CN107508038A - Work in the double-frequency micro-strip antenna battle array and its design method of C-band and X-band - Google Patents
Work in the double-frequency micro-strip antenna battle array and its design method of C-band and X-band Download PDFInfo
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- CN107508038A CN107508038A CN201710571896.2A CN201710571896A CN107508038A CN 107508038 A CN107508038 A CN 107508038A CN 201710571896 A CN201710571896 A CN 201710571896A CN 107508038 A CN107508038 A CN 107508038A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
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Abstract
The invention discloses the double-frequency micro-strip antenna battle array and its design method for working in C-band and X-band, including 4 yuan of microstrip antenna submatrixs and right-hand man's duplexer, described right-hand man's duplexer is formed by connecting by two right-hand man's bandpass filters with match circuit, right-hand man's bandpass filter uses the polytetrafluoroethylglass glass cloth plate that relative dielectric constant is 0.5mm for 2.65 thickness, the width w of 50 Ω microstrip lines is 1.37mm, and the width in gap and pore radius excessively are respectively：w1=w2=w3=w4=w5=0.2mm, r=0.5mm.The antenna array of the present invention is good in C/X wave band matching properties, and gain respectively reaches 10.4dB and 11.4dB.
Description
Technical field
The invention belongs to antenna system technical field, is related to a kind of double-frequency micro-strip antenna battle array for working in C-band and X-band
And its design method.
Background technology
The equipment that antenna is transmitting and reception electromagnetic wave, the front end in microwave radio commu and detection system, its property
There can be very important influence on whole system.With the rapid development of science and technology, demand of the modern society to information
Increasing, this has pushed directly on communication system to broadband development.On the one hand, with the development and broadband connections of electronic technology
The wide frequency technology of the appearance of equipment, broad-band antenna and antenna also develops constantly.On the other hand, for expand power system capacity or
Multi-mode communication is realized, actual communication system is often operated on two or more frequencies, and two secondary or how secondary days are installed in inconvenience
In the case of line, double/multifrequency antenna just arises at the historic moment.
So-called double/multifrequency antenna refers to meet system requirements in two or more different frequency range properties
Antenna, specific targets include：Standing-wave ratio, gain, directional diagram and efficiency etc..In fact, most of broad-band antenna and multifrequency day
Without too big difference, broad-band antenna substantially is regarded as when multiple resonant frequencies of antenna merge for line；It is conversely, each
When resonant frequency is apart from each other, double/multifrequency antenna is just constituted.Relative to broad-band antenna, using the advantages of double/multifrequency antenna it
First, the interference of other frequencies between passband can be suppressed to a certain extent.
The gain of dual-band antenna unit is typically relatively low, when requiring higher to antenna gain, it is necessary to using dual-band antenna
Array.
The content of the invention
It is an object of the invention to for problems of the prior art, there is provided a kind of C-band and X-band of working in
Double-frequency micro-strip antenna battle array and its design method, based on interdigital gap and ground via structure, it is proposed that new left-and-right-hand transmission line
Structure, its left hand passband and right hand passband are independently adjustable, and have band-pass filtering property, basis of the present invention in equilibrium conditions
This characteristic designs double-frequency micro-strip antenna battle array.
Its concrete technical scheme is：
A kind of double-frequency micro-strip antenna battle array for working in C-band and X-band, including 4 yuan of microstrip antenna submatrixs and right-hand man couple
Work device, described right-hand man's duplexer are formed by connecting by two right-hand man's bandpass filters with match circuit.
