EP2721690A1 - Patch radiator - Google Patents
Patch radiatorInfo
- Publication number
- EP2721690A1 EP2721690A1 EP12778953.5A EP12778953A EP2721690A1 EP 2721690 A1 EP2721690 A1 EP 2721690A1 EP 12778953 A EP12778953 A EP 12778953A EP 2721690 A1 EP2721690 A1 EP 2721690A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- patch antenna
- radiator
- substrate
- antenna according
- radiator surface
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
-
- 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
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0414—Substantially flat resonant element parallel to ground plane, e.g. patch antenna in a stacked or folded configuration
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0428—Substantially flat resonant element parallel to ground plane, e.g. patch antenna radiating a circular polarised wave
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0442—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular tuning means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0464—Annular ring patch
Definitions
- the invention relates to a patch radiator according to the preamble of claim 1 according to the main patent DE 10 2011 117 690.3.
- Patch radiators are basically well known, for example from DE 10 2004 016 158 AI.
- Such patch emitters are known to comprise a dielectric substrate having an upper side, a lower side and circumferential wall sections, that is to say side surfaces. It is so far a three-dimensional body, which is square shaped in most applications in plan view. In this case, a closed, also square radiator surface is formed on the upper side, which is fed via a feed line extending perpendicularly thereto through the entire substrate and supplied from the underside.
- ground surface On the underside, there is also a ground surface, which possibly also protrudes over the outer contour of the substrate. seen, wherein the ground surface is provided with a corresponding hole-shaped recess through which the said feed line extends to the bottom of the ground plane through which the supply of the radiator surface is effected.
- Patch emitters are often used as circularly polarized emitters and antenna devices.
- the surface area which is generally square in design is square provided with in the corner areas incorporated discontinuities, so-called chamfers. They represent themselves as, for example, at two opposite corners incorporated triangular flats or recesses, over which the circularity of the patch antenna is formed.
- Such circula polarized patch antennas are often used - as mentioned as GPS antennas, above all also in motor vehicle antennas, in addition to a number of other antenna devices, for example for the implementation of mobile services, receiving radio programs, etc ..
- a generic patch emitter has become known for example from US 2011/0 148 715 AI. It comprises a square substrate (dielectric), on the upper side of which an electrically conductive emitter surface is formed.
- the radiator surface is provided centrally with an annular recess. The radiator surface is fed via a feed line running past the dielectric at the outer edge of the radiator surface.
- Patch emitters which have different geometries, are also known from WO 2006/036 116 AI as known. These are predominantly square or the square shape of approximated radiator surfaces, which are provided in the interior with variously shaped recesses, for example in an H-shape, in a double-trapezoidal shape, etc .. Is fed via a feed line from the outer Peripheral edge of the radiator surface as well as offset from the inner boundary edge of the recess incorporated in the radiator surface.
- US 2011/0 012 788 A1 describes a circularly polarized patch radiator arrangement which does not have a ring-shaped and / or frame-shaped radiator surface, but instead has a square radiator surface of the basic construction, which is provided with a large number of slots.
- a slot extends from the outer corner of the radiator surface in the direction of the center.
- slot-shaped recesses are incorporated on the longitudinal sides, which lead to larger recesses lying offset to it.
- this is a folded patch antenna with slots, which serves to reduce the antenna size.
- the circularity is accomplished as in a patch antenna by the mentioned discontinuities on the outer contour. Through the mentioned slots, the patch antenna but overall very narrowband.
- WO 02/063 714 A1 shows so-called fractal antennas.
- These fractal antenna structures can have a closed radiator surface. It is also shown that the fractal structure can be formed not only on the outer circumference of the patch antenna, but also in a central recess area.
- the object of the present invention is to provide a patch antenna and in particular a circularly polarized antenna. Siert patch antenna to create, based on their broadband to have the lowest possible antenna volume.
- the object is achieved according to the features specified in claim 1.
- Advantageous embodiments of the invention are specified in the subclaims. It must be described as quite surprising that in the context of the present invention it has become possible to reduce the required antenna volume of the patch antenna according to the invention over conventional standard patch solutions by up to 50% (or even more). Conversely, with a constant size of the patch antenna according to the invention (compared to a conventional standard patch antenna), the broadband of the antenna increased by about 50% and thus significantly improved.
- the outer side or wall surfaces of the support body, so the substrate are also used for the design of the antenna.
- the radiator structure located on the substrate top side is widened in the form of a ring-shaped or frame-shaped radiator onto the side or outer surfaces of the three-dimensional substrate, as a result of which the volume of the carrier body can be optimally utilized.
- a specific feed structure is provided in the interior of the ring-shaped or frame-shaped radiator structure on the top side of the substrate, with which the antenna is used as circular waveguide. polarized antenna can be operated.
- the radiator surface located on the upper side of the substrate is designed to be ring-shaped and / or frame-shaped in principle, to form a recess region surrounding this annular and / or frame-shaped radiator surface structure.
- annular radiator structure is understood to mean any circumferential or frame-shaped radiator structure, that is to say also structures which do not necessarily have to be circular in plan view, but can also form, for example, a square or regular n-polygonal frame etc.
- the additionally provided extension of the radiation design from the substrate upper side to the side walls, that is to say the side surfaces of the substrate, may be different Be realized and structured way.
- the radiator structure provided on the side or wall surfaces of the substrate comprises a plurality of radiating sections extending from top to bottom and offset in the circumferential direction of the side or wall surfaces. These radiation sections formed or extending from top to bottom on the side walls are electrically-galvanically connected to the radiation surface located on the upper side of the substrate.
- the radiation surface located on the upper side of the substrate on the peripheral side walls of the substrate down in the direction of the ground surface extending, for example finger-shaped radiation sections, which are arranged spaced apart in the circumferential direction of the substrate by interposed electrically non-electrically conductive portions ,
- finger-shaped radiation sections connected to the radiator surface provided on the upper side of the substrate and extending downwards preferably extend in a partial height of the substrate and thus in a partial height of the side walls.
- the mentioned side radiating surface sections which merge into the emitter surface located on the top side of the patch antenna, can have a very wide variety of shapes.
- the electrically conductive sections extending from top to bottom can be strip-shaped when viewed from the side, and to be formed, for example, by strip-shaped electrically non-conductive sections. sections are spaced from each other. This results in a meandering or similar rectangular structure. Also possible is a wave-shaped circumferential structure, whereby downwardly projecting, mountain-shaped elevations or projections and formed therebetween above valleys are formed. These structures can also be viewed from the side but also for example. be triangular, trapezoidal, etc. There are no restrictions in this respect.
- An essential reason for the compact design of the antenna according to the invention lies in the utilization of the outer surfaces of the support body, so the dielectric or the substrate. Because the emitter surface of the patch antenna is quasi expanded from the top of the substrate in the direction of the circumferential side surfaces out and thereby increased. How this expansion is done and structured can be done in a variety of ways.
