CN106067605A - A kind of series feed micro-strip array antenna method for designing - Google Patents

A kind of series feed micro-strip array antenna method for designing Download PDF

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Publication number
CN106067605A
CN106067605A CN201610340820.4A CN201610340820A CN106067605A CN 106067605 A CN106067605 A CN 106067605A CN 201610340820 A CN201610340820 A CN 201610340820A CN 106067605 A CN106067605 A CN 106067605A
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antenna
impedance
paster
antenna element
effective wavelength
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CN106067605B (en
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王辉
赵海明
王汝征
林莉
刘国栋
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Beijing Huahang Radio Measurement Research Institute
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/0087—Apparatus or processes specially adapted for manufacturing antenna arrays

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Aerials (AREA)

Abstract

The present invention discloses a kind of series feed microstrip antenna designs method, it is first determined electromagnetic wave effective wavelength in dielectric-slab；Number of unit is determined further according to antenna size and effective wavelength；According to design minor level, design the exciting current of each antenna element；Determine the power of each unit according to exciting current, be inversely proportional to power according to resistance, determine the impedance of each unit；According to the cell impedance determined, designing antenna patch size.By triangular plate, main feeder and paster are adjusted to true impedance, in final outlet regulation coupling.Between two antennas, additionally add plated through-hole, increase isolation between antennae.Use the method can design series feed micro-strip array antenna more simply, intuitively.

