and B of the second layer microstrip antenna 12 is 90 degrees, and the left-hand circular polarization is finally realized by the 90-degree phase shift feed network 41, and the signal is output to the RF transmitting module through the RF connector 43.
  • the phase between the feeding pins C and D of the third layer microstrip antenna 11 is 90 degrees, and the right circular polarization is finally realized by the 90 degree phase shift feeding network 41, and the signal is output to the radio frequency receiving through the RF connector 43.
  • Module The above description shows and describes a preferred embodiment of the present invention, but as described above, it should be understood that the present invention is not limited to the forms disclosed herein, and should not be construed as Other combinations, modifications, and environments are possible and can be modified by the teachings or related art or knowledge within the scope of the inventive concept described herein. All changes and modifications made by those skilled in the art are intended to be within the scope of the appended claims.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Waveguide Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

本发明涉及天线领域,提供了一种组合天线,包括位于线路板上的多个微带天线,从上至下依次包括具有第一辐射片的第一层微带天线,具有第二辐射片的第二层微带天线,具有第三辐射片的第三层微带天线,所述线路板下方设置有馈电网络和屏蔽盒;其中,第一层微带天线采用中心馈针,通过第二层微带天线和第三层微带天线连接馈电网络,第二层微带天线双馈针通过第三层微带天线连接馈电网络,第三层微带天线双馈针连接所述馈电网络。本发明还提供了一种手持天线装置。采用上述技术方案,可以减小损耗,使本组合天线具有良好的顶点增益和低仰角增益。

Description

一种組合天线及手持天线装置
技术领域
本发明涉及天线领域, 特別地涉及一种组合天线及手持天线装置。
背景技术
随着卫星导航和测量技术的快速发展, 卫星定位系统也得到了广泛的运 用。 目前, 全球已有多个国家建立了的卫星定位系统, 中国北斗卫星导航系 统是继美国 GPS、 俄罗斯格洛納斯、 欧洲伽利略之后, 全球第四大卫星导航 系统。 北斗卫星导航系统 2012年将覆盖亚太区域, 2020年将形成由 30多颗 卫星组网具有覆盖全球的能力。
