CN203377376U - A small-size broadband helical antenna - Google Patents
A small-size broadband helical antenna Download PDFInfo
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- CN203377376U CN203377376U CN201320492503.6U CN201320492503U CN203377376U CN 203377376 U CN203377376 U CN 203377376U CN 201320492503 U CN201320492503 U CN 201320492503U CN 203377376 U CN203377376 U CN 203377376U
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- helical antenna
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Abstract
The utility model provides a small-size broadband helical antenna comprising a dielectric substrate, a feed coaxial cable, a helical line printed on the front surface of the dielectric substrate, a matching adjusting disc, and an annular microstrip line, wherein the matching adjusting disc and the annular microstrip line are printed on the back surface of the dielectric substrate. The matching adjusting disc is provided with a hole at the center; the inner core of the feed coaxial cable passes through the dielectric substrate from the hole of the center of the matching adjusting disc and is then connected with the center of the helical line; and the outer core of the feed coaxial cable is connected with the matching adjusting disc. A planar earth plate can be printed on the edge of the front surface of the dielectric substrate and is connected with the annular microstrip line through a plurality of metalized via holes. The small-size broadband helical antenna covers wide-range frequency bands and supports a plurality of mobile communication systems such as GSM, DCS and CDMA. The main body of the antenna is small in size and the miniaturization and broadband of the helical antenna are achieved.
Description
Technical field
The utility model relates to the radio antenna field, particularly a kind of small wide frequency band helical antenna.
Background technology
Along with the development of wireless communication technology, communication system is more and more higher to the requirement of antenna.One of them requirement is broadband, wishes that common antenna can support the wireless communication system of a plurality of standards simultaneously.Another requirement is miniaturization, and one of benefit of bringing after antenna miniaturization is the volume that reduces antenna system, and second benefit is to be conducive to installation, in addition, can reduce the negative effect that public's perception is caused after antenna miniaturization.
Helical antenna is a kind of all channel antenna commonly used.But helical antenna is excessive for its area of low frequency applications, and, for helical antenna is carried out to feed, need a wide band feeding network.A kind of typical helical antenna wideband feeding network is transition line Ba Lun.Transition line Ba Lun is general vertical with helical planes, and because its length is larger, so the vertical volume of helical antenna of transition line Ba Lun feed is larger.And the helical antenna of Ba Lun feed is installed fixing inconvenient.
Another problem of conventional helical antenna is the flexible control that can't realize directional diagram.The parameter of helical antenna is calculated by the helical curve equation, and after helical curve is fixing, the directional diagram of helical antenna is also just fixing, for indexs such as the deviation in roundness of helical antenna, axial ratios, can't adjust.
Helical antenna radiation in the horizontal direction is omnidirectional radiation.In some application scenario, wish that antenna had both had large bandwidth and little volume, can carry out radiation to certain specific direction again on horizontal plane, on horizontal plane, have directed radiance.In mobile communication indoor distribution system, the horizontal orientation radiating antenna can be used as directional ceiling antenna or directed wall aerial.A kind of method that makes helical antenna produce the horizontal orientation antenna pattern is to increase a metal baffle in the antenna side, makes electromagnetic wave run into reflection in the opposite direction after metal baffle, thereby produces directed directional diagram.But this need to increase extra metal baffle, and the height that metal baffle need to be certain, therefore be unfavorable for the miniaturization of antenna.
The utility model content
For solving the above technical problem, the utility model aims to provide a kind of small wide frequency band helical antenna, and large bandwidth is provided in little volume, and can realize omnidirectional radiation or directed radiation on horizontal plane.
The technical solution of the utility model is a kind of small wide frequency band helical antenna, comprise medium substrate, feed coaxial line, be printed on the helix in medium substrate front, the match and regulate disk that is printed on the medium substrate back side and annular microstrip line, the center of match and regulate disk arranges a perforate, the inner core of feed coaxial line is connected with the center of helix through medium substrate from the perforate of match and regulate disc centre, and outer core and the match and regulate disk of feed coaxial line link together.
And the diameter of described match and regulate disk is less than half of helix outmost turns diameter.
And the external diameter of described annular microstrip line is greater than the external diameter of helix outmost turns, and be less than the external diameter of helix time outer ring.
And the edge in described medium substrate front is printed with the plane ground plate, the plane ground plate is connected with annular microstrip line by some metallization via holes.
And, described plane ground plate be shaped as arc.
The utility model provides a kind of miniaturization, broadband helical antenna cheaply.This antenna can be realized omnidirectional or directed radiance by different Pattern control structures is set on horizontal plane.
