CN102938504A - Single-board microstrip slot phased-array antenna with simple beam control system - Google Patents
Single-board microstrip slot phased-array antenna with simple beam control system Download PDFInfo
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- CN102938504A CN102938504A CN2012104891843A CN201210489184A CN102938504A CN 102938504 A CN102938504 A CN 102938504A CN 2012104891843 A CN2012104891843 A CN 2012104891843A CN 201210489184 A CN201210489184 A CN 201210489184A CN 102938504 A CN102938504 A CN 102938504A
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Abstract
The invention relates to a single-board microstrip slot phased-array antenna which is based on a single-board system integration technology, compact in structure and simple in beam control system. The single-board microstrip slot phased-array antenna comprises a dielectric substrate, wherein a metallic grounding plate is arranged on one surface of the dielectric substrate, at least two row-direction microstrip lines and a column-direction microstrip line are arranged on the other surface of the dielectric substrate, and equidistant slot or microstrip slot antennae are formed on the metallic grounding plate through etching along straight lines corresponding to all the row-direction microstrip lines; the column-direction microstrip line is connected with one ends of the row-direction microstrip lines respectively through direct current (DC) blocking capacitors, and the other ends of the row-direction microstrip lines are respectively connected with matched loads through DC blocking capacitors; one end of the column-direction microstrip line is connected with a matched load through a DC blocking capacitor, and the other end of the column-direction microstrip line is connected with a radio-frequency terminal through a DC blocking capacitor; and row-direction barium strontium titanate (BST) strips are respectively arranged between all the row-direction microstrip lines and the dielectric substrate, and a column-direction BST strip is also arranged between the column-direction microstrip line and the dielectric substrate.
Description
One, technical field:
The present invention relates to a kind ofly based on the very simple veneer microstrip gap phased array antenna of single board system integrated technology, compact conformation and beam controlling system, this antenna can be used for portable low-cost millimeter wave real time imagery and radar system.
Two, background technology
Antenna is requisite important component part in the systems such as radar, mm-wave imaging and radio communication, antenna transmission or receive electromagnetic beam position and need regular motion in a lot of application scenarios (for example target acquisition radar or millimeter wave scanning imaging system), i.e. scanning.The scanning of antenna beam can realize by mechanically operated mode, also can adopt the mode of electrical control to realize.Mechanical scanning is that antenna is done the beam scanning that mechanical movement realizes by instruction, the sweep speed of antenna is not high, affect data transmission rate, and the accurate scanning of wave beam also need to overcome the larger antenna of effect of inertia, the especially size of mechanical movement and quality all the more so.Electronic scanning antenna is not done mechanical movement, and antenna transmission or received beam can set the change sensing of noninertia ground, spatial domain, and sweep speed also improves greatly.
The above-mentioned intrinsic advantage of electronic scanning antenna plays a part it in radar and millimeter wave imaging system very important.Take mm-wave imaging as example, except the electric scanning imaging mode, also have the mechanical scanning imaging and stare the imaging mode such as focal array imaging, but these two kinds of imaging modes there is the shortcoming that is difficult to overcome.The mechanical scanning imaging is becoming the focal plane scanning of image antenna by the mechanical device driving sensor, perhaps driving whole slave antenna scans the far field, the major defect of this scan mode is that the rate travel of mechanical device is difficult to guarantee real time imagery, and the existence of mechanical scanner has reduced the portability of system; And stare the CCD that the focal plane battle array is similar to domestic digital camera, and in theory, needing in this system has a plurality of receivers that equate with the focal plane array number, thus so that the cost of whole focal array imaging system is quite expensive.If adopt the electric scanning imaging then can significantly reduce the quantity of receiver even only use a receiver, effectively control cost, and accomplish real time imagery.In radar system, the outstanding representative phased array antenna of electronic scanning antenna is being brought into play the effect that can not be substituted especially, and the military radar of every country highest level all is phased array radar at present.
Traditional phased array antenna system is by interconnecting composition with numerous phase shifter (Phase shifter-PS) and antenna (Antenna), these phase shifters all are devices independently, except connecting radio frequency (Radio Frequency-RF) line, also be connected with respectively the wave beam control line (Control Line-CL) of oneself, and link to each other with beam-controller (BeamController), this is so that the system complex of traditional phase array, integrated level is low, portability is poor, and involves great expense.
