CN105186118A - Printed quasi-yagi antenna with parabolic boundary reflector - Google Patents
Printed quasi-yagi antenna with parabolic boundary reflector Download PDFInfo
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- CN105186118A CN105186118A CN201510486963.1A CN201510486963A CN105186118A CN 105186118 A CN105186118 A CN 105186118A CN 201510486963 A CN201510486963 A CN 201510486963A CN 105186118 A CN105186118 A CN 105186118A
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- feeder line
- medium substrate
- reflector
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- active dipole
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Abstract
The invention relates to a printed quasi-yagi antenna and especially relates to a printed quasi-yagi antenna with a parabolic boundary reflector. By using the antenna of the invention, a problem that a gain of a printed quasi-yagi antenna of an existing single director is small so that an actual need can not be satisfied is solved. The antenna comprises a medium substrate, a director, the reflector, a right-side long-strip feeder line, a back-side rectangular feeder line, a back-side first long strip feeder line, a back-side second long strip feeder line and two active oscillator arms. The reflector is printed on a right side of the medium substrate. The reflector is a closed metal layer formed by a sunken parabolic edge and a linear edge. The linear edge of the reflector is superposed with a bottom edge of the medium substrate. The director is printed on an upper portion of the right side of the medium substrate. The two active oscillator arms are printed on a center portion of the right side of the medium substrate in a line shape. The antenna is used for a wireless communication field.
Description
Technical field
The present invention relates to a kind of printing Quasi-Yagi antenna, be specifically related to a kind of printing Quasi-Yagi antenna with Parabolic Boundary reflector, belong to wireless communication field.
Background technology
In a communications system, be used as to launch or receive electromagnetic equipment to be called antenna, electromagnetic power conversion can effectively by the electromagnetic energy that the power conversion of electric current or guided wave is same frequency, or be the electric current of same frequency or the energy of guided wave by antenna effectively.Directional Antenna is also referred to as Yagi antenna, invented with space field Taro by the Yagi spark gap show time of northeastern Japan university nineteen twenty-eight, so far the history in an existing nearly century, since appearance, because it has simple structure and higher gain, be widely used in radar system and radio communication.Three pairs of oscillators are principal characters of typical Yagi antenna, whole antenna structure similar " king " font.Occupy the title active dipole arm being connected to feeder line among three pairs of oscillators, namely the centre one of " king " word is horizontal.Medium substrate is more a little longer than active dipole arm in the side of active dipole arm, and role weakens electromagnetic wave that is that transmit from this direction or that go out from this antenna transmission; Director active dipole arm opposite side and length is slightly shorter than active dipole arm, can strengthen to this side to the electric wave launched or transmit from this direction.Due in global range in recent years, the demand of the portable set with GPS function is constantly increased, such as smart mobile phone, GPS navigator, notebook computer etc.Embedded GPS antenna has caused a lot of concerns of academia and industrial circle.In order to receive better signal quality from satellite, the main radiation direction of gps antenna should directly point into the sky.As everyone knows, Yagi antenna has good directivity, is therefore applicable to instruction radio communication, therefore Yagi antenna obtains good research and apply.In portable equipment, consider limited equipment volume and the space of printing board PCB, the simple antenna design of complanation is more desirable.The design of planographic Quasi-Yagi antenna can make antenna on end-on direction, have very high directivity, only at single direction, multiple directions realizes greatest irradiation.Therefore this Antenna Design is particularly useful for the above-mentioned portable mobile equipment with GPS function.This antenna has the features such as gain is high, section is low, feed is simple.
Summary of the invention
The present invention is that to solve the printing Quasi-Yagi antenna gain of existing single director less, cannot meet the problem of reality need, and then propose a kind of printing Quasi-Yagi antenna with Parabolic Boundary medium substrate.
