CN105514582A - Four-arm spiral antenna - Google Patents

Four-arm spiral antenna Download PDF

Info

Publication number
CN105514582A
CN105514582A CN 201510916686 CN201510916686A CN105514582A CN 105514582 A CN105514582 A CN 105514582A CN 201510916686 CN201510916686 CN 201510916686 CN 201510916686 A CN201510916686 A CN 201510916686A CN 105514582 A CN105514582 A CN 105514582A
Authority
CN
Grant status
Application
Patent type
Prior art keywords
arm
spiral
coil
arm portion
helical antenna
Prior art date
Application number
CN 201510916686
Other languages
Chinese (zh)
Inventor
王冠君
吕波
陈林
胡朝斌
吉青
Original Assignee
上海海积信息科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/36Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/36Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/50Structural association of antennas with earthing switches, lead-in devices or lightning protectors

Abstract

The invention discloses a four-arm spiral antenna. The four-arm spiral antenna comprises a spiral arm, and the spiral arm comprises a first spiral arm portion, at least one second spiral arm portion arranged at an interval from the first spiral arm portion, and a third spiral arm portion, wherein one end of the first spiral arm portion and one end of the second spiral arm portion are connected with one end of the third spiral arm portion, and the other end of the third spiral arm portion is connected with a spiral arm feed end feeding the spiral arm. The spiral antenna provided by the invention can realize multi-frequency-range work of more than two frequency ranges with quite large frequency intervals and can also adjust input impedance of the spiral antenna through structural adjustment of the spiral arm of the spiral antenna so as to realize impedance match between an input port and a feed pot, reduce energy loss and improve the overall gain of the antenna. The spiral antenna provided by the invention is compact in structure, light in weight, small in volume and easy to process.

Description

四臂螺旋天线 Quadrifilar helical antenna

技术领域 FIELD

[0001]本发明属于天线技术领域,具体涉及一种螺旋天线,尤其涉及一种四臂螺旋天线。 [0001] The present invention belongs to the technical field of an antenna, particularly to a helical antenna, particularly to a quadrifilar helical antenna.

背景技术 Background technique

[0002]随着卫星导航系统的发展,特别是随着我国北斗卫星导航系统的建设发展和日臻完善,基于北斗卫星的导航定位和移动通信在军事和民用领域获得了越来越多的应用,比如运输监控、水文监测、防洪抗汛,以及提供定位、通信和授时等综合服务,从而在人们的工作生活中起到了越来越重要的作用。 [0002] With the development of satellite navigation systems, especially with the construction and development of China's Beidou satellite navigation system and improving, the Beidou navigation and positioning satellite and mobile communications-based access to more and more applications in military and civilian fields, such as transport monitoring, hydrological monitoring, flood control and anti-flood, as well as to provide positioning, communications, and timing and other integrated services, which played in people's work lives more and more important role.

[0003]在卫星导航技术和卫星通信技术中,作为卫星信号的接收和发射天线,螺旋天线、特别是四臂螺旋天线(QuadrifiIar Helix Antenna,QHA)是一种具有圆极化和宽波束特性的天线,其辐射方向图呈心型,而且前后比优异,且不需要接地,因此被广泛应用于卫星通信和全球定位系统等无线电技术领域。 [0003] In the satellite navigation technology and satellite communications, as the receiving and transmitting antenna satellite signals, the helical antenna, especially quadrifilar helical antenna (QuadrifiIar Helix Antenna, QHA) is a circular polarization and having a wide beam characteristic antenna radiation pattern as a heart-shaped, and is excellent in front than, and does not require grounding, is widely used in technical field of radio communications and satellite global positioning system.

[0004]然而,现有的四臂螺旋天线属于窄带宽的谐振式天线,想要实现宽频或者两个以上频段的多频段工作是非常困难的,特别是现有的四臂螺旋天线无法实现频率相隔较远的两个以上频段的多频段工作,更无法实现调节四臂螺旋天线的输入阻抗,从而实现输入端口与馈电端口的阻抗匹配,以减小能量损失和提高天线整体增益。 [0004] However, the conventional quadrifilar helical antenna belongs to a narrow bandwidth resonant antenna, multi-band or broadband want to achieve two or more bands work is very difficult, especially conventional quadrifilar helical antenna frequency can not be achieved multi-band operation farther apart two or more bands, but can not be achieved adjust the input impedance of the quadrifilar helical antenna, thereby achieving the input port and the feed port of the impedance to reduce the overall energy loss and increasing antenna gain.

发明内容 SUMMARY

[0005]为解决上述技术问题,本发明提供一种螺旋天线,该螺旋天线能够实现频率相隔较远的两个以上频段的多频段工作。 [0005] To solve the above problems, the present invention provides a helical antenna, the multi-band helical antenna capable of operating frequencies far apart two or more frequency bands. 根据本发明的螺旋天线还能够通过四臂螺旋天线的螺旋臂的结构调整来调节螺旋天线的输入阻抗,从而实现输入端口与馈电端口的阻抗匹配,以减小能量损失和提高天线整体增益。 Adjusting the input impedance of the helical antenna of the helical antenna of the present invention can also be adjusted by the structure of the spiral arms of the quadrifilar helical antenna according to the input port in order to achieve impedance matching with the feed port, in order to reduce the energy loss and increasing the overall gain of the antenna.

[0006]本发明提供一种螺旋天线,包括螺旋臂,所述螺旋臂包括:第一螺旋臂部、至少一个第二螺旋臂部和第三螺旋臂部。 [0006] The present invention provides a helical antenna, comprising spiral arms, the spiral arm comprising: a first spiral arm, the at least one spiral arm and the second arm third spiral. 第一螺旋臂部和第二螺旋臂部间隔设置。 A first arm portion and a second helical coil arm intervals. 第一螺旋臂部的一端和第二螺旋臂部的一端与第三螺旋臂部的一端相连接。 A first and a second end of the coil end of the coil arm of the arm portion connected to one end of the third arm portion of the coil. 并且第三螺旋臂部的另一端与对螺旋臂馈电的螺旋臂馈电端相连接。 And the other end of the arm third spiral with spiral arms of the spiral arms of the feed connecting the feed end.

