CN107743739B - Small sized double frequency circular polarization microstrip antenna - Google Patents
Small sized double frequency circular polarization microstrip antenna Download PDFInfo
- Publication number
- CN107743739B CN107743739B CN200810074657.7A CN200810074657A CN107743739B CN 107743739 B CN107743739 B CN 107743739B CN 200810074657 A CN200810074657 A CN 200810074657A CN 107743739 B CN107743739 B CN 107743739B
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- metal base
- paster
- base plate
- lower floor
- distributing point
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Abstract
The invention discloses a kind of small sized double frequency circular polarization microstrip antenna, including：One metal base plate, one layer dielectric substrate for being located at metal base plate, one lower floor's paster on layer dielectric substrate, one upper layer medium substrate on lower floor's paster, an and upper strata paster in upper layer medium substrate, distributing point is provided with lower floor's paster, the distributing point is located on antenna horizontal axis and positioned at the side of antennas orthogonal axis, another distributing point is provided with the paster of upper strata, another distributing point is located on antennas orthogonal axis and positioned at the side of antenna horizontal axis, metal base is provided with the lower section of the metal base plate and the metal base plate is placed on metal base, the size of the metal base is more than or equal to metal base plate.Compared with prior art, inventive antenna has hemispherical radiation diagram, good standing-wave ratio, axle ratio, small size, low quality and low section, and has the premium properties such as good axial ratio bandwidth.
Description
Technical field
The present invention relates to a kind of small sized double frequency circular polarization microstrip antenna, for airboarne receiver, receiver, spaceborne reception
The receiving device of the diversified forms such as machine, receiver on-board, hand receiver.
Background technology
At present, global position system, satellite communication system have been obtained for very extensive application.Usually require that satellite fix
The antenna of receiving communication device has a hemispherical radiation diagram in system, satellite communication system, good standing-wave ratio, axle ratio and
Low section, and required with good axial ratio bandwidth etc..Although having a variety of practical various antennas, can apply to
These technical fields, including helical antenna, oscillator and micro-strip combined antenna and 90 degree of phase shift work(of use divide feeding network
Microstrip antenna etc., particularly double frequency round polarized microstrip antenna, the antenna has actually used at present, while has declared state
Anti- patent, number of patent application 200610120726.4.
However, helical antenna, oscillator and micro-strip combined antenna volume are big, backward radiation is big, therefore is brought in use a lot
Inconvenience, especially it is not applied for the flight systems such as receiver, airboarne receiver.And use what 90 degree of phase shifts were fed
Microstrip antenna needs additionally 90 degree of phase shift power splitters of increase, and designs the combination of intermediate-frequeney point, dielectric permittivity by very
Big limitation, and performance is also poor, and cost is higher.
Double frequency round polarized microstrip antenna typically has large-size, and cost is higher, while its axle is poor.
The content of the invention
The present invention provides a kind of small capacity double for the axle ratio characteristic and gain characteristic that can improve two working frequency points of antenna
Frequency circular polarization microstrip antenna, the present invention can be widely applied for airboarne receiver, receiver, receiver on-board, hand-held connect
The antenna of the receiving device of the diversified forms such as receipts machine.
The present invention adopts the following technical scheme that：
A kind of small sized double frequency circular polarization microstrip antenna, including：
One metal base plate,
One layer dielectric substrate for being located at metal base plate,
One lower floor's paster on layer dielectric substrate,
One upper layer medium substrate on lower floor's paster,
And a upper strata paster in upper layer medium substrate,
Distributing point is provided with lower floor's paster, the distributing point is located on antenna horizontal axis and positioned at the one of antennas orthogonal axis
Side, is provided with another distributing point on the paster of upper strata, and another distributing point is located on antennas orthogonal axis and is located at antenna trunnion axis
The side of line, it is provided with metal base in the lower section of the metal base plate and the metal base plate is placed on metal base, institute
The size for stating metal base is more than or equal to metal base plate.
The present invention an optimized technology be：Cavity is provided with metal base.
Compared with prior art, the invention has the advantages that：
The present invention is that one kind is based on satellite fix, satellite communication system, can be widely applied for airboarne receiver, missile-borne reception
The antenna of the receiving device of the diversified forms such as machine, receiver on-board, hand receiver.The antenna has hemispherical radiation diagram,
Good standing-wave ratio, axle ratio, small size, low quality and low section, and with premium properties such as good axial ratio bandwidths.
The size of the present invention typically only has a quarter of double frequency round polarized microstrip antenna, even more small, therefore using big on material
It is big to save, simultaneously because volume is more compact, quality is smaller, therefore it is more suitable for airborne, missile-borne, spaceborne and individual movement
In receiver, certainly for it is vehicle-mounted, carrier-borne also for facility.
