CN206098694U - Microstrip array antenna - Google Patents
Microstrip array antenna Download PDFInfo
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- CN206098694U CN206098694U CN201621057854.4U CN201621057854U CN206098694U CN 206098694 U CN206098694 U CN 206098694U CN 201621057854 U CN201621057854 U CN 201621057854U CN 206098694 U CN206098694 U CN 206098694U
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Abstract
The utility model relates to a microstrip array antenna compares the defect of having solved microstrip array antenna and being difficult to miniaturization, high -gain, low secondary lobe with prior art. The utility model discloses a medium base plate is circular, medium base plate upper surface is equipped with 52 microstrip antenna units, 52 quarter wavelength conversion section has all been met on the individual microstrip antenna unit, 52 individual microstrip antenna unit is arranged based on eight horizontal sequences of Y axle direction share of medium base plate on the medium base plate, the quarter wavelength conversion section of microstrip antenna unit all connects through the three -wavelength transmission line of quartering in every horizontal sequence, first horizontal sequence and the 8th horizontal sequence are 4 microstrip antenna units, horizontal sequence of second and the 7th horizontal sequence are 6 microstrip antenna units, the horizontal sequence of third, the horizontal sequence of fourth, the 5th horizontal sequence and the 6th horizontal sequence are 8 microstrip antenna units. The utility model discloses it is long -pending to have reduced antenna body, obtains great gain, lower secondary lobe simultaneously.
Description
Technical field
This utility model is related to microstrip antenna technical field, specifically a kind of micro-strip array antenna.
Background technology
The characteristics of microstrip antenna has lightweight, small volume, thin profile and is easy to group battle array, compared with reflector antenna and loudspeaker day
Line, it is easier to meet the design requirement of array antenna, and low cost of manufacture, thus be used widely in every field.It is real
According to different application scenarios in the application of border, need antenna that there is the microstrip elements such as highly directive, high-gain and Sidelobe to tie
Structure is difficult to meet application requirement, and this is accomplished by using microband antenna unit group battle array meeting highly directive, high-gain, Sidelobe
Application requirement.
In prior art, the frame mode of common micro-strip array antenna as shown in figure 1, it is main by medium substrate, earth plate,
Some radiating elements, waveguide-microstrip transitions connecting portion and metal waveguide part composition.Radiating element（Microband antenna unit）
Level（X-axis）With it is vertical（Y-axis）Two-dimensional direction on it is evenly distributed, radiating element number is kept not on two-dimensional direction in length and breadth
Become, radiating element integrally lines up rectangular shape.Waveguide-microstrip transitions connecting portion has relative A faces and a B faces, and A faces with
B faces are electrically connected by some through holes.
In the case where keeping aerial radiation directional characteristic index constant, Miniaturization Design is if desired carried out, reduce micro-strip
The planar dimension of array antenna, this kind of microstrip array would become hard to meet and require, can only be by the way of antenna performance index is sacrificed
To obtain miniaturization.Therefore how to realize that micro-strip array antenna miniaturization, high-gain, Sidelobe have become the skill for being badly in need of solving
Art problem.
Utility model content
The purpose of this utility model is to be difficult to miniaturization, high-gain, low to solve micro-strip array antenna in prior art
The defect of secondary lobe, there is provided a kind of micro-strip array antenna is solving the above problems.
To achieve these goals, the technical solution of the utility model is as follows：
A kind of micro-strip array antenna, including medium substrate and the conductive earth plate installed in medium substrate lower surface,
Described medium substrate is circle, and medium substrate upper surface is provided with 52 microband antenna units, 52 microstrip antennas
Quarter-wave transforming section be connected on unit, the Y-axis of 52 microband antenna units on medium substrate based on medium substrate
Direction is divided into eight horizontal sequence arrangements, and in each horizontal sequence, the quarter-wave transforming section of microband antenna unit passes through
3/4ths wavelength transmission lines connect, and the first horizontal sequence and the 8th horizontal sequence are 4 microband antenna units, and second is horizontal
Sequence and the 7th horizontal sequence are 6 microband antenna units, the 3rd horizontal sequence, the 4th horizontal sequence, the 5th horizontal sequence
8 microband antenna units are with the 6th horizontal sequence；
3/4ths wavelength transmission line central spots of eight horizontal sequences are serially connected with main quarter-wave impedance and become
Parallel operation, eight main quarter wavelength impedance transducers concatenate to form feeding network by main transmission line, and waveguide-coaxial back of the body feedback connects
Head is arranged on the center of main transmission line.
