CN203521601U - Small-size directional radiation printed antenna - Google Patents
Small-size directional radiation printed antenna Download PDFInfo
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- CN203521601U CN203521601U CN201320659731.8U CN201320659731U CN203521601U CN 203521601 U CN203521601 U CN 203521601U CN 201320659731 U CN201320659731 U CN 201320659731U CN 203521601 U CN203521601 U CN 203521601U
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- antenna
- conductive trace
- conductive path
- path line
- shaped conductive
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Abstract
The utility model discloses a small-size directional radiation printed antenna which comprises the following components: a feed conductive path line, a double-folding reverse-L-shaped conductive path line, a parasitic radiating unit and a metal floor. The lower end of the double-folding reverse-L-shaped conductive path line is connected with the feed conductive path line. The parasitic radiating unit is arranged right above the double-folding reverse-L-shaped conductive path line. The metal floor is arranged at the back surface of the feed conductive path line. Through utilizing a double-folding reverse-L-shaped space excitation structure, the small-size directional radiation printed antenna has the following functions: realizing an ideal directional radiating characteristic, adding the parasitic radiating unit, improving frontward radiation gain of the antenna, utilizing a space intercoupling principle, reducing occupation space through utilizing an antenna dense-arrangement technique, reducing antenna dimension, arranging a radiator and ground in planes which are parallel with each other through utilizing a printed planar antenna technique, sufficiently utilizing equipment space and facilitating integration between the antenna and the circuit board.
Description
Technical field
The utility model belongs to electronic communication field, relates in particular to a kind of miniaturization directed radiation printed antenna.
Background technology
Along with further investigation and the development of wireless communication technology, communication system performance is able to continuous lifting, and the design that antenna becomes more meticulous starts studied personnel to be paid close attention to and payes attention to, to meet all kinds of demands of new application characteristic and improving performance.For the current and following mobile terminal device, development trend is that volume is more and smaller and more exquisite, and profile is more and more attractive in appearance, and performance also will keep even realizing lifting simultaneously, and this has proposed strict even harsh requirement to Antenna Design.In traditional antenna design, take basic antenna prototype as basis, the size of reduction antenna is cost by take other performance of sacrificing antenna.And implement the become more meticulous thought of design of antenna, be to catch different application particular point, antenna structure is carried out to brand-new design, balancing antenna properties, realizes optimum Antenna Design scheme.
Directional radiation antenna, with respect to omnidirectional antenna, refers to that aerial radiation has obvious directivity.In the design of traditional directional antenna, often based on microstrip antenna and symmetrical dipole, add these two kinds of prototype antenna of reflecting plate and carry out structural adjustment and modification, to meet specific application demand.Directivity is being had to the occasion of requirements at the higher level, may also can use the aerial array that a plurality of antenna elements form.For fixing terminal equipment, due to also few to the size of antenna and weight limits in application, mostly can adopt this traditional directional antenna design.And in the design of portable mobile terminal equipment antenna, adopt the hand-hold type radio-frequency identification reader volume of traditional microstrip antenna and doublet antenna design all too huge, even needing to increase extra module provides suitable space and angle assembling antenna, and this has obviously increased the volume of equipment, the portable characteristics that has reduced equipment and aesthetic property.And the omnidirectional antenna of miniaturization design meets confined space size and structure needs with passive, cause antenna index to worsen, occurred that in some wireless application systems operating distance is not enough, the situation of poor signal quality.Propose a kind of directional radiation properties small and exquisite antenna of volume again that has, can meet the Antenna Design scheme that integration of equipmentsization can meet again prosthesis design needs and perplex designer.
Utility model content
The purpose of this utility model is to provide a kind of miniaturization directed radiation printed antenna, be intended to solve in the design of portable mobile terminal equipment antenna, be difficult to have concurrently directional radiation properties and have advantages of that again volume is small and exquisite, can not only meet integration of equipments but also meet the problem that prosthesis designs needs.
The utility model is achieved in that a kind of miniaturization directed radiation printed antenna, it is characterized in that, this miniaturization directed radiation printed antenna comprises: feed conductive trace, twofold inverted L-shaped conductive trace, parasitic radiation unit, metal floor;
Twofold inverted L-shaped conductive trace lower end connects feed conductive trace, and parasitic radiation unit is arranged at space directly over twofold inverted L-shaped conductive trace, and metal floor is arranged on the back side of feed conductive trace.
Further, twofold inverted L-shaped conductive trace adopts the external electromagnetic field incentive structure of two sections of long conductors that are parallel to each other.
Further, parasitic radiation unit adopts long narrow linear pattern or bending type, be positioned over twofold inverted L-shaped conductive trace directly over.
The miniaturization directed radiation printed antenna that the utility model provides, adopt twofold inverted L shape spatial excitation structure, can obtain desirable directional radiation properties, increased parasitic radiation unit, strengthened the forward radiation gain of antenna, utilized the mutual coupling principle in space, adopt antenna close-spaced technique, compressed space, dwindled the size of antenna, adopt printing flat plane antenna technology, radiant body and ground belong in the plane being parallel to each other, and make full use of the device space and are beneficial to antenna and circuit board integrated.