[0007]根据本发明的一个方面,第一螺旋臂部和第二螺旋臂部的螺旋半径相同,并且第一螺旋臂部和第二螺旋臂部的升角相同。 [0007] In accordance with one aspect of the present invention, a first helical coil radius the same spiral arm and the second arm, and the same lead angle of the first helical coil and the second arm portion of the arm portion.

[0008]根据本发明的一个方面,在展开成平面状态下,第一螺旋臂部和第二螺旋臂部相平行。 [0008] In accordance with one aspect of the present invention, in the deployed state of a plane, a first arm portion and a second helical coil parallel arm.

[0009]根据本发明的一个方面,第一螺旋臂部和第二螺旋臂部与第三螺旋部一体形成。 [0009] In accordance with one aspect of the present invention, a first arm portion and a second helical spiral arm portion is formed integrally with the third helical portion.

[0010]根据本发明的一个方面,第一螺旋臂部的另一端为自由端。 [0010] In accordance with one aspect of the present invention, the first coil and the other end is a free end of the arm.

[0011]根据本发明的一个方面,第二螺旋臂部的另一端为自由端。 [0011] In accordance with one aspect of the present invention, the second coil and the other end of the arm is a free end.

[0012]根据本发明的一个方面,第一螺旋臂部的长度大于第二螺旋臂部的长度。 [0012] In accordance with one aspect of the present invention, the first coil is greater than the length of the arm length of the arm of the second coil.

[0013] 根据本发明的一个方面,第一螺旋臂部比第二螺旋臂部长5_-80_。 [0013] In accordance with one aspect of the present invention, a first arm portion than the second helical coil Minister 5_-arm 80_.

[0014]根据本发明的一个方面,第一螺旋臂部的长度范围为20mm-200mm。 [0014] In accordance with one aspect of the present invention, the length of the first spiral arm is 20mm-200mm.

[0015]根据本发明的一个方面,第一螺旋臂部的长度范围为30mm-l 50mm。 [0015] In accordance with one aspect of the present invention, the length of the first spiral arm is 30mm-l 50mm.

[0016]根据本发明的一个方面,第一螺旋臂部的长度范围为40mm-l OOmm。 [0016] In accordance with one aspect of the present invention, the length of the first spiral arm is 40mm-l OOmm.

[0017]根据本发明的一个方面,第二螺旋臂部的长度范围为1mm-150mm。 [0017] In accordance with one aspect of the present invention, the second arm portion of the coil length in the range 1mm-150mm.

[0018]根据本发明的一个方面,第二螺旋臂部的长度范围为20mm-100mm。 [0018] In accordance with one aspect of the present invention, the second arm portion of the coil length in the range 20mm-100mm.

[0019]根据本发明的一个方面,第二螺旋臂部的长度范围为30mm-70mm。 [0019] In accordance with one aspect of the present invention, the arm length of the second coil is 30mm-70mm.

[0020]根据本发明的一个方面,第三螺旋臂部的长度范围为3mm-l 50mm。 [0020] In accordance with one aspect of the invention, the length of the third spiral arm is 3mm-l 50mm.

[0021]根据本发明的一个方面,第三螺旋臂部的长度范围为I Omm-120mm。 [0021] In accordance with one aspect of the present invention, the length range of the third arm portion of the coil is I Omm-120mm.

[0022 ]根据本发明的一个方面,第三螺旋臂部的长度范围为30mm-l OOmm。 [0022] In accordance with one aspect of the present invention, the length of the third spiral arm portion is 30mm-l OOmm.

[0023]根据本发明的一个方面,该螺旋天线还包括柱状支撑体,螺旋臂设置于柱状支撑体的外周壁上,柱状支撑体由介电材料制成。 [0023] In accordance with one aspect of the present invention, the helical antenna further comprises a cylindrical outer peripheral wall of the support, disposed on the spiral arms of the support pillar, the columnar support body made of a dielectric material.

[0024]根据本发明的一个方面,柱状支撑体由柔性材料制成,螺旋臂通过印刷工艺印制于展开状态的柱状支撑体的表面上。 [0024] In accordance with one aspect of the present invention, the columnar support body made of flexible material, spiral arms printed by a printing process on the surface of the columnar support body expanded state.

[0025]如此构造的螺旋天线结构紧凑,质量轻,体积小,并且易于加工。 [0025] The helical antenna thus constructed is compact, light weight, small size, and easy to process.

[0026]根据本发明的一个方面,第一螺旋臂部的另一端延伸到柱状支撑体的顶端,第三螺旋臂部的另一端延伸到所述柱状支撑体的底端。 [0026] In accordance with one aspect of the present invention, the first coil to the other end of the arm extends to the top of the column support member, the other end of the arm third spiral extends to the bottom end of the column support.

[0027]根据本发明的一个方面,该螺旋天线还包括馈电网络,馈电网络具有馈电单元和向螺旋臂馈电的螺旋臂馈电端。 [0027] In accordance with one aspect of the present invention, the helical antenna further comprises a feed network, the feed network and the feed unit having a feed spiral arm end to the power feeding spiral arms.

[0028]根据本发明的一个方面,螺旋天线为四臂螺旋天线,该四臂螺旋天线包括四个所述螺旋臂。 [0028] In accordance with one aspect of the invention, the helical antenna is a quadrifilar helical antenna, the antenna comprising four quadrifilar helix of the spiral arms.

[0029]根据本发明的螺旋天线,能够实现频率相隔较远的两个以上频段的多频段工作。 [0029] The helical antenna of the present invention, it is possible to realize multi-band operating frequencies far apart two or more frequency bands. 根据本发明的螺旋天线还能够通过螺旋天线的螺旋臂的结构调整来调节螺旋天线的输入阻抗,从而实现输入端口与馈电端口的阻抗匹配,以减小能量损失和提高天线整体增益。 Adjusting the input impedance of the helical antenna of the helical antenna of the present invention can also be adjusted by the structure of the spiral arms of the helical antenna according to the input port in order to achieve impedance matching with the feed port, in order to reduce the energy loss and increasing the overall gain of the antenna. 而且,本发明的螺旋天线结构紧凑,质量轻,体积小,并且易于加工。 Further, the helical antenna structure of the present invention is compact, light weight, small size, and easy to process.