The accompanying drawing explanation
The perspective view that Fig. 1 is the utility model the first embodiment;
The Facad structure schematic diagram that Fig. 2 is the utility model the first embodiment;
The structure schematic diagram that Fig. 3 is the utility model the first embodiment;
The Facad structure schematic diagram that Fig. 4 is the utility model the second embodiment;
The structure schematic diagram that Fig. 5 is the utility model the second embodiment;
Fig. 6 is the utility model application example size schematic diagram;
embodiment
Describe technical solutions of the utility model in detail below in conjunction with drawings and Examples.
Referring to Fig. 1 to Fig. 3, the first helical antenna that embodiment provides of the present utility model is by medium substrate 1, be printed on the helix 2 in medium substrate 1 front, be printed on match and regulate disk 3 and the annular microstrip line 4 at medium substrate 1 back side, and form for the feed coaxial line 5 that helical antenna is carried out to feed.In embodiment, medium substrate 1 adopts circular slab, and match and regulate disk 3, annular microstrip line 4, helix 2 are concentric with medium substrate 1, the center of match and regulate disk 3 in medium substrate 1 back side, the edge of annular microstrip line 4 in medium substrate 1 back side.The central start of helix 2 is labeled as center 8 in the drawings, and outmost turns is labeled as 10, and inferior outer ring is labeled as 11.Feed coaxial line 5 comprises inner core 7 and outer core 9, outer core 9 parcel inner cores 7.The middle part of match and regulate disk 3 arranges a perforate 6, and inner core 7(is the inner wire of feeder cable) from this perforate 6, through medium substrate 1 and the center 8 of helix, link together.Outer core 9(is the outer conductor of feeder cable) with match and regulate disk 3, link together.
Size and the position of match and regulate disk 3 play key effect to matching performance.By changing diameter and the position of match and regulate disk 3, can make helical antenna realize coupling in broadband.The utility model further advises, the diameter of match and regulate disk 3 can not surpass half of helix outmost turns 10 diameters, otherwise matching performance worsens, and do not realize Broadband Matching.With respect to the helical antenna that adopts the Ba Lun feed, matching structure of the present utility model and irradiation structure are positioned on same medium substrate 1, have greatly reduced the volume of antenna.
The annular microstrip line 4 that is printed on medium substrate 1 back side plays control helical antenna directional diagram.By external diameter and the internal diameter that changes annular microstrip line 4, deviation in roundness and the axial ratio of directional diagram that can the adjustable screw antenna.The utility model further advises that the external diameter of annular microstrip line 4 is greater than the external diameter of helix outmost turns 10, the internal diameter of annular microstrip line 4 is less than the external diameter of helix time outer ring 11, in this case, annular microstrip line 4 is the radiance of adjustable screw antenna effectively both, does not affect again the impedance matching of helical antenna.
The second embodiment of the present utility model is for a kind of helical antenna that has directed radiation on horizontal plane is provided.Referring to Fig. 4 and Fig. 5, the second embodiment of the present utility model further improves on the basis of the first embodiment, and the edge that is included in medium substrate 1 front is provided with a plane ground plate 12, can arrange by printing.Plane ground plate 12 is connected with the annular microstrip line 4 at medium substrate 1 back side by some metallization via holes 13.Separate certain distance between plane ground plate 12 and helix 2.Preferably, the distance between plane ground plate 12 and helix 2 is less than 1/4th central task frequency wavelengths.Plane ground plate 12, metallization via hole 13 forms the Pattern control structure of directed helical antenna together with annular microstrip line 4, the antenna pattern of helical antenna is offset on horizontal plane, thereby realizes directed radiation.When plane ground plate 12 is arc, by adjusting position and the internal-and external diameter of plane ground plate 12, can make directional diagram deflection than the horizontal grounding structure of small size.With respect to adopting individual metal plates to realize the mode of antenna direction radiation, Pattern control structure of the present utility model and irradiation structure are positioned on same medium substrate, thereby have reduced the volume of antenna.
Referring to Fig. 6, as an application example of the present utility model, the utility model can cover the 806-2500MHz frequency range, support GSM, DCS, a plurality of mobile communication standards such as CDMA, the antenna body partial volume is only Φ 114.0000 for note antenna diameter in 114X114X2mm(figure), realized the miniaturization of helical antenna and broadband.
Although above the utility model is had been described in detail, the utility model is not limited to this, and those skilled in the art of the present technique can carry out various modifications according to principle of the present invention.Therefore, all modifications of doing according to the utility model principle, all should be understood to fall into protection range of the present utility model.
Claims (5)
1. a small wide frequency band helical antenna, it is characterized in that: comprise medium substrate, feed coaxial line, be printed on the helix in medium substrate front, the match and regulate disk that is printed on the medium substrate back side and annular microstrip line, the center of match and regulate disk arranges a perforate, the inner core of feed coaxial line is connected with the center of helix through medium substrate from the perforate of match and regulate disc centre, and outer core and the match and regulate disk of feed coaxial line link together.
