CN101075702B - Printing antenna with baseplate integrated waveguide feeder - Google Patents
Printing antenna with baseplate integrated waveguide feeder Download PDFInfo
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- CN101075702B CN101075702B CN2007100244862A CN200710024486A CN101075702B CN 101075702 B CN101075702 B CN 101075702B CN 2007100244862 A CN2007100244862 A CN 2007100244862A CN 200710024486 A CN200710024486 A CN 200710024486A CN 101075702 B CN101075702 B CN 101075702B
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- 238000007639 printing Methods 0.000 title description 4
- 239000002184 metal Substances 0.000 claims abstract description 28
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 239000000758 substrate Substances 0.000 claims description 69
- 230000007704 transition Effects 0.000 claims description 32
- 230000010354 integration Effects 0.000 claims description 31
- 230000003071 parasitic effect Effects 0.000 claims description 12
- 238000001465 metallisation Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 11
- 238000007789 sealing Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 5
- 230000008054 signal transmission Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005388 cross polarization Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003872 feeding technique Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000008485 antagonism Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
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Abstract
A chip integrated waveguide feeding print antenna is composed by a chip with its two metal sides being transfixed with metal through holes in array. The two metal sides are in axial symmetry. There is an intergrading section to one side of the waveguide centerline on two surface of the chip linking with transmission line. To the outer end of the intergrading section links a vibrator antenna. To the opposite side of the intergrading section on the waveguide links a micro-strip intergrading commutator linking with micro-strip transmission line.
Description
Technical field
The present invention relates to a kind of antenna and feeding technique that is applied to fields such as radio communication, electronic reconnaissance and antagonism and radar, this antenna feeder adopts substrate integration wave-guide (Substrate Integrated Waveguide SIW) feed and plane electric circuit technology, is particularly suitable for antenna feeder and need realizes the application scenario that the plane is integrated and seal with system.
Background technology
It is traditional three-dimensional structure mostly that the coaxial line that antenna feeder in the electronic equipment is commonly used, rectangular waveguide reach the antenna structure that adapts with these transmission lines.They have high power capacity, low-loss advantage, but the processing cost height is not suitable for modern planar circuit integrated.Integrated and the light-weighted requirement of equipment for adaptive system, people have proposed the antenna feeder technology of multiple suitable planographic technology, comprising microstrip line, the line of rabbet joint, co-planar waveguide etc., and the various antennas that adapt with these transmission lines, as the antenna of various microstrip antennas and printing form.Though these technology have solved the requirement integrated with circuit preferably, also exist, loss little such as power capacity big, because of problems such as structure opening inconvenience sealings.In many isolated occasions that need circuit and antenna, common way is the partition wall perforate to be allowed the transmission line of open architectures such as microstrip line pass, or transfers by coaxial fitting.The former inconvenience sealing, the latter has increased complexity and volume, cost.Substrate integration wave-guide (SIW) technology has overcome conventional three-dimensional structural transmission line and general closed planar transmission line shortcoming.The SIW technology has also kept general closed planar printing transmission line and be easy to integrated, lightweight, easily process, be convenient to advantage such as sealing, but the antenna system of suitable SIW feed also is not a lot of when keeping conventional waveguide high power, low-loss advantage.Therefore need that a kind of new method of research solves that antenna feeder is integrated, antenna feeder and circuit is integrated and sealing problem.
Summary of the invention
Technical problem: the printed antenna that the objective of the invention is to propose a kind of feeding substrate integrated waveguide, make it can satisfy the requirement of the integrated and sealing of antenna feeder and circuit well, expand the range of application of SIW technology simultaneously, make it to be applicable to various application occasions in field of antenna.This antenna feeder has that power capacity is big, loss is little, volume is little, cost is low, be convenient to advantages such as batch process.
Technical scheme: antenna of the present invention and feeding technique are based on SIW technology, SIW and gradual change two-wire, microstrip line transition and printed dipole antenna technology.Adopt the SIW transmission, give the printed dipole antenna feed by the transition of SIW-two-wire, the crack of cracking on the dividing plate between circuit and the antenna (or reflecting plate of antenna), antenna passes the slit with the SIW section and realizes being tightly connected with the dividing plate inboard circuit.
The printed antenna of feeding substrate integrated waveguide of the present invention, comprise a dielectric substrate, with the substrate integration wave-guide on dielectric substrate, the substrate integration wave-guide that it is characterized in that this antenna constitutes by the metal covering of dielectric substrate upper and lower surface with through the zone that the plated-through hole array of double layer of metal face up and down surrounds, and the metal covering axial symmetry of this upper and lower surface is provided with; Wherein, in the upper and lower surface of dielectric substrate, being connected with the gradual transition section of two-wire line in a side of substrate integration wave-guide center line, is that gradual transition line balance end is connected with element antenna in the outer end of gradual transition section; Be connected with the microstrip transition adapter with the symmetrical opposite side of gradual transition section on substrate integration wave-guide, the outside of microstrip transition adapter connects microstrip transmission line.