Metal base, the use of the metal base equal to metal base plate is especially dimensionally larger than, improves two works of antenna
Make axle ratio characteristic, the gain characteristic of frequency.And be a cavity inside metal base, the quality of antenna on the one hand can be reduced,
Radio circuit, such as LNA circuit and power amplifier can be placed simultaneously.
Lower floor's paster is a dead square, corresponding to one of two drift angles of diagonal be cut out two isosceles triangles,
Lower floor's paster drift angle can be cut off according to the one of diagonal of circular polarisation set direction.Upper strata paster is also for surely just
It is square, corresponding to one of two drift angles of diagonal be cut out two isosceles triangles, can be selected according to circular polarisation direction
Select one of diagonal excision upper strata paster drift angle.Top dielectric plate and layer dielectric plate dielectric constant can phases
Together, can also be different.Two frequency bins contribute to receive, then general layer dielectric and lower floor's paster correspond to relatively low frequency,
And top dielectric and upper strata paster correspond to higher frequency；If it is to receive frequency to have one in two frequency bins, one is hair
Radio frequency point, then top dielectric and upper strata paster are corresponded to launching frequency, and layer dielectric and lower floor's paster correspond to reception frequency
Point, effectively to realize the isolation for launching frequency signal.Two coaxial fittings, respectively positioned at antennas orthogonal and level
On two axis, and different coaxial line core diameters can be selected as needed, to realize optimal impedance matching, wherein one
Individual joint is connected through metal base, metal base plate and layer dielectric with lower floor paster, and a joint passes through metal base, gold
Belong to bottom plate, layer dielectric, lower floor's paster and top dielectric, be connected with upper strata paster.The antenna volume is compact, and section is low,
Quality is small, has hemispherical radiation directional diagram, is mainly used in satellite fix reception system and satellite communication system.
Brief description of the drawings
After following detailed description is read in conjunction with the figure, above-mentioned purpose of the invention, further feature and advantage can all become apparent from,
Wherein：
Fig. 1 be the present invention structural representation, wherein, Figure 1A be the present invention structural front view, Tu1BShi
Upper strata paster top view, Fig. 1 C are lower floor's paster top views, and Fig. 1 D are metal base plate top views, and Fig. 1 E are metals
The top view of pedestal；
Fig. 2 shows that the relation received in the small sized double frequency circular polarization microstrip antenna according to the present invention between frequency range and return loss is bent
Line chart；
Fig. 3 shows that the relation launched in the small sized double frequency circular polarization microstrip antenna according to the present invention between frequency range and return loss is bent
Line chart；
Fig. 4 shows that the relation in the small sized double frequency circular polarization microstrip antenna according to the present invention between two-port isolation and frequency is bent
Line chart；
Fig. 5 shows that the relation received in the small sized double frequency circular polarization microstrip antenna according to the present invention between band gain and the elevation angle is bent
Line chart, different curves corresponds to different orientations in figure, and azimuth is respectively 0 degree, 10 degree, 20 degree ..., 360 degree；
Fig. 6, which is shown, receives frequency range axle than the relation song between the elevation angle in the small sized double frequency circular polarization microstrip antenna according to the present invention
Line chart, different curves corresponds to different orientations in figure, and azimuth is respectively 0 degree, 10 degree, 20 degree ..., 360 degree；
Fig. 7 shows that the relation launched in the small sized double frequency circular polarization microstrip antenna according to the present invention between band gain and the elevation angle is bent
Line chart, different curves corresponds to different orientations in figure, and azimuth is respectively 0 degree, 10 degree, 20 degree ..., 360 degree；
Fig. 8, which is shown, launches frequency range axle than the relation song between the elevation angle in the small sized double frequency circular polarization microstrip antenna according to the present invention
Line chart, different curves corresponds to different orientations in figure, and azimuth is respectively 0 degree, 10 degree, 20 degree ..., 360 degree；
Embodiment
A kind of small sized double frequency circular polarization microstrip antenna, including：One metal base plate 5, a lower floor for being located at metal base plate 5
Medium substrate 4, lower floor's paster 3 on layer dielectric substrate 4, a upper strata on lower floor's paster 3 are situated between
Matter substrate 2, and a upper strata paster 1 in upper layer medium substrate 2, are provided with distributing point 11 on lower floor's paster 3,
The distributing point 11 is located on antenna horizontal axis and positioned at the side of antennas orthogonal axis, is provided with upper strata paster 1 another
Distributing point 9, another distributing point 9 are located on antennas orthogonal axis and positioned at the side of antenna horizontal axis, in the metal
The lower section of bottom plate 5 is provided with metal base 14 and the metal base plate 5 is placed on metal base 14, the metal base
14 size is more than or equal to metal base plate 5.Cavity 15 is provided with metal base 14.