- the broadband capability of the patch antenna according to the invention is also markedly improved over conventional solutions, namely by the formation of a multiplicity of additional side radiation surface sections through which a boundary line for the electrically conductive radiator structure is formed whose circumferential length is significantly larger than the actual circumferential length of the structure of the substrate.
- this also makes the vertically polarized portion of the electromagnetic field (terrestrial gain) because the side-radiating surface portions (hereinafter also partially referred to as finger-shaped portions) communicating with the radiating surface and extending sideways are comb-like, or may be, these protruding portions then being like small vertical radiating elements act.
- the patch antenna can also be reduced in size compared to conventional patch antennas, and this with simultaneously improved broadband.
- the side-surface radiator structure emanating from the radiator surface is in the form of a metallization, which is formed or provided directly on the side surfaces or sidewalls of the substrate.
- this side surface radiator structure it is also possible to provide and position this side surface radiator structure at a distance from the side surfaces or side walls of the substrate, for example by using a separate support structure for this side surface radiator structure or preferably a side surface radiator structure in the form of a metal sheet or the like becomes.
- the entire radiator is formed from such a metal sheet and can be positioned, for example, on the top of the substrate or, for example, glued or pressed.
- This side surface radiator structure can then over the Edge over or over the side walls or side surfaces in the distance and even protrude in contrast to the optionally perpendicularly extending side surface portions angled to be angled at the lower end opposite to the radiator surface etc .. Varied modification are possible here. For example, with multiple outwardly different extent protruding folded or curved or folded side surface radiator structure sections. In this case, even the feed line punched out of the metal sheet and be angled perpendicular to the radiator surface down through the substrate, whereby manufacturing advantages can be realized.
- feed structures of the most varied design and provided with very different geometries can be used, which are based on the principle of galvanic or else on the principle of a capacitive feed.
- the antenna provided with a ring or frame structure according to the invention thus has the following advantages:
- the antenna according to the invention can be the Dimension of the support body, so reduce the substrate (miniaturization of the antennas).
- plastics can be used. Plastic materials are generally cheaper than ceramic materials. This leads to a desired cost reduction and cost savings.
- plastics offer a further advantage insofar as they have good electrical properties with a low loss factor.
- plastics with these properties can be used. This can improve the performance, the bandwidth and the gain of the antenna according to the invention, whereby a significant increase in performance can be achieved.
- the antenna according to the invention is overall easy to handle despite the reduced dimensions.
- the frequency can be easily adjusted by machining the outer surfaces, for example, by shortening the outer surfaces or introducing slits extending from the outside into the radiator surface. Overall, this leads to good handling.
- the substrate at least partially box-shaped, namely to form one from below accessible interior.
- This interior space can be dimensioned so large that there may be provided, for example, a printed circuit board with corresponding electrical or electronic components, in any height of the free space thus formed.
- a very compact patch antenna arrangement can be provided that, within the illustrated patch arrangement, i. from this over- and / or encompassing another preferably the ground plane closer patch antenna is provided.
- This further patch antenna can be designed as a simply polarized patch antenna, as a full-surface metallized patch surface or, for example, as a dual or circularly polarized patch antenna.
- the inner or lower lying further patch antenna is designed as a GPS receiving antenna, ie with a generally full-surface radiating surface, which is arranged on a dielectric made of ceramic, is the first located above ring-shaped or frame-shaped Patch antenna designed so that it is used, for example, to receive the SDARS signals.
- the inner patch antenna is also ring or rahmenför- mig and thereby fed via internal phase shifter lines, thereby creating a circularly polarized patch antenna ring as the explained patch antenna according to the invention and / or has a frame-shaped design, ie has a ring-shaped and / or frame-shaped radiator surface, in the recessed region of which the phase shifters lead to two different feed points are provided over which a separate feed line and the two branching phase shift lines then the feeding of this second patch antenna can be done.
- two annular patch antennas are interleaved, making it possible to cover two services with relatively small size.
- the deep or inner ring or frame-shaped radiator surface of the inner patch antenna serves, for example, to receive SDARS signals, whereas the outer or upper patch antenna with an outer or higher radiator surface, for example, for receiving GPS signals. Due to the mutual coupling between the antennas, a minimization of the antenna structure is additionally achieved.
- the antenna carrier may preferably consist of plastic and the mentioned radiator surfaces of the antenna structures, for example, from stamped and / or folded sheets.
- the antenna structure can also be manufactured, for example, with the aid of 3D-MID technology, that is to say consist of three-dimensional electrical assemblies (Molded Interconnect Devices - MID).
- this second patch antenna may likewise preferably be provided on its outer circumference with electrically conductive extensions extending transversely to the radiator surface, for example in the region of the side walls of a carrier structure for this radiator surface.
- the antenna can be used for example in such a way that the outer ring or frame a patch-shaped antenna, for example, receives as an antenna for receiving from a Global Navigation Satellite System (GNSS), radiated signals, such as GPS signals, whereas the lower and / or inner ring or frame-shaped antenna, for example, are used to receive SDARS signals can.
- GNSS Global Navigation Satellite System
- both stacked patch emitters may be formed the same or similar in structure, wherein usually provided on the circumferential sides and extending transversely to the radiator surface, for example, zigzag or meander-shaped extensions of the second Patchstrahler Structure in their Height are dimensioned smaller than the corresponding extensions to the upper patch radiator.
- FIG. 1 shows a schematic three-dimensional representation of a patch antenna according to the invention
- Figure 2 is a vertical sectional view parallel to a side wall of the patch antenna shown in Figure 1;
- FIG. 2a a corresponding illustration to FIG. 2, in which it is illustrated that the ground surface is formed on the upper side of a printed circuit board and the feed line for the patch antenna is formed by a recess in FIG the ground plane and a hole in the printed circuit board may be led to the printed circuit board underside, where it is electrically connected;
- Figures 4 are schematic side views of the to 3d side walls of the substrate with the different radiation structure formed thereon;
- FIG. 4 shows a schematic representation of an equivalent circuit diagram of the patch antenna according to the invention.
