CN201219132Y - Micro-strip aerial - Google Patents
Micro-strip aerial Download PDFInfo
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- CN201219132Y CN201219132Y CNU2008201269053U CN200820126905U CN201219132Y CN 201219132 Y CN201219132 Y CN 201219132Y CN U2008201269053 U CNU2008201269053 U CN U2008201269053U CN 200820126905 U CN200820126905 U CN 200820126905U CN 201219132 Y CN201219132 Y CN 201219132Y
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Abstract
A microstrip antenna comprises substrate, a first circuit and multiple radiation part. The first circuit is positioned at a first surface of the substrate and possesses a signal feed-in part; the multiple radiation parts are positioned at the first surface and parallel to each other. The radiation part comprises a second circuit, multiple first radiation units and at least a second radiation unit. The second circuit is positioned at the first surface and perpendicular to extension direction of the first circuit. The first radiation unit and the second radiation unit, facing to same direction, are separately connected with the second circuit in capacitance coupling style and direct feed-in style, and are in series-parallel connection with metal circuit in capacitance coupling style and direct feed-in style according to characteristics of radiation unit and circuit, thereby solving insufficiency problem of impedance bandwidth and field pattern frequency width, and increasing antenna benefit.
Description
Technical field
The utility model is about a kind of microstrip antenna, particularly a kind of microstrip antenna that connects with capacitive coupling.
Background technology
Along with the wireless telecommunications development of science and technology, various communication product and technology are also constantly weeded out the old and bring forth the new.Along with development of technology, make the volume of product also be inclined to compact.Whether the same antenna accepting or transmit of being used in communication product, its volume size product that also just concerning can reach compact.In every technology, the technology of microstrip antenna (microstrip antenna) has become of speed with fastest developing speed in the field of antenna.Microstrip antenna have volume little, in light weight, can be in conjunction with advantages such as other assembly and circuit.
General common microstrip antenna designs is divided into direct feed-in and two kinds of indirect feed-ins but power is coupled into the mode summary of antenna radiation unit.Typical directly feed-in uses coaxial line or signal transmssion line to connect metallic circuit and radiating element, so the position of the fundamental characteristics of antenna and load point has very big pass to be.And the indirect mode of feed-in under the prerequisite of not destroying the aerial radiation modular construction, can provide than large space with in conjunction with feed-in network and relevant microwave circuit.
Existing microstrip antenna must design in array (array) mode if need higher gain (gain), and needs between antenna array to interconnect with cabling.But for fear of size, antenna module (antenna element) number factor, antenna module can't connect with parallel way each other.Please refer to Fig. 1, Fig. 1 is existing microstrip antenna schematic diagram.Microstrip antenna 10 includes substrate 1, metallic circuit 2, signal feed-in part 3, a plurality of first radiating element 4 and a plurality of second radiating elements 5.Metallic circuit 2 is formed on the substrate 1, and signal feed-in part 3 is positioned on the metallic circuit 2.A plurality of first radiating elements 4 are connected in metallic circuit 2, and a plurality of second radiating elements 5 then are serially connected with first radiating element 4.When signal during via signal feed-in part 3 feed-ins, via metallic circuit 2 signal is passed to a plurality of first radiating elements 4, be passed to a plurality of second radiating elements 5 via a plurality of first radiating elements 4.Existing microstrip antenna 10 on substrate 1 in conjunction with a plurality of radiating elements of trying one's best, to strengthen the gain of microstrip antenna, therefore after when wiring, second radiating element 5 being serially connected with first radiating element 4, but in the time of can causing signal to transmit again like this, can just can be passed to second radiating element 5 via first radiating element 4 earlier, make the energy of second radiating element 5 lack, and make microstrip antenna 10 that the problem of an impedance frequency range deficiency and a shape frequency range deficiency be arranged because of compare first radiating element 4 via the consumption of first radiating element 4.