Described waveguide-coaxial back of the body feedback joint includes standard waveguide, and standard waveguide is embedded with L-type coaxial probe, and L-type is coaxial
The side at standard waveguide broadside place is connected to after probe half guide wavelength of embedded standard waveguide.
The quarter-wave conversion of the quarter-wave transforming section and the 8th horizontal sequence of the first horizontal sequence
The exciting current Amplitude Ratio order of section is 0.5096:1:1:0.5096, the quarter-wave of the second horizontal sequence becomes
The exciting current Amplitude Ratio order for changing the quarter-wave transforming section of section and the 7th horizontal sequence is 0.4447:0.7224:
1:1:0.7224:0.4447, the quarter-wave transforming section of the 3rd horizontal sequence, a quarter of the 4th horizontal sequence
Quarter-wave conversion in wavelength conversion section, the quarter-wave transforming section and the 6th horizontal sequence of the 5th horizontal sequence
The exciting current Amplitude Ratio order of section is 0.4235:0.5937:0.8317:1:1:0.8317:0.5937:0.4235.
On described main transmission line, the exciting current Amplitude Ratio order of eight main quarter wavelength impedance transducers is
0.4235:0.5937:0.8317:1:1:0.8317:0.5937:0.4235。
The thickness of described medium substrate is 10mil, dielectric constant is that 2.94, loss tangent angle δ is 0.0012.
A diameter of 50mm of the medium substrate.
Spacing between 52 described microband antenna units is a guide wavelength.
The broadside of described standard waveguide is 5.69mm, narrow side is 2.845mm.
Beneficial effect
A kind of micro-strip array antenna of the present utility model, reduces antenna volume compared with prior art, at the same obtain compared with
Big gain, relatively low secondary lobe.This utility model is realized presenting micro-strip array antenna center using waveguide-coaxial back of the body feedback joint
Electricity, can solve antenna product as physical dimension limits the difficult problem that conventional waveguide feed method installation accuracy has high demands.Meanwhile,
Excited current distribution is calculated based on Taylor's synthetic method to design the arrangement group battle array that carries out of microband antenna unit, antenna is reduced
Minor level, has the advantages that high-gain, minor level are low, easy of integration.
Description of the drawings
Fig. 1 is the structural representation of micro-strip array antenna in prior art；
Fig. 2 is structure top view of the present utility model；
Fig. 3 is the mounting structure figure of medium substrate and conductive earth plate in this utility model；
Fig. 4 is the structural side view of waveguide-coaxial back of the body feedback joint in this utility model；
Fig. 5 is micro-strip array antenna gain simulation result schematic diagram described in the utility model；
Wherein, 1- medium substrates, 2- microband antenna units, 3- conductive earth plates, 4- quarter-wave transforming sections, 5- tetra-
The main quarter wavelength impedance transducer of/tri- wavelength transmission lines, 6-, 7- main transmission lines, 8- waveguides-coaxial back of the body feedback joint, 9-
Standard waveguide, 10-L type coaxial probes.
Specific embodiment
To make to have a better understanding and awareness architectural feature of the present utility model and the effect reached, to compared with
Good embodiment and accompanying drawing coordinate detailed description, are described as follows：
As shown in figure 3, a kind of micro-strip array antenna described in the utility model, including medium substrate 1 and it is arranged on medium
The conductive earth plate 3 of 1 lower surface of substrate.As shown in Fig. 2 medium substrate 1 is circle, the thickness of medium substrate 1 is 10mil, is situated between
It is 0.0012 that electric constant is 2.94, loss tangent angle δ.It is micro- that 1 upper surface of medium substrate is provided with 52 microband antenna units 2,52
Quarter-wave transforming section 4 is connected on band antenna element 2, medium substrate 1 is adopted for circular design so that the face of antenna
Product reduces.A diameter of 50mm of a diameter of 50mm of medium substrate 1, i.e. antenna.
52 microband antenna units 2 are divided into eight horizontal sequences based on the Y direction of medium substrate 1 on medium substrate 1
Arrangement, the Y direction based on medium substrate 1（The descending or ascending order of Y-axis）, 52 microband antenna units 2 are divided into eight
Horizontal sequence.Wherein, the first horizontal sequence is 4 as 2 quantity of microband antenna unit of the 8th horizontal sequence, and second
Laterally sequence is 6 as 2 quantity of microband antenna unit of the 7th horizontal sequence, the 3rd horizontal sequence, the 4th horizontal sequence
Row, the 5th horizontal sequence are 8 as 2 quantity of microband antenna unit of the 6th horizontal sequence, therefore, eight horizontal sequences
Refer on the basis of descending or ascending order based on Y-axis.By microband antenna unit 2, on medium substrate 1, such entirety is tied
Structure so that antenna area is further reduced, with high-gain, low minor level and simple structure, making easy to process it is excellent
Point.
In eight horizontal sequences, in each horizontal sequence, the quarter-wave transforming section 4 of microband antenna unit 2 leads to
Cross 3/4ths wavelength transmission lines 5 to connect, i.e., 8 3/4ths wavelength transmission lines 5 are had on medium substrate 1.Eight laterally
3/4ths wavelength transmission lines, 5 central spot of sequence is serially connected with main quarter wavelength impedance transducer 6, equally, main four
/ mono- wavelength impedance transformers 6 are also 8, and eight main quarter wavelength impedance transducers 6 concatenate shape by main transmission line 7
Into feeding network, the feeding network for thus constituting has the effect for reducing secondary lobe.
Waveguide-coaxial back of the body feedback joint 8 is arranged on the center of main transmission line 7, and waveguide-coaxial back of the body feedback joint 8 has structure
Simply, hold easy-to-assemble effect.As shown in figure 4, waveguide-coaxial back of the body feedback joint 8 includes standard waveguide 9, the broadside of standard waveguide 9
It is 2.845mm for 5.69mm, narrow side.Standard waveguide 9 is embedded with L-type coaxial probe 10, and L-type coaxial probe 10 is embedded in standard waveguide
The side at 9 broadside of standard waveguide place is connected to after 9 half guide wavelength.
Array antenna operating frequency described in the utility model can be 35.15GHz, and based on this operating frequency, 52 micro-
A guide wavelength be can be designed as with the spacing between antenna element 2.Excited current distribution is calculated based on Taylor's synthetic method,
Microband antenna unit 2,3/4ths wavelength transmission lines 5, quarter-wave transforming section 4 and main quarter-wave can be hindered
Resistance parallel operation 6 carries out specific design of Structural Parameters.The array of Taylor's Synthesis designing, its directional diagram is with angle deviating
The secondary lobe feature that main lobe increases and gradually successively decreases, designs the quarter-wave transforming section 4 of the first horizontal sequence also based on this
0.5096 is with the exciting current Amplitude Ratio order of the quarter-wave transforming section 4 of the 8th horizontal sequence:1:1:0.5096.
Four microband antenna units 2 that i.e. first horizontal sequence or the 8th horizontal sequence are included are in the first horizontal sequence or the 8th horizontal sequence
In row, exciting current Amplitude Ratio order is 0.5096:1:1:0.5096.Existing skill is pressed based on this exciting current Amplitude Ratio order
The characteristic impedance value of art method design quarter-wave transforming section 4, and then utilization level resistance value obtains the change of four/wavelength
Width, the length of section 4 are changed, and the width of microband antenna unit 2, length, insertion depth and groove width equidimension parameter are then
It is designed by art methods according to medium substrate parameter and operating frequency.