- FIGS. 5a to 8 show different representations of a feed structure for the circularly polarized patch antenna according to the invention which is up to 5j;
- FIG. 6 shows a modified exemplary embodiment of a patch antenna with a cylindrical substrate and an annular radiator surface located thereon;
- FIG. 7 an embodiment modified from FIG. 1 with a modified, doubled feed structure;
- FIG. 8 shows an equivalent circuit diagram for the exemplary embodiment according to FIG. 7;
- FIG. 9 shows a cross-sectional view modified by FIG Patch antenna with on the central axis 7 in the beam direction facing side surfaces
- FIG. 10 an embodiment modified from FIG. 9, in which the side surfaces of the substrate are directed away from the central axis 7 in the beam direction;
- FIG. 11 an embodiment modified to FIGS. 1 and 2 in a vertical cross-sectional view comparable to FIG. 2, in which the side surface radiator structure is at a distance from the surface of the surface
- FIG. 12 a modification of FIG. 11 again
- FIG. 13 shows a further modification to FIGS. 11 and 12 in a simplified vertical cross section
- FIG. 14 shows a three-dimensional representation of an exemplary embodiment with a radiator structure consisting of a metal sheet;
- Figure 15 a cross-sectional view through the
- FIG. 16 a spatial sectional representation of a further modified embodiment with a box-shaped cavity surrounded within the substrate; a cross-sectional view with integrated in the cavity printed circuit board in a middle height; a modification of Figure 17, wherein a printed circuit board is arranged with electronic components on the upper side of the underside of the support wall of the substrate; a perspective view of another embodiment of a patch antenna assembly with two stacked in one another or stacked patch antennas; a corresponding representation of the exemplary embodiment from ⁇ 19 in exploded view; a plan view of the embodiment of Figure 19; a vertical sectional view perpendicular to the radiator surfaces along the line AA in Figure 21; a vertical sectional view perpendicular to the radiator surfaces along the line BB in Figure 21; Figure 24 is a perspective bottom view of the embodiment of Figures 19 to 23; FIG. 25: a resonance diagram of the formed patch
- FIG. 26 an embodiment modified from FIG. 20 with a full-area second patch antenna in a spatial representation
- Figure 27 a cross-sectional view through the
- FIG. 28 shows a further modified exemplary embodiment with a three-dimensional outer patch antenna and a two-dimensional inner patch antenna underneath in a three-dimensional representation
- FIG. 29 shows the patch antenna arrangement shown in FIG. 28 in an exploded view.
- a patch antenna 1 is shown from its basic structure, in a schematic three-dimensional representation.
- It is preferably a circularly polarized patch antenna.
- the patch antenna comprises a dielectric trical body 3, which is sometimes referred to below as a substrate.
- This three-dimensional substrate comprises an upper side 3a, a lower side 3b, and peripheral side walls 3c, which are also sometimes referred to below as side surfaces 3c.
- side walls or side surfaces 3c are aligned in the embodiment shown perpendicular to the top or bottom 3a, 3b of the substrate and thus parallel to the central axis 7, which passes through the top and bottom of the substrate vertically and centrally.
- sidewall space S is also sometimes used below, since, as will be seen later, the further structure structure is no longer directly on the surface of the sidewalls 3c, but also in the Distance can be provided.
- the substrate may be made of a suitable material.
- ceramic with a comparatively low value for the permittivity that is to say the dielectric conductivity ⁇ ⁇
- This also makes it possible to use as a substrate not only mandatory ceramic, but also preferably plastic, for example, especially when the patch antenna for receiving programs broadcast via SDARS (especially in North America) or to receive via GPS radiated Position data should serve. This minimizes losses.
- the values of ⁇ ⁇ may preferably vary between 2 to 20.
- an electrically conductive radiating surface 11 is formed on the upper side 3a of the substrate (or generally above the upper side 3a), for example in the form of a metallization provided on the upper side 3a. If the metallization is designed in the form of a metal sheet, then this can be glued or pressed on the top of the substrate, for example, whereby a good fixation can be achieved.
- the radiator surface 11 is not formed as a closed emitter surface, but designed ring- or compassionför- mig, ie in the form of a circumferential (closed) emitter surface forming at least one of the circumferential closed emitter surface 11 surrounding recess 13, within which a subsequent, yet discussed in more detail feed structure 15 is provided for the radiator surface 11.
- the ring and / or frame-shaped radiator surface 11 is formed so that it is arranged circumferentially around a patch antenna generally centrally passing through the central axis 7, in a plane which is oriented perpendicular to the central axis 7 in the rule is.
- a - mass surface 17 is formed, which may also be provided in the form of a metallization.
- the ground surface 17 is dimensioned larger in the longitudinal and transverse directions than the longitudinal and transverse directions of the substrate, so that the ground surface 17 projects beyond the side walls 3c of the substrate.
- the ground surface can consist of a metal sheet. It is also possible that the ground surface 17 is also formed as a metallization, which is preferably provided on the upper side facing the patch antenna 1, wherein the patch antenna 1 then with the bottom of its substrate on this formed on the printed circuit board LP metallization positioned, for example, can be glued ⁇ .
- ground plane 17 can thereby also be a structural part on which the previously-described patch antenna is placed without a separate own ground plane, for example in that the patch antenna positioned with its substrate on the body sheet of a motor vehicle, is glued at ⁇ play.
- the patch antenna 1 according to the invention is likewise provided on its circumferential side walls or side surfaces 3c with a side surface radiator structure 18 which electrically with the radiator surface 11 on the top side 3a of the substrate 3 is galvanically connected, in the embodiment shown in this emitter surface 11 passes.
- the side surface emitter structure 18 consists of a multiplicity of side emitter surface sections 19 which, with their ends 19a facing the emitter surface 11, are electrically-galvanically connected to the emitter surface 11 or merge into the emitter surface 11.
- the opposite end 19a thus runs away from the radiator surface 11 in the direction of the ground surface 17 and ends at a distance therefrom free, that is generally without galvanic contacting with the asseflache 17.
- electrically non-conductive recessed regions 20 are formed between two adjacent side radiator surface sections 19, which extend at least in a partial height of the respective side wall 3c.
- an overall radiator surface or overall radiator structure 25 is created, which includes both the radiator surface 11 located on the upper side 3a of the substrate 3 and the additional side surface radiator structure 18 with the associated plurality of side radiator surface sections located on the side walls or side surfaces 3c 19 includes.
- the total area for the radiator structure can thus be increased, without the dimensions of the patch antenna having to be increased.
- not only the entire radiator surface is enlarged by this extension on the side walls, but also increases the entire boundary or outline 23, which surrounds the total radiator surface and is defined by the boundary line, the side radiator surface portions 19 of the recess areas 20 separates.
- the exemplary embodiment described so far shows that the side surface radiator structure 18 is provided directly on the surface of the circumferential side surfaces or side walls 3c of the substrate, which is particularly suitable if the corresponding overall radiator structure is in the form of a metallized surface on the corresponding surface areas. is formed, whereby thus the overhead radiator surface 11 and provided in the circumferential area side emitter surface portion 19 are formed.
- the side radiator surface section 19 can also be provided at a lateral distance from the respective surface of the side walls 3 a, for example if, for example, one laterally projecting support structure over the side walls is used, which, for example, according to Art a downwardly open box is placed on the substrate, so that circumferentially comparatively thin flange portions are formed which are spaced from the mentioned side walls 3c of the substrate, so that on these flange portions, the mentioned side surface radiator structure 18 may be formed.
- the entire radiator structure made of a metal sheet, folded, bent, etc., so that the radiator surface 11 lying on top of the substrate merges into a side surface radiator structure 18 whose side radiator surface portion 19 at a distance from the surface of the Side walls 3c come to rest. Therefore, it is generally also said that the side-radiating surface sections 19 are not formed directly on the side surfaces or side walls 3c of the substrate but are provided in the side surface or side wall region S, that is, at a distance from the side surfaces or side walls 3c are located. Therefore, as already mentioned, part of the side surface space S spoken, in which the side surface radiator structure 18 is provided and / or formed. This will be explained later with reference to further embodiments.
- FIG. 1 In the embodiment shown in FIG 1 extend the side-emitter surface portions 19 in a partial height 19 'of the total height H of the substrate 3, so end at a distance 27 in front of the bottom 3b of the substrate.
- the recessed areas 20 extend between two side radiating surface sections 19 at a partial height 20 'of the substrate 3 and terminate at a distance 29 below the upper surface 3a of the substrate 3.
- FIG. 2 shows a cross-sectional view in which on the left side the patch Antenna which cuts through a downwardly extending side radiating surface section 19, namely at a partial height 19 'starting from the upper radiating surface 11, whereas on the right side of the sectional view a section is reproduced, which extends through a recess region 20, which extends in a partial height 20 'from the ground surface 17 upwards, so that the recess region terminates at a distance 29 in front of the upper side 3 a of the substrate 3.
- the side radiator surface sections 19 are connected to one another on their side facing the radiator surface 11, as it were, via an electrically conductive strip 29 on the side wall 3c.
- the electrically nonconductive recess portions 20 are interconnected via a lower strip 33 in front of which the downwardly projecting portion of the side radiator surface portions 19 terminates.
- An overlapping region 35 therefore results in the exemplary embodiment shown with a partial height 35a in which the electrically conductive side radiator surface area Sections 19 and the recessed areas 20 are formed adjacent to each other.
- the height 20 'of these recess regions 20, such as the height 19' of the side radiator sections 19 and the height 35 'of the overlapping region 35, can be selected differently within wide ranges. They can extend over the entire height of the side walls or only over a partial height. There are no restrictions in this respect.
- the heights and partial heights for the side radiating surface sections 19 and the recess regions 20 can also be dimensioned differently at different locations, so that the remaining sections 27, 29, 31, 33 can also have different values at different points of the circumferential side wall 3c .
- the slot-shaped recesses 20 thus formed may also extend to the top side 3 a of the substrate 3, just as the height or length of the side radiator surface sections 19 may reach at least almost to the plane of the ac surface 17.
- the width of the multiplicity of side radiator surface sections 19, as well as the width of the recess regions 20, can be chosen arbitrarily within wide ranges. These widths may also vary in a single embodiment. The smaller the widths, the larger and thus the longer the boundary / contour line 23.
- preferably 4 to 16 side radiator sections 19 and thus also recessed areas 20 can be arranged successively, ie side by side, on the entire peripheral surface 3c or in the side surface space S.
- Preferred numbers can be between 10 to 50 or 20 to 40 are. There are no real restrictions, with a higher number as mentioned leading to an enlargement of the boundary / contour line 23, which is advantageous. Therefore, the above values are to be understood as exemplary only, ie without limitation.
- the shapes for the sostrahler schizophrenia- sections 19 and the recessed areas 20 can be chosen differently.
- the description of the structure of the patch antenna according to the invention shows that the main reason for the compact design of the antenna is the utilization of the outer side surfaces or side walls 3c of the carrier body 3. Because the radiator surface 11 located on the upper side 3a of the substrate thus merges into radiator surface sections on the side walls 3c, whereby the total radiator surface is increased.
- the vertically polarized component of the electromagnetic field is amplified by the patch antenna explained, since a comb-like side surface radiator structure 18 is created by the finger-shaped side radiator surface sections 19 in the exemplary embodiment shown, in which the side radiator surface sections 19 act as small vertical radiator elements.
- side surface radiator structure 18 is designed with rectangular side radiator surface portions 19 and intermediate rectangular recessed areas, so a meander-shaped structure, that is to say a meander-shaped delimiting and / or contour line 23, over which the rectangular side radiator surface sections 19 are separated from the recessed areas 20 offset in the circumferential direction.
- FIG. 3b shows only schematically that the sections 19 and the recess sections 20 belonging to the total radiator surface 25 can also be separated from one another by a wave structure, that is to say by a wavy delimiting or contour line 23 (this wavy line can be sinusoidal - or cosine-shaped, or follow another waveform). It is shown with reference to FIG. 3c that the boundary line 23 between the two sections can also be designed zigzag-shaped.
- boundary line 23 can in principle take any form, for example also be able to follow a fractal structure.
- FIG. 3d shows that the side radiator surface sections 19 and / or the recess regions 20 located therebetween may have a fractal structure, so that a boundary / contour line 23 following between these sections is created between the sections 19 and the recessed regions 20 ,
- the design options for the side emitter surface portions 19 and the recessed areas 20 are varied and unlimited. It is apparent from the drawings, which are shown by way of example only, that the side-surface radiator structure 18 can have a multiplicity of side radiator surface sections 19 and / or electrically nonconductive recess regions 20, which extend from the radiator surface 11 in the direction of the ground surface 17.
- boundary and contour line 23 is larger by this configuration, that is greater than the pure circumference of the substrate 3 over its side walls away.
- the illustrated embodiment thus shows that the ring-shaped or radiator-shaped radiator surface 11 can ultimately be extended to the outer surfaces of the substrate 3, that is to the circumferential side or wall surfaces 3c, whereby the volume of the substrate 3 is optimally utilized.
- the total radiator area 25 can be increased without increasing the volume.
- the additionally selected recesses or slots 20 between two corresponding in the direction of ground surface 17 projecting side emitter surface sections 19 ultimately the scope of the ring or frame-shaped overall Strahlerstruk- tur especially the entire length of the boundary and outline 23 can be further increased so that the volume material of the substrate can be reduced by up to 50% and / or the bandwidth can be increased by up to 50%.
- the compact design of the antenna according to the invention is achieved not only by utilizing the outer side surface 3c of the support body. Pers or substrates 3 can be improved, but in general the enlargement of the overall radiator structure can be done by a variety of measures and geometries on the side surfaces or side walls 3c.
- the vertically polarized portion of the electromagnetic field can be amplified, since the finger-like side radiator surfaces 19 in their entirety act comb-like, ie small vertical radiator elements act.
- the feed structure 15 consists of a quarter-circle circumferential strip 51, the feed point 53 being shown off-center here, at which the antenna feed line 42 (inner conductor) ends, which has a corresponding bore 3d in the substrate 3 as well a corresponding hole 17 a in the ground surface 17 passes through.
- the feed line 42 can be the extension of an inner conductor 43 'of a coaxial feed line 43 whose outer conductor 43 "is electrically-galvanically connected to the ground plane 17.
- the aforementioned quarter-circle circumferential strip 51 generally represents a phase shifter device in the form of a phase shifter
- the embodiment is preferably such that the patch antenna described and shown is positioned and connected on a printed circuit board LP, on whose upper side (ie the lower side 3b of the substrate 3). lying facing a metallized surface is provided or formed, which acts as a ground surface 17. Therefore, the ground surface 17 shown in Figure 1 can be provided as a ent ⁇ metallized metallized surface on the top of an even larger sized printed circuit board.