The utility model content
In view of above problem, the utility model provides a kind of microstrip antenna that can improve an existing impedance frequency range deficiency and a shape frequency range deficiency.
According to the disclosed microstrip antenna of the utility model, it includes substrate, first circuit and a plurality of Department of Radiation.Substrate has first surface.First circuit is positioned on the first surface, and has signal feed-in part on first circuit with feed-in one signal.A plurality of Departments of Radiation are positioned on the first surface, and are to be parallel to each other between a plurality of Department of Radiation.Wherein, each Department of Radiation includes second circuit, a plurality of first radiating element and at least one second radiating element.
Second circuit is positioned on the first surface of substrate, and second circuit is perpendicular to the bearing of trend of first circuit, and is connected first circuit in direct feed-in mode with the one kind of mode of capacitive coupling.A plurality of first radiating elements are to be connected in second circuit towards same direction and with capacitive coupling.At least one second radiating element and this first radiating element be towards same direction, and be connected in second circuit in direct feed-in mode.
Wherein, this first radiating element and respectively be formed with slotted eye on one of them at least in this second radiating element respectively.Slotted eye is in order to suppress the cross polarization of microstrip antenna radiation pattern.
According to the disclosed microstrip antenna of the utility model, wherein substrate has more second surface, and second surface is with respect to first surface.Microstrip antenna more includes base and holding wire.Base includes base plate and sidewall.Base plate is positioned at a side of the second surface of substrate, and supports formation one air height with double-screw bolt, to promote antenna efficiency.Base plate is the ground that connects of first surface microstrip antenna.Sidewall is to be arranged on the surface of base plate, and forms an angle with base plate.Sidewall is in order to suppress the secondary lobe and the front and back ratio of microstrip antenna radiation pattern.In this, the surface of base plate can be parallel to the second surface of substrate.
See through circuit and the mode feed-in of radiating element with capacitive coupling (capacitance coupling) nearer with respect to signal feed-in part on microstrip antenna according to the disclosed microstrip antenna of the utility model, its stiffness of coupling is different according to designing; Circuit far away then is connected in direct feed-in mode with radiating element.Make each radiating element can obtain more approaching power division, reach desirable antenna field shape, and, also can promote antenna efficiency (antenna efficiency) because track lengths significantly reduces.
Relevant characteristics and implementation of the present utility model cooperate diagram to be described in detail as follows as most preferred embodiment now.
Description of drawings
Fig. 1 is existing microstrip antenna schematic diagram;
Fig. 2 is the schematic diagram for the utility model first embodiment;
Fig. 3 is the schematic diagram for the utility model second embodiment;
Fig. 4 is the explosive view for the utility model the 3rd embodiment;
Fig. 5 is the schematic diagram for the utility model the 3rd embodiment;
Fig. 6 A is the vertical main pole measurement figure that utilizes the microstrip antenna test gained of the utility model first embodiment with frequency 3.3GHz;
Fig. 6 B is the vertical main pole measurement figure that utilizes the microstrip antenna test gained of the utility model first embodiment with frequency 3.4GHz;
Fig. 6 C is the vertical main pole measurement figure that utilizes the microstrip antenna test gained of the utility model first embodiment with frequency 3.5GHz;
Fig. 6 D is the vertical main pole measurement figure that utilizes the microstrip antenna test gained of the utility model first embodiment with frequency 3.6GHz;
Fig. 6 E is the vertical main pole measurement figure that utilizes the microstrip antenna test gained of the utility model first embodiment with frequency 3.7GHz;
Fig. 6 F is the vertical main pole measurement figure that utilizes the microstrip antenna test gained of the utility model first embodiment with frequency 3.8GHz;
Fig. 7 A is the vertical main pole measurement figure that utilizes the microstrip antenna test gained of the utility model second embodiment with frequency 3.3GHz;
Fig. 7 B is the vertical main pole measurement figure that utilizes the microstrip antenna test gained of the utility model second embodiment with frequency 3.4GHz;
Fig. 7 C is the vertical main pole measurement figure that utilizes the microstrip antenna test gained of the utility model second embodiment with frequency 3.5GHz;
Fig. 7 D is the vertical main pole measurement figure that utilizes the microstrip antenna test gained of the utility model second embodiment with frequency 3.6GHz;
Fig. 7 E is the vertical main pole measurement figure that utilizes the microstrip antenna test gained of the utility model second embodiment with frequency 3.7GHz;
Fig. 7 F is the vertical main pole measurement figure that utilizes the microstrip antenna test gained of the utility model second embodiment with frequency 3.8GHz;
Fig. 8 A is vertical plane maximum gain and the horizontal plane maximum gain table that utilizes the microstrip antenna test gained of the utility model first embodiment with frequency 3.3GHz ~ 3.7GHz;
Fig. 8 B is vertical plane maximum gain and the horizontal plane maximum gain table that utilizes the microstrip antenna test gained of the utility model second embodiment with frequency 3.3GHz ~ 3.7GHz.