The present invention is the technical scheme taked that solves the problem: the present invention includes medium substrate, director, reflector, front strip feeder line, back side rectangle feeder line, the back side first strip feeder line, the back side second strip feeder line and two active dipole arms, reflector is printed on the front of medium substrate, reflector forms closed metal layer by recessed parabola limit and straight line, and the base coincident of the straight line of reflector and medium substrate, director is printed on the top in medium substrate front, two active dipole arms are the middle part that yi word pattern is printed on medium substrate front, two active dipole arms constitute active dipole, the right-hand member being positioned at the active dipole arm in left side is connected by the middle part of front strip feeder line with the parabola limit of reflector, back side rectangle feeder line is printed on the back side of medium substrate, the right-hand member of back side rectangle feeder line is connected with the upper end of the back side first strip feeder line, the lower end of the back side first strip feeder line is connected with the base at the medium substrate back side by the back side second strip feeder line, the left end being positioned at the active dipole arm on right side is provided with metallization via hole, metallization via hole is from top to bottom successively through the active dipole arm being positioned at right side, medium substrate, back side rectangle feeder line.
The invention has the beneficial effects as follows: well, frequency bandwidth is 2.28-2.63GHz, and center frequency point is 2.45GHz, and the average gain in this frequency band range is 6.5dBi, reaches maximum gain 7.5dBi at 2.5GHz place for emulation of the present invention and test result coupling.The present invention is easy to processing, and section is low, and feed is simple, and gain is high, can be used for S-band broadband wireless communications, especially can be used for TD-LTE, WLAN, Big Dipper generation navigation system.The medium substrate of printing Quasi-Yagi antenna is designed to parabola shaped by the present invention, and this medium substrate has better radiation stiffening effect compared to general medium substrate in radiation direction to antenna; The present invention loads a part of medium substrate and is used as di-lens to improve antenna gain in director front; The present invention connects upper strata active dipole arm and lower floor's feeder line by metal throuth hole, has broken away from double layer design, more with practical value.
Accompanying drawing explanation
Fig. 1 is Facad structure schematic diagram of the present invention, and Fig. 2 is structure schematic diagram of the present invention.
Embodiment
Embodiment one: composition graphs 1 and Fig. 2 illustrate present embodiment, described in present embodiment, a kind of printing Quasi-Yagi antenna with Parabolic Boundary reflector comprises medium substrate 1, director 2, reflector 3, front strip feeder line 4, back side rectangle feeder line 5, the back side first strip feeder line 6, the back side second strip feeder line 7 and two active dipole arms 8, reflector 3 is printed on the front of medium substrate 1, reflector 3 forms closed metal layer by recessed parabola limit 3-1 and straight line 3-2, and the base coincident of the straight line 3-2 of reflector 3 and medium substrate 1, director 2 is printed on the top in medium substrate 1 front, two active dipole arms 8 are printed on the middle part in medium substrate 1 front in yi word pattern, two active dipole arms 8 constitute active dipole, the right-hand member being positioned at the active dipole arm 8 in left side is connected by the middle part of front strip feeder line 4 with the parabola limit 3-1 of reflector 3, back side rectangle feeder line 5 is printed on the back side of medium substrate 1, the right-hand member of back side rectangle feeder line 5 is connected with the upper end of the back side first strip feeder line 6, the lower end of the back side first strip feeder line 6 is connected with the base at medium substrate 1 back side by the back side second strip feeder line 7, the left end being positioned at the active dipole arm 8 on right side is provided with metallization via hole 9, metallization via hole 9 is from top to bottom successively through the active dipole arm 8 being positioned at right side, medium substrate 1, back side rectangle feeder line 5.
In present embodiment, the computing formula of parabola limit 3-1 is y=x
2/ 84.
Embodiment two: composition graphs 1 and Fig. 2 illustrate present embodiment, described in present embodiment, a kind of medium substrate 1 of the printing Quasi-Yagi antenna with Parabolic Boundary reflector is rectangle, the length of medium substrate 1 is 122mm, and the width of medium substrate 1 is 72mm.
The technique effect of present embodiment is: so arrange, and impedance operator and the radiation characteristic of antenna are good.Other composition and annexation identical with embodiment one.
Embodiment three: composition graphs 1 and Fig. 2 illustrate present embodiment, described in present embodiment, a kind of director 2 of the printing Quasi-Yagi antenna with Parabolic Boundary reflector is rectangle, and the length of director 2 is 34mm, and the width of director 2 is 3mm.
The technique effect of present embodiment is: so arrange, and impedance operator and the radiation characteristic of antenna are good.Other composition and annexation identical with embodiment one.