- this metallized surface is provided with a recess in the region of which the printed circuit board is provided with a bore through which the feed line 42 is led to the underside of the printed circuit board where it is electrically connected, in particular soldered.
- the corresponding hole in the printed circuit board can also be formed as a through-hole, it being merely necessary to ensure that no connection to the ground surface is produced here. In this case, there is no coaxial connection cable.
- FIG. 2a a representation corresponding to FIG. 2 is reproduced to this extent, in which the printed circuit board LP is also shown.
- the desired circularity is not generated via Discontunticianen (chamfers) on the illustrated feed point 53 in deviation from standard patch antennas, but by the generated phase shifter line 47th.
- the circumference of the annular and / or frame-shaped overall radiator surface 25 can be further increased, whereby the volume of the carrier material - as already mentioned - can be reduced by up to 50%.
- FIG. 4 is also an equivalent circuit diagram in addition, which indicates the ring-shaped or frame-shaped structure of the total emitter surface 25, wherein the ring-shaped or emitter-shaped emitter structure formed by the side emitter surface sections 19 and the recessed regions 20 formed alternately on the side walls 3c results in a ring-shaped emitter structure alternately successive series inductances 39 and series capacitances 41 are defined.
- a patch antenna constructed in accordance with the invention can be appropriately dimensioned by selecting suitable materials.
- the patch antenna may be defined by the following materials and measures:
- Width of the side radiating surface sections 19 2 mm distance central axis 7 to the feed point 53: 4 mm
- these deviations can have a multiple value, in particular upwards (restrictions do not basically exist in this respect).
- the values for ⁇ ⁇ may preferably be between 2 and 20.
- values are particularly suitable for ⁇ ⁇ which lie between 2 and 10 and the substrate or the patch antenna and thus the surrounding radiator surface have one dimension from 15mm x 15mm to 30mm x 30mm.
- a substrate with a material which preferably has values for ⁇ ⁇ between 10 and 20 can be used.
- FIGS. 5a to 5h Different feeding structures 15 are now shown in a schematic plan view on the basis of the following FIGS. 5a to 5h, as they can be used, for example, for the patch antenna (1) shown in FIG. 1 (in plan view).
- the feed structure 15 is reproduced schematically, as can also be seen in the exemplary embodiment according to FIG.
- modifications are shown for this purpose, all of which only make it clear that many other structures are likewise possible.
- a 270 ° enclosing, electrically conductive feed ring is selected as the phase shifter line 47, the coupling lines 47 ', 47 "ultimately leaving the feed point 53 at two contact points 48 offset by 90 ° on the inside IIa of the ring-shaped or frame-shaped radiator surface
- the feed takes place from the feed point 53 (which is centrally located and through which the central axis 7 extends) via a first common radial feed leg 57, which then passes from one to the branch point 57 '. in the two mentioned in opposite directions the coupling lines 47 passes.
- FIG. 5e a more complex structure is shown, with branched-in coupling lines 47 ', 47 ", wherein from the feed point 53, the two coupling lines 47', 47” in a known manner via a plurality of bends to the connection points 48 on the inside IIa of the radiator surface 11 lead.
- the connecting points ' 48 Via two connecting sections 47a, 47b, which are additionally perpendicular to one another, the connecting points ' 48 are again galvanically connected to one another, as can be seen directly from FIG. 5e.
- Figure 5f is reproduced that in contrast to the representation of Figure 5e, a capacitive feed is possible by the two coupling lines 47 ', 47 "of the phase shifter 47 are galvanically separated from the radiator surface 11.
- the feed point 53 is again eccentrically arranged relative to the total length of the phase shifter line 47, with this arrangement again a 90 ° phase shift at the feed points 48, which is provided offset by 90 ° on the inner side IIa of the radiator surface 11, as in the previous exemplary embodiments also
- the illustrated capacitive connection to the ring and / or frame-shaped radiator surface 11 and the ring and / or frame-shaped Total radiator surface 25 also causes the profit lobe to incline by about 9 ° to 11 °, which can be particularly advantageous for inclined vehicle roofs in order to compensate for a constructional imbalance in which the antenna is located.
- the feed structure here reproducing a closed rectangular frame, with two coupling lines 47 ', 47 "again leading from the feed point 53 to two contact points 48 offset by 90 °, via which the electrical connection
- the two contact points 48 are in this case connected to one another again via a further connecting line 47a, 47b (similar to the exemplary embodiment according to FIG. 5e), the additional connecting lines 47a, 47b quasi having their corner inwards relative to the exemplary embodiment according to FIG Figure 5g are folded).
- the exemplary embodiment according to FIG. 5h is based on the variant according to FIG. 5g and is characterized by two additional connecting links running in the middle and crosswise. lines 47a, 47b, via which the coupling lines 47 'and 47 "are additionally connected to each other and to the contact points 48.
- lines 47a, 47b via which the coupling lines 47 'and 47 "are additionally connected to each other and to the contact points 48.
- FIGS. 5j and 5g it is shown only schematically that the contour of the substrate and the radiator surface 11 need not coincide with the line 5i shows in plan view a square patch 11 with a square substrate 3, which has a circular boundary edge for the recess 13.
- phase shift lines 47 are rectangular with two legs ending at 90 ° 5j, the patch and the emitter surface 11 are circular, whereas the boundary edge of the recess 13 is square, in which case the phase shifter line is formed in a partial circle (in the manner of a 90 ° partial circle) that here the most different combinations un d variants are possible.
- the geometry of the patch antenna and the substrate with the radiator surface does not necessarily have to be square, but may also have different shapes. Generally, a regular polygonal is preferred.
- the substrate 3 can be cylindrical, for example, and the radiator surface 11 located thereon and the inner circular recess 13 can be circular.
- connection and coupling serving radial arm 47c is still formed, that is, an electrically conductive strip portion 47c, which is connected symmetrically to the two coupling lines with the radiator surface 11 and at a preferably small distance 47c to the one, in this embodiment longer coupling line 47 "ends, which leads to the feed point 53 (that is, has two mutually perpendicular coupling sections), wherein the second coupling line 47 'in turn leads radially to the junction of the annular radiator surface 11.
- a patch antenna formed in this way can have the following values, for example:
- Width of the recess 20 2 mm
- FIG. 7 in which, as a modification of the embodiment according to FIGS. 1 to 6, an altered feed structure is shown.
- this phase shifter line 147 is arranged with the feed point 153 in the sense of a 180 ° rotational symmetry symmetrical to the central axis 7 with respect to the first phase shifter line 47 with the local feed point 53 and is connected to the radiator surface 11 at the connection points 148.
- the equivalent circuit is shown.
- the two feed points 53 and 153 are fed via a 180 ° hybrid phase shifter 253.
- the bandwidth can be further increased.
- the directional characteristic of the antenna becomes symmetrical. There is no longer a problem with the profit lobe.
- the total supply of the 180 ° hybrid phase shifter 253 takes place via an inner conductor 43 '"of a corresponding feed line 43.
- the principle is comparable to the equivalent circuit diagram according to FIG. 4.