Description

A kind of series feed micro-strip array antenna method for designing
Technical field
The invention belongs to field of antenna, particularly to a kind of series feed micro-strip array antenna method for designing.
Background technology
Microstrip antenna due to volume section little, lightweight, low, can the advantage such as conformal, easy processing, radar with the neck such as communicate Territory is widely used.The generally feeding classification of micro-strip array antenna has series feed and parallelly feeding two kinds, micro-strip string The major advantage of connection feed has: feeder line is comparatively short, effectively reduces the radiation and scattering loss introduced due to feeder line, improves antenna effect Rate；The arrangement of each microband paste unit is compact, and the space availability ratio of antenna is high, reduces the area of aerial array, is more beneficial for antenna Miniaturization Design and realization.
Although the method that may be used for analyzing microstrip antenna at present is a lot.Conventional has transmission line model, cavity model, square Mensuration, FInite Element and Finite-Difference Time-Domain Method etc..But for series feed micro-strip array antenna, concrete method for designing is less.Often By equivalent circuit method, method for designing is more complicated, and the most general approximation method.
Summary of the invention
It is an object of the invention to propose a kind of series feed micro-strip array antenna method for designing, for series feed micro-strip array antenna Design.Compared to prior art, the method can the aerial array of relatively simple design series feed microstrip antenna composition.
The invention provides a kind of series feed micro-strip array antenna method for designing, technical scheme is: first correlation formula determines Electromagnetic wave effective wavelength in dielectric-slab, determines number of unit further according to antenna size and effective wavelength.Pair according to design Lobe level, designs the exciting current of each antenna element.Because from array center to edge, during array stimulating amplitude taper, battle array Row secondary lobe is relatively low.Determine the power of each unit according to exciting current, be inversely proportional to power according to resistance, determine each unit Impedance.According to the cell impedance determined, designing antenna patch size.Specifically adjust the length of paster, width reaches design True impedance.Each paster cascades, and paster spacing is 1 effective wavelength.By triangular plate, main feeder and paster are adjusted to true impedance, In final outlet regulation coupling.Between two antennas, additionally add plated through-hole, increase isolation between antennae.And it is golden The closeest (spacing < the λ in genusization hole0/ 15), guarantee isolation.
Technical scheme is as follows:
A kind of series feed microstrip antenna designs method, the method comprises the steps:
Step 1, first determine electromagnetic wave effective wavelength in dielectric-slab；
Step 2, determine number of unit further according to antenna size and effective wavelength；
Step 3, according to the minor level that is pre-designed and the described number of unit of step 2, design each antenna element Exciting current；
Step 4, determine the power of each antenna element according to each antenna element excitation electric current, and then according to each antenna The power of unit determines the impedance of each antenna element；
Step 5, impedance according to each antenna element determined, designing antenna patch size；
Step 6 thus complete the design of series feed microstrip antenna.
Further, in step 5, designing antenna patch size includes:
The adjustment length of paster, width reach the true impedance of design；Each paster cascades, and paster spacing is predetermined significant wave Long；By triangular plate, main feeder and paster being adjusted to true impedance, the outlet regulating at array antenna is mated；Additionally in two skies Add plated through-hole between line, increase isolation between antennae；And make plated through-hole reach preset space length.
Further, paster spacing is for making a reservation for an effective wavelength particularly as follows: paster spacing is 1 effective wavelength.
Further, plated through-hole reaches preset space length particularly as follows: be smaller than λ0/ 15, wherein, λ0For Antenna Operation The wavelength that mid frequency is corresponding.
Further, in step 5 during designing antenna patch size, cell impedance is adjusted to true impedance, the void of energy storage Impedance is adjusted to zero.
Further, especially by the length and width of three butt chocks that regulation is connected with antenna patch, energy storage Virtual impedance is set to zero.
Further, at the outlet regulating standing wave of array antenna.
Further, step 6 also includes: by multiple described antenna element regular array, forms aerial array.
The beneficial effects of the present invention is: make series feed microstrip antenna designs method simple, practical, it is simple to design.Not yet There is employing equivalent circuit method, but use the method for designing of impedance transition mechanism, simple, directly perceived, it is easy to design.
Accompanying drawing explanation
Fig. 1 is series feed microstrip antenna schematic diagram；
Fig. 2 is paster 4-paster 5 schematic diagram；
Fig. 3 is paster 3-paster 5 schematic diagram；
Fig. 4 is paster 2-paster 5 schematic diagram；
Fig. 5 is 1 × 2 aerial array schematic diagram.
Detailed description of the invention
With detailed description of the invention, technical scheme is described in detail below in conjunction with the accompanying drawings.
Technical scheme is as follows:
A kind of series feed microstrip antenna designs method, the method comprises the steps:
Step 1, first determine electromagnetic wave effective wavelength in dielectric-slab；
Step 2, determine antenna element number further according to antenna size and effective wavelength；
Described antenna element number is that antenna size divided by effective wavelength and rounds.
Step 3, according to the minor level that is pre-designed and the described antenna element number of step 2, design each antenna list The exciting current of unit；
Described exciting current can be substituted into minor level by secondary lobe weighted formula and antenna element number be calculated.
Step 4,
(4.1) power of each antenna element is determined according to each antenna element excitation electric current；
Concrete, it is assumed that the resistance value of each antenna element is the most identical, thus obtains corresponding merit by its exciting current Rate.
(4.2) impedance of each antenna element and then is determined according to power；
Concrete, by formula P=U2/ Z determines the impedance of each antenna element.Wherein, P is power, and U is voltage, Z For impedance.
Step 5, impedance according to each antenna element determined, designing antenna patch size；
Step 6 thus complete the design of series feed microstrip antenna.
Further, in step 5, designing antenna patch size includes:
The adjustment length of paster, width reach the true impedance of design；Each paster cascades, and paster spacing is predetermined significant wave Long；Being adjusted to true impedance by 4 main feeders of triangular plate and paster, the outlet regulating at array antenna is mated；Additionally at two Add plated through-hole between antenna, increase isolation between antennae；And make plated through-hole reach preset space length.
Further, paster spacing is for making a reservation for an effective wavelength particularly as follows: paster spacing is 1 effective wavelength.
Further, plated through-hole reaches preset space length particularly as follows: be smaller than λ0/ 15, wherein, λ0For Antenna Operation The wavelength that mid frequency is corresponding.
Further, in step 5 during designing antenna patch size, cell impedance is adjusted to true impedance, the void of energy storage Impedance is adjusted to zero.
Further, especially by the length and width of three butt chocks that regulation is connected with antenna patch, energy storage Virtual impedance is set to zero.
Further, at the outlet regulating standing wave of array antenna.
Further, step 6 also includes: by multiple described antenna element regular array, forms aerial array.
The series feed micro-strip array antenna specification figure of the present invention is as Figure 1-Figure 4.Described series feed micro-strip array antenna It is made up of micro-strip paster antenna 1, dielectric-slab 2 and deposited copper ground 3.Using double-deck microband paste, upper strata is paster antenna 1, and lower floor is Applying copper ground 3, they spread on the both sides of dielectric-slab 2.Multiple chip units form series feed linear array by main feeder cascade.
First printed board thickness h is selected according to operating frequency of antenna.The wavelength that the mid frequency of Antenna Operation is corresponding is λ0, Dielectric-slab thickness h is typically chosen in 0.01 λ0-0.03λ0。
Effective dielectric constant ε according to formula 1 calculation medium platee.ε in formula 1rFor dielectric-slab relative dielectric constant, w is Micro belt line width, now takes
&epsiv; e = 1 2 &lsqb; &epsiv; r + 1 + ( &epsiv; r - 1 ) &CenterDot; ( 1 + 10 h w ) - 1 2 &rsqb; - - - ( 1 )
Electromagnetic wave effective wavelength λ in dielectric-slab is calculated according to formula 2e。
&lambda; e = &lambda; 0 &epsiv; e - - - ( 2 )
In series feed microstrip antenna designs, in order to make each chip unit homophase feed, chip unit spacing be 1 effectively Wavelength Xe.Can be according to antenna size and effective wavelength λeDetermine the number of chip unit.Can determine according to formula (3), (4) The width W of microband paste and the initial value of length L.
W = &lambda; 0 2 ( &epsiv; e + 1 2 ) - 1 2 - - - ( 3 )
L = &lambda; 0 2 &epsiv; e - - - ( 4 )
Because unit interval is 1 λe, the number of unit can be determined according to antenna size.Determine the impedance of main feeder, The initial value of main feeder live width is determined according to formula (5).When specifically emulating, the value of calculation of each formula has fine setting.
Z = 1 &epsiv; e &lsqb; 60 &CenterDot; l n ( 8 h w + w 4 h ) &rsqb; - - - ( 5 )
Wherein, Z is main feeder characteristic impedance.
The exciting power of each unit is determined according to linear array weighting.The resistance of chip unit is determined according to element excitation power Anti-.Specifically cell impedance is inversely proportional to paster exciting power.First the impedance of first paster is determined, then true according to ratio The impedance of other paster fixed.As it is shown in figure 1, the length and width of regulation paster, paster impedance is adjusted to the impedance of needs.Patch Sheet width mainly affects the true impedance of paster, and length mainly affects the virtual impedance of paster.The impedance of each paster is adjusted to and needs After the impedance wanted, each paster cascades successively from final stage.It Fig. 2 is the cascade system of two pasters of final stage.General main feeder resistance The anti-impedance much smaller than antenna patch, it is impossible to be adjusted mating with paster to main feeder.The present invention is then that impedance is adjusted to True impedance, is adjusted to zero the virtual impedance of energy storage.Especially by the length and width of adjusting triangle paster 4, the empty resistance of energy storage Resist and set to zero.According to this step, each chip unit cascades successively.In final outlet, then regulate standing wave.Fig. 3, Fig. 4 are 3 respectively Paster, the cascade system of 4 pasters.
Multiple described antenna element regular array, form aerial array.Fig. 5 is 1 × 2 aerial array, two antennas it Between add plated through-hole 5, increase isolation between antennae.
Above-mentioned detailed description of the invention is only used for explaining and explanation technical scheme, but can not constitute and want power Ask the restriction of protection domain.It will be apparent to those skilled in the art that on the basis of the technical program, carry out any simple change Shape or replacement and the new technical scheme that obtains, all will fall under the scope of the present invention.