In the present embodiment, metal base 14, metal base plate 5, layer dielectric substrate 4, upper layer medium substrate 2 are circle
Shape, or, metal base 14, metal base plate 5, layer dielectric substrate 4 and upper layer medium substrate 2 are square, under
Layer paster 3 the common bottom for being shaped as mutually splicing and with symmetrical two isosceles trapezoids in bottom, the waist and waist of two isosceles trapezoids
Extended line form square, the shape of upper strata paster 1 also for the common bottom mutually spliced and with symmetrical two isosceles trapezoids in bottom,
The waist of two isosceles trapezoids and the extended line of waist form square.
The detailed content of a preferred embodiment of the present invention is participated in below, and embodiment is described with reference to the drawings.Possible
In the case of, represent same or analogous part for all accompanying drawings and the same label of explanation.The embodiment is the Chinese Big Dipper one
For the small sized double frequency microstrip antenna used in location receiver, it has special representative's property, because it has a two frequency bins, one
Individual is tranmitting frequency, and one is receives frequency, therefore not only needs to consider the wideband microstrips such as two frequency bins, circular polarisation in designing
The problem of antenna will consider, it is also necessary to consider the isolating problem of receiving port and emission port.In addition the receiver of the type is not
Only need normally to receive satellite-signal, and also need to transmission signal, realize the two-way communication with satellite.Therefore represent
The feature of receiver antenna, also represent the feature of receiver antenna in global position system in satellite communication system.Using
The antenna of the present invention can be conveniently applied in other satellite communication receivers, can also be conveniently used for other alignment systems
In, in such as a variety of position receiver equipment of Beidou II location receiver, GPS location receiver, Jia Lilve location receivers.
Present patent application obtains the subsidy of innovation colony of state natural sciences fund committee fund 60621002.
Fig. 1 shows the side view and upper strata paster, lower floor's paster, metal bottom according to double frequency round polarized microstrip antenna of the present invention
The top view of plate and metal base.One of metal base plate is located on metal base 14, while is inside metal base
Individual cavity 15, it can be used for placing the circuit such as LNA and power amplifier；One medium substrate is located on metal base plate 5, is lower floor
Medium substrate 4；One paster is located on layer dielectric substrate 4, is lower floor's paster 3；One medium substrate is located at lower floor's patch
It is upper layer medium substrate 2 on piece 3；One paster is located in upper layer medium substrate 2, is upper strata paster 1.Metal base
14th, metal base plate 5, layer dielectric substrate 4, upper layer medium substrate 2 are square, and layer dielectric substrate 4 and upper
The layer size of medium substrate 2 is identical, and metal base plate size 5 is identical with layer dielectric substrate, and metal base 14 has suitable
Height and the length of side, to improve the axle ratio of two working frequency points of antenna and gain characteristic.Lower floor's paster 3 is a dead square,
Corresponding to one of two drift angles of diagonal be cut out two isosceles triangles 10, can according to circular polarisation set direction its
In diagonal excision lower floor paster drift angle.Upper strata paster 1 is also a dead square, corresponding to one of diagonal
Two drift angles in direction are cut out two isosceles triangles 8, can be according to the one of diagonal side of circular polarisation set direction
To excision upper strata paster drift angle.Top dielectric plate 2 and the dielectric constant of layer dielectric plate 4 can be with identical, can also be different.Two
Individual coaxial feed joint 6 and 7, respectively on antennas orthogonal and two horizontal axis, and it can select as needed
Different coaxial line core diameters, to realize optimal impedance matching, one of joint 6 passes through metal base 14, metal base plate
5 and layer dielectric 4 be connected with lower floor paster 3, a joint through metal base 14, metal base plate 5, layer dielectric 4,
Lower floor's paster 3 and top dielectric 2, are connected with upper strata paster 1.