- each feed point with the associated phase shift line 47 or 147 is offset by 90 ° with respect to the rotating radiator surface 11.
- Both in the variant according to Figure 4 as well as in the embodiment of Figure 8 must over a feeding point 53 or 153 outgoing coupling lines 47 ', 47 "and 147', 147" to form the respective phase shifter line 47 and 147 not offset by 90 ° lying to each lead to a pair of feed points 48 and 148.
- a 30 ° angular offset or, for example, a 67.5 0 angular offset is possible if a corresponding phase shift over the respective associated coupling lines 47 ', 47 "or 147', 147" is selected.
- a circularly polarized wave can be transmitted or received in principle.
- the frusto-conical or pyra- midenstumpfförmig is designed from the overall shape, ie with side walls 3c, not perpendicular to the top or bottom 3a, 3b Substrate 3 and thus perpendicular to the radiator surface 11, but inclined thereto.
- the side walls are inclined at an angle to the central axis 7 (the angle ⁇ between the base surface or bottom 3b of the substrate 3 and the vertical cutting plane passing through the symmetry or central axis 7 being formed by the side walls or side surfaces 3c
- These side surfaces 3c, which are now inclined, are the side reflector surface portions 19 correspondingly discussed in detail, and the recess regions 20 therebetween, which are arranged alternately in the circumferential direction.
- the angle ⁇ can vary within wide ranges, but should be greater than 0 °.
- the structure of the substrate is designed to be quasi upside down according to FIG. 9, wherein nonetheless the radiator surface 11 is provided on the upper side 3a.
- the side walls 3c are then inclined in reverse to the embodiment of Figure 9.
- the angle should preferably be less than 180 ° to actually form a three-dimensional substrate. Values of less than 170 °, in particular less than 160 °, 150 °, 140 °, 130 °, 120 °, 110 ° and in particular 100 ° are preferred.
- the radiator structure may be formed in total, for example, using a metal sheet whose side radiator surface section 19 is spaced from the surfaces of the side walls 3 c.
- a sheet has been used which has been correspondingly punched, so that the overhead section of the radiator surface 11 can be glued to the surface 3a of the substrate, for example using an adhesive layer or a double-sided adhesive tape.
- the corresponding pre-punched side emitter surface portion 19 have then been bent down so that these side emitter surface portions 19 come to rest in the 9. vom- or sidewall areas S, but not directly on the surface of the side walls 3c are formed or positioned.
- the lateral distance A shown in FIG. 11 can be chosen arbitrarily over a wide range.
- the bending of the side radiator surface sections 19 can also be interrupted. done differently, so that these sections need not necessarily be aligned at a 90 ° angle to the upper radiator surface portion 11, as shown by dashed lines with reference to Figure 11 for two further examples by the side wall sections are formed obliquely, namely at an angle ⁇ comparable to the exemplary embodiment according to FIG. 9.
- side radiator surface portions 19 in the 39 lake L can also be provided with at least one further, for example, with respect to the ground surfaces underlying bend 19b, which runs parallel or obliquely to the ground surface and end with its free end on or at a distance from the side walls or side surfaces 3c.
- FIG. 13 shows, in a comparable vertical cross-section, that the side radiator surface sections 19 provided in the side surface or side wall space at a distance from the side walls 3c can also be provided with multiple angled sections 161, resulting, for example, in a type of circumferential stair structure in which at least predominantly vertically oriented sections with more horizontally oriented sections are formed consecutively.
- the punching process can be done so that when punching equal- the required phase shifter lines 47 are left in time, which are then formed in a punching process as part of the entire radiator structure in a materially connected manner with the remainder of the radiator surface.
- the side emitter surface portions 19 are circumferentially formed electrically galvanically closed. If appropriate, only punctiform connections can be provided in the corner regions between the side radiator surface sections 19 offset in the circumferential direction.
- the side radiating surface sections 19 folded over on the ruled lines 61 can be separated, in particular in their corner regions, by a punching or creasing line into an adjacent side radiating surface section 19 be.
- FIG. 14 in which the patch antenna is shown using a folded metal sheet.
- the side-emitter surface sections 19 which are laid on the side surfaces 3c or extend at a distance from them have emerged from edges in the upper corner region 61 from a jointly punched metal sheet.
- the phase-shifter line 47 with the two coupling lines 47 ', 47 "adjacent to the feed point 53 is also part of a stamped metal sheet. be prepared to a corresponding length of the feed line produce results from the punching an exception area 149 in the upper radiator surface eleventh
- Justierzapfen 97 are also provided on the upper side of the substrate, which preferably pass through at an appropriate location in the upper radiator surface 11 holes 97 'in the mounted position and thereby serve the adjustment of the radiator surface 11.
- the substrate 3 can have a cavity 103 which is accessible from the underside 3b via an opening 103a formed there. This results in a box-shaped substrate of overhead ceiling 3d and the circumferential side walls 3c.
- an additional printed circuit board 107 can be accommodated on which electrical or electronic components or assemblies 109 can be positioned.
- the mentioned printed circuit board 107 can be in a any height in this cavity 103 are housed, such as in Figure 17 approximately at mid-height and in Figure 18 directly on the underside of the upper top wall 3d.
- the entire inner or cavity 103 is lined or clad on the underside of the so-called ceiling 3d as well as on the inner side walls 3'c with a metallizing layer, whereby the entire inner space 103 is shielded to the side and upwards with respect to the substrate 3.
- a metallizing layer a layer of metallizing material, whereby the entire inner space 103 is shielded to the side and upwards with respect to the substrate 3.
- an electrically conductive or metallized or consisting of a metal sheet box of appropriate size could be inserted into this cavity 103.
- FIG. 18 also shows that the patch antenna formed in this way can be inserted via bores 117 in the printed circuit board LP via two spring devices 115 until the spring arms 117 'engage behind the opening 117 of the printed circuit board LP and thereby the substrate 3 already pre-adjusted to the PCB LP holds.
- the described antenna can in principle serve for transmitting as well as for receiving electromagnetic waves and in particular circularly polarized electromagnetic waves. It can also be used for simultaneous transmission and reception, in particular when, as usual, the transmission and reception range is frequency-wise offset, albeit small, from one another. When receiving the corresponding signals are then forwarded via the so-called feed line for further processing to the electronics located on the printed circuit board and / or other subsequent modules.
- the described embodiments show that with relatively little effort, two 3D ring patch antennas can be arranged nested in each other, for example, to receive GPS and SDARS signals.
- the cost-effective structure results from the fact that no ceramic as a dielectric for the patch antenna arrangement is necessary. Furthermore, a relatively compact structure can be realized. In addition, the S-parameters, the gain and the axial ratio meet the requirements.
- FIGS. 19 ff A further modification of the solution according to the invention in the form of a stacked antenna (stacked antenna) is now shown with reference to FIGS. 19 ff, in which the previously described antenna structure forms a first or outer patch antenna A according to the illustrated ring-shaped or patch-shaped patch antenna , below or within which a further patch antenna B is arranged, which is surmounted or encompassed by the first patch antenna A more or less completely.