附图说明 BRIEF DESCRIPTION

[0030]为了更清楚地说明本发明实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本申请的一些实施例,并不能理解为其对本发明的构成任何限制。 [0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, briefly describes the accompanying drawings required for describing the embodiments used in the following embodiments will be apparent in the following description are only some of the drawings of the present application embodiments, and it is not understood as constituting any limitation of the present invention. 对于本领域普通技术人员来讲,还可以根据这些附图获得其他实施例以及其他实施例相对应的附图。 For ordinary skill in the art, reference may also correspond to derive other drawings according to these embodiments and other embodiments.

[0031]图1是根据本发明的一个实施例的螺旋天线的示意性的立体图; [0031] FIG. 1 is a schematic perspective view of a helical antenna according to one embodiment of the present invention;

[0032]图2是根据本发明的一个实施例的螺旋天线展开为平面状态的示意性的视图; [0032] FIG. 2 is a schematic view of a flat expanded state in accordance with an embodiment of the helical antenna of the present invention;

[0033]图3是根据本发明的一个实施例的螺旋天线的馈电网络的示意性的结构图; [0033] FIG. 3 is a schematic structural view of the helical antenna feed network according to one embodiment of the present invention;

[0034]图4是根据本发明的又一个实施例的螺旋天线的示意性的立体图; [0034] FIG. 4 is a schematic perspective view of the present invention according to yet another embodiment of the helical antenna of the embodiment;

[0035]图5是根据本发明的又一个实施例的螺旋天线展开为平面状态的示意性的视图; [0035] FIG. 5 is a schematic view of a planar expanded state according to yet another embodiment of the helical antenna of the present invention;

[0036]图6是根据本发明的实施例一个实例的螺旋天线的回波损耗示意图; [0036] FIG. 6 is a schematic diagram of the helical antenna return loss of the embodiment of the present invention is one example;

[0037]图7是根据本发明的实施例一个实例的螺旋天线的高频增益辐射示意图; [0037] FIG. 7 is a schematic view of radiation of high-frequency gain of the helical antenna of the present embodiment of the invention, one example;

[0038]图8是根据本发明的实施例一个实例的螺旋天线的低频增益辐射示意图。 [0038] FIG. 8 is a schematic diagram of a low radiation gain of the helical antenna of the present embodiment of the invention, one example.

具体实施方式 detailed description

[0039]下面将结合附图,对本发明的一个以上的实施例的技术方案进行描述。 [0039] conjunction with the accompanying drawings below, the technical solutions of one or more embodiments of the present invention will be described. 显然,所描述的实施例仅是本申请一部分实施方式,而不是全部的实施方式。 Obviously, the described embodiments are merely a part of the present application embodiment, but not all embodiments. 需要说明的是,基于本发明中的这些实施例,本领域普通技术人员所获得的所有其他实施例,都属于本申请保护的范围。 Incidentally, in the present invention is based on these embodiments, all other embodiments obtained by those of ordinary skill in the art fall within the scope of protection of the present application.

[0040]根据本发明的实施例所提供的螺旋天线包括螺旋臂。 [0040] The helical antenna comprises a spiral arm embodiment of the present invention is provided. 螺旋臂包括第一螺旋臂部、至少一个第二螺旋臂部和第三螺旋臂部。 A first arm portion comprising a helical spiral arms, the at least one spiral arm and the second arm third spiral. 第一螺旋臂部和第二螺旋臂部间隔设置。 A first arm portion and a second helical coil arm intervals. 第一螺旋臂部的一端和第二螺旋臂部的一端与第三螺旋臂部的一端相连接。 A first and a second end of the coil end of the coil arm of the arm portion connected to one end of the third arm portion of the coil. 并且第三螺旋臂部的另一端与对螺旋臂馈电的螺旋臂馈电端相连接。 And the other end of the arm third spiral with spiral arms of the spiral arms of the feed connecting the feed end.

[0041]在下文所描述的本发明的实施例中,参照在卫星定位装置和卫星通信装置中常用的四臂螺旋天线对本发明进行说明,本领域的技术人员可以知道,这并不对本发明构成限制,本发明的概念、思想和构思可以运用到其他种类的螺旋天线。 [0041] In an embodiment of the present invention are described below with reference to commonly used in the satellite positioning device and a satellite communication apparatus quadrifilar helical antenna of the present invention will be described, those skilled in the art will be aware, this is not the present invention is configured limit, the concepts of the present invention, ideas and concepts may be applied to other types of helical antenna.

[0042]图1是根据本发明的一个实施例的四臂螺旋天线10的示意性的立体图。 [0042] FIG. 1 is a schematic perspective view of the quadrifilar helical antenna 10 according to an embodiment of the present invention. 图2是根据本发明的第一实施例的四臂螺旋天线10展开为平面状态的示意性的视图。 10 FIG. 2 is a developed view of a schematic planar state quadrifilar helical antenna according to a first embodiment of the present invention. 如图1和2所示,四臂螺旋天线10包括螺旋臂11。 1 and 2, quadrifilar helical antenna 102 comprises a helical arm 11. 螺旋臂11包括第一螺旋臂部111、第二螺旋臂部112和第三螺旋臂部113。 A first arm 11 comprises a helical coil arm 111, second arm portion 112 and the third spiral coil arm 113. 如图1和2所示,第一螺旋臂部111和第二螺旋臂部112间隔设置。 As shown in FIG. 1 and 2, a first helical coil 112 and the second arm portion 111 disposed spacer arm. 第一螺旋臂部111的一端和第二螺旋臂部112的一端与第三螺旋臂部113的一端相连接。 The first end of the coil to one end of arm 111 and a second end of the coil 112 of the third arm portion of the arm 113 is connected to the coil. 第三螺旋臂部113的另一端与对螺旋臂馈电的螺旋臂馈电端相连接。 The other end of the third arm portion 113 of the spiral of the spiral arms and the feeding end is electrically connected to the feeding spiral arms. 这里,如果没有特殊说明,术语“连接”一般是指电连接。 Herein, unless otherwise stated, the term "coupled" generally refers to electrical connection. 具体地说,四臂螺旋天线10包括4个螺旋臂U。 Specifically, quadrifilar helical antenna 10 comprises four spiral arms U. 由于4个螺旋臂11的结构是相似的,因此,为简洁起见,在附图中仅对一个螺旋臂11进行标记。 Because of the 4 spiral arms 11 are similar, and therefore, for brevity, only one screw in the drawing arm 11 is labeled.