Embodiment four: composition graphs 1 and Fig. 2 illustrate present embodiment, described in present embodiment, a kind of each active dipole arm 8 of the printing Quasi-Yagi antenna with Parabolic Boundary reflector is rectangle, the length of each active dipole arm 8 is 18mm, the width of each active dipole arm 8 is 3mm, distance Sr between the right-hand member of the active dipole arm 8 in left side and Parabolic Boundary 3-1 is 18mm, distance Sd between the active dipole arm 8 and director 2 on right side is 20mm, distance A between active dipole arm 8 on right side and front strip feeder line 4 is 0.8mm.
The technique effect of present embodiment is: so arrange, and impedance operator and the radiation characteristic of antenna are good.Other composition and annexation identical with embodiment one.
Embodiment five: composition graphs 1 and Fig. 2 illustrate present embodiment, the width of the front strip feeder line 4 of a kind of printing Quasi-Yagi antenna with Parabolic Boundary reflector described in present embodiment is 4mm, and the parabola limit 3-1 of the reflector 3 and distance Lm on medium substrate 1 base is 18mm.Other composition and annexation identical with embodiment one.
Embodiment six: composition graphs 1 and Fig. 2 illustrate present embodiment, the width of the back side rectangle feeder line 5 of a kind of printing Quasi-Yagi antenna with Parabolic Boundary reflector described in present embodiment is 3mm, the length 18mm of the back side first strip feeder line 6, the width of the back side first strip feeder line 6 is 4mm, and the width of the back side second strip feeder line 5-3 is 3mm.
The technique effect of present embodiment is: so arrange, and impedance operator and the radiation characteristic of antenna are good.Other composition and annexation identical with embodiment one.
Operation principle
The present invention adopts Parabolic Boundary medium substrate, makes active dipole arm be centrally located at its focal point place, and the length of optimal design director and director and active dipole arm distance, make energy onwards transmission to greatest extent, thus improve antenna gain.
The present invention records a part of medium substrate in director front, can be used as di-lens to improve antenna gain.The corner design of active dipole arm and the first strip feed connection effectively can improve antenna impedance characteristic.
Claims (6)
1. the printing Quasi-Yagi antenna with Parabolic Boundary reflector, it is characterized in that: described a kind of printing Quasi-Yagi antenna with Parabolic Boundary reflector comprises medium substrate (1), director (2), reflector (3), front strip feeder line (4), back side rectangle feeder line (5), the back side first strip feeder line (6), the back side second strip feeder line (7) and two active dipole arms (8), reflector (3) is printed on the front of medium substrate (1), reflector (3) forms closed metal layer by recessed parabola limit (3-1) and straight line (3-2), and the base coincident of the straight line (3-2) of reflector (3) and medium substrate (1), director (2) is printed on the top in medium substrate (1) front, two active dipole arms (8) are printed on the middle part in medium substrate (1) front in yi word pattern, two active dipole arms (8) constitute active dipole, the right-hand member being positioned at the active dipole arm (8) in left side is connected with the middle part on the parabola limit (3-1) of reflector (3) by front strip feeder line (4), back side rectangle feeder line (5) is printed on the back side of medium substrate (1), the right-hand member at back side rectangle feeder line (5) is connected with the upper end at the back side first strip feeder line (6), the lower end at the back side first strip feeder line (6) is connected with the base at medium substrate (1) back side by the back side second strip feeder line (7), the left end being positioned at the active dipole arm (8) on right side is provided with metallization via hole (9), metallization via hole (9) is from top to bottom successively through the active dipole arm (8) being positioned at right side, medium substrate (1), back side rectangle feeder line (5).
2. a kind of printing Quasi-Yagi antenna with Parabolic Boundary reflector according to claim 1, it is characterized in that: medium substrate (1) is rectangle, the length of medium substrate (1) is 122mm, and the width of medium substrate (1) is 72mm.
3. a kind of printing Quasi-Yagi antenna with Parabolic Boundary reflector according to claim 1, it is characterized in that: director (2) is rectangle, the length of director (2) is 34mm, and the width of director (2) is 3mm.