- the radiator surface (211 of the second patch antenna B) is arranged in the distance between the radiator surface 11 of the first patch antenna A and the ground surface 17, in particular in a middle region of 20% to 80%, in particular 30 % to 70%, especially 40% to 60% of the total height or the total distance between the radiator surface 11 of the first patch antenna and the ground surface 17.
- the following results Embodiments an improved bandwidth and an improved gain, especially in GPS antennas.
- cost savings can be realized compared to conventional solutions of corresponding stacked patch antennas, since the antenna structure can preferably consist only of two sheets and one plastic carrier.
- FIG. 19 shows the basic structure of the stacked patch antenna arrangement in a three-dimensional representation of FIG. 1 and in an exploded view in FIG.
- the patch emitter A can be seen at the top, as is fundamentally described with reference to FIGS.
- the patch radiator A can be formed from a sheet by punching and edges. Therefore, in the circumferential annular or frame-shaped patch radiating surface, a recess 11 'can be seen, which only arises in order to distinguish between the two phases.
- the second patch antenna B can now be seen, which in the preferred exemplary embodiment shown is constructed such that the patch antenna A and the patch antenna B have a comparable antenna structure.
- the second patch antenna array B is a Emitter surface 211 which is ring-shaped or frame-shaped, wherein on the peripheral sides of a side surface emitter structure 218 is provided, which consists of a lot of ⁇ number of side emitter surface portions 219, between which recesses 220 are provided, which in the embodiment shown on the open to the radiator surface 11 repellent side open.
- a side surface emitter structure 218 which consists of a lot of ⁇ number of side emitter surface portions 219, between which recesses 220 are provided, which in the embodiment shown on the open to the radiator surface 11 repellent side open.
- the emitter surface 211 can be punched out of a sheet metal or metal part and parts folded, wherein in the recess region 213 again a feed structure 215 with two phase shifter lines 247 'and 247 "are formed, between which the similarly configured feed line 242 is again preferably transverse and preferably perpendicular to the plane of the radiator surface 211. Also here, a corresponding further recess 211 'in the radiator surface 211 is provided, which allows the corresponding feed line 242 punched in sufficient length from the metal sheet and edges
- the two phase shifter lines 247 'and 247 "terminate in each case at two connection points 248 on the inner edge of the recess with the recess a radiator surface.
- the support structure 10 made of a dielectric material can be seen.
- the support structure 10 comprises a support device 300 with a circumferential wall 301, wherein in the interior of this support structure then wall sections 302 and pedestals 303 are provided which terminate at different heights.
- the mentioned second lower or inner patch antenna B can be laid or mounted at a lower level or a lower level, whereas the patch antenna A is mounted across the lower patch antenna B at a higher level, ie at the upper level Emitter surface 11 to the lower ground plane is more remote than the radiator surface 211 of the patch antenna B.
- the second patch antenna B is provided in the region of its ring-shaped and / or frame-shaped radiator surface 211 with a latching device 311, which can consist of a plurality of individual fingers running radially toward the center.
- a latching device 311 which can consist of a plurality of individual fingers running radially toward the center.
- latching elements 313 are preferably per se formed as part of the support means 300 at corresponding support portions, which may be designed, for example mushroom-shaped, so that the finger-shaped latching elements 311 can latch underneath and the lower patch antenna B is held firmly and securely to the support means 300.
- FIG. 21 shows a schematic plan view of the exemplary embodiment according to FIGS. 19 and 20.
- FIGS. 22 and 23 show two sectional views of the line A-A and B-B in FIG. 21.
- the support device 300th in the form of the dielectric with the serving as a support walls or wall sections and pedestals, etc. is designed so that for the lower patch antenna B, a circumferential groove-shaped recess or recess 321 is formed in which the transverse and at least approximately perpendicular, for example in a Angle from 91 ° to 95 ° to the radiator surface can run down.
- the side-emitter surface portions 219 are positioned slightly outwards and abut against the inner side surface 300 'of the support device 300 during placement and mounting, as a result of which additionally a further fixed fixation of the inner patch antenna B is realized.
- FIGS. 22 and 23 also show that the carrier structure 10 or the carrying device 300 externally on the outer wall 301 also reveals in the region of its lower bottom an upwardly open circumferential groove 301 'with a small height, into which the leading It is further to be seen that in the outer surfaces 300 "the encircling wall 301 above all is engaged by the ends of the radiator surface sections 19 of the upper patch antenna A, which otherwise rest against the outer surface 300" of the outer wall 301 of the carrier structure 300 20) are formed in the corner regions, and that the radiator surface sections 19 provided in this region can be seen with corresponding latching elements 19 '(FIG. 20) interacting in the embodiment shown in the form of recesses which are located on the hook 307 engage. As a result, the outer or upper patch antenna on the support structure 10, i. Carrying device 300 fixed.
- FIG 24 is a bottom view of the explained Antenna arrangement shown, which may be provided with an adhesive tape 253 in order to stick the patch antenna assembly thus formed in a suitable location, for example on a chassis. Furthermore, in this arrangement, the two feed lines 42 and 242 can be seen. In order to realize or position these feeder lines unhindered, the two patch antennas A and B are preferably aligned with respect to their phase shifter lines so that the respective two co-operating phase shifter lines 47 'and 47 "or 247' and 247" in Top view rotated by 180 ° to each other, so are positioned diametrically opposite.
- the variant of the two patch antennas A and B can be tuned so that the patch antenna A, so the outer or the entire Antennenan arrangement overlapping patch antenna A is suitable for receiving signals which, for example, from a Global Navigation Satellite System (GNSS), whereas the lower or inner patch antenna B can be used, for example, to receive SDARS satellite signals.
- GNSS Global Navigation Satellite System
- the second patch antenna B is in one simplified embodiment can also be designed as a simply polarized patch antenna ⁇ , in which, for example, the radiator surface 211 is formed as a solid surface (eg without recess).
- the lower or internal patch antenna can comprise a B, for example, more or less vollflä ⁇ CHIGE emitter surface which is formed on the surface on a full-volume dielectric 261, for example, a cuboid or cube-like dielectric 261st
- a patch antenna can be used in which the carrier body of the dielectric of the patch antenna B consists of ceramic (the ceramic used can have a value of ⁇ ⁇ of 20 to 45).
- a plastic frame with more or less rotating support walls 301 according to the embodiment of Figures 19 and 20, said dielectric material may have, for example, ⁇ ⁇ of 2 to 6.
- the emitter surface of the first patch antenna A is then held and supported in the manner described.
- the outer or upper patch antenna (preferably in the form of a SDARS antenna) dispensed with an associated ceramic part, whereby a cost savings can be achieved.
- the outer patch antenna in particular in the form of an SDARS antenna, is preferably realized by a simple sheet metal structure.
- a high bandwidth AR can be realized, which has ⁇ 3 dB of, for example, 2320 MHz to 2345 MHz. This ensures interoperable data transmission in accordance with the Sirius / XM standard.