Wherein, Reference numeral
1................. substrate
2................. metallic circuit
3................. signal feed-in part
4................. first radiating element
5................. second radiating element
10................ microstrip antenna
21................ substrate
21a............... first surface
21b............... second surface
22................ first circuit
23................ signal feed-in part
24................ Department of Radiation
25................ second circuit
26................ first radiating element
27................ second radiating element
28................ slotted eye
29................ base
29a............... base plate
29b............... sidewall
30................ holding wire
30a............... heart yearn
30b............... insulating barrier
30c............... ground plane
100............... microstrip antenna
Embodiment
Relevant characteristics and implementation of the present utility model cooperate graphic being described in detail as follows now.
Please refer to Fig. 2, Fig. 2 is the schematic diagram for the utility model first embodiment.In this embodiment, microstrip antenna 100 includes substrate 21, first circuit 22, signal feed-in part 23 and a plurality of Departments of Radiation 24.
Second circuit 25 is positioned on the first surface 21a, and perpendicular to the bearing of trend of first circuit 22.Second circuit 25 is to be connected in first circuit 22 with direct feed-in mode and the one kind of mode of capacitive coupling.A plurality of first radiating elements 26 are connected in second circuit 25 towards same direction and with capacitive coupling.First radiating element 26 in same Department of Radiation 24 is to be symmetry axis and symmetrically with first circuit 22.At least one second radiating element 27 is to be connected in second circuit 25 with first radiating element 26 towards same direction and in direct feed-in mode.Wherein, the array on the microstrip antenna 100 all in the same direction.In a plurality of second circuits 25 any two with a virtual symmetry axis 1 symmetrically, this symmetry axis 1 is with 23 vertical first circuits 22 of the signal feed-in part on first circuit 22 and is parallel to a plurality of second circuits 25.The shape of first radiating element 26 can be circular, oval, polygon (for example: hexagon, rhombus, rectangle etc.) or its analogous shape various geometries such as (for example: similar round, class ellipse, class hexagon, class rhombus, class rectangle etc.).The shape of second radiating element 27 can be circle, ellipse, polygon (for example: hexagon, rhombus, rectangle etc.) or its analogous shape various geometries such as (for example: similar round, class ellipse, class hexagon, class rhombus, class rectangle etc.).
Wherein, close together is to be connected in first circuit 22 with capacitive coupling in second circuit 25 of a plurality of Departments of Radiation 24 and between the signal feed-in part 23, and what distance was far away in second circuit 25 of a plurality of Departments of Radiation 24 and between the signal feed-in part 23 is to be connected in first circuit 22 in direct feed-in mode.First radiating element 26 in each Department of Radiation 24 and the distance of signal feed-in part 23 second radiating element 27 in the same Department of Radiation 24 and the close together of signal feed-in part 23.