Claims (8)

1. a series feed microstrip antenna designs method, it is characterised in that the method comprises the steps:
Step 1, first determine electromagnetic wave effective wavelength in dielectric-slab；
Step 2, determine antenna element number further according to antenna size and effective wavelength；
Step 3, according to the minor level that is pre-designed and the described antenna element number of step 2, design each antenna element Exciting current；
Step 4, determine the power of each antenna element according to each antenna element excitation electric current, and then according to each antenna element Power determine the impedance of each antenna element；
Step 5, impedance according to each antenna element determined, designing antenna patch size；
Step 6 thus complete the design of series feed microstrip antenna.
2. the method for claim 1, it is characterised in that in step 5, designing antenna patch size includes:
The adjustment length of paster, width reach the true impedance of design；Each paster cascades, and paster spacing is predetermined effective wavelength； By triangular plate, main feeder and paster being adjusted to true impedance, the outlet regulating at array antenna is mated；Additionally at two antennas Between add plated through-hole, increase isolation between antennae；And make plated through-hole reach preset space length.
3. method as claimed in claim 2, it is characterised in that paster spacing for predetermined effective wavelength particularly as follows: between paster Away from for 1 effective wavelength.
4. method as claimed in claim 2, it is characterised in that plated through-hole reaches preset space length particularly as follows: be smaller than λ0/ 15, wherein, λ0For the wavelength that the mid frequency of Antenna Operation is corresponding.
5. the method for claim 1, it is characterised in that in step 5 during designing antenna patch size, cell impedance is adjusted Whole for true impedance, the virtual impedance of energy storage is adjusted to zero.
6. method as claimed in claim 5, it is characterised in that three butt chocks being connected with antenna patch especially by regulation Length and width, the virtual impedance of energy storage is set to zero.
7. the method as according to any one of claim 1-6, it is characterised in that at the outlet regulating standing wave of array antenna.
8. the method as according to any one of claim 1-7, it is characterised in that step 6 also includes: by multiple described antenna lists Meta-rule is arranged, and forms aerial array.
CN201610340820.4A 2016-05-20 2016-05-20 A kind of series feed micro-strip array antenna design method Active CN106067605B (en)