Right-hand man's bandpass filter uses the polytetrafluoroethylene (PTFE) glass that relative dielectric constant is 0.5mm for 2.65 thickness
Fabric swatch, the width w of 50 Ω microstrip lines is 1.37mm, and each gap width is：w1=w2=w3=w4=w5=0.2mm, cross pore radius r
=0.5mm, 6GHz bandpass filter mutual alignment relation and concrete structure parameter are：The spacing d=3.8mm in two interdigital gaps；
The height l of unit1=5mm；d1=1.85mm；The bottom lengths l of U-type groove2=3.8mm；The side edge length d of U-type groove2=
0.6mm；The length l of rectangular aperture3=2.8mm；The width d of rectangular aperture3=2.1mm；Interdigital length d4=1.45mm；U-type groove
Distance x=1.3mm away from center；Distance y=2.2mm of the ground via away from center.Close the mutual alignment of 10GHz bandpass filters
System and concrete structure parameter are：The spacing d=2.6mm in two interdigital gaps；The height l of unit1=3.4mm；d1=1.25mm；It is U-shaped
The bottom lengths l of groove2=2.3mm；The side edge length d of U-type groove2=0.6mm；The long l of rectangular aperture3=1.4mm；Rectangular aperture
Width d3=1.4mm；Interdigital length d4=1.05mm；Distance x=0.9mm of the U-type groove away from center；Ground via is away from center
Distance y=1mm.
Further, the interdigital number of 6GHz wave filters is that the interdigital number of 13,10GHz wave filters is 9.
Further, in described right-hand man's duplexer, the micro-strip line length between " 1 port " and " 2 port " is
15.75mm, the micro-strip line length between " 1 port " and " 3 port " are 14.45mm.
Further, right-hand man's bandpass filter is using balance left-and-right-hand transmission line structure, the balance left-and-right-hand transmission line
Structure includes metallic conductor and erodable section, and both sides are 50 Ω microstrip lines, and interdigital gap is equivalent to series capacitance, there is provided negative magnetic conductance
Rate effect；Radius is that r metallic ground via is equivalent to shunt inductance, there is provided negative permittivity effect.
Further, microstrip antenna submatrix equally uses relative dielectric constant as 2.65, and thickness is 0.5mm polytetrafluoroethyl-ne
Alkene glass-cloth board.Antenna patch uses a length of W square structure, is fed using 100 Ω feeder line, a pair of a length of LsIt is wide
For WsGap be in order to match regulation, the spacing of two unit centers is d.Centre frequency is the connection side of 6GHz antenna element
Formula and position relationship are：W=15.06mm, Wfeed=0.38mm, Ws=0.3mm, Ls=5.3mm；Centre frequency is 10GHz day
The connected mode and position relationship of line unit be：W=8.92mm, Wfeed=0.38mm, Ws=0.4mm, Ls=3.2mm.
The double of C/X wave bands are worked in by 4 yuan of microstrip antenna submatrixs and designed right-hand man's duplexer are designed in conjunction
Frequency microstrip antenna battle array.
A kind of design method for the double-frequency micro-strip antenna battle array for working in C-band and X-band, is comprised the following steps that：
First, it is proposed that the novel planar left-and-right-hand transmission line structure based on interdigital gap and ground via, interdigital gap
It is equivalent to series capacitance, there is provided negative magnetoconductivity effect, grounded metal via are equivalent to shunt inductance, there is provided negative permittivity is imitated
Should；And propose the equivalent-circuit model of structure；It was found that its left hand passband and right hand passband are independently adjustable, and in equilibrium condition
There is down band-pass filtering property.Secondly, the band-pass filtering property of proposed left-and-right-hand transmission line in equilibrium conditions is utilized, point
Right-hand man's bandpass filter of novel C wave band and X-band is not devised；It is new with reference to two right-hand man's Design of Bandpass
Right-hand man's duplexer.Finally, the antenna element for working in C-band and X-band and 4 yuan of antenna submatrixs have been separately designed, and have been tied
Closing right-hand man's duplexer realizes the double-frequency micro-strip antenna battle array of C/X wave bands.
Compared with prior art, beneficial effects of the present invention are：
Right-hand man's duplexer designed by the present invention is uniplanar structure, and design method is simple, and area occupied is small, very suitable
For antenna feeding network.Test result shows that antenna array is good in C/X wave band matching properties, and gain respectively reaches 10.4dB
And 11.4dB.
Brief description of the drawings
Fig. 1 is new left-and-right-hand transmission line structure model；
Fig. 2 is S parameter result of calculation under new left-and-right-hand transmission line equilibrium condition；
Fig. 3 is new left-and-right-hand transmission line equivalent-circuit model；
Fig. 4 is emulation and the test result of right-hand man's bandpass filter, wherein, Fig. 4 (a) C-bands, Fig. 4 (b) X-bands；
Fig. 5 is right-hand man's duplexer reflectance factor test result；
Fig. 6 is right-hand man's duplexer transmission coefficient test result；
Fig. 7 is right-hand man's duplexer isolating coefficient test result；
Fig. 8 is the structural representation of antenna submatrix；
Fig. 9 is dual-band antenna battle array reflectance factor result；
Figure 10 is dual-band antenna array gain result, wherein, Figure 10 (a) is 5.6GHz~6.4GHz, and Figure 10 (b) is 9.6GHz
~10.4GHz；
Figure 11 is the test result of dual-band antenna battle array directional diagram, wherein, Figure 11 (a) is 6GHz, and Figure 11 (b) is 10GHz.
Embodiment
Technical scheme is described in more detail with specific embodiment below in conjunction with the accompanying drawings.
1 balance left-and-right-hand transmission line structure
For new left-and-right-hand transmission line structure model as shown in figure 1, dark parts are metallic conductor, white is erodable section.
As can be seen that the structure is symmetrical structure, both sides are 50 Ω microstrip lines, and interdigital gap is equivalent to series capacitance, there is provided negative magnetic conductance
Rate effect；Radius is that r metallic ground via is equivalent to shunt inductance, there is provided negative permittivity effect.
Design parameter value is as shown in table 1, and interdigital number is 13, and dielectric-slab uses the relative dielectric constant to be for 2.65 thickness
1.5mm polytetrafluoroethylglass glass cloth plate.S parameter result of calculation is as shown in Fig. 2 S parameter curve has two reflection zeros and two
Individual transmission zero, two reflection zeros depend on close, respectively 3.44GHz and 3.60GHz, have the effect of bandpass filter.
Equivalent-circuit model is as shown in Figure 3.
Parameter value (the unit of the structural model of table 1：mm)
| w | l | d | l1 | d1 | l2 | d2 | l3 | d3 |
| 4.1 | 1 | 6.1 | 9 | 1.85 | 7 | 1.8 | 6 | 3.1 |
| d4 | w1 | w2 | w3 | w4 | w5 | r | x | y |
| 1.45 | 0.2 | 0.3 | 0.5 | 0.5 | 0.2 | 0.5 | 2.3 | 4.75 |
2 bandpass filters and duplexer design
According to the band-pass filtering property of new left-and-right-hand transmission line cellular construction in equilibrium conditions, can be respectively intended to design
Right-hand man's bandpass filter of two different operating frequencies, right-hand man's duplexer is further designed with reference to match circuit.Using phase
It is the polytetrafluoroethylglass glass cloth plate that 2.65 thickness are 0.5mm to dielectric constant.The ginseng of wave filter is finally determined through simulation optimization
Several as shown in table 2, in addition, the width w of 50 Ω microstrip lines is 1.37mm, the width in gap and pore radius excessively are respectively：w1=w2=
w3=w4=w5=0.2mm, r=0.5mm, wherein 6GHz wave filters interdigital number are the interdigital number of 13,10GHz wave filters
For 9.
Filter construction parameter value (the unit of table 2：mm)
| d | l1 | d1 | l2 | d2 | l3 | d3 | d4 | x | y | |
| 6GHz | 3.8 | 5 | 1.85 | 3.8 | 0.6 | 2.8 | 2.1 | 1.45 | 1.3 | 2.2 |
| 10GHz | 2.6 | 3.4 | 1.25 | 2.3 | 0.6 | 1.4 | 1.4 | 1.05 | 0.9 | 1 |
Right-hand man's bandpass filter structures designed by the present invention are compact；Fig. 4 gives simulation result and test result, can
To find out that test result is consistent with simulation result trend, the test insertion loss in two filter passbands is respectively less than 0.9dB, tool
There is less Insertion Loss.
Right-hand man's duplexer is formed by connecting by two right-hand man's bandpass filters with match circuit.Using identical medium
Plate, the micro-strip line length between " 1 port " and " 2 port " are 15.75mm, the micro-strip line length between " 1 port " and " 3 port "
For 14.45mm.Numerical simulation, processing in kind and measurement are carried out to duplexer, Fig. 5, Fig. 6 and Fig. 7 sets forth right-hand man
The test result of the reflectance factor of duplexer, transmission coefficient and isolating coefficient.
Measurement result shows that, in 6GHz, port 2 is straight-through, and port 3 isolates, | S31 |=- 41dB；It is straight in 10GHz, port 3
Logical, port 2 isolates, | S21 |=- 42dB；In the two passbands, the isolation between 2 ports and 3 ports is more than 40dB.It can be seen that
Designed right-hand man's duplexer effectively realizes the separation of two frequency bands.
3 double-frequency micro-strip antenna battle arrays design
The double of C/X wave bands are worked in by 4 yuan of microstrip antenna submatrixs and designed right-hand man's duplexer are designed in conjunction
Frequency microstrip antenna battle array.Antenna subarray configuration is as shown in Figure 8；The emulation of reflectance factor and test result are as shown in Figure 9；Gain is imitated
It is very as shown in Figure 10 with test result；The Pattern measurement result of two working frequency points is as shown in figure 11.
The reflectance factor result of double-frequency micro-strip antenna battle array can be seen that as shown in Figure 9, emulate, antenna more consistent with test result
Battle array is operated in 6GHz and 10GHz two frequency bins, and harmonic wave occur in indivedual frequencies；Figure 10 gives antenna in 5.6GHz~6.4GHz
With the emulation of gain and test value, test result show that antenna array exists at 18 frequencies in 9.6GHz~10.4GHz frequency band ranges
The gain of C/X wave bands is respectively 10.4dB and 11.4dB, and test result is more lower slightly 0.5dB~1dB than simulation result；As shown in Figure 11
Centre frequency at the test result of directional diagram understand that the directional diagram of antenna array C-band is functional, and X-band directional diagram
Secondary lobe is larger, and reason is because unit spacing is larger.
4 conclusion
Because the gain of double/multifrequency antenna unit is relatively low, when requiring higher to antenna gain, it is necessary to using dual-band antenna
Array.The design method of dual-band antenna battle array different from the past, the present invention is using new left-and-right-hand transmission line structure as feed
Network design works in the microstrip antenna array of C/X wave bands.First, it is proposed that put down based on interdigital gap and the new of ground via
Face left-and-right-hand transmission line structure, interdigital gap are equivalent to series capacitance, there is provided negative magnetoconductivity effect, grounded metal via are equivalent to
Shunt inductance, there is provided negative permittivity effect；And propose the equivalent-circuit model of structure；It was found that its left hand passband and the right hand lead to
Band is independently adjustable, and has band-pass filtering property in equilibrium conditions.Secondly, proposed left-and-right-hand transmission line is utilized flat
Band-pass filtering property under the conditions of weighing apparatus, right-hand man's bandpass filter of novel C wave band and X-band is separately designed；With reference to two
The new right-hand man's duplexer of right-hand man's Design of Bandpass, designed right-hand man's duplexer is uniplanar structure, if
Meter method is simple, and area occupied is small, is very suitable for antenna feeding network.Finally, separately designed and worked in C-band and X ripples
The antenna element and 4 yuan of antenna submatrixs of section, and combination right-hand man's duplexer realizes the double-frequency micro-strip antenna battle array of C/X wave bands, surveys
Test result shows that antenna array is good in C/X wave band matching properties, and gain respectively reaches 10.4dB and 11.4dB.
The foregoing is only a preferred embodiment of the present invention, protection scope of the present invention not limited to this, any ripe
Those skilled in the art are known in the technical scope of present disclosure, the letter for the technical scheme that can be become apparent to
Altered or equivalence replacement are each fallen within protection scope of the present invention.
Claims (5)
- A kind of 1. double-frequency micro-strip antenna battle array for working in C-band and X-band, it is characterised in that including 4 yuan of microstrip antenna submatrixs and Right-hand man's duplexer, described right-hand man's duplexer are formed by connecting by two right-hand man's bandpass filters with match circuit,Right-hand man's bandpass filter uses the polytetrafluoroethylglass glass cloth that relative dielectric constant is 0.5mm for 2.65 thickness Plate, the width w of 50 Ω microstrip lines is 1.37mm, and each gap width is：w1=w2=w3=w4=w5=0.2mm, cross pore radius r= 0.5mm, 6GHz bandpass filter mutual alignment relation and concrete structure parameter are：The spacing d=3.8mm in two interdigital gaps；It is single The height l of member1=5mm；d1=1.85mm；The bottom lengths l of U-type groove2=3.8mm；The side edge length d of U-type groove2=0.6mm； The length l of rectangular aperture3=2.8mm；The width d of rectangular aperture3=2.1mm；Interdigital length d4=1.45mm；U-type groove is away from center Distance x=1.3mm；Distance y=2.2mm of the ground via away from center；The mutual alignment relation and tool of 10GHz bandpass filters Body structural parameters are：The spacing d=2.6mm in two interdigital gaps；The height l of unit1=3.4mm；d1=1.25mm；The bottom of U-type groove Minister's degree l2=2.3mm；The side edge length d of U-type groove2=0.6mm；The long l of rectangular aperture3=1.4mm；The width of rectangular aperture d3=1.4mm；Interdigital length d4=1.05mm；Distance x=0.9mm of the U-type groove away from center；Distance y=of the ground via away from center 1mm。
- 2. the double-frequency micro-strip antenna battle array according to claim 1 for working in C-band and X-band, it is characterised in that 6GHz is filtered The interdigital number of ripple device is that the interdigital number of 13,10GHz wave filters is 9.
- 3. the double-frequency micro-strip antenna battle array according to claim 1 for working in C-band and X-band, it is characterised in that described In right-hand man's duplexer, the micro-strip line length between " 1 port " and " 2 port " is 15.75mm, between " 1 port " and " 3 port " Micro-strip line length be 14.45mm.
- 4. the double-frequency micro-strip antenna battle array according to claim 1 for working in C-band and X-band, it is characterised in that right-hand man Bandpass filter includes metallic conductor and corrosion using balance left-and-right-hand transmission line structure, the balance left-and-right-hand transmission line structure Part, both sides are 50 Ω microstrip lines, and interdigital gap is equivalent to series capacitance, there is provided negative magnetoconductivity effect；Radius is that r metal connects Ground via is equivalent to shunt inductance, there is provided negative permittivity effect.
- 5. a kind of design method for the double-frequency micro-strip antenna battle array for working in C-band and X-band, it is characterised in that specific steps are such as Under：First, it is proposed that the novel planar left-and-right-hand transmission line structure based on interdigital gap and ground via, interdigital gap are equivalent For series capacitance, there is provided negative magnetoconductivity effect, grounded metal via are equivalent to shunt inductance, there is provided negative permittivity effect；And Propose the equivalent-circuit model of structure；It was found that its left hand passband and right hand passband are independently adjustable, and have in equilibrium conditions There is band-pass filtering property；Secondly, the band-pass filtering property of proposed left-and-right-hand transmission line in equilibrium conditions is utilized, is set respectively Right-hand man's bandpass filter of novel C wave band and X-band is counted；A new left side with reference to two right-hand man's Design of Bandpass Right hand duplexer；Finally, the antenna element for working in C-band and X-band and 4 yuan of antenna submatrixs have been separately designed, and have been combined left Right hand duplexer realizes the double-frequency micro-strip antenna battle array of C/X wave bands.
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Cited By (1)
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| CN109830804A (en) * | 2019-03-26 | 2019-05-31 | 中国人民解放军空军工程大学 | Eight yuan of broadband double-circle polarization and beam-forming network and design method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109830804A (en) * | 2019-03-26 | 2019-05-31 | 中国人民解放军空军工程大学 | Eight yuan of broadband double-circle polarization and beam-forming network and design method |
| CN109830804B (en) * | 2019-03-26 | 2023-11-03 | 中国人民解放军空军工程大学 | Broadband eight-element double circular polarization and wave beam forming network and design method |
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