[0043]如图1和2所示,第一螺旋臂部111和第二螺旋臂部112的螺旋半径相同。 [0043] FIGS. 1 and 2, a first arm portion and a second helical coil 112 is the same as the radius of the helical arm 111. 第一螺旋臂部111和第二螺旋臂部112的升角相同。 The first arm portion 111 and a second identical spiral lead angle of the arm 112. 进一步地说,如图2所示,在展开成平面状态下,第一螺旋臂部111和第二螺旋臂部112相平行。 Further to say, as shown in FIG 2, a plane in the deployed state, a first arm portion 111 and the second helical coil arm 112 in parallel. 进一步地说,第三螺旋臂部113与第一螺旋臂部111和第二螺旋臂部112的螺旋半径相同。 Further, he said arm portion 111 and the second helical coil 112 is the same as the radius of the third arm portion 113 of the first helical coil arm portion. 第三螺旋臂部113与第一螺旋臂部111和第二螺旋臂部112的升角相同。 The third arm portion 113 with the helical lead angle of the first arm portion 111 and the second spiral coil 112 of the same arm.

[0044]进一步地说,如图1和2所示,第一螺旋臂部111和第二螺旋臂部112与第三螺旋部113—体形成。 [0044] Further to say, 1 and 2, a first arm portion 111 and a second helical coil 112 and the third arm forming the coil portion 113- as shown in FIG 2.

[0045]在该实施例中,如图1和2所示,第一螺旋臂部111的另一端为自由端。 [0045] In this embodiment, 1 and 2, the first coil 2 and the other end of the arm 111 is a free end. 第二螺旋臂部112的另一端为自由端。 The other end of the second coil 112 is a free end of the arm. 这里,自由端是指不与其他物体电连接的一端。 Here, the free end refers to the end not connected electrically with other objects.

[0046]如图1所示,四臂螺旋天线10还包括柱状支撑体12,螺旋臂11设置于柱状支撑体12的外周壁上。 [0046] 1, quadrifilar helical antenna 10 further includes a cylindrical support 12, the coil supporting arm 11 is provided on the outer peripheral wall of cylindrical body 12. 柱状支撑体12可采用任何适合制作螺旋天线的形状,比如圆柱形、圆筒形、管状等。 12 may take any shape suitable for making the helical antenna columnar support member, such as cylindrical, the cylindrical, tubular and the like. 在一种具体实施方式中,柱状支撑体12可用片材或薄膜卷制而成。 In a specific embodiment, the sheet 12 may be a columnar member or a support made from a film roll. 柱状支撑体12由介电材料制成,优选柱状支撑体12材料是柔性介质薄膜。 A columnar support body 12 made of a dielectric material, preferably a material of the columnar support body 12 is a flexible dielectric film. 优选地,柱状支撑体12采用高介电常数的材料制成,所述材料例如是、但不限于树脂玻璃、塑料、陶瓷等。 Preferably, the support pillar 12 is made using a material of a high dielectric constant, a material such as, but not limited to resins, glass, plastic, ceramics and the like.

[0047]进一步地说,4个螺旋臂11通过本领域常用的螺旋臂11成型工艺形成于柱状支撑体12的外周壁上。 [0047] Further to say, four spiral arms 11 commonly used in the art by the present molding process spiral arms 11 formed on the outer peripheral wall 12 of the support pillar. 比如当柱状支撑体12由柔性材料制成时,4个螺旋臂11通过印刷工艺印制于展开状态的柱状支撑体12的表面上。 For example, when a columnar support body 12 is made of a flexible material, 4 spiral arms 11 by a printing process on the printing surface of the columnar support body 12 of the expanded state. 然后,通过卷曲该柔性材料成柱状从而获得支撑着4个螺旋臂11的柱状支撑体12。 Then, by crimping the flexible material in a columnar shape so as to obtain a columnar supports four spiral arms 11 of the support 12. 如此构造的四臂螺旋天线结构紧凑,质量轻,体积小,并且易于加工。 Thus constructed quadrifilar helical antenna is compact, light weight, small size, and easy to process.

[0048]如图1和2所示,第一螺旋臂部111的另一端延伸到柱状支撑体12的顶端。 [0048] FIGS. 1 and 2, the first coil and the other end of the arm 111 extends to the end of the columnar support body 12. 第三螺旋臂部113的另一端延伸到柱状支撑体12的底端。 The other end of the third spiral arm portion 113 extends to the bottom end 12 of the support pillar. 四臂螺旋天线10还包括底座13。 Quadrifilar helical antenna 10 further includes a base 13. 柱状支撑体12的底端与设置有馈电网络的底座13固定连接。 A bottom end provided with a cylindrical support 12 of the feeding network 13 is fixedly connected to the chassis.

[0049]在本实施例中,四臂螺旋天线10还包括馈电网络2。 [0049] In the present embodiment, quadrifilar helical antenna further comprises a feed network 10 2. 图3是根据本发明的一个实施例的四臂螺旋天线1的馈电网络2的示意性的结构图。 FIG 3 is a quadrifilar helical antenna feed structure embodiment in accordance with FIG schematically a network according to the invention 1 2. 如图3所示,馈电网络2具有馈电单元201和向螺旋臂馈电的螺旋臂馈电端。 As shown in FIG. 3, a feed network having two feed unit 201 and fed to the feeding spiral arms spiral arms ends. 馈电单元201可以是T形功分器、威尔金森功分器或者四臂电桥。 Feeding unit 201 may be T-shaped power divider, the Wilkinson power divider or a four-arm bridge.