北斗卫星导航系统能够提供高精度、 高可靠的定位、 导航和授时服务, 具有导航和通信相结合的服务特色。 通过 20年的发展, 这一系统在测绘、 渔 业、 交通运输、 电信、 水利、 森林防火、 减灾救灾和国家安全等诸多领域得 到应用, 产生了显著的经济效益和社会效益。
目前北斗定位系统分別为北斗一代系统和北斗二代系统, 为了提升双模 手持终端设备的收发信号, 具有体积小、 高增益、 高灵敏度、 高隔离度、 高 可靠性的一种组合天线及手持天线装置是双模手持终端设备发展中的亟需部 件。 发明内容
本发明解决的技术问题在于提供了一种组合天线和一种手持天线装置, 以满足对体积小、 高增益、 高灵敏度、 高隔离度、 以及可靠性高的要求。
为解决上述问题, 本发明实施例提供了一种组合天线, 包括位于线路板 上的多个微带天线, 从上至下依次包括具有第一辐射片的第一层微带天线, 具有第二辐射片的第二层微带天线, 具有第三辐射片的第三层微带天线, 所 述线路板下方设置有馈电网络和屏蔽盒; 其中, 第一层微带天线采用中心馈 针, 通过第二层微带天线和第三层微带天线连接馈电网络, 第二层微带天线 双馈针通过第三层微带天线连接馈电网络, 第三层微带天线双馈针连接所述 馈电网络。
优选地, 作为一个示例, 上述的组合天线中, 第一层微带天线采用中心 馈针, 通过第二层微带天线和第三层微带天线的金属化中心过孔连接馈电网 络, 第二层微带天线双馈针通过第三层微带天线的金属化过孔连接馈电网络, 其中, 所述第二层微带天线和第三层微带天线的金属化中心过孔和金属化过 孔设置有介质套。
优选地, 作为一个示例, 上述的组合天线中, 所述第一层微带天线的第 一辐射片左下方具有切角。
优选地, 作为一个示例, 上述的组合天线中, 所述第一层微带天线底部 有发射板, 在反射板上设置有反射板避空层, 以及所述第一层微带天线反射 板的下面还设有控深孔。
优选地, 作为一个示例, 上述的组合天线中, 所述第二层微带天线的第 二辐射片上四边分別设置有三个凸起。
优选地, 作为一个示例, 上述的组合天线中, 所述第二层微带天线的底 部设有反射板, 在反射板上设置有反射板避空层, 以及在第二层微带天线反 射板的下面设有控深孔。
优选地, 作为一个示例, 上述的组合天线中, 第三层微带天线的第三辐 射片的四边分別设置有三个凸起。
优选地, 作为一个示例, 上述的组合天线中, 所述第三层微带天线的底 部设有反射板, 在反射板上设置有反射板避空层。
本发明实施例还提供了一种手持天线装置, 包括上述的组合天线, 第一 层微带天线通过馈电网络输出信号给射频接收模块; 第二层微带天线通过馈 电网络输出信号给射频发射模块; 第三层微带天线通过馈电网络输出信号给 射频接收模块。
作为一个示例, 上述的手持天线装置中, 所述第二层微带天线的第二辐 射片的两馈电针之间相位差为 90度, 通过 90度移相馈电网络实现左旋圆极 化, 输出信号给射频发射模块; 所述第三层微带天线的第三辐射片的两馈电 针之间相位差为 90度, 通过 90度移相馈电网络实现右旋圆极化, 输出信号 给射频接收模块 通过上述技术方案, 采用了三层微带天线组合, 这三层微带天线都是采 用直接馈电方式, 在第二层微带天线和第三层微带天线中心都设计有金属化 过孔, 第一层中心馈电针穿过上述第二层微带天线和上述第三层微带天线中 心通孔到达线路板时可以减小损耗, 使本组合天线具有良好的顶点增益和低 仰角增益。 附图说明
此处所说明的附图用来提供对本发明的进一步理解,构成本发明的一部 分, 本发明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的 不当限定。 在附图中:
图 1是本发明第一实施例结构图;
图 2是本发明第一实施例中第一层微带天线正面结构示意图; 图 3是本发明第一实施例中第一层微带天线背面结构示意图; 图 4是本发明第一实施例第二层微带天线正面结构示意图;
图 5是本发明第一实施例第二层微带天线背面结构示意图;
图 6是本发明第一实施例第三层微带天线正面结构示意图;
图 7是本发明第一实施例第三层微带天线背面结构示意图;
图 8是本发明第二实施例手持天线装置中组合天线射频馈电网络原理
具体实施方式