In this embodiment, the shape of first radiating element 26 and second radiating element 27 is to be a class hexagon.Wherein, first radiating element 26 has the first relative drift angle of position and second drift angle respectively with second radiating element 27, and first drift angle is to be connected on second circuit 25, and second drift angle then is formed with a slotted eye 28.The shape of slotted eye 28 is for an end is connected in this second drift angle, and the other end is toward the class rectangle of first radiating element 26 or the extension of second radiating element, 27 centers.This slotted eye 28 can be in order to suppress the cross polarization of microstrip antenna 100 radiation patterns.According to the disclosed microstrip antenna 100 of the utility model, see through on the microstrip antenna 100 with respect to nearer second circuit 25 of the signal feed-in part on first circuit 22 23 and first radiating element 26 with capacity coupled mode feed-in; 27 of second circuit 25 far away and second radiating elements are connected in direct feed-in mode.Make win radiating element 26 and second radiating element 27 can obtain more approaching power division, reach desirable antenna field shape, and, also can promote antenna efficiency because track lengths significantly reduces.
Please refer to Fig. 3, Fig. 3 is the schematic diagram for the utility model second embodiment.Present embodiment is identical haply with the feature of first embodiment.In this embodiment, connecting first radiating element 26 of second circuit 25 of first circuit 22 and second radiating element 27 in direct feed-in mode is that first radiating element 26 and second radiating element 27 with second circuit 25 that is connected in first circuit 22 with capacitive coupling is towards rightabout.
In this embodiment, to be connected in the Department of Radiation 24 of first circuit 22 and be connected in the Department of Radiation of first circuit 22 towards rightabout in direct feed-in mode with capacitive coupling, even also the part array on the microstrip antenna 100 is put upside down and is put, and utilize phase of line (phase) to differ from 180 degree, make and to obtain maximum inter-module between the radiating element apart from (element spacing), and then lifting antenna gain, also because differ 180 degree, make vertical direction can have more symmetry, and the main lobe on E plane (main beam) can have better shape frequency range.
Please refer to Fig. 4 and Fig. 5.Fig. 4 is the explosive view for the utility model the 3rd embodiment.Fig. 5 is the schematic diagram for the utility model the 3rd embodiment.Present embodiment is identical haply with the feature of second embodiment.In this embodiment, wherein substrate 21 has more second surface 21b, and second surface 21b is with respect to first surface 21a.Microstrip antenna 100 more includes base 29 and holding wire 30.Base 29 is positioned at the side of the second surface 21b of substrate 21, and with double-screw bolt bed hedgehopping one air height.Base 29 can be metal material and makes, to be used as the grounding assembly of microstrip antenna 100.Holding wire 30 is in order to transmit signal.
In this embodiment, utilize base plate 29a reflected radiation portion 24 the signals that direction gave off towards second surface 21b, the backward radiation reflection that is about to microstrip antenna 100 concentrates on the direction of forward radiation, with ratio before and after improving.Simultaneously, sidewall 29b has the effect of the secondary lobe of the radiation pattern that can suppress microstrip antenna 100.
Holding wire 30 comprises heart yearn 30a, insulating barrier 30b and ground plane 30c.Heart yearn 30a is electrically connected at signal feed-in part 23, to transmit signal by heart yearn 30a, is about to signal output/input signal feeding portion 23.Insulating barrier 30b is coated on the heart yearn 30a, and ground plane 30c coated insulation layer 30b is with by insulating barrier 30b electrical isolation heart yearn 30a and ground plane 30c.Ground plane 30c is electrically connected at base 29, uses the signal ground as this microstrip antenna 100.