4. a kind of printing Quasi-Yagi antenna with Parabolic Boundary reflector according to claim 1, it is characterized in that: each active dipole arm (8) is rectangle, the length of each active dipole arm (8) is 18mm, the width of each active dipole arm (8) is 3mm, the distance (Sr) be positioned between the right-hand member of the active dipole arm (8) in left side and Parabolic Boundary (3-1) is 18mm, the distance (Sd) be positioned between the active dipole arm (8) on right side and director (2) is 20mm, the distance (A) be positioned between the active dipole arm (8) on right side and front strip feeder line (4) is 0.8mm.
5. a kind of printing Quasi-Yagi antenna with Parabolic Boundary reflector according to claim 1, it is characterized in that: the width in front strip feeder line (4) is 4mm, the parabola limit (3-1) of reflector (3) and the distance (Lm) on medium substrate (1) base are 18mm.
6. a kind of printing Quasi-Yagi antenna with Parabolic Boundary reflector according to claim 1, it is characterized in that: the width at back side rectangle feeder line (5) is 3mm, the length 18mm at the back side first strip feeder line (6), the width at the back side first strip feeder line (6) is 4mm, and the width at the back side second strip feeder line (5-3) is 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510486963.1A CN105186118A (en) | 2015-08-10 | 2015-08-10 | Printed quasi-yagi antenna with parabolic boundary reflector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510486963.1A CN105186118A (en) | 2015-08-10 | 2015-08-10 | Printed quasi-yagi antenna with parabolic boundary reflector |
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| CN105186118A true CN105186118A (en) | 2015-12-23 |
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| CN201510486963.1A Pending CN105186118A (en) | 2015-08-10 | 2015-08-10 | Printed quasi-yagi antenna with parabolic boundary reflector |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069203A (en) * | 2017-04-15 | 2017-08-18 | 深圳市景程信息科技有限公司 | Miniaturization high-gain filtering is antenna integrated |
| CN107230828A (en) * | 2017-04-15 | 2017-10-03 | 深圳市景程信息科技有限公司 | Miniaturization filtering is antenna integrated |
| CN108232422A (en) * | 2017-12-29 | 2018-06-29 | 维沃移动通信有限公司 | A kind of antenna and mobile radio terminal |
| CN109256611A (en) * | 2018-11-07 | 2019-01-22 | 中国电子科技集团公司第五十四研究所 | A kind of high-gain Yagi antenna and preparation method thereof |
| CN110401020A (en) * | 2019-07-24 | 2019-11-01 | 维沃移动通信有限公司 | Antenna element and electronic equipment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103560325A (en) * | 2013-11-15 | 2014-02-05 | 西安电子科技大学 | Broadband Quari-Yagi antenna applied to multi-band frequency wireless communication system |
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2015
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103560325A (en) * | 2013-11-15 | 2014-02-05 | 西安电子科技大学 | Broadband Quari-Yagi antenna applied to multi-band frequency wireless communication system |
Non-Patent Citations (3)
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| F. MALEK等: ""Meandered Dipole Yagi-Uda Antenna with Parabolic Reflectors for Global Positioning System (GPS) Applications"", 《2013 LOUGHBOROUGH ANTENNAS & PROPAGATION CONFERENCE》 * |
| 倪国旗，等: ""一种微带准八木天线的改进设计"", 《微波学报》 * |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107069203A (en) * | 2017-04-15 | 2017-08-18 | 深圳市景程信息科技有限公司 | Miniaturization high-gain filtering is antenna integrated |
| CN107230828A (en) * | 2017-04-15 | 2017-10-03 | 深圳市景程信息科技有限公司 | Miniaturization filtering is antenna integrated |
| CN108232422A (en) * | 2017-12-29 | 2018-06-29 | 维沃移动通信有限公司 | A kind of antenna and mobile radio terminal |
| CN109256611A (en) * | 2018-11-07 | 2019-01-22 | 中国电子科技集团公司第五十四研究所 | A kind of high-gain Yagi antenna and preparation method thereof |
| CN110401020A (en) * | 2019-07-24 | 2019-11-01 | 维沃移动通信有限公司 | Antenna element and electronic equipment |
| US11984645B2 (en) | 2019-07-24 | 2024-05-14 | Vivo Mobile Communication Co., Ltd. | Antenna element and electronic device |
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Application publication date: 20151223 |
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