2. a kind of small wide frequency band helical antenna according to claim 1, it is characterized in that: the diameter of described match and regulate disk is less than half of helix outmost turns diameter.
3. a kind of small wide frequency band helical antenna according to claim 1, it is characterized in that: the external diameter of described annular microstrip line is greater than the external diameter of helix outmost turns, and is less than the external diameter of helix time outer ring.
4. according to claim 1 or 2 or 3 described a kind of small wide frequency band helical antennas, it is characterized in that: the edge in described medium substrate front is printed with the plane ground plate, and the plane ground plate is connected with annular microstrip line by some metallization via holes.
5. a kind of small wide frequency band helical antenna according to claim 4 is characterized in that: described plane ground plate be shaped as arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320492503.6U CN203377376U (en) | 2013-08-13 | 2013-08-13 | A small-size broadband helical antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320492503.6U CN203377376U (en) | 2013-08-13 | 2013-08-13 | A small-size broadband helical antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203377376U true CN203377376U (en) | 2014-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320492503.6U Expired - Lifetime CN203377376U (en) | 2013-08-13 | 2013-08-13 | A small-size broadband helical antenna |
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| CN (1) | CN203377376U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872450A (en) * | 2014-03-19 | 2014-06-18 | 安徽省广播电视科研所 | Thin-film digital television receiving antenna |
| CN105609947A (en) * | 2016-03-17 | 2016-05-25 | 青岛中科移动物联科技有限公司 | Miniature 433-MHz Archimedes planar single spiral antenna |
| CN106374214A (en) * | 2016-11-28 | 2017-02-01 | 重庆智能水表集团有限公司 | Mini spiral microstrip antenna |
| CN107331957A (en) * | 2017-07-07 | 2017-11-07 | 西安电子科技大学 | Mechanical reconfigurable array antenna produces the device and method of multi-modal orbital angular momentum |
| CN109037915A (en) * | 2018-06-14 | 2018-12-18 | 杭州电子科技大学 | Miniature omnidirectional microstrip antenna |
| CN109921168A (en) * | 2019-02-16 | 2019-06-21 | 江苏中科智睿物联网科技有限公司 | A kind of flare shape super wide band plane single pole sub antenna |
| CN112038778A (en) * | 2020-08-18 | 2020-12-04 | 北京邮电大学 | Broadband circularly polarized antenna array |
-
2013
- 2013-08-13 CN CN201320492503.6U patent/CN203377376U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103872450A (en) * | 2014-03-19 | 2014-06-18 | 安徽省广播电视科研所 | Thin-film digital television receiving antenna |
| CN105609947A (en) * | 2016-03-17 | 2016-05-25 | 青岛中科移动物联科技有限公司 | Miniature 433-MHz Archimedes planar single spiral antenna |
| CN106374214A (en) * | 2016-11-28 | 2017-02-01 | 重庆智能水表集团有限公司 | Mini spiral microstrip antenna |
| CN107331957A (en) * | 2017-07-07 | 2017-11-07 | 西安电子科技大学 | Mechanical reconfigurable array antenna produces the device and method of multi-modal orbital angular momentum |
| CN109037915A (en) * | 2018-06-14 | 2018-12-18 | 杭州电子科技大学 | Miniature omnidirectional microstrip antenna |
| CN109037915B (en) * | 2018-06-14 | 2020-07-07 | 杭州电子科技大学 | Miniature omnidirectional microstrip antenna |
| CN109921168A (en) * | 2019-02-16 | 2019-06-21 | 江苏中科智睿物联网科技有限公司 | A kind of flare shape super wide band plane single pole sub antenna |
| CN112038778A (en) * | 2020-08-18 | 2020-12-04 | 北京邮电大学 | Broadband circularly polarized antenna array |
| CN112038778B (en) * | 2020-08-18 | 2021-07-02 | 北京邮电大学 | Broadband circularly polarized antenna array |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 430205 Hubei city of Wuhan province Jiangxia Hidden Dragon Island Tan lake two Road No. 1 Patentee after: CITIC Mobile Communication Technology Co.,Ltd. Address before: 430073 Hubei city of Wuhan province Wuhan Dongxin East Lake high tech Development Zone, Road No. 5 Patentee before: Wuhan Hongxin Telecommunication Technologies Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430205 No.1 tanhu 2nd Road, Canglong Island, Jiangxia District, Wuhan City, Hubei Province Patentee after: CITIC Mobile Communication Technology Co.,Ltd. Address before: 430205 No.1 tanhu 2nd Road, Canglong Island, Jiangxia District, Wuhan City, Hubei Province Patentee before: CITIC Mobile Communication Technology Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140101 |