[0050] 如图3所示,馈电网络2还包括传输线202、203、204、205和206,传输线203、204、205和206分别连接到与4个螺旋臂11相对应的螺旋臂馈电端。 [0050] As shown, the feed network 2 further includes a transmission line 202,203,204,205 and 206, transmission lines 203, 204 and 206 are respectively connected to four spiral arms 11 corresponding to the feeding spiral arms 3 end. 馈电网络2还包括同轴馈电端14。 2 further comprises a feed network coaxial feed end 14. 传输线202连接同轴馈电端14和馈电单元201。 Transmission line 202 connected to a coaxial feed end 14 and a feeding unit 201. 同轴馈电端14连接外部射频电路。 A coaxial feed terminal 14 is connected to an external RF circuit. 从而对四臂螺旋天线10的四个辅助臂11进行依次为90°相位差的等幅馈电。 Thereby four quadrifilar helical antenna 10 is an auxiliary arm 11 is sequentially fed 90 ° phase difference amplitude.

[0051]如此构造的四臂螺旋天线10可以同时有2个工作频段。 [0051] The thus constructed quadrifilar helical antenna 10 can have two operating frequency bands simultaneously. 具体而言,由第一螺旋臂部111和第三螺旋臂部113形成第一辐射体。 Specifically, a first radiator formed by a first arm portion 111 and the third spiral coil arm 113. 第一辐射体对应于一个工作频段(第一工作频段)。 A radiator corresponding to a first operating band (first operating band). 由第二螺旋臂部112和第三螺旋臂部113形成第二辐射体。 The second radiator of the second arm portion 112 and the third spiral coil arm portion 113 is formed. 第二辐射体对应于另一个工作频段。 The second radiator corresponding to the other operating band. 第一螺旋臂部111和第三螺旋臂部113的长度的总和为四分之一与其对应的工作波长的整数倍,即M*lambda/4(M为整数,lambda表示与其对应的工作波长)。 The sum of the length of the arm 111 and the third arm portion 113 of the first spiral coil is one quarter of a wavelength corresponding to an integer multiple of work, i.e., M * lambda / 4 (M is an integer, lambda represents a wavelength corresponding work) . 当M为奇数时,螺旋臂非馈电端开路;当M为偶数时,螺旋臂非馈电端短路。 When M is odd, non-feed end of the spiral arms open; when M is an even number, the non-feeding end of the spiral arms shorting. 四根螺旋臂馈电端的电流幅度相等,相邻端口的相位相差90度,即四个端口分别为0、90°、180°、270°。 Equal to the magnitude of the current four spiral arms of the feeding end, the phase difference between adjacent ports 90, i.e., four ports are 0,90 °, 180 °, 270 °. 同样,第二螺旋臂部112和第三螺旋臂部113的长度总和为四分之一与其对应的工作波长的整数倍。 Similarly, the sum of the second arm portion 112 and the third spiral coil arm 113 is an integral multiple of a length corresponding to a quarter of the operating wavelength.

[0052]进一步地说,在该实施例中,如图1和2所示,第一螺旋臂部111的长度大于第二螺旋臂部112的长度。 [0052] Further to say, in this embodiment, and as shown in FIG. 1, a first coil 111 is greater than the length of the arm length of the arm 112 of the second coil 2. 更具体地说,第一螺旋臂部111比第二螺旋臂部112长5mm-80mm。 More specifically, the first arm portion 111 than the second helical coil arm 112 length 5mm-80mm. 第一螺旋臂部111的长度范围为20mm-200mm。 The first arm portion 111 of the coil length is 20mm-200mm. 较好地,第一螺旋臂部111的长度范围为30mm_150mm。 Preferably, the length of the first arm portion 111 is helical 30mm_150mm. 更好地,第一螺旋臂部111的长度范围为40mm-100mm。 Preferably, the length of the first arm portion 111 of the coil is 40mm-100mm. 例如,第一螺旋臂部的长度可以是50mm,60mm,75mm。 For example, a first helical length of the arm may be 50mm, 60mm, 75mm. 第二螺旋臂部112的长度范围为1mm-150mm。 The second arm portion 112 of the coil length is 1mm-150mm. 较好地,第二螺旋臂部112的长度范围为20mm-100mm。 Preferably, the length of the second arm portion 112 is helical 20mm-100mm. 更好地,第二螺旋臂部112的长度范围为30mm-70mm。 Preferably, the length of the second arm portion 112 is helical 30mm-70mm. 例如,第二螺旋臂部112的长度可以是30mm,45mm,60mm。 For example, the length of the second helical arm portion 112 may be 30mm, 45mm, 60mm.

[0053] 第三螺旋臂部113的长度范围为3mm-150mm。 [0053] The third arm portion 113 of the coil length is 3mm-150mm. 较好地,第三螺旋臂部113的长度范围为10mm-120mm。 Preferably, the length of the third helical arm 113 is 10mm-120mm. 更好地,第三螺旋臂部113的长度范围为30111111-1001]11]1。 Preferably, the length of the third arm portion 113 of the coil 30111111-1001] 11] 1. 例如可以是501]1111,80mm,10mm0 May be, for example, 501] 1111,80mm, 10mm0

[0054]如此构造的螺旋天线10能够实现频率相隔较远的两个频段工作。 [0054] The helical antenna 10 thus configured can achieve two operating frequency bands farther apart. 根据本发明的螺旋天线还能够通过螺旋天线的螺旋臂的结构调整来调节四臂螺旋天线10的输入阻抗,从而实现输入端口与馈电端口的阻抗匹配,以减小能量损失和提高天线整体增益。 The helical antenna of the present invention is also capable of adjusting the input impedance of quadrifilar helical antenna 10 by adjusting the structure of the spiral arms of the helical antenna, thereby achieving the input port and the feed port impedance matching, to reduce the energy loss and increasing the overall gain of the antenna . 具体而言,通过调节第三螺旋臂部113的长度来调节为四分之一与其对应的工作波长的整数倍,从而实现输入端口与馈电端口的阻抗匹配,以减小能量损失和提高天线整体增益。 Specifically, be adjusted by adjusting the length of the third coil arm 113 is an integral multiple of one quarter of the operating wavelength corresponding thereto, so as to realize the input port and the feed port impedance matching to reduce energy loss and improve the antenna the overall gain.