Accompanying drawing explanation
Fig. 1 is the structural representation of the miniaturization directed radiation printed antenna that provides of the utility model embodiment;
In figure: 1, feed conductive trace; 2, twofold inverted L-shaped conductive trace; 3, parasitic radiation unit; 4, metal floor.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The structure that Fig. 1 shows a kind of miniaturization directed radiation printed antenna of the present utility model comprises: feed conductive trace 1, twofold inverted L-shaped conductive trace 2, parasitic radiation unit 3, metal floor 4 form; Twofold inverted L-shaped conductive trace 2 lower ends connect feed conductive trace 1, twofold inverted L-shaped conductive trace 1 superjacent air space axis place, introduce the long narrow shape parasitic radiation of the independence unit 3 that a length is about 1/3rd operation wavelengths, the guiding function of performance space electromagnetic energy, metal floor 4 is arranged on the back side of feed conductive trace 1, and metal floor top edge and feed conductive trace upper edge are in same level height.
Twofold inverted L-shaped conductive trace 2 is equaled the wire of 3/4ths operation wavelengths through repeatedly bending by length, formation has the external electromagnetic field incentive structure that two sections of long conductors that are parallel to each other are principal character, twofold inverted L-shaped conductive trace 2 lower ends are directly connected with feed conductive trace 1, feed conductive trace 1 lower end and signal circuit line are directly connected to realize the feed of antenna, at twofold inverted L-shaped conductive trace 1 superjacent air space axis place, introduce the long narrow shape parasitic radiation of the independence unit 3 that a length is about 1/3rd operation wavelengths, the guiding function of performance space electromagnetic energy, realize the enhancing effect of top (forward direction) radiation,
Feed conductive trace 1 adopts microstrip line mode to form, but still can adopt the feed wire type constitution of other types, comprise and be not limited to two-conductor line, coaxial transmission line, coplanar waveguide transmission line and band line transmission line, adopt antenna close-spaced technique to realize the reduction of longitudinal size, concrete grammar is that parasitic radiation unit 3 and twofold inverted L-shaped conductive trace 2 spacing are compressed to 0.03 λ
0below, and adjust in twofold inverted L-shaped conductive trace 2 between two sections of parallel long conductors and the width of the distance of lower conductor and metal floor 4 top edges reach Antenna Impedance Matching;
The utility model adopts twofold inverted L shape spatial excitation structure, can obtain desirable directional radiation properties, increase parasitic radiation unit 3, strengthened the forward radiation gain of antenna, utilized the mutual coupling principle in space, adopt antenna close-spaced technique, compress space, dwindled the size of antenna, adopted printing flat plane antenna technology, antenna and ground belong in the plane being parallel to each other, and make full use of the device space and are beneficial to antenna and circuit board integrated; The lateral dimension of aerial radiation part is less than 0.37 λ
0, longitudinal size is less than radiant body 0.08 λ
0(λ
0centered by the corresponding free space wavelength of operating frequency), and traditional symmetrical dipole adds corresponding 0.5 λ that is of a size of of reflecting plate antenna
0with 0.25 λ
0.The utility model antenna measurement maximum gain is 6.7dBi, and traditional symmetrical dipole adds the theoretical maximum gain of metal floor, is 5.15dBi.
Although above-mentioned, by reference to the accompanying drawings embodiment of the present utility model is described; but the not restriction to the utility model protection range; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that performing creative labour can make or distortion still within protection range of the present utility model.
Claims (3)
1. a miniaturization directed radiation printed antenna, is characterized in that, this miniaturization directed radiation printed antenna comprises: feed conductive trace, twofold inverted L-shaped conductive trace, parasitic radiation unit, metal floor;
Twofold inverted L-shaped conductive trace lower end connects feed conductive trace, and parasitic radiation unit is arranged at space directly over twofold inverted L-shaped conductive trace, and metal floor is arranged on the back side of feed conductive trace.
2. miniaturization directed radiation printed antenna as claimed in claim 1, is characterized in that, twofold inverted L-shaped conductive trace adopts the external electromagnetic field incentive structure of two sections of long conductors that are parallel to each other.
3. miniaturization directed radiation printed antenna as claimed in claim 1, is characterized in that, parasitic radiation unit adopts long narrow linear pattern or bending type, be positioned over twofold inverted L-shaped conductive trace directly over.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320659731.8U CN203521601U (en) | 2013-10-24 | 2013-10-24 | Small-size directional radiation printed antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320659731.8U CN203521601U (en) | 2013-10-24 | 2013-10-24 | Small-size directional radiation printed antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203521601U true CN203521601U (en) | 2014-04-02 |
Family
ID=50380480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320659731.8U Expired - Fee Related CN203521601U (en) | 2013-10-24 | 2013-10-24 | Small-size directional radiation printed antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203521601U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107508034A (en) * | 2017-09-14 | 2017-12-22 | 深圳传音制造有限公司 | A kind of smart machine |
-
2013
- 2013-10-24 CN CN201320659731.8U patent/CN203521601U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107508034A (en) * | 2017-09-14 | 2017-12-22 | 深圳传音制造有限公司 | A kind of smart machine |
| CN107508034B (en) * | 2017-09-14 | 2024-05-17 | 深圳传音制造有限公司 | Intelligent equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20161024 |