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Cited By (12)

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CN106972244A (en) * 2017-02-28 2017-07-21 惠州硕贝德无线科技股份有限公司 A kind of trailer-mounted radar array antenna
CN108598706A (en) * 2018-04-27 2018-09-28 广东曼克维通信科技有限公司 Omnidirectional antenna
CN108629139A (en) * 2018-05-14 2018-10-09 北京科技大学 Microstrip antenna designs method
CN109193146A (en) * 2018-09-12 2019-01-11 北京工业大学 A kind of micro-strip millimeter wave antenna
CN109768394A (en) * 2017-11-09 2019-05-17 北京木牛领航科技有限公司 The method of microstrip antenna structure and electromagnetic radiation signal
CN109786985A (en) * 2018-12-12 2019-05-21 南京安捷智造科技有限公司 A kind of Rectangular Microstrip Standing-wave Antennas antenna based on coplanar waveguide ground
CN110165398A (en) * 2019-05-27 2019-08-23 长安大学 The series feed micro-strip linear array antenna of Ka wave band standing wave formula, planar array and production method
CN110556622A (en) * 2018-05-30 2019-12-10 Tdk株式会社 Antenna device, antenna substrate, and antenna element
CN111162377A (en) * 2019-12-12 2020-05-15 深圳森云智能科技有限公司 Series feed microstrip array antenna and combined microstrip array antenna
CN111428428A (en) * 2020-04-17 2020-07-17 无锡威孚高科技集团股份有限公司 Design method of weighted linear array antenna
CN112803159A (en) * 2021-03-30 2021-05-14 成都天锐星通科技有限公司 Feed linear array and radar antenna
US11043749B2 (en) 2019-05-09 2021-06-22 Pegatron Corporation Antenna structure

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106972244A (en) * 2017-02-28 2017-07-21 惠州硕贝德无线科技股份有限公司 A kind of trailer-mounted radar array antenna
CN106972244B (en) * 2017-02-28 2020-03-27 惠州硕贝德无线科技股份有限公司 Vehicle-mounted radar array antenna
CN109768394A (en) * 2017-11-09 2019-05-17 北京木牛领航科技有限公司 The method of microstrip antenna structure and electromagnetic radiation signal
CN108598706A (en) * 2018-04-27 2018-09-28 广东曼克维通信科技有限公司 Omnidirectional antenna
CN108629139A (en) * 2018-05-14 2018-10-09 北京科技大学 Microstrip antenna designs method
CN110556622B (en) * 2018-05-30 2021-02-05 Tdk株式会社 Antenna device, antenna substrate, and antenna element
CN110556622A (en) * 2018-05-30 2019-12-10 Tdk株式会社 Antenna device, antenna substrate, and antenna element
US10965036B2 (en) 2018-05-30 2021-03-30 Tdk Corporation Antenna system, antenna substrate, and antenna element
CN109193146A (en) * 2018-09-12 2019-01-11 北京工业大学 A kind of micro-strip millimeter wave antenna
CN109786985A (en) * 2018-12-12 2019-05-21 南京安捷智造科技有限公司 A kind of Rectangular Microstrip Standing-wave Antennas antenna based on coplanar waveguide ground
US11043749B2 (en) 2019-05-09 2021-06-22 Pegatron Corporation Antenna structure
CN110165398A (en) * 2019-05-27 2019-08-23 长安大学 The series feed micro-strip linear array antenna of Ka wave band standing wave formula, planar array and production method
CN111162377A (en) * 2019-12-12 2020-05-15 深圳森云智能科技有限公司 Series feed microstrip array antenna and combined microstrip array antenna
CN111428428A (en) * 2020-04-17 2020-07-17 无锡威孚高科技集团股份有限公司 Design method of weighted linear array antenna
CN111428428B (en) * 2020-04-17 2023-09-08 无锡威孚高科技集团股份有限公司 Design method of weighted linear array antenna
CN112803159A (en) * 2021-03-30 2021-05-14 成都天锐星通科技有限公司 Feed linear array and radar antenna

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