[0055]以上参照图1-3对本发明的一个实施例进行了描述。 [0055] Referring to FIGS. 1-3 above one embodiment of the present invention have been described. 在对该实施例的描述中,只设置有一个第二螺旋臂部112。 In the description of this embodiment, provided with only one arm portion of the second coil 112. 本发明并不限于此。 The present invention is not limited thereto. 本发明还可以设置2个以上的第二螺旋臂部112。 The present invention may be provided two or more second helical arm 112. 在这种情况下,本实施例中对第二螺旋臂部112的描述同样适用于2个以上的第二螺旋臂部112中的每一个。 In this case, the present embodiment each of the arm portions 112 of the second embodiment of the spiral coil described in the second arm portion 112 are equally applicable to two or more. 也就是说,根据本发明的螺旋天线包括第一螺旋臂部、至少一个第二螺旋臂部、第三螺旋臂部。 That is, the helical antenna according to the present invention comprises a first spiral arm portion, at least a second spiral arm third spiral arm. 在这种情况下,每个第二螺旋臂部112的长度是不同的,以对应于不同的工作频段。 In this case, the length of each arm portion 112 of the second coil are different, corresponding to different operating frequency bands.

[0056]下面,参照图4和5描述根据本发明的又一个实施例的四臂螺旋天线20。 [0056] Next, with reference to FIGS. 4 and 5 described quadrifilar helical antenna 20 according to still another embodiment of the present invention. 在图4和图5中,四臂螺旋天线20与四臂螺旋天线10相同的部分被标记以相同的附图标记,并且省略对其的描述。 4 and 5, quadrifilar helical antenna 20 and the same parts quadrifilar helical antenna 10 are marked with the same reference numerals, and description thereof is omitted.

[0057] 如图4和5所示,四臂螺旋天线20包括螺旋臂21。 [0057] FIGS. 4 and 5, quadrifilar helical antenna 20 comprises a helical arm 21. 螺旋臂21包括第一螺旋臂部211、第二螺旋臂部212和第三螺旋臂部213。 A first arm 21 comprises a helical coil arm 211, second arm portion 212 and the third spiral coil arm 213. 与上一个实施例不同,在该实施例中,第一螺旋臂部211、第二螺旋臂部212相对于第三螺旋臂部213较长。 With a different embodiment, in this embodiment, the first spiral arm portion 211, second arm portion 212 with respect to the third spiral coil arm portion 213 is longer. 另外,第三螺旋臂部213的另一端(也就是靠近底座13的一端)的锐角部分被去除。 Further, the other end of the arm third spiral 213 (i.e. near one end of the base 13) of the acute angle portion is removed.

[0058]需要说明的是,在上一个实施例中的第三螺旋臂部113的另一端(也就是靠近底座13的一端)的锐角部分也可以被去除。 [0058] Note that in one embodiment of the third coil and the other end of the arm 113 (i.e. near one end of the base 13) of the acute angle portion may also be removed.

[0059]下面参照图6、7和8描述根据本发明的实施例的四臂螺旋天线的一个实例。 [0059] One example is described below with reference to FIG quadrifilar helical antenna according to an embodiment of the present invention are 6, 7 and 8. 以进一步理解本发明。 In a further understanding of the invention. 其中,图6是根据本发明的实施例一个实例的螺旋天线的回波损耗示意图;图7是根据本发明的实施例一个实例的螺旋天线的高频增益辐射示意图;图8是根据本发明的实施例一个实例的螺旋天线的低频增益辐射示意图。 Wherein FIG. 6 is a schematic diagram of return loss of a helical antenna according to an embodiment of the present invention, one example; FIG. 7 is an embodiment of the present invention, an example of the high frequency gain of the helical antenna radiation schematic; FIG. 8 is according to the present invention. low-frequency gain of the helical antenna radiation one example embodiment of FIG.

[0060]在该实例中,第一螺旋臂部的长度为75mm,第二螺旋臂部的长度为45mm,第三螺旋臂部的长度为10mm;第一辐射体长度为175mm(第一螺旋臂部加上第三螺旋臂部的长度)工作在GPS L2频段(1227MHz),第二辐射体长度为145mm(第二螺旋臂部加上第三螺旋臂部的长度)工作在GPS LI频段(1575MHz);其中,第一螺旋臂部、第二螺旋臂部和第三螺旋臂部印刷在直径为44mm、高度为136mm、厚度为0.1mm的柔性介质薄膜上,每个螺旋臂的升角为50.88度。 [0060] In this example, the length of the first spiral arm portion is 75mm, the length of the second spiral arm is 45mm, the length of the third spiral arm portion is 10mm; length of 175mm a first radiator (first spiral arm third helical portion plus the length of the arm) operates in GPS L2 band (1227MHz), the second radiator length is 145mm (plus a second spiral arm third spiral arm length) operates in GPS LI frequency (1575MHz ); wherein a first spiral arm, the second arm and the third spiral coil printed on a flexible arm dielectric film having a diameter of 44mm, a height of 136mm, thickness of 0.1mm, the lead angle of each spiral arm 50.88 degree. 图6为LI和L2频段的回波损耗图,图7和图8为高频和低频的左右旋增益辐射方向图。 FIG 6 is a LI and L2 band return loss, and FIG. 7 and FIG. 8 is a spin around the high and low frequency gain of the radiation pattern.

[0061 ] 上述实施例所公开的四臂螺旋天线的工作频段包括但不限于GPS: LI (1575MHz)、L2(1227MHz)、L5(1176MHz);BDl:Tx(1616MHz)、Rx(2492MHz);BD2:BI(1561MHz)、B2(1207MHz)、B3(1268MHz)和GLONASS: LI (1602MHz)、L2(1246MHz)。 [0061] The operation of the above disclosed embodiments of the quadrifilar helical antenna band include but are not limited to GPS: LI (1575MHz), L2 (1227MHz), L5 (1176MHz); BDl: Tx (1616MHz), Rx (2492MHz); BD2 : BI (1561MHz), B2 (1207MHz), B3 (1268MHz) and GLONASS: LI (1602MHz), L2 (1246MHz).

[0062]还需要说明的是,在本文中,诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来,而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。 [0062] It is further noted that, herein, relational terms such as first and second and the like are only used to distinguish one entity or operation from another entity or action without necessarily requiring or implying these the presence of any such actual relationship or order between such entities or operations. 而且,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者设备所固有的要素。 Further, the term "comprising", "containing" or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, article, or apparatus not include only those elements but not expressly listed further comprising the other elements, or further comprising such process, method, article, or apparatus inherent elements. 在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同或者等同要素。 Without more constraints, by the wording "include a ......" defining element, the element does not exclude the process, method, article, or apparatus existence of additional identical or equivalent elements. 另外,术语“上”、“下”、“顶”、“底”等并不构成绝对的空间关系限制,只是一种相对的概念。 Further, the terms "upper", "lower", "top", "bottom" and the like does not constitute an absolute spatial relationship constraints, only a relative concept.