为了使本发明所要解决的技术问题、 技术方案及有益效果更加清楚、 明 白, 以下结合附图和实施例, 对本发明进行进一步详细说明。 应当理解, 此 处所描述的具体实施例仅仅用以解释本发明, 并不用于限定本发明。
在本发明的实施中, 其中 "上" "下" 是表示两者的相对位置关系, 如 果绝对位置发生变化, 其相对位置也会相应变化; "连接 " 表示可能是直接 连接, 也可能是间接连接, 并不构成对本发明实施例的绝对限定。
如图 1、 图 2、 图 4、 图 6所示, 是本发明第一实施例结构图, 提供了一 种组合天线, 包括位于线路板 01上的多个微带天线, 所述多个微带天线包括 三个微带天线, 从上到下其频率依次从高到低, 具体包括具有第一辐射片 15 的第一层微带天线 13, 具有第二辐射片 18的第二层微带天线 12, 具有第三 辐射片 16的第三层微带天线 11, 在线路板 01下方设置有馈电网络 41和屏 蔽盒 42, 所述屏蔽盒 42焊接在线路板 01上; 所述多个微带天线设计为正方 形。
优选地, 第一层微带天线 13采用中心馈针 23, 穿过第二层微带天线 12 的金属化中心过孔 31和第三层微带天线 11的金属化中心过孔 32与线路板 01上的馈电网络 41连接, 第二层微带天线 12双馈针 22 (分別为八、 B) 穿 过第三层微带天线 11的金属化过孔 33与线路板 01上的馈电网络 41连接。 第三层微带天线 11双馈针 21 (分別为 、 D) 穿过线路板 01与移相馈电网 络 41连接, 在第二层微带天线 12的金属化中心过孔 31和第三层微带天线 11的的金属化中心过孔 32中设置有介质套 71, 第三层微带天线 11金属化过 孔 33设置介质套 71 ; 多个射频接头 43穿过屏蔽盒 42焊接在线路板 01上。
优选地, 如图 2所示, 是本发明第一实施例中第一层微带天线俯视结构 示意图, 第一层微带天线 13的第一辐射片 15上具有一切角 53, 作为一个示 例, 该切角 53位于第一辐射片 15的左下方, 采用该切角 53可以将原本是线 极化辐射的方向转化成圆极化辐射方向。
如图 3所示, 是本发明第一实施例中第一层微带天线背面结构示意图: 第一层微带天线 13底部设有反射板 14, 在所述反射板 14上设置有反射板避 空层 34, 所述反射板避空层的数量为 1个, 微带天线 13反射板 14的下面设 有控深孔 61, 所述控深孔 61的数量可以为四个, 该控深孔 61是为了避空第 二层微带天线 12的双馈针 22位置,使第一层微带天线 13在实际操作中可以 成 0度, 90度, 180度和 270度摆放。
如图 4所示, 是本发明第一实施例第二层微带天线俯视结构示意图: 第 二层微带天线 12的第二辐射片 18上四边分別设置有三个凸起 52, 根据手持 设备的外型, 通过调整凸起的长度来匹配手持天线频率, 保证天线的低仰角 的增益和轴比性能; 该第二辐射片上设置有两个馈电针 A、 B, 并且该第二辐 射片上还设置金属化中心过孔 31。
如图 5所示, 是本发明第一实施例第二层微带天线背面结构示意图: 第 二层微带天线 12底部有反射板 19, 在反射板 19上设置有反射板避空层 35, 所述反射板避空层的数量为 2个, 在第二层微带天线的中心位置设置有金属 化中心过孔 31, 可以更好的使三个天线的地相连在一起, 减小各天线之间的 谐振, 提高各天线的低仰角的增益和轴比性能。
在第二层微带天线 12反射板 19的下面设有控深孔 62, 所述控深孔的数 量为 2个, 该控深孔 62是为了避空第三层微带天线 11的双馈针 21位置, 使 上中下层微带天线可以紧密相连。
如图 6所示, 是本发明第一实施例第三层微带天线俯视结构示意图: 第 三层微带天线 11的第三辐射片 16四边分別设置有三个凸起 51, 根据手持设 备的外型, 通过调整凸形的长度来匹配北斗手持天线频率, 保证天线的低仰 角的增益和轴比性能; 第三层微带天线 11的第三辐射片 16设置有两个馈电 针 、 D, 以及两个金属化过孔 33和金属化中心过孔 32。
如图 7所示, 是本发明第一实施例第三层微带天线背面结构示意图: 设 有反射板 17, 在反射板 17上, 设置有两个金属化过孔 33和金属化中心过孔 32 ; 在反射板 17上设置有反射板避空层 36, 所述反射板避空层的数量为 2