Utilize ferroelectric material (for example: barium strontium titanate Ba
xSr
1-xTiO
3-BST) the dielectric adjustable under the direct voltage effect can be made the electric tuning element of function admirable, compares transistor, ferrite and MEMS device, and this electricity based on BST is transferred element to have to have the advantages that power consumption is little, cost is low, reliability is high.The dielectric adjustable of BST is used for phased array design, can design the outstanding novel phase array of structure and performance.The present invention is based on the BST material, in conjunction with aerial array that can be integrated, a kind of novelty, succinct phase array structure are proposed, utilize the beam steering system of phased array antenna of this structural design very simple, whole system all is integrated in (System onBoard-SoB) on the pcb board, integrated level is high, is conducive to volume miniaturization and weight reduction with whole imaging or radar system.
Three, summary of the invention:
The present invention relates to a kind ofly based on the simple veneer microstrip gap of single board system integrated technology, compact conformation and beam controlling system phased array antenna, this antenna can be used for portable, low-cost millimeter wave real time imagery and radar system.The characteristics of this phased array antenna are that phase shifter and the antenna array in the system organically combines, so that whole antenna system can be integrated on the monolithic PCB, the control system of beam scanning is very simple.
The present invention adopts following technical scheme:
The simple veneer microstrip gap of a kind of beam controlling system phased array antenna, comprise: medium substrate, a surface at medium substrate is provided with grounding plate, be provided with at least two row on another surface of medium substrate to microstrip line and row to microstrip line, on grounding plate along with every row to the corresponding equally spaced slit-microstrip slot antenna of straight line etching of microstrip line, row are connected with the end of row to microstrip line respectively by capacitance to microstrip line, the capable other end to microstrip line is distinguished the matching connection load by capacitance, described row pass through the load of capacitance matching connection to an end of microstrip line, row are connected to radio-frequency head to the other end of microstrip line by capacitance,, be listed as to barium strontium titanate BST bar to being provided with between microstrip line and the medium substrate at row to being respectively equipped with row between microstrip line and the medium substrate to barium strontium titanate BST bar at every row.Not during on-load voltage, per two adjacent row are to existing initial row to phase difference δ between the electromagnetic signal of microstrip line between microstrip line and the ground plate
y, simultaneously, the electromagnetic signal of propagating and being coupled to along every row to microstrip line between two adjacent microstrip slot antennas on the ground plate respective straight also has an initial row to phase difference δ
x, so that antenna array produces one and δ
yAnd δ
xCorresponding beam position.When applying direct voltage V at every row between microstrip line and the grounding plate
2And apply direct voltage V at row between microstrip line and the grounding plate
1After, row changes to barium strontium titanate BST bar and the dielectric constant of row to barium strontium titanate BST bar, and the propagation velocity of electromagnetic signal changes thereupon, so that δ
xAnd δ
yThe corresponding variation occurs, and is changed to respectively δ
x+ Δ δ
xAnd δ
y+ Δ δ
y, Δ δ
xThat row is to the variable quantity of phase difference, Δ δ
yBe the variable quantity that is listed as to phase difference, at this moment antenna produces and δ
x+ Δ δ
xAnd δ
y+ Δ δ
yCorresponding beam position, thus reach the purpose of beam scanning.
Compared with prior art, the present invention has following advantage:
Has extremely simple beam steering system, for a M * N array, no matter how many its M and N values be, the two-dimensional scan that realizes wave beam only needs two-way wave beam control line-be two-way voltage control line, and a traditional M * N array phased array antenna then needs M * N road wave beam control line (for example: 3 * 3 arrays shown in Figure 1 need 9 road wave beam control lines altogether).Usually, phase array has thousands of even up to ten thousand unit, and that is to say needs thousands of roads wave beam control line, and simple and easy degree and the cost structure of system had a strong impact on; And among the present invention in the phase array structure scan control to wave beam only need two-way voltage control line, system is simple and save cost.In addition, the microstrip line that is positioned among the present invention on the bst thin film partly is the part of phase-shift circuit structure, plays again the effect that connects antenna simultaneously, thereby so that whole phase array structure forms a kind of accurate seamless link, be conducive to reduce system bulk and weight, and make compact conformation of the present invention.And in the common phased array system, each phase shifter needs to have separately independently control line, and each phase shifter can not link into an integrated entity as the phase shifting part among the present invention, and forms accurate seamless link with antenna.
The content that the present invention relates to not only can be used for the development low cost, portable electric scanning millimeter wave imaging system is significant, also can be used for development low cost, compact electronically scanned radar antenna.
Four, description of drawings
Fig. 1 is the wave beam control schematic diagram of existing common phase array.
Fig. 2 is two dimensional phased battle array schematic diagram of the present invention.
Fig. 3 is structural representation of the present invention.
Fig. 4 is the microstrip slot antenna schematic diagram on the ground plate.
Five, embodiment
The simple veneer microstrip gap of a kind of beam controlling system phased array antenna, comprise: medium substrate 1, a surface at medium substrate 1 is provided with grounding plate 6, be provided with at least two row on another surface of medium substrate 1 to microstrip line 3 and row to microstrip line 2, on grounding plate 6 along with every row to the equally spaced slit-microstrip slot antenna 12 of the corresponding straight line etching of microstrip line, row are connected with the end of row to microstrip line 3 respectively by capacitance 8 to microstrip line 2, row passes through respectively matching connection loads 9 of capacitance 8 to the other end of microstrip line 3, described row pass through capacitance 8 matching connection loads 9 to an end of microstrip line 2, row are connected to radio-frequency head 10 to the other end of microstrip line 2 by capacitance 8,, be listed as to barium strontium titanate BST bar 11 to being provided with between microstrip line 2 and the medium substrate 1 at row to being respectively equipped with row between microstrip line 3 and the medium substrate 1 to barium strontium titanate BST bar 4 at every row.Not during on-load voltage, per two adjacent row are to existing initial row to phase difference δ between the electromagnetic signal of microstrip line between microstrip line and the ground plate
y, simultaneously, the electromagnetic signal along every row to microstrip line between 3 two adjacent microstrip slot antennas 1 propagating and be coupled on ground plate 6 respective straight also has an initial row to phase difference δ
x, so that antenna array produces one and δ
yAnd δ
xCorresponding beam position.When between microstrip line 3 and grounding plate 6, applying direct voltage V at every row
2And between microstrip line 2 and grounding plate 6, apply direct voltage V at row
1After, row changes to barium strontium titanate BST bar 4 and the dielectric constant of row to barium strontium titanate BST bar 11, and the propagation velocity of electromagnetic signal changes thereupon, so that δ
xAnd δ
yThe corresponding variation occurs, and is changed to respectively δ
x+ Δ δ
xAnd δ
y+ Δ δ
y, Δ δ
xThat row is to the variable quantity of phase difference, Δ δ
yBe the variable quantity that is listed as to phase difference, at this moment antenna produces and δ
x+ Δ δ
xAnd δ
y+ Δ δ
yCorresponding beam position, thus reach the purpose of beam scanning.
The key that realizes this two dimensional phased battle array structure is to realize the isolation of AC and DC signal, DC power supply V
1With row in parallel between the microstrip line 2, between the Difference row orientation microstrip line 3 and row microstrip line 3 afterwards in parallel and DC power supply V
2Connecting line adopt the line 7 that crawls of perfectly straight flow resistance high frequency, interact and AC signal is leaked to DC circuit to the AC signal of transmission between the microstrip line 3 to prevent row; Row between microstrip line 3 and the radio-frequency head 10, row between microstrip line 3 and the matched load 9, row to microstrip line 3 be listed as between the microstrip line 2 and be listed as to the capacitance 8 that stopping direct current then is set leads to high frequency between microstrip line and the matched load 9, in order to avoid direct current signal is leaked to alternating current circuit.Matched load 9 is used for absorbing a small amount of electromagnetic wave that does not radiate, and prevents that the end reflection ripple from producing harmful effect.