[0063]以上对本申请所提供的一种螺旋天线进行了详细介绍,本文中应用了具体个例对本申请的原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本申请的方法及发明构思;同时,对于本领域的一般技术人员,依据本申请的思想,在具体实施方式及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本申请的限制。 [0063] or more of one of a coil antenna provided herein are described in detail herein through specific examples of the principles and embodiments of the present application are set forth above description of embodiments merely for understanding of the present disclosure methods and inventive concept; Meanwhile, those of ordinary skill in the art based on the idea of ​​the present disclosure, may make modifications to the specific embodiments and application scope of the specification shall not be construed as the present application limit.

Claims (10)

  1. 1.一种螺旋天线,包括螺旋臂,其特征在于,所述螺旋臂包括: 第一螺旋臂部; 至少一个第二螺旋臂部,所述第一螺旋臂部和所述第二螺旋臂部间隔设置;和第三螺旋臂部,所述第一螺旋臂部的一端和所述第二螺旋臂部的一端与所述第三螺旋臂部的一端相连接,并且所述第三螺旋臂部的另一端与对所述螺旋臂馈电的螺旋臂馈电端相连接。 A helical antenna, comprising spiral arms, characterized in that said spiral arm comprising: a first spiral arm portion; at least a second spiral arm, the first arm portion and said second helical coil arm intervals; and a third spiral arm portion, the first end of the coil and the second arm and the third arm end of the coil end of the coil is connected to the arm, and the arm third spiral the other end of the spiral arms of the spiral arms of the feed connecting the feed end.
  2. 2.如权利要求1所述的螺旋天线,其特征在于, 所述第一螺旋臂部和所述第二螺旋臂部的螺旋半径相同,并且所述第一螺旋臂部和所述第二螺旋臂部的升角相同。 2. The helical antenna according to claim 1, wherein said first arm and said second identical spiral spiral spiral radius arm and the first arm portion and said second helical coil same lead angle of the arm.
  3. 3.如权利要求1所述的螺旋天线,其特征在于, 在展开成平面状态下,所述第一螺旋臂部和所述第二螺旋臂部相平行。 3. The helical antenna according to claim 1, characterized in that, in the deployed state of a plane, the first arm portion and said second helical coil parallel arm.
  4. 4.如权利要求1所述的螺旋天线,其特征在于, 第一螺旋臂部和第二螺旋臂部与所述第三螺旋部一体形成。 4. The helical antenna according to claim 1, wherein the arm portion is integrally formed first and second helical coil and the third coil arm portion.
  5. 5.如权利要求1所述的螺旋天线,其特征在于, 所述第一螺旋臂部的另一端为自由端;或者所述第二螺旋臂部的另一端为自由端。 5. The helical antenna according to claim 1, wherein said first coil and the other end of the arm is a free end; the other end of the coil or the second arm portion is a free end.
  6. 6.如权利要求1所述的螺旋天线,其特征在于, 所述第一螺旋臂部的长度大于所述第二螺旋臂部的长度。 6. The helical antenna according to claim 1, wherein said first arm portion is greater than the length of the spiral coil length of the second arm.
  7. 7.如权利要求6所述的螺旋天线,其特征在于, 所述第一螺旋臂部的长度范围为20mm-200mm; 所述第二螺旋臂部的长度范围为10mm-150mm; 所述第一螺旋臂部比所述第二螺旋臂部长5mm-80mm; 所述第三螺旋臂部的长度范围为3mm-l 50mm。 7. The helical antenna according to claim 6, wherein the length of the arm portion of the first coil is 20mm-200mm; the length of the arm portion of the second coil 10mm-150mm; the first 5mm-80mm spiral arm portion than the second coil Minister arm; arm length of the third coil is 3mm-l 50mm.
  8. 8.如权利要求1所述的螺旋天线,其特征在于, 所述螺旋天线还包括柱状支撑体,所述螺旋臂设置于所述柱状支撑体的外周壁上,所述柱状支撑体由介电材料制成。 8. The helical antenna according to claim 1, wherein said helical antenna further comprises a cylindrical outer peripheral wall of the support, the spiral arm is disposed on the columnar support body, the cylindrical body is made of a dielectric support made of a material.
  9. 9.如权利要求8所述的螺旋天线,其特征在于, 所述柱状支撑体由柔性材料制成,所述螺旋臂通过印刷工艺印制于展开状态的柱状支撑体的表面上。 9. The helical antenna according to claim 8, wherein the columnar support body made of flexible material, the spiral arms printed by a printing process on the surface of the columnar support body expanded state.
  10. 10.如权利要求1-9中任何一项所述的螺旋天线,其特征在于, 所述螺旋天线为四臂螺旋天线,所述四臂螺旋天线包括四个所述螺旋臂。 10. A helical antenna according to any 1-9 claim, characterized in that the helical antenna is a quadrifilar helical antenna, a quadrifilar helical antenna comprising four of the spiral arms.
CN 201510916686 2015-12-10 2015-12-10 Four-arm spiral antenna CN105514582A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201510916686 CN105514582A (en) 2015-12-10 2015-12-10 Four-arm spiral antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201510916686 CN105514582A (en) 2015-12-10 2015-12-10 Four-arm spiral antenna

Publications (1)

Publication Number Publication Date
CN105514582A true true CN105514582A (en) 2016-04-20

Family

ID=55722378

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201510916686 CN105514582A (en) 2015-12-10 2015-12-10 Four-arm spiral antenna

Country Status (1)

Country Link
CN (1) CN105514582A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106058472A (en) * 2016-06-01 2016-10-26 深圳市华信天线技术有限公司 Dual-frequency and four-arm helical antenna and handheld terminal using the same

