CN102280698B - Parallel fed array antenna and processing and forming method thereof - Google Patents
Parallel fed array antenna and processing and forming method thereof Download PDFInfo
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- CN102280698B CN102280698B CN201110110604.8A CN201110110604A CN102280698B CN 102280698 B CN102280698 B CN 102280698B CN 201110110604 A CN201110110604 A CN 201110110604A CN 102280698 B CN102280698 B CN 102280698B
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Abstract
The invention relates to a parallel fed array antenna and a processing and forming method thereof. The processing and forming method comprises the following steps of: 1, processing a medium structure of the parallel fed array antenna by adopting a drawing or extruding die forming technology; 2, performing a metallization process or laminate process on the surface of the obtained medium structure; and 3, grinding to remove metal coatings on an excitation port surface (60i), end surfaces (60a-60h) of a second-part medium and two end faces (60j and 60k) in the width direction of the parallel fed array antenna by adopting a grinding process; or the method comprises the following steps of: 10, dividing the parallel fed array antenna into a plurality of layers structurally, and processing layer by layer; and 20, seamlessly welding layered structures made of metal materials or plastic materials of which the outer surfaces are metalized in order. The array antenna has the characteristics of ultra wide band and high efficiency.
Description
Technical field
This invention is mainly used in the Production design of antenna, particularly relates to and presents array antenna and processing molding method thereof.
Background technology
The major defect of the generalized waveguide continuous gap joint array antenna of Filled Dielectrics is dielectric loss, and dielectric loss is at millimeter wave frequency band highly significant.Other shortcoming also comprises: the unsteadiness of the material parameter that inhomogeneities and anisotropy due to medium cause, the fluctuation of dielectric material parameter with environmental change and the high cost of special microwave material, etc.
The structure of microwave structure and Filled Dielectrics that air is filled is compared, and dielectric loss significantly diminishes, and overcomes the unsteadiness of the material parameter that the inhomogeneities of dielectric material itself and anisotropy cause.In addition, because electromagnetic energy is propagated by air instead of media, therefore, those can be selected to have excellent physical characteristic for generalized waveguide continuous gap joint array antenna but the very poor engineering plastics (as: ABS) of microwave property make, and can simulate metallic conductor well at the surface spraying coat of metal of this kind of engineering plastics.But the microwave structure that air is filled also has problems, particularly for waveguiding structure, because microwave circuit characteristic needs the accuracy of waveguide inside dimension to ensure, and be cannot detect the machining accuracy of its inside dimension by external instrument after the assembling product of waveguiding structure, this just requires that we will propose the processing method of a kind of continuous gap of the generalized waveguide for air filling joint array antenna, this method can the accurate location of each parts of strict guarantee and machining accuracy, the conductive slot of uniformly continous can be provided again on wave guide wall to facilitate welding simultaneously.
This invention be and presents generalized waveguide continuous gap joint array antenna and provide two kinds of effective processing molding methods, and the method is also applicable to the machine-shaping that array antenna is saved in the continuous gap of series feed generalized waveguide.
Summary of the invention
Several generalized waveguide continuous gap joint radiating element permutation and combination, and the feeding network feed arranged side by side be made up of parallel-plate waveguide is formed and presents generalized waveguide continuous gap joint array antenna.Process and present generalized waveguide continuous gap joint array antenna and have two kinds of methods.First method, adopt stretch or extrusion die shaping, this method is applicable to the situation that waveguide medium is dielectric material, be especially applicable to compared with low-frequency range and present generalized waveguide continuous gap joint array antenna; Second method, adopt the moulding process of hierarchy, this method is mainly applicable to the situation that waveguide medium is air, specifically comprises: first and present generalized waveguide continuous gap joint array antenna be divided into some layers, every one deck utilizes conventional machine to add or mould molding technology; Then, utilize ultrasonic bonding or Vacuum Soldering Technology, the hierarchy these metal materials or outer surface being done the plastic material of metalized is assembled and welds together.
And present structure more than series feed complex structure, processing molding method therefore involved in the present invention mainly for and present generalized waveguide continuous gap joint array antenna, but be also applicable to the machine-shaping of series feed generalized waveguide continuous gap joint array antenna.
For the situation that waveguide medium is dielectric material, according to and present the cross-sectional structure careful design mould of generalized waveguide continuous gap joint array antenna, stretching or extrusion process is adopted to produce the dielectric member part of the array antenna of different in width, then metallization process process is done on this dielectric member surface, excitation port is ground away finally by grinding technics, radiation port and along the coat of metal on two end faces of array antenna Width, the media fraction being in these positions is exposed in atmosphere, the metallic member of such dielectric member both sides just constitutes together with filled media part and presents parallel-plate waveguide feeding network and the generalized waveguide continuous gap joint radiating element of generalized waveguide continuous gap joint array antenna.Adopt this technique, maximum benefit is: whole array, without any splicing gap, does not need bonding or welding.But when the width of array antenna is remarkable, ensure that whole array structure is reliable, transformer section in feeding network and T-shaped branch just can not be too thin, therefore, this Measures compare be applicable to applying to compared with low-frequency range and present the processing and manufacturing of generalized waveguide continuous gap joint array antenna.
For the situation that waveguide medium is air, adopt hierarchical process, namely whole and present generalized waveguide continuous gap joint array antenna and do longitudinally cutting, from top to bottom, subdivision is some layers successively, and every one deck utilizes conventional machine to add or mould molding technology; Then, utilize ultrasonic bonding or Vacuum Soldering Technology, the hierarchy these metal materials or outer surface being done the plastic material of metalized is assembled and welds together.Use the technical process of these maturations, can guarantee that product has lower or medium processing cost, be beneficial to the production in enormous quantities in industrialization process.
Comparatively speaking, dielectric loss significantly diminishes for the microwave device of cavity (that is: air transmission medium) structure and the structure of Filled Dielectrics, and overcomes the unsteadiness of the material parameter that the inhomogeneities of dielectric material itself and anisotropy cause; In addition, at metal and the air interface place of cavity structure, metal wall surfaces unusual light, and at the metal of Filled Dielectrics structure and dielectric interface place, metal wall surfaces is more rough, therefore, the former conductor losses is far smaller than the conductor losses of the latter, especially at millimeter wave frequency band.
Because electromagnetic energy is propagated by air instead of media, therefore based on the consideration of product cost aspect, those can be selected to have excellent physical characteristic for generalized waveguide continuous gap joint array antenna but the very poor engineering plastics (as: ABS) of microwave property make.Conventional machine is utilized to add or injection mold produces each laminated plastics component, then metallization process (vacuum deposition+electroless plating) or laminating technology is used, these laminated plastics components surface spraying or laminate metal level in order to simulate metallic conductor, this processing molding method is very applicable to the production in enormous quantities of low cost antenna.
Need close tolerance and application scenario firm in structure for those, the laminated element of whole array antenna just can not select plastics, and must select metal material (for reducing weight, generally selecting aluminium).For reducing conductor losses, these layered metal components need to do surface treatment, finally utilize specific frock clamp and Vacuum Soldering Technology that they are assembled and are welded into an entirety.
The feeding network utilizing parallel-plate waveguide to form carries out (parallel connection) feed side by side to the radiating curtain be arranged in a combination by generalized waveguide continuous gap joint radiating element, formed and present generalized waveguide continuous gap joint array antenna, the array antenna of this structure has ultra broadband and high efficiency feature, be highly suitable for multi-functional military channels or commercial signal communication system (digital microwave and global satellite communication), above-mentioned hierarchical process is of value to this and presents the machine-shaping of generalized waveguide continuous gap joint array antenna.
Dual polarization is also presented generalized waveguide continuous gap joint array antenna by two single polarizations and is presented generalized waveguide continuous gap joint array antenna is mutually orthogonal forms, and the dual polarization of this structure is also presented generalized waveguide continuous gap joint array antenna dielectric material must be adopted as waveguide medium.Dual polarization also presents the detailed forming process that array antenna is saved in the continuous gap of generalized waveguide, one is divided into five steps: the first step, be some layers the longitudinally cutting from top to bottom of the Filled Dielectrics part of double polarization array antenna, every one deck utilizes conventional machine to add or mould molding technology; Second step, exposes aerial all outer surfaces to every one deck dielectric member respectively and does metallization process or lamination process; 3rd step, employing grinding technics grinds away the coat of metal on every one deck designated surface; 4th step, utilizes Plastic Welding or adhesive technology seamless for the respective surfaces of each dielectric member layer link, ensures that excitation port surface and radiating aperture surface expose in atmosphere simultaneously; 5th step, utilizes ultrasonic bonding or Vacuum Soldering Technology the coat of metal seamless welding of the link interface in the 4th step together.
Accompanying drawing explanation
By following introduction, in conjunction with view, this characteristic feature of an invention and advantage can be understood more easily:
Fig. 1 (a)-Fig. 1 (c) is single polarization respectively and presents the three-dimensional view of generalized waveguide continuous gap joint array antenna employing drawing process structure, vertical view and A-A cutaway view;
Fig. 2 (a)-Fig. 2 (c) is the single polarization of another kind of version respectively and presents generalized waveguide continuous gap joint array antenna and adopt the three-dimensional view of drawing process structure, top view and A-A cutaway view;
Fig. 3 (a)-Fig. 3 (c) is single polarization respectively and presents the three-dimensional view of generalized waveguide continuous gap joint array antenna employing hierarchical process structure, vertical view and A-A cutaway view;
Fig. 4 (a)-Fig. 4 (c) is the top view of ground floor parts in Fig. 3 (a)-Fig. 3 (c), A-A cutaway view and lower view respectively;
Fig. 5 (a)-Fig. 5 (c) is the top view of second layer parts in Fig. 3 (a)-Fig. 3 (c), A-A cutaway view and lower view respectively;
Fig. 6 (a)-Fig. 6 (c) is the top view of third layer parts in Fig. 3 (a)-Fig. 3 (c), A-A cutaway view and lower view respectively;
Fig. 7 (a)-Fig. 7 (c) is the top view of the 4th layer of parts in Fig. 3 (a)-Fig. 3 (c), A-A cutaway view and lower view respectively;
Fig. 8 (a)-Fig. 8 (c) is dual polarization respectively and presents the three-dimensional view of generalized waveguide continuous gap joint array antenna employing hierarchical process structure, end view and top view;
Fig. 9 is the explosive view of Fig. 8 (a)-Fig. 8 (c) three-dimensional view;
Figure 10 (a)-Figure 10 (d) is the lower view of ground floor parts in Fig. 9, cutaway view and top view respectively;
Figure 11 (a)-Figure 11 (d) is the lower view of second layer parts in Fig. 9, cutaway view and top view respectively;
Figure 12 (a)-Figure 12 (d) is the lower view of third layer parts in Fig. 9, cutaway view and top view respectively;
Figure 13 (a)-Figure 13 (d) is the lower view of the 4th layer of parts in Fig. 9, cutaway view and top view respectively;
Figure 14 is generalized waveguide continuous gap joint radiating element schematic diagram.
Embodiment
Fig. 1 (a)-Fig. 1 (c) is single polarization and presents generalized waveguide continuous gap joint array antenna 70 to adopt the three-dimensional view of drawing process structure, vertical view and A-A cutaway view respectively, wherein concealed coat of metal part, what present is Filled Dielectrics part.The ultra broadband feeding network (first, second and third layer) be made up of multistage 1/4 wavelength step shape impedance converter and T-shaped branch, to the radiating curtain feed arranged side by side be made up of generalized waveguide continuous gap joint radiating element 61a ~ 61h, forms single polarization and also presents generalized waveguide continuous gap joint array antenna 70.The Filled Dielectrics part of array antenna 70 is stretched by the integrated mould of careful design or is extruded into, then metallization process or lamination process are done to this dielectric member surface, thus form the uniform coat of metal of one deck (concealing in figure) on this dielectric member surface, grinding technics is finally adopted to grind away excitation port surface 60i, spoke side oral thermometer face 60a ~ 60h and along the coat of metal on two end face 60j and 60k of array antenna 70 Width, the media fraction being in these positions is exposed in atmosphere, the metallic member of such dielectric member both sides just constitutes together with filled media part and presents generalized waveguide continuous gap joint array antenna 70.
Generalized waveguide continuous gap joint radiating element 11 as shown in figure 14, is a part for parallel-plate waveguide or transmission line.Radiating element 11 comprises dielectric structure and metal structure; Dielectric structure is divided into two parts, and to be Part I media 101 extend along the structure of radiating element direction of propagation of energy Part II medium 102, the DIELECTRIC CONSTANT ε of this two parts medium
rcan be the same or different; Metal structure is also divided into two parts, Part I metal conductor layer 120 covers the lower surface of Part I medium 101 and the sidewall of Part II medium 102, and Part II metal conductor layer 130 covers the upper surface of Part I medium 101 and the sidewall of Part II medium 102.Tangential gap joint unit 11 has the lateral projection 15 (inner filling Part II medium 102) of an emittance, and its end does not have metal to cover, and exposes in free space.Lateral projection 15 be one-level or some levels gradually opening plate waveguide cascade form (in this schematic diagram lateral projection 15 by level Four gradually opening plate waveguide cascade become, be referred to as level Four generalized waveguide continuous gap joint radiating element accordingly, progression can be arranged as required, wherein: the angle of spread of the first order gradually opening plate waveguide is α 1, and length is L1; The angle of spread of the second level gradually opening plate waveguide is α 2, and length is L2; The angle of spread of the third level gradually opening plate waveguide is α 3, and length is L3; The angle of spread of the fourth stage gradually opening plate waveguide is α 4, and length is L4), wherein can fill air and dielectric material ε
r, be distributed in certain one side of parallel-plate waveguide side.Encouraged by line source the incident wave waveguide mode propagated in the x-direction, this pattern is propagated in the x-direction in joint unit 11 inside, tangential gap further, and is radiated in free space and goes.Radiated electric field vector is the linear polarization in z direction, radiation field vector is the linear polarization in-y direction, definition according to radiatin pattern principal plane: direction of an electric field and the direction of propagation of energy at greatest irradiation direction place form E face, magnetic direction and the direction of propagation of energy at greatest irradiation direction place form H face, the E face of generalized waveguide continuous gap joint radiating element 11 is xoz planes, and H face is xoy plane.Utilize generalized waveguide continuous gap joint radiating element group battle array, the array antenna of microwave, millimeter wave and quasi-optics frequency range can be formed.
Generalized waveguide continuous gap joint only depends on the physical dimension of cross section from the coupling coefficient of parallel-plate waveguide coupling energy, and with the DIELECTRIC CONSTANT ε of operating frequency and medium
rirrelevant, therefore generalized waveguide continuous gap joint radiating element 11 inherently has broadband character, has robustness to the change of mechanical deformation and material parameter simultaneously.
The another kind distortion of generalized waveguide continuous gap joint radiating element 11, can develop into some sections of trapezoidal cascades by the cascade of some sections of fan rings, and the structure of generalized waveguide continuous gap joint radiating element can be made simpler, and processing cost is lower.
Fig. 2 (a)-Fig. 2 (c) is the single polarization of another kind of version respectively and presents generalized waveguide continuous gap joint array antenna 71 and adopt the three-dimensional view of drawing process structure, top view and A-A cutaway view, wherein concealed coat of metal part, what present is Filled Dielectrics part.Based on reason same in Fig. 1 (a)-Fig. 1 (c), need to adopt grinding technics to grind away the coat of metal on 62a, 62b, 62c and 62d surface, the media fraction being in these positions is exposed in atmosphere.Array antenna 71 and 70 structurally the most significant difference is: the continuous gap of generalized waveguide of array antenna 71 is saved between radiating element and formed as a whole by one section of reinforcement is interconnected, and this structure strengthens structural strength and the stability of array antenna 71 greatly.
Fig. 3 (a)-Fig. 3 (c) is single polarization and presents generalized waveguide continuous gap joint array antenna 72 to adopt the three-dimensional view of hierarchical process structure, vertical view and A-A cutaway view respectively.By 8 continuous gaps of generalized waveguide save cavity (that is: the air transmission medium) structure that radiating element 63d and the ultra broadband feeding network (first, second and third floor) that is made up of with T-shaped branch multistage 1/4 wavelength step shape impedance converter build and present the continuous gap of generalized waveguide and save the bottom-up longitudinally cutting of array antenna 72 and become four floor: ground floor comprises lower wall and the sidewall of the horizontal arm of excitation line source input port 63 and 1 No. two power divider 63a; The second layer comprises the upper wall of the horizontal arm of 1 No. two power divider 63a, 2 vertical waveguide save the horizontal arm of 64a and 2 No. two power divider 63b lower wall and sidewall; Third layer comprises the upper wall of the horizontal arm of 2 No. two power divider 63b, 4 vertical waveguide save the horizontal arm of 64b and 4 No. two power divider 63c lower wall and sidewall; 4th floor comprises upper wall, 8 vertical waveguide joint 64c and 8 generalized waveguide continuous gap joint radiating element 63d of the horizontal arm of 4 No. two power divider 63c.Every one deck utilizes conventional machine to add or mould molding technology, then utilizes ultrasonic bonding or Vacuum Soldering Technology, and the hierarchy these metal materials or outer surface being done the plastic material of metalized is assembled and welds together.Before welding, every one deck component all must ensure the detection having at least an open surface for external detection instrument, and every one deck all can cut out some unwanted parts to reduce weight.
Fig. 4 (a)-Fig. 7 (c) individually to show in Fig. 3 (a)-Fig. 3 (c) top view of first, second and third and four layers of parts, A-A cutaway view and lower view, therefrom clearly can understand the CONSTRUCTED SPECIFICATION of every one deck.
Fig. 8 (a)-Fig. 8 (c) is dual polarization and presents the three-dimensional view of generalized waveguide continuous gap joint array antenna 73, end view and top view, for clarity, has concealed coat of metal part, has only presented Filled Dielectrics part.In principle, it is by the single polarization shown in two Fig. 1 (a)-Fig. 1 (c) and presents generalized waveguide continuous gap joint array antenna 70 is mutually orthogonal forms, and the dual polarization of this structure is also presented generalized waveguide continuous gap joint array antenna 73 dielectric material must be adopted as waveguide medium.
Fig. 9 is the dual polarization shown in Fig. 8 (a)-Fig. 8 (c) and presents the explosive view that generalized waveguide continuous gap joint array antenna 73 adopts hierarchical process structure, for clarity, has concealed coat of metal part, has only presented Filled Dielectrics part.Fig. 9 clearly reflects dual polarization and presents the detailed forming process of generalized waveguide continuous gap joint array antenna 73, one is divided into five steps: the first step, be four layers the longitudinally cutting from top to bottom of the Filled Dielectrics part of double polarization array antenna 73, every one deck utilizes conventional machine to add or mould molding technology; Second step, exposes aerial all outer surfaces to every one deck dielectric member respectively and does metallization process or lamination process; 3rd step, employing grinding technics grinds away the coat of metal (80a, 80b, 81a, 81b of ground floor dielectric member on every one deck designated surface; 81a, 81b, 82a, 82b of second layer dielectric member; 82a, 82b, 83a, 83b of third layer dielectric member; 83a, 83b of 4th layer of dielectric member and downside); 4th step, (81a, 81b of ground floor are connected with 81a, 81b of the second layer respectively seamless for the respective surfaces of each dielectric member layer link to utilize Plastic Welding or adhesive technology, 82a, 82b of the second layer are connected with 82a, 82b of third layer respectively, 83a, 83b of third layer are connected with 83a, 83b of the 4th layer respectively), the downside of 80a, 80b of ground floor and the 4th layer exposes in atmosphere as excitation port and radiating aperture respectively; 5th step, utilizes ultrasonic bonding or Vacuum Soldering Technology the coat of metal seamless welding of the link interface in the 4th step together.
Figure 10 (a)-Figure 13 (d) individually to show in Fig. 9 the lower view of first, second and third and four layers of parts, cutaway view and top view, therefrom clearly can understand the CONSTRUCTED SPECIFICATION of every one deck.
Claims (14)
1. and present the radiating element of array antenna, comprise dielectric structure and metal structure; Dielectric structure is divided into two parts, and to be Part I medium extend along the structure of radiating element direction of propagation of energy Part II medium; Metal structure is also divided into two parts, Part I metal conductor layer covers the lower surface of Part I medium, Part II metal conductor layer covers the upper surface of Part I medium and the sidewall of Part II medium, it is characterized in that, the cross section of the Part II medium of described radiating element is gradual change type, described Part II medium has the step of more than one-level, the cross section of step more than described one-level be some sections with certain subtended angle launch fan-shaped; Be arc lateral projection outside the Part II medium of described step; Connected by reinforcement between described Part II medium or lateral projection; Relative two sidewalls of Part I medium, Part II medium, Part I metal conductor layer and Part II metal conductor layer are truncated, and form the tangential gap joint unit of finite width.
2. as claimed in claim 1 and present the radiating element of array antenna, it is characterized in that, the lateral dimension of Part II medium is identical with the lateral dimension of whole dielectric structure.
3. as claimed in claim 1 and present the radiating element of array antenna, it is characterized in that, media fraction is the medium of air or multilayer differing dielectric constant.
4. as claimed in claim 1 and present the radiating element of array antenna, it is characterized in that, dielectric structure also comprises Part III medium and Part IV medium, Part III medium and the orthogonal placement of Part I medium; Part IV medium and the orthogonal placement of Part II medium.
5. as claimed in claim 1 and present the radiating element of array antenna, it is characterized in that, the sidewall covering metal of described Part I medium, Part II medium, the sidewall covering metal of Part I metal conductor layer, Part II metal conductor layer; Or the sidewall of Part I medium, Part II medium covers nonmetal, the sidewall of Part I metal conductor layer, Part II metal conductor layer covers nonmetal; Or the sidewall of Part I medium, Part II medium covers absorbing material, the sidewall of Part I metal conductor layer, Part II metal conductor layer covers absorbing material.