In the same manner, the quarter-wave of the quarter-wave transforming section 4 and the 7th horizontal sequence of the second horizontal sequence becomes
The exciting current Amplitude Ratio order for changing section 4 is 0.4447:0.7224:1:1:0.7224:0.4447.The four of 3rd horizontal sequence
/ mono- wavelength conversion section 4, the quarter-wave transforming section 4 of the 4th horizontal sequence, the quarter-wave of the 5th horizontal sequence
The exciting current Amplitude Ratio order of the quarter-wave transforming section 4 in long transforming section 4 and the 6th horizontal sequence is 0.4235:
0.5937:0.8317:1:1:0.8317:0.5937:0.4235。
In the same manner, based on Taylor's synthetic method, the excitation of eight main quarter wavelength impedance transducers 6 on main transmission line 7 swashs
It is 0.4235 that current amplitude is encouraged than order:0.5937:0.8317:1:1:0.8317:0.5937:0.4235, i.e., encouraged based on this
Impedance of the current amplitude than order to eight main quarter wavelength impedance transducers 6 is carried out based on directly by the method for prior art
Calculation draws.
As shown in figure 5, circular bore gain of array antenna simulation result of the present utility model, gain is more than 22dB, secondary lobe
Level is less than -24dB.This utility model is used as send or receive the headend equipment of electromagnetic wave can be wide in field of microwave communication
General application, using waveguide-coaxial feed mode, can solve antenna product as physical dimension restriction conventional feeding method cannot
Meet a difficult problem for radiation direction performance demand, and the unit feed current of conventional aerial feeding classification is optimized makes secondary lobe
Gain suppresses index more preferably, and also beneficial to the reasonable utilization space in product design with reduces cost, reducing debugging difficulty increases product
Product qualification rate and good stability.Using Taylor's synthetic method group battle array, minor level is reduced.Contrast with the micro-strip array antenna of 8x6
For, this utility model is the first row（Based on Y direction）Two microband antenna units are respectively removed on the left side and the right, and the second row goes
Fall a microband antenna unit, equally, two microband antenna units are respectively removed on the 7th row left side and the right, and the 8th row removes one
Microband antenna unit, reduces microband antenna unit quantity so as to can become round bore, microstrip array of the size compared with 8x6
Array antenna has reduced, and reduces antenna area.
Ultimate principle of the present utility model, principal character and advantage of the present utility model has been shown and described above.One's own profession
The technical staff of industry it should be appreciated that this utility model is not restricted to the described embodiments, described in above-described embodiment and description
Simply principle of the present utility model, on the premise of without departing from this utility model spirit and scope, this utility model also has respectively
Changes and improvements are planted, these changes and improvements are both fallen within the range of claimed this utility model.This utility model is required
Protection domain defined by appending claims and its equivalent.
Claims (8)
1. a kind of micro-strip array antenna, including medium substrate（1）With installed in medium substrate（1）The conductive earth plate of lower surface
（3）, it is characterised in that：
Described medium substrate（1）For circle, medium substrate（1）Upper surface is provided with 52 microband antenna units（2）, 52 micro-strips
Antenna element（2）On be connected to quarter-wave transforming section（4）, 52 microband antenna units（2）In medium substrate（1）Upper base
In medium substrate（1）Y direction be divided into eight horizontal sequences arrangements, microband antenna unit in each horizontal sequence（2）Four
/ mono- wavelength conversion section（4）Pass through 3/4ths wavelength transmission lines（5）Connection, the first horizontal sequence and the 8th horizontal sequence
It is 4 microband antenna units（2）, the second horizontal sequence and the 7th horizontal sequence are 6 microband antenna units（2）, the 3rd
Laterally sequence, the 4th horizontal sequence, the 5th horizontal sequence and the 6th horizontal sequence are 8 microband antenna units（2）；
3/4ths wavelength transmission lines of eight horizontal sequences（5）Central spot is serially connected with main quarter-wave impedance conversion
Device（6）, eight main quarter wavelength impedance transducers（6）By main transmission line（7）Concatenation forms feeding network, waveguide-same
Axle back of the body feedback joint（8）Installed in main transmission line（7）Center.