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6229499B1 (en) * 1999-11-05 2001-05-08 Xm Satellite Radio, Inc. Folded helix antenna design
US6621458B1 (en) * 2002-04-02 2003-09-16 Xm Satellite Radio, Inc. Combination linearly polarized and quadrifilar antenna sharing a common ground plane
US6720935B2 (en) * 2002-07-12 2004-04-13 The Mitre Corporation Single and dual-band patch/helix antenna arrays
WO2006045769A1 (en) * 2004-10-25 2006-05-04 Universite De Rennes 1 Multiband printed helical slot antenna
US20080174501A1 (en) * 2006-12-08 2008-07-24 Stanislav Licul Method and Apparatus for Quadrifilar Antenna with Open Circuit Element Terminations
CN101300717A (en) * 2005-09-22 2008-11-05 萨恩特尔有限公司 Mobile communication device and an antenna assembly for the device
CN101573835A (en) * 2006-11-28 2009-11-04 萨恩特尔有限公司 Dielectrically loaded antenna and an antenna assembly
CN101682120A (en) * 2007-03-13 2010-03-24 爱特纳公司 Structure of a square quadrifilar helical antenna
CN201576740U (en) * 2009-10-31 2010-09-08 华南理工大学 Dielectric-loaded four-arm helical antenna for power distribution phase shift feed network
CN103490159A (en) * 2013-09-29 2014-01-01 西安电子科技大学 GNSS multi-frequency satellite navigation antenna
CN104332704A (en) * 2014-11-10 2015-02-04 中国电子科技集团公司第五十四研究所 Handset terminal antenna for mobile satellite communication system
CN204216221U (en) * 2014-12-10 2015-03-18 南京长峰航天电子科技有限公司 2.8 GHz printing four-arm spiral antenna
KR101557291B1 (en) * 2013-10-10 2015-10-06 에이피위성통신주식회사 Quadrifilar Helix Antenna
CN204760536U (en) * 2015-07-08 2015-11-11 西安星网天线技术有限公司 Miniaturized handheld terminal of mobile satellite communication antenna
CN204809397U (en) * 2015-07-28 2015-11-25 北京旋极星达技术有限公司 Light small -size novel combination moves four arm helical antenna of looks GNSS

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6229499B1 (en) * 1999-11-05 2001-05-08 Xm Satellite Radio, Inc. Folded helix antenna design
US6621458B1 (en) * 2002-04-02 2003-09-16 Xm Satellite Radio, Inc. Combination linearly polarized and quadrifilar antenna sharing a common ground plane
US6720935B2 (en) * 2002-07-12 2004-04-13 The Mitre Corporation Single and dual-band patch/helix antenna arrays
WO2006045769A1 (en) * 2004-10-25 2006-05-04 Universite De Rennes 1 Multiband printed helical slot antenna
CN101300717A (en) * 2005-09-22 2008-11-05 萨恩特尔有限公司 Mobile communication device and an antenna assembly for the device
CN101573835A (en) * 2006-11-28 2009-11-04 萨恩特尔有限公司 Dielectrically loaded antenna and an antenna assembly
US20080174501A1 (en) * 2006-12-08 2008-07-24 Stanislav Licul Method and Apparatus for Quadrifilar Antenna with Open Circuit Element Terminations
CN101682120A (en) * 2007-03-13 2010-03-24 爱特纳公司 Structure of a square quadrifilar helical antenna
CN201576740U (en) * 2009-10-31 2010-09-08 华南理工大学 Dielectric-loaded four-arm helical antenna for power distribution phase shift feed network
CN103490159A (en) * 2013-09-29 2014-01-01 西安电子科技大学 GNSS multi-frequency satellite navigation antenna
KR101557291B1 (en) * 2013-10-10 2015-10-06 에이피위성통신주식회사 Quadrifilar Helix Antenna
CN104332704A (en) * 2014-11-10 2015-02-04 中国电子科技集团公司第五十四研究所 Handset terminal antenna for mobile satellite communication system
CN204216221U (en) * 2014-12-10 2015-03-18 南京长峰航天电子科技有限公司 2.8 GHz printing four-arm spiral antenna
CN204760536U (en) * 2015-07-08 2015-11-11 西安星网天线技术有限公司 Miniaturized handheld terminal of mobile satellite communication antenna
CN204809397U (en) * 2015-07-28 2015-11-25 北京旋极星达技术有限公司 Light small -size novel combination moves four arm helical antenna of looks GNSS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106058472A (en) * 2016-06-01 2016-10-26 深圳市华信天线技术有限公司 Dual-frequency and four-arm helical antenna and handheld terminal using the same

Similar Documents

Publication Publication Date Title
US2324462A (en) High frequency antenna system
US3906509A (en) Circularly polarized helix and spiral antennas
US5635945A (en) Quadrifilar helix antenna
US6759990B2 (en) Compact antenna with circular polarization
US6563468B2 (en) Omni directional antenna with multiple polarizations
EP1503451A1 (en) Mobile radio antenna
US5191352A (en) Radio frequency apparatus
US6653987B1 (en) Dual-band quadrifilar helix antenna
US20030201937A1 (en) Cylindrical double-layer microstrip array antenna
Massa A dual frequency microstrip patch antenna for high-precision GPS applications
JP2004088218A (en) Planar antenna
US6335710B1 (en) Tuneable spiral antenna
CN102280704A (en) One kind of a small-sized wide beamwidth circularly polarized antenna
US20120249396A1 (en) Wireless communications device including side-by-side passive loop antennas and related methods
US20110248895A1 (en) Mobile wireless terminal and antenna device
JP2002204117A (en) Antenna
US6522302B1 (en) Circularly-polarized antennas
JP2001024431A (en) Array antenna system
WO2002027862A1 (en) Omni directional antenna with multiple polarizations
CN1941503A (en) Microband antenna of S-band left-hand material
WO2008088099A1 (en) Balun internal type loop antenna
US20020000937A1 (en) Antenna apparatus and a portable wireless communication apparatus using the same
US3299429A (en) Vertical array of folded dipoles adjustably mounted on support mast
US6795023B2 (en) Broadband suspended plate antenna with multi-point feed
US20040008153A1 (en) Single and dual-band patch/helix antenna arrays

Legal Events

Date Code Title Description
C06 Publication
C10 Entry into substantive examination