6. as claimed in claim 1 and present the radiating element of array antenna, it is characterized in that, described Part I medium has the step of more than one-level.
7. as claimed in claim 1 and present the radiating element of array antenna, it is characterized in that, the projection that the Part II medium that dielectric structure comprises is formed is the extension of Part I medium along radiating element direction of propagation of energy, isolates mutually, be arranged in radiating curtain at a certain distance between projection.
8. as claimed in claim 7 and present the radiating element of array antenna, it is characterized in that, the height of tangential gap joint unit is less than the longitudinal size of radiating curtain.
9. as claimed in claim 7 and present the radiating element of array antenna, it is characterized in that, the cover metal portions between the joint unit of adjacent tangential gap forms a transverse metal groove.
10. as claimed in claim 7 and present the radiating element of array antenna, it is characterized in that, each tangential gap joint is consistent in cross sectional dimensions and medium parameter.
11. and present array antenna, it is characterized in that, comprise some radiating elements as described in claim 1-3 and 5-10 any one, some radiating elements are arranged in radiating curtain, via feeding network feed arranged side by side, form and present array antenna.
12. is as claimed in claim 11 and present the processing molding method of array antenna, it is characterized in that, comprising:
Step 1, adopts stretching or extrusion die forming technique process and present the dielectric structure of array antenna; The cross section of the Part II medium of the described radiating element made is gradual change type, and described Part II medium has the step of more than one-level, the cross section of step more than described one-level be some sections with certain subtended angle launch fan-shaped; Be arc lateral projection outside the Part II medium of described step; Connected by reinforcement between described Part II medium or lateral projection;
Step 2, does metallization process or lamination process to the surface of the dielectric structure obtained;
Step 3, remove excitation port surface (60j), Part II medium end surface (60a ~ 60h) and and the coat of metal presented on two end faces (60j, 60k) of array antenna Width;
Or the method comprises:
Step 10, inciting somebody to action and presenting array antenna longitudinally cutting is from top to bottom some layers, utilizes machining or mould molding technology to process every one deck respectively;
Step 20, seamless welding is together in order for the hierarchy these metal materials or appearance being done the plastic material of metalized.
13. 1 kinds of dual polarizations also present array antenna, it is characterized in that, by according to claim 11 and present that array antenna is orthogonal to be formed.
14. dual polarizations as claimed in claim 13 also present the processing molding method of array antenna, it is characterized in that, comprising:
Step 100, the Filled Dielectrics part longitudinally cutting from top to bottom of double polarization array antenna is some layers, and every one deck utilizes machining or the machine-shaping of mould molding technology;
Step 200, exposes aerial all outer surfaces to every one deck dielectric member respectively and does metallization process or lamination process;
Step 300, removes the coat of metal on every one deck designated surface;
Step 400, with Plastic Welding or adhesive technology seamless for the respective surfaces of each dielectric member layer link, ensures excitation port surface and the exposure of radiating aperture surface in atmosphere simultaneously;
Step 500, utilizes ultrasonic bonding or Vacuum Soldering Technology by the coat of metal seamless welding at the linkage interface place in step 400 together.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0536522A2 (en) * | 1991-08-29 | 1993-04-14 | Hughes Aircraft Company | Continuous traverse stub element devices and method for making same |
| CN101584080A (en) * | 2006-11-17 | 2009-11-18 | 韦夫班德尔公司 | Integrated waveguide antenna array |
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| US5995055A (en) * | 1997-06-30 | 1999-11-30 | Raytheon Company | Planar antenna radiating structure having quasi-scan, frequency-independent driving-point impedance |
| CN101807742B (en) * | 2010-03-19 | 2012-09-26 | 西安空间无线电技术研究所 | Bicircular polarized broad-band antenna radiating element used for large-angle scanning phased array |
| CN202205886U (en) * | 2011-04-29 | 2012-04-25 | 刘建江 | Radiating element of shunt-feed array antenna and shunt-feed array antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0536522A2 (en) * | 1991-08-29 | 1993-04-14 | Hughes Aircraft Company | Continuous traverse stub element devices and method for making same |
| CN101584080A (en) * | 2006-11-17 | 2009-11-18 | 韦夫班德尔公司 | Integrated waveguide antenna array |
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