Claims (1)
1. the simple veneer microstrip gap of beam controlling system phased array antenna, comprise: medium substrate, a surface at medium substrate is provided with grounding plate (6), be provided with at least two row on another surface of medium substrate to microstrip line (3) and row to microstrip line (2), grounding plate (6) upper along with every row to the corresponding equally spaced slit-microstrip slot antenna of straight line etching (12) of microstrip line, row are connected with the end of row to microstrip line (3) respectively by capacitance (8) to microstrip line (2), row passes through respectively matching connection load (9) of capacitance (8) to the other end of microstrip line (3), described row pass through capacitance (8) matching connection load (9) to an end of microstrip line (2), row are connected to radio-frequency head (10) to the other end of microstrip line (2) by capacitance (8), go to barium strontium titanate BST bar (4) to being respectively equipped with between microstrip line (3) and the medium substrate (1) at every row, be listed as to barium strontium titanate BST bar (11) to being provided with between microstrip line (2) and the medium substrate (1) at row, not during on-load voltage, per two adjacent row are to existing initial row to phase difference δ between the electromagnetic signal of microstrip line between microstrip line and the ground plate
y, simultaneously, the electromagnetic signal that (3) are propagated and are coupled between two adjacent microstrip slot antennas (1) on ground plate (6) respective straight along every row to microstrip line also has an initial row to phase difference δ
x, so that antenna array produces one and δ
yAnd δ
xCorresponding beam position; When between microstrip line (3) and grounding plate (6), applying direct voltage V at every row
2And between microstrip line (2) and grounding plate (6), apply direct voltage V at row
1After, row is to barium strontium titanate BST bar (4) and be listed as to the dielectric constant of barium strontium titanate BST bar (11) and change, and the propagation velocity of electromagnetic signal changes thereupon, so that δ
xAnd δ
yThe corresponding variation occurs, and is changed to respectively δ
x+ Δ δ
xAnd δ
y+ Δ δ
y, Δ δ
xThat row is to the variable quantity of phase difference, Δ δ
yBe the variable quantity that is listed as to phase difference, at this moment antenna produces and δ
x+ Δ δ
xAnd δ
y+ Δ δ
yCorresponding beam position, thus reach the purpose of beam scanning.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104891843A CN102938504A (en) | 2012-11-26 | 2012-11-26 | Single-board microstrip slot phased-array antenna with simple beam control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104891843A CN102938504A (en) | 2012-11-26 | 2012-11-26 | Single-board microstrip slot phased-array antenna with simple beam control system |
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| CN102938504A true CN102938504A (en) | 2013-02-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106569198A (en) * | 2016-11-07 | 2017-04-19 | 深圳市速腾聚创科技有限公司 | Fan-shaped phased array radar and control method of fan-shaped phased array radar |
| CN107819202A (en) * | 2017-09-30 | 2018-03-20 | 北京邮电大学 | Beam scanning reflecting antenna array and beam sweeping method based on graphene |
| CN109196716A (en) * | 2016-05-27 | 2019-01-11 | 夏普株式会社 | The manufacturing method of scanning antenna and scanning antenna |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5694134A (en) * | 1992-12-01 | 1997-12-02 | Superconducting Core Technologies, Inc. | Phased array antenna system including a coplanar waveguide feed arrangement |
| CN101267061A (en) * | 2008-04-25 | 2008-09-17 | 华南理工大学 | A micro belt aperture shaping wave bundle antenna with serial ladder impedance line feedback |
-
2012
- 2012-11-26 CN CN2012104891843A patent/CN102938504A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5694134A (en) * | 1992-12-01 | 1997-12-02 | Superconducting Core Technologies, Inc. | Phased array antenna system including a coplanar waveguide feed arrangement |
| CN101267061A (en) * | 2008-04-25 | 2008-09-17 | 华南理工大学 | A micro belt aperture shaping wave bundle antenna with serial ladder impedance line feedback |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109196716A (en) * | 2016-05-27 | 2019-01-11 | 夏普株式会社 | The manufacturing method of scanning antenna and scanning antenna |
| CN109196716B (en) * | 2016-05-27 | 2021-01-01 | 夏普株式会社 | Scanning antenna and manufacturing method thereof |
| CN106569198A (en) * | 2016-11-07 | 2017-04-19 | 深圳市速腾聚创科技有限公司 | Fan-shaped phased array radar and control method of fan-shaped phased array radar |
| CN107819202A (en) * | 2017-09-30 | 2018-03-20 | 北京邮电大学 | Beam scanning reflecting antenna array and beam sweeping method based on graphene |
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Application publication date: 20130220 |