上述微带天线中, 最上层微带天线频率最高, 最下层微带天线频率最低, 如图 1所示:最小体积的天线在最上层,最下层的天线的体积最大。如图 4-7, 第二个微带天线 12正面的第二辐射片 18同时也是第一层微带天线 13的参考 地, 第三层微带天线 11正面的第三辐射片 16同时也是第二层微带天线 12的 参考地。
较佳地, 如图 4, 6所示: 第二层微带天线 12的第二辐射片 18和第三层 微带天线 11的第三辐射片 16设置有各两个馈电针,分別为 A、B、C、D, A、 B、 C、 D四个馈电针成 90度摆放, 如图 8, 是本发明第二实施例手持天线装 置中组合天线射频馈电网络原理图, 这样第二层微带天线 12的两馈电针 A、 B之间相位差为 90度, 通过 90度移相馈电网络 41最终实现左旋圆极化, 通 过射频接头 43输出信号给射频发射模块, 同理第三层微带天线 11的馈电针 C、 D之间相位为 90度, 通过 90度移相馈电网络 41最终实现右旋圆极化, 通过射频接头 43输出信号给射频接收模块。 上述说明示出并描述了本发明的一个优选实施例, 但如前所述, 应当理 解本发明并非局限于本文所披露的形式, 不应看作是对其他实施例的排除, 而可用于各种其他组合、 修改和环境, 并能够在本文所述发明构想范围内, 通过上述教导或相关领域的技术或知识进行改动。 而本领域人员所进行的改 动和变化不脱离本发明的精神和范围, 则都应在本发明所附权利要求的保护 范围内。

Claims

权 利 要 求 书
1、 一种组合天线, 包括位于线路板上的多个微带天线, 从上至下依次包 括具有第一辐射片的第一层微带天线, 具有第二辐射片的第二层微带天线, 具有第三辐射片的第三层微带天线, 所述线路板下方设置有馈电网络和屏蔽 盒; 其中, 第一层微带天线采用中心馈针, 通过第二层微带天线和第三层微 带天线连接馈电网络, 第二层微带天线双馈针通过第三层微带天线连接馈电 网络, 第三层微带天线双馈针连接所述馈电网络。
2、 根据权利要求 1所述的组合天线, 其中, 第一层微带天线采用中心馈 针,通过第二层微带天线和第三层微带天线的金属化中心过孔连接馈电网络, 第二层微带天线双馈针通过第三层微带天线的金属化过孔连接馈电网络, 其 中, 所述第二层微带天线和第三层微带天线的金属化中心过孔和金属化过孔 设置有介质套。
3、 根据权利要求 1所述的组合天线, 其中, 所述第一层微带天线的第一 辐射片具有一切角。
4、 根据权利要求 1所述的组合天线, 其中, 所述第一层微带天线底部有 发射板, 在反射板上设置有反射板避空层, 以及所述第一层微带天线反射板 的下面还设有控深孔。
5、 根据权利要求 1所述的组合天线, 其中, 所述第二层微带天线的第二 辐射片上四边分別设置有三个凸起。
6、 根据权利要求 1所述的组合天线, 其中, 所述第二层微带天线的底部 设有反射板, 在反射板上设置有反射板避空层, 以及在第二层微带天线反射 板的下面设有控深孔。
7、 根据权利要求 1所述的组合天线, 其中, 第三层微带天线的第三辐射 片的四边分別设置有三个凸起。
8、 根据权利要求 1所述的组合天线, 其中, 所述第三层微带天线的底部 设有反射板, 在反射板上设置有反射板避空层。
9、 一种手持天线装置, 其特征在于, 包括权利要求 1至 8任一所述的组 合天线, 第一层微带天线通过馈电网络输出信号给射频接收模块; 第二层微 带天线通过馈电网络输出信号给射频发射模块; 第三层微带天线通过馈电网 络输出信号给射频接收模块。
10、 根据权利要求 9所述的装置, 其特征在于, 所述第二层微带天线的 第二辐射片的两馈电针之间相位差为 90度, 通过 90度移相馈电网络实现左 旋圆极化, 输出信号给射频发射模块; 所述第三层微带天线的第三辐射片的 两馈电针之间相位差为 90度, 通过 90度移相馈电网络实现右旋圆极化, 输 出信号给射频接收模块。
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