Also following structure can be arranged on the basis of above structure: one side of the gradual transition section on substrate integration wave-guide is provided with parasitic bar.The both sides of the gradual transition section on substrate integration wave-guide is respectively equipped with parasitic bar.Be symmetrical in the parasitic bar of dielectric substrate both sides in gradual transition section both sides, connect by the 5th metallization via-hole array.
Be provided with the first rectangular metal band and the second rectangular metal band of doublet antenna at the opposite side that is symmetrical in the element antenna on the dielectric substrate, and element antenna be connected with the second rectangular metal band with the first rectangular metal band of doublet antenna by the 4th plated-through hole array.
Beneficial effect: the present invention has following advantage:
1. owing to adopt substrate integration wave-guide, make between antenna and the circuit sealing more simple and convenient and economical as feeder.Circuit box dividing plate or antenna-reflected plate can directly be pressed on the last bottom surface of substrate integration wave-guide (21 among Fig. 1, Fig. 2), need perforate or additional any switching measure in addition on dividing plate, and the purpose that just can reach sealing can not influence the signal transmission yet.
2. the mode with transition line has realized the Direct Transform of waveguide to two-wire (the TE ripple is to the TEM ripple), has realized that SIW is the element antenna feed, has expanded the range of application of SIW technology in field of antenna.
3. adopt substrate integration wave-guide as feeder, to compare power capacity big with transmission lines such as little band, co-planar waveguides, and loss is little.
4. with the plated-through hole array single-sided structure is expanded to two-sided symmetrical print structure, increased structural symmetry, improved cross polarization and bandwidth performance.Increase control, the reduction array E face mutual coupling of parasitic antenna realization to antenna E ground roll beam width.
5. the each several part of whole antenna feeder becomes one, and is simple in structure, all utilizes the PCB explained hereafter, and cost is low, precision is high, good reproducibility, is fit to produce in enormous quantities.
Description of drawings
Fig. 1 is the printed antenna structural representation of basic model feeding substrate integrated waveguide.
Fig. 2 is the printed antenna structural representation of the feeding substrate integrated waveguide of two-sided symmetrical print structure.
Have among the above figure: dielectric substrate 1, substrate integration wave-guide 2, the metal level 21 of dielectric substrate upper and lower surface, two row metal via-hole array 22, the waveguide broadside 23 of substrate integration wave-guide, the gradual transition section 3 of substrate integration wave-guide and two-wire line, the gradual transition section input 31 on the substrate integration wave-guide broadside, the balance output 32 of gradual transition section, oscillator the first arm 41, oscillator second arm 42, oscillator the first arm 41, oscillator second arm 42 constitutes element antenna 4, plated-through hole array 4a, the first rectangular metal band 41b, the second rectangular metal band 42b, parasitic bar 5, plated-through hole array 5a, the parasitic bar 5 opposite shapes metal band 5b identical with 5, substrate integration wave-guide-microstrip transition adapter 6, microstrip transmission line 7.
Embodiment
The printed antenna of feeding substrate integrated waveguide (as shown in Figure 1) comprises a dielectric substrate 1, substrate integration wave-guide 2 on dielectric substrate 1 (substrate integration wave-guide 2 constitutes by the metal 21 of dielectric substrate upper and lower surface with through the zone that the plated-through hole array 22 of double layer of metal face up and down surrounds), the gradual transition section 3 of substrate integration wave-guide and two-wire line, two arm oscillator the first arms 41 of the element antenna that is connected with gradual transition line balance end, oscillator second arm 42, parasitic bar 5 and substrate integration wave-guide-microstrip transition adapter 6 and microstrip transmission line 7, the input 31 of gradual transition section is connected waveguide broadside 23 centers of both sides up and down at substrate with substrate integration wave-guide, the balance output 32 of gradual transition section connects the first arm 41 and second arm 42 of printing vibrator, oscillator the first arm 41, oscillator second arm 42 constitutes element antenna 4, parasitic bar 5 below the oscillator the first arm 41 and second arm 42 is a selectable unit, can be in order to broadening antenna E face directional diagram beamwidth, in array also in order to reduce E face mutual coupling between antenna element, for being connected with the microstrip line of circuit, the other end of substrate integration wave-guide links to each other with microstrip transmission line 7 by substrate integration wave-guide-microstrip transition adapter 6, on the basis of Fig. 1 structure, pass through with plated-through hole array 4a oscillator the first arm 41, the first rectangular metal band 41b that oscillator second arm 42 is relative with it respectively, the second rectangular metal band 42b connects, with plated-through hole array 5a the parasitic bar 5 metal band 5b identical with 5 with substrate opposite shape is connected (as shown in Figure 2), bandwidth of operation is increased, and cross-polarization performance improves.