With reference to Fig. 6 A, Fig. 6 B, Fig. 6 C, Fig. 6 D, Fig. 6 E and Fig. 6 F.Fig. 6 A utilizes the vertical plane main poleization (co-polarization) of the microstrip antenna test gained of the utility model first embodiment to measure figure with frequency 3.3GHz.Fig. 6 B is the vertical plane main pole measurement figure that utilizes the microstrip antenna test gained of the utility model first embodiment with frequency 3.4GHz.Fig. 6 C is the vertical plane main pole measurement figure that utilizes the microstrip antenna test gained of the utility model first embodiment with frequency 3.5GHz.Fig. 6 D is the vertical plane main pole measurement figure that utilizes the microstrip antenna test gained of the utility model first embodiment with frequency 3.6GHz.Fig. 6 E is the vertical plane main pole measurement figure that utilizes the microstrip antenna test gained of the utility model first embodiment with frequency 3.7GHz.Fig. 6 F is the vertical plane main pole measurement figure that utilizes the microstrip antenna test gained of the utility model first embodiment with frequency 3.8GHz.The microstrip antenna that utilizes the utility model first embodiment as can be seen is when frequency 3.3GHz to 3.8GHz, and its vertical plane main pole gain can meet the TS2 standard that the ETSI of European Telecommunication Standard mechanism (European Telecommunication StandardsInstitute) is defined.
With reference to Fig. 7 A, Fig. 7 B, Fig. 7 C, Fig. 7 D, Fig. 7 E and Fig. 7 F.Fig. 7 A utilizes the vertical plane main poleization (co-polarization) of the microstrip antenna test gained of the utility model second embodiment to measure figure with frequency 3.3GHz.Fig. 7 B is the vertical plane main pole measurement figure that utilizes the microstrip antenna test gained of the utility model second embodiment with frequency 3.4GHz.Fig. 7 C is the vertical plane main pole measurement figure that utilizes the microstrip antenna test gained of the utility model second embodiment with frequency 3.5GHz.Fig. 7 D is the vertical plane main pole measurement figure that utilizes the microstrip antenna test gained of the utility model second embodiment with frequency 3.6GHz.Fig. 7 E is the vertical plane main pole measurement figure that utilizes the microstrip antenna test gained of the utility model second embodiment with frequency 3.7GHz.Fig. 7 F is the vertical plane main pole measurement figure that utilizes the microstrip antenna test gained of the utility model second embodiment with frequency 3.8GHz.
Compare the microstrip antenna of the utility model first embodiment, the microstrip antenna that utilizes the utility model second embodiment as can be seen is when frequency 3.3GHz to 3.8GHz, and its vertical plane main pole gain then can obviously be reduced to and meet the defined TS2 standard of ETSI.
With reference to Fig. 8 A, Fig. 8 B.Fig. 8 A is vertical plane maximum gain and the horizontal plane maximum gain table that utilizes the microstrip antenna test gained of the utility model first embodiment with frequency 3.3GHz ~ 3.7GHz.Fig. 8 B is perpendicular polarization maximum gain and the horizontal polarization maximum gain table that utilizes the microstrip antenna test gained of the utility model second embodiment with frequency 3.3GHz ~ 3.7GHz.
Certainly; the utility model also can have other various embodiments; under the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the utility model.
Claims (17)
1. a microstrip antenna is characterized in that, comprises:
One substrate has a first surface;
One first circuit is positioned on this first surface, and this first circuit has a signal feed-in part, with feed-in one signal;
A plurality of Departments of Radiation are being parallel to each other on this first surface and between a plurality of this Department of Radiation, and each this Department of Radiation comprises:
One second circuit is positioned on this first surface, is connected this first circuit perpendicular to the bearing of trend of this first circuit and in direct feed-in mode with the one kind of mode of capacitive coupling;
A plurality of first radiating elements are connected in this second circuit towards same direction and with capacitive coupling;
At least one second radiating element is connected in this second circuit with this first radiating element towards same direction and in direct feed-in mode.
2. microstrip antenna according to claim 1, it is characterized in that, wherein this second circuit of close together is to be connected in this first circuit with capacitive coupling in this of this Department of Radiation second circuit and between this signal feed-in part, in this of this Department of Radiation second circuit and this second circuit that distance is far away between this signal feed-in part be to be connected in this first circuit in direct feed-in mode.