2. a kind of micro-strip array antenna according to claim 1, it is characterised in that：Described waveguide-coaxial back of the body feedback joint
（8）Including standard waveguide（9）, standard waveguide（9）It is embedded with L-type coaxial probe（10）, L-type coaxial probe（10）Embedded standard ripple
Lead（9）Standard waveguide is connected to after half guide wavelength（9）The side that broadside is located.
3. a kind of micro-strip array antenna according to claim 1, it is characterised in that：The four of the first horizontal sequence/
One wavelength conversion section（4）With the quarter-wave transforming section of the 8th horizontal sequence（4）Exciting current Amplitude Ratio order be
0.5096:1:1:0.5096, the quarter-wave transforming section of the second horizontal sequence（4）With four points of the 7th horizontal sequence
One of wavelength conversion section（4）Exciting current Amplitude Ratio order be 0.4447:0.7224:1:1:0.7224:0.4447, it is described
The quarter-wave transforming section of the 3rd horizontal sequence（4）, the 4th horizontal sequence quarter-wave transforming section（4）, the 5th
The quarter-wave transforming section of horizontal sequence（4）With the quarter-wave transforming section in the 6th horizontal sequence（4）Excitation
Current amplitude is 0.4235 than order:0.5937:0.8317:1:1:0.8317:0.5937:0.4235.
4. a kind of micro-strip array antenna according to claim 1, it is characterised in that：Described main transmission line（7）Upper eight
Main quarter wavelength impedance transducer（6）Exciting current Amplitude Ratio order be 0.4235:0.5937:0.8317:1:1:
0.8317:0.5937:0.4235。
5. a kind of micro-strip array antenna according to claim 1, it is characterised in that：Described medium substrate（1）Thickness
It is that 2.94, loss tangent angle δ is 0.0012 for 10mil, dielectric constant.
6. a kind of micro-strip array antenna according to claim 1, it is characterised in that：The medium substrate（1）It is a diameter of
50mm。
7. a kind of micro-strip array antenna according to claim 1, it is characterised in that：52 described microband antenna units
（2）Between spacing be a guide wavelength.
8. a kind of micro-strip array antenna according to claim 2, it is characterised in that：Described standard waveguide（9）Broadside
It is 2.845mm for 5.69mm, narrow side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621057854.4U CN206098694U (en) | 2016-09-14 | 2016-09-14 | Microstrip array antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621057854.4U CN206098694U (en) | 2016-09-14 | 2016-09-14 | Microstrip array antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206098694U true CN206098694U (en) | 2017-04-12 |
Family
ID=58476884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621057854.4U Expired - Fee Related CN206098694U (en) | 2016-09-14 | 2016-09-14 | Microstrip array antenna |
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| Country | Link |
|---|---|
| CN (1) | CN206098694U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110048225A (en) * | 2019-04-03 | 2019-07-23 | 南京理工大学 | Micro-strip array antenna |
| CN111970012A (en) * | 2020-10-22 | 2020-11-20 | 成都天锐星通科技有限公司 | Fan-shaped radio frequency network and radio frequency signal sending device |
| CN112467398A (en) * | 2020-10-30 | 2021-03-09 | 南京邮电大学 | Millimeter wave flexible circular antenna array |
| TWI806367B (en) * | 2022-01-18 | 2023-06-21 | 特崴光波導股份有限公司 | Antenna array |
-
2016
- 2016-09-14 CN CN201621057854.4U patent/CN206098694U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110048225A (en) * | 2019-04-03 | 2019-07-23 | 南京理工大学 | Micro-strip array antenna |
| CN111970012A (en) * | 2020-10-22 | 2020-11-20 | 成都天锐星通科技有限公司 | Fan-shaped radio frequency network and radio frequency signal sending device |
| CN112467398A (en) * | 2020-10-30 | 2021-03-09 | 南京邮电大学 | Millimeter wave flexible circular antenna array |
| TWI806367B (en) * | 2022-01-18 | 2023-06-21 | 特崴光波導股份有限公司 | Antenna array |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| 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: 20170412 Termination date: 20170914 |