Embodiment 1 has the printed antenna of the feeding substrate integrated waveguide of metallic reflection plate.
Antenna structure as shown in Figure 2, dimensional units is mm.The metallic reflection board size is 150 * 150 * 4, and (L * W * H) has 43 * 1 slit and allows the dielectric substrate that has substrate integration wave-guide and printed antenna pass on reflecting plate.The sizes of substrate of present embodiment is 43 * 44 * 1.Reflecting plate one side is to extraradial antenna, and opposite side is SIW and the transition switching that is connected with circuit.Make the slit be positioned at the SIW place, the purpose of can reach sealing like this, isolating can not cause the short circuit of radiofrequency signal again because the slit on the metallic reflection plate is connected with the metal of substrate upper and lower surface.
The printed antenna battle array of the feeding substrate integrated waveguide that embodiment 2 and the realization of circuit shielding box are tightly connected.
Realize the antenna array structure that is tightly connected by the circuit of slit on reflecting plate and the shielding box wall and circuit shielding box inside by the printed antenna of feeding substrate integrated waveguide, example is 8 * 8 array, be processed with 8 printed antenna unit (representing with Fig. 1 structure) of arranging by horizontal direction on the every antenna plate for drawing to make things convenient in the schematic diagram as the feeding substrate integrated waveguide of Fig. 1 or structure shown in Figure 2, each unit is connected by the inner corresponding circuit of slit on reflecting plate and the circuit box housing and circuit box by the SIW section, has 8 layers of such circuit box and antenna plate vertical arrangement and constitutes 8 * 8 array.Because the slit of every layer of circuit box directly is crimped on SIW and goes up and can not influence the signal transmission, the place, slit is coated with fluid sealant and also can impact the signal transmission, so the antenna of this structure can solve airtight, watertight connectivity problem between antenna and the circuit well.
This patent work obtains the subsidy of innovation colony of state natural sciences fund committee fund 60621002.
Claims (5)
1. the printed antenna of a feeding substrate integrated waveguide, comprise a dielectric substrate (1), with the substrate integration wave-guide (2) on dielectric substrate (1), the substrate integration wave-guide (2) that it is characterized in that this antenna constitutes the metal covering of this upper and lower surface (21) axial symmetry setting by the metal covering (21) of dielectric substrate (1) upper and lower surface with through the zone that the plated-through hole array (22) of double layer of metal face (21) up and down surrounds; Wherein, upper and lower surface in dielectric substrate (1), side at substrate integration wave-guide (2) center line is the gradual transition section (3) that substrate integration wave-guide (2) broadside center is connected with two-wire line, is that gradual transition line balance end is connected with element antenna (4) in the outer end of gradual transition section (3); Be connected with microstrip transition adapter (6) at the opposite side that substrate integration wave-guide (2) is gone up and gradual transition section (3) is symmetrical, the outside of microstrip transition adapter (6) connects microstrip transmission line (7).
2. the printed antenna of feeding substrate integrated waveguide according to claim 1 is characterized in that one side of the gradual transition section (3) on substrate integration wave-guide (2) is provided with parasitic bar (5).
3. the printed antenna of feeding substrate integrated waveguide according to claim 1 is characterized in that the both sides of the gradual transition section (3) on substrate integration wave-guide (2) is respectively equipped with parasitic bar (5).
4. the printed antenna of feeding substrate integrated waveguide according to claim 3 is characterized in that being symmetrical in gradual transition section (3) both sides being connected the parasitic bar (5) of dielectric substrate (1) both sides by the 5th metallization via-hole array (5a).
5. the printed antenna of feeding substrate integrated waveguide according to claim 1, it is characterized in that being provided with the first rectangular metal band (41b) and the second rectangular metal band (42b) of doublet antenna, and element antenna (4) is connected with the second rectangular metal band (42b) with the first rectangular metal band (41b) of doublet antenna by the 4th plated-through hole array (4a) at the opposite side that is symmetrical in the element antenna (4) on the dielectric substrate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100244862A CN101075702B (en) | 2007-06-19 | 2007-06-19 | Printing antenna with baseplate integrated waveguide feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100244862A CN101075702B (en) | 2007-06-19 | 2007-06-19 | Printing antenna with baseplate integrated waveguide feeder |
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| Publication Number | Publication Date |
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| CN101075702A CN101075702A (en) | 2007-11-21 |
| CN101075702B true CN101075702B (en) | 2011-02-16 |
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| CN2007100244862A Active CN101075702B (en) | 2007-06-19 | 2007-06-19 | Printing antenna with baseplate integrated waveguide feeder |
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