In this embodiment, it 14 is aluminium alloy that metal base, which is, and long and width all be 54mm, is highly 15mm, inside sky
The length and width of chamber cavity 15 are all 50mm, high-order 12mm；Metal base plate 5 is copper foil, and thickness 18um, length and width are all
50mm；The dielectric constant of layer dielectric substrate 4 is 2.55, thickness 1mm, and long and width is all 50mm；Lower floor's paster 3
For copper foil, thickness 18um, long and a width of 31.5mm, the length of side of corner cut right angle equilateral triangle 10 is 2.15mm；Upper strata
The dielectric constant of medium substrate 2 is 9.8, is spent for 2.5mm, it is long and it is wide be all that 50mm upper stratas paster 1 is copper foil, thickness
18um, long and a width of 28.3mm, the length of side of corner cut right angle equilateral triangle 8 is 2.35mm；Coaxial feeder 7 is located at
The downward 4.2mm of antennas orthogonal center line, coaxial core diameter radius are 0.7mm, coaxial feeder 6 be antenna horizontal center line to
Right 7.0mm, coaxial core diameter radius are 0.7mm.Accordingly on metal base plate 5, layer dielectric 4, lower floor's paster 3, upper strata
Perforate is wanted on medium 2, upper strata paster 1, to realize feed, such as hole 12, hole 13, wherein in layer dielectric and top dielectric
On hole is not marked.The corresponding working frequency of the antenna upper strata radiation patch 2 is 1.616GHz, and the frequency is launching frequency,
Left-hand circular polarization；The corresponding working frequency of lower floor's radiation patch 4 is 2.492GHz, corresponding to receive frequency, right-handed circular polarization.Its
Working characteristics is respectively as shown in Fig. 2 to Fig. 8.
Although the present invention has been described and illustrated herein with reference to the preferred embodiments thereof, come for those skilled in the art
Say, the present invention there can be various modifications and variations.Various changes, the change of the present invention, and equivalent have appended right will
The content of book is asked to cover.
Claims (3)
1. a kind of small sized double frequency circular polarization microstrip antenna, including：
One metal base plate (5),
One layer dielectric substrate (4) on metal base plate (5),
One lower floor's paster (3) on layer dielectric substrate (4),
One upper layer medium substrate (2) on lower floor's paster (3),
And a upper strata paster (1) in upper layer medium substrate (2),
Distributing point (11) is provided with lower floor's paster (3), the distributing point (11) is located on antenna horizontal axis
And positioned at the side of antennas orthogonal axis, another distributing point (9) is provided with upper strata paster (1), this is another
Distributing point (9) is located on antennas orthogonal axis and is located at the side of antenna horizontal axis,
It is characterized in that：
Metal base (14) is provided with the lower section of the metal base plate (5) and the metal base plate (5) is put
To put on metal base (14), the size of the metal base (14) is more than or equal to metal base plate (5),
Internal cavities cavity (15) is provided with the metal base (14), metal base (14) be aluminium alloy, grow with
Width is all 54mm, is highly 15mm, and internal cavities cavity (15) length and width are all 50mm, a height of 12mm.
2. small sized double frequency circular polarization microstrip antenna according to claim 1, it is characterised in that metal base
(14), metal base plate (5), layer dielectric substrate (4), upper layer medium substrate (2) are circle.
3. small sized double frequency circular polarization microstrip antenna according to claim 1, it is characterised in that metal base
(14), metal base plate (5), layer dielectric substrate (4) and upper layer medium substrate (2) are square,
The common bottom for being shaped as mutually splicing of lower floor's paster (3) and with symmetrical two isosceles trapezoids in bottom, this two etc.
The extended line of the trapezoidal waist of waist and waist forms square, and the shape of upper strata paster (1) is also total to for what is mutually spliced
Bottom and with symmetrical two isosceles trapezoids in bottom, the waist of two isosceles trapezoids and the extended line of waist are square under forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810074657.7A CN107743739B (en) | 2008-02-05 | 2008-02-05 | Small sized double frequency circular polarization microstrip antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810074657.7A CN107743739B (en) | 2008-02-05 | 2008-02-05 | Small sized double frequency circular polarization microstrip antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107743739B true CN107743739B (en) | 2012-07-25 |
Family
ID=61224608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810074657.7A Expired - Fee Related CN107743739B (en) | 2008-02-05 | 2008-02-05 | Small sized double frequency circular polarization microstrip antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107743739B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108598693A (en) * | 2018-04-09 | 2018-09-28 | 重庆邮电大学 | Impedance easily matched broadband circle polarized UHF RFID readers antenna |
| CN110212290A (en) * | 2019-06-29 | 2019-09-06 | 深圳市朗赛微波通信有限公司 | A kind of Beidou buoy antenna improving low elevation gain |
-
2008
- 2008-02-05 CN CN200810074657.7A patent/CN107743739B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108598693A (en) * | 2018-04-09 | 2018-09-28 | 重庆邮电大学 | Impedance easily matched broadband circle polarized UHF RFID readers antenna |
| CN110212290A (en) * | 2019-06-29 | 2019-09-06 | 深圳市朗赛微波通信有限公司 | A kind of Beidou buoy antenna improving low elevation gain |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR03 | Grant of secret patent right | ||
| DC01 | Secret patent status has been lifted | ||
| DC01 | Secret patent status has been lifted | ||
| DD01 | Delivery of document by public notice |
Addressee: Zhu Xianguo Document name: Notice of conformity |
|
| DD01 | Delivery of document by public notice | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20210205 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |