CN107134647A - A kind of millimeter wave antenna of the frequency-adjustable based on BST substrates - Google Patents
A kind of millimeter wave antenna of the frequency-adjustable based on BST substrates Download PDFInfo
- Publication number
- CN107134647A CN107134647A CN201710512642.3A CN201710512642A CN107134647A CN 107134647 A CN107134647 A CN 107134647A CN 201710512642 A CN201710512642 A CN 201710512642A CN 107134647 A CN107134647 A CN 107134647A
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- China
- Prior art keywords
- bst
- substrates
- millimeter wave
- antenna
- frequency
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/065—Patch antenna array
-
- 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
- H01Q5/10—Resonant antennas
-
- 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
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/321—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors within a radiating element or between connected radiating elements
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a kind of millimeter wave antenna of the frequency-adjustable based on BST substrates, it includes BST substrates, the millimeter wave antenna being arranged on the BST substrates, the BST substrates include first surface and relative second surface, the millimeter wave array antenna system is set on the first surface, positive electrode is provided with the first surface, it is provided with the second surface on grounding electrode, the BST substrates and is provided with the metallic vias connected with the positive electrode.The present invention solves the problems, such as the limited space of integrated multiple antennas in limited space, improves the band support of antenna, reduces cost.
Description
Technical field
The present invention relates to a kind of communication antenna, the millimeter wave day of more particularly to a kind of frequency-adjustable based on BST substrates
Line.
Background technology
Wavelength claims millimeter wave for 1 ~ 10 millimeter of electromagnetic wave, and it is located at the wave-length coverage that microwave overlaps mutually with far infrared wave,
The characteristics of thus having two kinds of wave spectrums concurrently, is the main frequency range of next generation communication.Millimeter wave array antenna is with equal by constant amplitude
Plane or the aerial array of solid that mode is realized.There is presently no the listing of millimeter wave terminal, the research side of millimeter wave mainly
To still in the research of base station or single antenna, the research on communication terminal such as mobile phone also rests on millimeter wave group order of matrix
Section, mainly studies the form of a period of time and group battle array.
At present, with the development of mobile terminal technology, the integrated functional module of terminal is also more and more, causes mobile whole
The free space at end is less and less；Meanwhile, with the update of the communication technology, increasing standard and frequency range can be by simultaneously
It is integrated on antenna, including primary antenna, diversity antenna, WBG antennas etc., the space and area shared by antenna are also increasing, can
The space that be used to make antenna is then fewer and fewer, and increasing antenna will also result in the liter of R＆D costs and human cost
It is high.It is contemplated that, under 5G communication eras, the free space of antenna can turn into an intractable problem.
The scheme used in the prior art is：The antenna of different frequencies not similar shape.Predictably with the development of communication,
In the near future, the antenna system and quantity in terminal can be more and more, cause terminal and antenna works teacher can't bear the heavy load.
Existing patent is mostly that all communications bands are integrated in terminal using PIFA antennas or LOOP antennas, excessively
Communications band result in the complexity of Antenna Design and occupy excessive terminal space, cause terminal space crowded.Millimeter
The fixation for the frequency range that wave antenna is supported, it is impossible to be tuned, therefore, a millimeter wave antenna can only support a certain specific frequency
Section, patent CN201410605282.8 discloses a kind of millimeter wave antenna near field with flat belt-like wave beam, can be used for
The communication of millimere-wave band, but frequency range is fixed, it is impossible to change.
Therefore, it is necessary to provide a kind of millimeter wave antenna of the new frequency-adjustable based on BST substrates to solve above-mentioned ask
Topic.
The content of the invention
It is a primary object of the present invention to provide a kind of millimeter wave antenna of the frequency-adjustable based on BST substrates, solve
The limited space problem of integrated multiple antennas, improves the band support of antenna, reduces cost in limited space.
The present invention is achieved through the following technical solutions above-mentioned purpose：A kind of millimeter wave of the frequency-adjustable based on BST substrates
Antenna, it includes BST substrates, the millimeter wave antenna being arranged on the BST substrates, the BST substrates include first surface with
Relative second surface, the millimeter wave array antenna system is set on the first surface, is provided with just on the first surface
It is provided with electrode, the second surface on grounding electrode, the BST substrates and is provided with the metal mistake connected with the positive electrode
Hole.
Further, its be used for it is integrated on mobile terminals, the positive electrode by the metallic vias and direct current just
Electrode links together.
Further, together with the grounding electrode is connected with the ground on mainboard by mainboard.
The millimeter wave array antenna system includes the rectangular metal paster and the square of some square array distributions
The first feed element and the second feed element of shape metal patch connection, the rectangular metal paster formation array of array distribution
Antenna element.
Further, all rectangular metal pasters are connected by micro-strip bonding jumper.
Further, first feed element is located at the array antenna unit respectively with second feed element
Adjacent both sides and it is arranged in a mutually vertical manner.
Further, first feed element includes two distributing points with second feed element.
Further, the distributing point is connected by microstrip line and connection unit with the array antenna unit.
Further, two sections of different width are provided with the microstrip line, the width close to described distributing point one end is small.
Compared with prior art, a kind of beneficial effect of the millimeter wave antenna of the frequency-adjustable based on BST substrates of the present invention
It is：Make full use of millimeter wave antenna to occupy little space, the characteristics of communication efficiency is good, and be integrated in the substrate of BST materials
On, the feature changed to antenna resonant frequency can be brought by using BST substrates, is realized by BST materials to millimeter wave antenna
The adjustment of resonant frequency, it is achieved thereby that realizing the call of multiple frequency ranges with an antenna, it is to avoid space it is crowded, save
Space-consuming；And the antenna of the frequency-adjustable of this programme greatly reduces the complexity of Antenna Design, and then reduce manpower
Cost and R＆D costs.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is overlooking the structure diagram of the millimeter wave array antenna system on BST substrates in the embodiment of the present invention；
Fig. 3 is that the structural diagrams of connection unit in the embodiment of the present invention are intended to；
Fig. 4 is the antenna pattern that the embodiment of the present invention is emulated under horizontal polarization mode；
Fig. 5 is the antenna pattern that the embodiment of the present invention is emulated under vertical polarization mode；
Numeral is represented in figure：
1BST substrates, 11 first surfaces, 12 second surfaces；2 millimeter wave array antenna systems, 21 rectangular metal pasters, 22 first
Feed element, 23 second feed elements, 24 micro-strip bonding jumpers, 25 microstrip lines, 26 connection units；P1, P2, P3, P4 distributing point；3
Positive electrode；4 grounding electrodes；5 metallic vias.
Embodiment
Embodiment：
Fig. 1 is refer to, the present embodiment is the millimeter wave antenna of the frequency-adjustable based on BST substrates, and it includes BST substrates 1, setting
Millimeter wave array antenna system 2 on BST substrates 1, BST substrates 1 include first surface 11 and relative second surface 12, milli
Metric wave array antenna system 2 is arranged on first surface 11, is provided with positive electrode 3, second surface 12 and is set on first surface 11
It is equipped with the metallic vias 5 for being provided with and being connected with positive electrode 3 on grounding electrode 4, BST substrates 1.
The millimeter wave antenna of frequency-adjustable of the present embodiment based on BST substrates be used for it is integrated on mobile terminals, positive electrode 3
Linked together by metallic vias 5 with direct current positive electrode；Grounding electrode 4 is connected by the ground on mainboard and mainboard
Together.When dc source is powered, the dielectric constant of BST substrates 1 can change, and the variable quantity of dielectric constant depends on BST
Material tunable characteristic and the alive size of the two ends of BST substrates 1 institute and polarity.
Fig. 2 is refer to, millimeter wave array antenna system 2 includes the rectangular metal paster of some square array distributions
21st, the first feed element 22 and the second feed element 23 connected with rectangular metal paster 21.The rectangular metal patch of array distribution
The formation array antenna unit of piece 21.
All rectangular metal pasters 21 are connected by micro-strip bonding jumper 24.Rectangular metal paster 21 is connected with bonding jumper 22
Logical, it is that ensure that the joint feed between unit that it, which is acted on,.
The length of side of rectangular metal paster 21 is 1-4mm, specifically, when needing to design 28GHZ millimeter wave band antenna,
The selection that the length of side of rectangular metal paster 21 is optimal is 3-4 mm, so ensure that the generation of rectangular metal paster 21 of unit
Resonant frequency is radiated in corresponding millimeter wave band；When needing to design 60GHZ millimeter wave band antenna system, rectangular metal
The value that the length of side of paster 21 is optimal is 1-2mm.
Coupled characteristic between the distance between two neighboring rectangular metal paster 21 meeting significant impact unit, to most
The general direction figure and wave beam forming of array afterwards（Wave beam forming is a kind of Signal Pretreatment technology based on aerial array, wave beam
Figuration produces the wave beam with directive property by adjusting the weight coefficient of each array element in aerial array, so as to obtain substantially
Array gain）Effect produces influence.Therefore, in the present embodiment, longitudinal direction or horizontal stroke between two neighboring rectangular metal paster 21
It is 4-6mm to distance, specifically, when 28GHz frequency ranges are designed, it is single when designing 60GHz arrays with the intervals of 6mm preferably
Corresponding scaled down is wanted at the interval of member, now, and selection 4mm is optimal.
First feed element 22 is identical with the structure of the second feed element 23, respectively positioned at the adjacent of the array antenna unit
Both sides and be arranged in a mutually vertical manner.First feed element 22 and the second feed element 23 include two distributing points, are respectively
P1 and P2, P3 and P4, this fed System can preferably adjust input impedance, it is ensured that the matching properties of whole antenna system；And
By the associated working of the first feed element 22 and the second feed element 23, antenna can produce circular polarisation（When radio wave
Angle between plane of polarization and the earth normal face is from the change in 0 ~ 360 ° of cycle, i.e. electric field level is constant, and direction is changed over time,
It is a bowlder that the track of electric field intensity end is projected in the plane perpendicular to the direction of propagation, referred to as circular polarisation, in electric field
Horizontal component and vertical component amplitude are equal, when phase differs 90 ° or 270 °, just can obtain circular polarisation.）Feature, now justifies
The mechanism of production of polarization characteristic is：When adjusting the phase difference of distributing point in two groups of feed elements, feed antenna system ensure that
The energy of system is 90 degree of phase differences, in addition, the position of two groups of distributing points determine the energy of feed-in be spatially it is orthogonal, with
Upper described 2 points meet the condition that circular polarisation is produced, so whole antenna system can realize circular polarisation.The distributing point leads to
Cross microstrip line 25 and connection unit 26 is connected with the array antenna unit.Two sections of different width are provided with microstrip line 25,
Width close to described distributing point one end is small.By setting the different structure of microstrip line 25 of width, the resistance of distributing point can be realized
Resistance, it is ensured that feed point impedance and Antenna Impedance Matching, it is ensured that feed in energy analysis try one's best it is many pass to antenna end and radiate,
Reduce loss.
Microstrip line 25 in first feed element 22 is arranged in a mutually vertical manner with the microstrip line 25 in the second feed element 23, and
The energy of feed-in is in space on the respective corresponding sides in the array antenna unit, the position to ensure two groups of distributing points
On be orthogonal.
Fig. 3 is refer to, connection unit 26 is " a returning " font sheet metal structure.Connection unit 26 is one in three-back-shaped
The port network structure of micro-strip pattern four, the port is defined as A, B, C, D port, wherein C, D port feed in energy analysis successively, A,
Energy is transferred directly to the array antenna unit by B ports, but because of the metal patch group in the array antenna unit
The interval of battle array is nearer, and serious mutual coupling can be deposited between A, B port, and C-terminal mouthful to A ports except feeding, inevitably to B
Port is coupled, equally, and D wishes port to feed to B ports, but is also inevitably coupled on A ports, and four more than
The design of port match network, ensure that C-terminal mouthful overwhelming majority energy feed-in A, D ports major part energy feed-in B ports absolutely,
The influence of mutually symplectic group of battle array can be eliminated.Four ports are divided into two groups respectively on one group of opposite side of connection unit 26,
And one of which port is connected by microstrip line 25 with the distributing point, another set port is connected with rectangular metal paster 21.
Fig. 4 and Fig. 5 is respectively antenna pattern of the present embodiment under level, vertical polarization mode, from Fig. 2 and Fig. 3
It can be seen that the directionality of the antenna pattern of horizontal and vertical two polarization modes is all very good, greatest irradiation direction is consistent,
All in 0 degree of direction, this shows that whole antenna system is actually to realize good circular polarization radiation characteristic.And the present embodiment is double
The entire gain of the circle polarized millimeter wave array antenna system 100 of feedback formula can reach more than 20DBI, realize high-gain special
Property.
The change of BST substrate dielectric constants can bring the change of the resonant frequency for the paster antenna being produced on substrate, humorous
The variable quantity of vibration frequency depends on BST material properties and institute alive size and polarity.The resonance of millimeter wave array antenna system 2
Frequency changes with voltage change added by the two ends of BST substrates 1, and the call of multiple frequency ranges just can be so realized with an antenna,
Avoid the crowded of space；And the complexity of Antenna Design is greatly reduced using such adjustable antenna, it is multiple without making
For the antenna of different frequency range, reduction human cost and R＆D costs.
The present embodiment is by the integrated millimeter wave array antenna system on BST substrates, and by millimeter wave array antenna system
The circular polarized antenna of double-fed type is designed to, it can radiate circularly polarised wave electromagnetic wave, good wave beam forming can produced
On basis, transmitting-receiving efficiency can be preferably improved, the purpose for reducing polarization loss is reached.Do not increasing the basis of array quantity
On, the millimeter wave array antenna of circular polarization characteristics is designed, the electromagnetic wave of horizontal polarization and vertical polarization can be produced simultaneously, is protected
Antenna system has been demonstrate,proved while receiving and transmitting signal, the circle designed in the polarization loss of antenna, this programme is reduced to the full extent
The millimeter wave array of polarization can not only perfectly solve conception of the 3GPP tissues to following millimeter wave dual polarization characteristic, together
When also filled up the blank that terminal antenna never has circular polarized antenna truly.
The beneficial effect of the millimeter wave antenna of frequency-adjustable of the present embodiment based on BST substrates is：Make full use of millimeter
The characteristics of wave antenna occupies little space, communication efficiency is good, and be integrated on the substrate of BST materials, by using BST substrates
The feature changed to antenna resonant frequency can be brought, the adjustment to millimeter wave antenna resonant frequency is realized by BST materials, so that
Realize the call that multiple frequency ranges are realized with an antenna, it is to avoid space it is crowded, save space-consuming；And this programme
The antenna of frequency-adjustable greatly reduces the complexity of Antenna Design, and then reduces human cost and R＆D costs.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, not
On the premise of departing from the invention design, various modifications and improvements can be made, these belong to the protection model of the present invention
Enclose.
Claims (9)
1. a kind of millimeter wave antenna of the frequency-adjustable based on BST substrates, it is characterised in that：It includes BST substrates, is arranged on institute
The millimeter wave array antenna system on BST substrates is stated, the BST substrates include first surface and relative second surface, described
Millimeter wave array antenna system is set on the first surface, is provided with the first surface on positive electrode, the second surface
It is provided with grounding electrode, the BST substrates and is provided with the metallic vias connected with the positive electrode.
2. the millimeter wave antenna of the frequency-adjustable as claimed in claim 1 based on BST substrates, it is characterised in that：It is used to collect
Into on mobile terminals, the positive electrode is linked together by the metallic vias with direct current positive electrode.
3. the millimeter wave antenna of the frequency-adjustable as claimed in claim 2 based on BST substrates, it is characterised in that：The ground connection
Together with electrode is connected with the ground on mainboard by mainboard.
4. the millimeter wave antenna of the frequency-adjustable as claimed in claim 1 based on BST substrates, it is characterised in that：The millimeter
The rectangular metal paster of ripple array antenna system including some square array distributions, connected with the rectangular metal paster
First feed element and the second feed element, the rectangular metal paster formation array antenna unit of array distribution.
5. the millimeter wave antenna of the frequency-adjustable as claimed in claim 4 based on BST substrates, it is characterised in that：All institutes
Rectangular metal paster is stated to connect by micro-strip bonding jumper.
6. the millimeter wave antenna of the frequency-adjustable as claimed in claim 4 based on BST substrates, it is characterised in that：Described first
Feed element positioned at the adjacent both sides of the array antenna unit and is arranged in a mutually vertical manner respectively with second feed element.
7. the millimeter wave antenna of the frequency-adjustable as claimed in claim 4 based on BST substrates, it is characterised in that：Described first
Feed element includes two distributing points with second feed element.
8. the millimeter wave antenna of the frequency-adjustable as claimed in claim 7 based on BST substrates, it is characterised in that：The feed
Point is connected by microstrip line and connection unit with the array antenna unit.
9. the millimeter wave antenna of the frequency-adjustable as claimed in claim 8 based on BST substrates, it is characterised in that：The micro-strip
Two sections of different width are provided with line, the width close to described distributing point one end is small.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710512642.3A CN107134647A (en) | 2017-06-29 | 2017-06-29 | A kind of millimeter wave antenna of the frequency-adjustable based on BST substrates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710512642.3A CN107134647A (en) | 2017-06-29 | 2017-06-29 | A kind of millimeter wave antenna of the frequency-adjustable based on BST substrates |
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| CN107134647A true CN107134647A (en) | 2017-09-05 |
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| CN201710512642.3A Pending CN107134647A (en) | 2017-06-29 | 2017-06-29 | A kind of millimeter wave antenna of the frequency-adjustable based on BST substrates |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107887711A (en) * | 2017-09-20 | 2018-04-06 | 讯创(天津)电子有限公司 | A kind of 5G tunable antennas |
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| CN206864632U (en) * | 2017-06-29 | 2018-01-09 | 昆山睿翔讯通通信技术有限公司 | A kind of millimeter wave antenna of the frequency-adjustable based on BST substrates |
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2017
- 2017-06-29 CN CN201710512642.3A patent/CN107134647A/en active Pending
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| CN206864632U (en) * | 2017-06-29 | 2018-01-09 | 昆山睿翔讯通通信技术有限公司 | A kind of millimeter wave antenna of the frequency-adjustable based on BST substrates |
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