- the outer or upper patch antenna preferably in the form of an SDARS receiving antenna, improves the performance for the reception of geostationary position data, for example in the context of a Global Navigation Satellite System (GNSS) and, in particular, for receiving the GPS position data.
- GNSS Global Navigation Satellite System
- the internal patch antenna B which preferably acts as a GPS patch antenna or the like, can have external dimensions of, for example, 18 ⁇ 18 ⁇ 4 mm or, for example, 25 ⁇ 25 x 4 mm.
- the internal patch antenna B which preferably acts as a GPS patch antenna or the like, can have external dimensions of, for example, 18 ⁇ 18 ⁇ 4 mm or, for example, 25 ⁇ 25 x 4 mm.
- the second radiator surface 211 "of the second patch antenna B shown in FIG. 26 and FIG. 27 could be formed on the circumferential edge with a side surface radiator structure 218 with a multiplicity of side radiator surface sections 219, as in the exemplary embodiment according to FIG
- the radiator surface 11 could also be designed as in the exemplary embodiment according to FIG. 20, namely for producing a dual or circular polarized antenna, for example using the two phase shifter lines 247 'and 247 "shown there, but without the circumferential side surfaces Beam structure 18. Modifications are possible here.
- FIGS. 28 and 29 wherein the further embodiment shown in Figure 28 in a three-dimensional view and in Figure 29 in blow ⁇ sion-like representation.
- a quasi three-dimensional designed patch radiator A is provided, which is constructed in principle as well as in all otherSOgegange ⁇ nen embodiments also.
- the emitter surface 11 is configured in the shape of a frame, with the width of the emitter surface frame 11 "of this embodiment being kept comparatively narrow. ⁇ br /> ⁇ br/> Side emitter surface sections 19 are again formed on the circumferential edge of the emitter surface 11.
- two per longitudinal side of the emitter surface 11 are two in the longitudinal direction
- the respective side offset side radiating surfaces 19 are provided which are designed comparatively wide, ie have a width which approximately correspond to the distance between the two side radiator surface sections 19 per longitudinal side of the radiator surface 11.
- These lapping or tongue-shaped side radiator surfaces 19 extend not perpendicular but outwardly at an oblique angle away from the radiator surface 11, ie in one of the radiator surface 11 di ⁇ vergierenden arrangement towards the substrate 3, wherein in the illustrated embodiment, the end portions of the first 9 "of the side emitter surface sections 19 engage over the side walls 3c of the plate-shaped base of the substrate 3 at least at a partial height and end there parallel to the side wall 3c and abut.
- the second patch antenna is now not three-dimensional but designed only as a flat planar patch antenna.
- this patch antenna B can also again be configured, as in the preceding embodiments, with a frame-shaped radiator surface 211 with an internal recess and with a corresponding feed, the feed likewise in turn comprising two interacting phase shifter lines 247 'and 247 "
- the planar, preferably sheet-like, patch antenna B in the exemplary embodiment shown has an angular recess 401, offset inwardly from its outer circumferential boundary lines, whose size, that is to say dimensioning and position, corresponds to the platform-shaped elevations 303 in the dielectric
- this patch antenna B can be placed on the dielectric 3, ie on its surface 3a, such that the angular pedestals 303 projecting above the surface or top 3a of the dielectric 3 cover the corresponding recesses 401 in the Projector surface 11 of the patch antenna B through.
- the patch antenna B lies flat on the surface 3a of the dielectric 3 and is securely held and fixed by the corresponding recesses 401 in the patch antenna
- the patch antenna A is then placed, the frame-shaped radiator surface 11 then on the top 303 'of the podium-shaped corner or angle pieces rests and the patch antenna A overlaps.
- both patch antennas A and B may preferably consist of a sheet metal construction. That is, the patch antenna A and B is produced by stamping, wherein the patch antenna A is then also three times ⁇ deformed by edges in order to form the corresponding explained side radiator surface sections 19 with.
- the feeder lines can also be made in both patch antennas A and B by punching and by edges as explained.
- radial pins are used for the feed instead of the explained with reference to the other embodiments bent, so produced by punching the edges of the feed lines. That is, it is preferred for both the outer and the inner patch antenna A and B, a cylindrical pin used, which may be soldered to the corresponding feed point.
- the outer patch antenna A is three-dimensionally shaped, similar to the other embodiments as well, wherein the overall shape has less a cube shape than a pyramid shape (through the side radiator surface portions diverging from top to bottom).
- the inner second patch antenna B is formed purely flat and not three-dimensionally shaped, So without side emitter areas sections 19.
- the outer, ie upper, patch antenna arrangement A preferably serves for the reception of SDARS services, whereas the inner or lower, in the exemplary embodiment, flat patch antenna B is used for the GPS services.
- the inner second patch antenna B has a two-dimensional structure, i. two-dimensional surface, whereas the outer patch antenna is designed three-dimensional.
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Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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DE102011117690A DE102011117690B3 (en) | 2011-11-04 | 2011-11-04 | Circularly polarized patch antenna for use in body sheet of motor car, has supply structure comprising phase shifter-arrangement that is connected with emitter surface at two connection points under effect of phase shift |
DE201210016627 DE102012016627A1 (en) | 2012-08-22 | 2012-08-22 | Patch antenna installed in motor vehicle, has feeder structure that is provided with phase shifter arrangement for producing phase shift at two connecting points on radiating surface |
PCT/EP2012/004161 WO2013064204A1 (en) | 2011-11-04 | 2012-10-04 | Patch radiator |
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EP2721690A1 true EP2721690A1 (en) | 2014-04-23 |
EP2721690B1 EP2721690B1 (en) | 2015-12-30 |
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EP12778953.5A Not-in-force EP2721690B1 (en) | 2011-11-04 | 2012-10-04 | Patch radiator |
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EP (1) | EP2721690B1 (en) |
JP (1) | JP6100272B2 (en) |
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CN (1) | CN103959557B (en) |
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DE102022203585A1 (en) | 2022-04-08 | 2023-10-12 | Continental Automotive Technologies GmbH | Multi-layer patch antenna device, antenna module and vehicle with a multi-layer patch antenna device |
WO2023193849A1 (en) | 2022-04-08 | 2023-10-12 | Continental Automotive Technologies GmbH | Multilayer patch antenna device, antenna module and vehicle having a multilayer patch antenna device |
Also Published As
Publication number | Publication date |
---|---|
CN103959557A (en) | 2014-07-30 |
KR20140089578A (en) | 2014-07-15 |
CN103959557B (en) | 2016-12-14 |
RU2014122548A (en) | 2015-12-10 |
JP6100272B2 (en) | 2017-03-22 |
US9647328B2 (en) | 2017-05-09 |
WO2013064204A1 (en) | 2013-05-10 |
RU2587105C2 (en) | 2016-06-10 |
US20140285382A1 (en) | 2014-09-25 |
EP2721690B1 (en) | 2015-12-30 |
JP2014534761A (en) | 2014-12-18 |
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