3. microstrip antenna according to claim 1 is characterized in that, wherein in this Department of Radiation respectively, the distance of this first radiating element and this signal feed-in part is compared to the close together of this second radiating element and this signal feed-in part.
4. microstrip antenna according to claim 1 is characterized in that, wherein respectively is formed with a slotted eye on this first radiating element, and this slotted eye is in order to suppress the cross polarization of this microstrip antenna radiation pattern.
5. microstrip antenna according to claim 4 is characterized in that, wherein this slotted eye is to be positioned at the relative other end that this first radiating element connects this second circuit.
6. microstrip antenna according to claim 1 is characterized in that, wherein respectively is formed with a slotted eye on this second radiating element, and this slotted eye is in order to suppress the cross polarization of this microstrip antenna radiation pattern.
7. microstrip antenna according to claim 6 is characterized in that, wherein this slotted eye is to be positioned at the relative other end that first radiating element connects this second circuit.
8. microstrip antenna according to claim 1, it is characterized in that wherein this first radiating element that connects this second circuit of this first circuit in this direct feed-in mode is that this first radiating element with this second circuit that is connected in this first circuit with this capacitive coupling is towards same direction.
9. microstrip antenna according to claim 1, it is characterized in that wherein this first radiating element that connects this second circuit of this first circuit in this direct feed-in mode is that this first radiating element with this second circuit that is connected in this first circuit with this capacitive coupling is towards rightabout.
10. microstrip antenna according to claim 1 is characterized in that wherein this substrate has more a second surface, with respect to this first surface; And this microstrip antenna more comprises a base, is positioned at a side of this second surface of this substrate, and this base is in order to be used as grounding assembly.
11. microstrip antenna according to claim 10 is characterized in that, wherein this base comprises:
One base plate is positioned at a side of this second surface of this substrate, to reflect the signal that direction given off of this Department of Radiation towards this second surface;
One sidewall, a surface that is arranged at this base plate upward and with this base plate forms an angle, to suppress the secondary lobe of this microstrip antenna radiation pattern.
12. microstrip antenna according to claim 11 is characterized in that, wherein this surface of this base plate is parallel to this second surface of this substrate.
13. microstrip antenna according to claim 10 is characterized in that, more comprises a holding wire, this holding wire comprises:
One heart yearn electrically connects this signal feed-in part, to transmit this signal;
One insulating barrier coats this heart yearn;
One ground plane coats this insulating barrier, is electrically connected at this base to be used as signal ground.
14. microstrip antenna according to claim 1 is characterized in that, wherein the shape of this first radiating element is at least a in circular, ellipse, polygon and its analogous shape.
15. microstrip antenna according to claim 1 is characterized in that, wherein the shape of this second radiating element is at least a in circular, ellipse, polygon and its analogous shape.
16. microstrip antenna according to claim 1 is characterized in that, wherein this first radiating element in same this Department of Radiation is to be symmetry axis and symmetrically with this first circuit.
17. microstrip antenna according to claim 1 is characterized in that, wherein two in this second circuit with a symmetry axis of the bearing of trend by this signal feed-in part and parallel this second circuit symmetrically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201269053U CN201219132Y (en) | 2008-06-17 | 2008-06-17 | Micro-strip aerial |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201269053U CN201219132Y (en) | 2008-06-17 | 2008-06-17 | Micro-strip aerial |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201219132Y true CN201219132Y (en) | 2009-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201269053U Expired - Fee Related CN201219132Y (en) | 2008-06-17 | 2008-06-17 | Micro-strip aerial |
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| Country | Link |
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| CN (1) | CN201219132Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107978842A (en) * | 2017-11-24 | 2018-05-01 | 深圳市盛路物联通讯技术有限公司 | Microstrip antenna |
-
2008
- 2008-06-17 CN CNU2008201269053U patent/CN201219132Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107978842A (en) * | 2017-11-24 | 2018-05-01 | 深圳市盛路物联通讯技术有限公司 | Microstrip antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090408 Termination date: 20100617 |