WO2016050336A1

WO2016050336A1 - Multi-band radiator system

Info

Publication number: WO2016050336A1
Application number: PCT/EP2015/001777
Authority: WO
Inventors: Maximilian GÖTTL
Original assignee: Kathrein-Werke Kg
Priority date: 2014-09-29
Filing date: 2015-09-03
Publication date: 2016-04-07
Also published as: DE102014014434A1

Abstract

The invention relates to an improved multi-band radiator system, characterised in that, inter alia: it has at least one low-band radiator (A) formed as a vector dipole (1, A); the vector dipole (1, A) comprises four radiator zones (5) positioned about a central axis (7) and offset from one another; at least one high-band radiator (B) is arranged within the low-band vector dipole (1, A); the radiator zones (5) of the low-band vector dipole (1, A) have at least one slat-type edge (5b), at least parts or sections of which run in the circumferential direction, wherein the radiator zone surface (5a) is positioned deeper than the free end of the slat-type edge (5b); and at least one high-band radiator (B) is arranged in at least one radiator zone (5), and is positioned such that it is laterally offset in relation to the central axis (7) of the low-band vector dipole (1, A).

Description

Multiband spotlight system

The invention relates to a multiband radiator system according to the preamble of claim 1. From the prior art, multirange antennas are known which can transmit and receive in at least two different frequency ranges. For example, document DE 198 23 749 A1 shows a dual-polarized multigrade antenna comprising first and second radiators. The first and second radiators are operated in different frequency ranges and comprise dual-polarized dipole radiators which are arranged on a reflector and radiate in two polarization planes, which are oriented at + 45 ° and -45 ° to the vertical. In the multigrade antenna shown in this document, the first radiators comprise cross dipoles that radiate in an upper frequency band. The radiators in the lower frequency band consist of dipole squares, whereby in each dipole square a Kreuzdi- pol is arranged centric. By appropriate shaping When the reflector is used, the radiation properties of the first and second radiators can be changed, but it is not possible to simultaneously optimize the radiation characteristics for the upper and lower frequency bands.

A different solution is also known from EP 1 470 615 Bl. There is a cup or cup-shaped radiator is provided as a dual-polarized radiator, which radiates in a lower frequency band. In the middle of this cup-shaped or cup-shaped dual-polarized radiator, another dual-polarized radiator is arranged, which transmits and receives in a higher frequency band with respect to the first-mentioned radiator. This further radiator, which is seated in the interior, is designed as a vector radiator, as it is basically also known from EP 1 057 224 B1, for example, as known. In this case, this vector-shaped dual-polarized radiator preferably in the corner region in each case an electrically galvanic connection between the electrically conductive connecting or outer webs.

With such antennas so-called SISO applications (single-input, single-output) can be realized in which a single transmitter antenna and a single receiving antenna are provided for the respective band.

In addition, today not only so-called SIMO (Single-Input, Multi-Output) or MISO (Multi-Input, Single-Output), but especially so-called MIMO applications are of particular importance, ie applications with multi-input and Multi output radio devices. Again, these are usually so-called X-polarized antennas whose polarization plane, for example, in a + 45 ° - and at a -45 ° angle to the horizontal (or the vertical) are aligned.

Antennas which have two polarizations per frequency band or frequency range to be transmitted are very widespread. They are 2 x 2 MIMO capable per frequency band or frequency range.

The first products are already on the market, such as the Kathrein antenna 80010865. Here, for a first frequency band (here called highband), in a frequency range 1710-2690 MHz, in addition to an X-polarized dual-band antenna system, another X-polarized highband Antenna system placed. The dual-band antenna system also operates a second frequency band (called low band) z. B. with a frequency range of 698-960 MHz. The high-band antenna system placed next to it operates in the frequency ranges 1710-2690 MHz. Thus, a 2 x 2 MIMO functionality is available in the lowband and a 4 x 4 MIMO functionality in the highband.

However, such MIMO-capable antenna systems require a space that can not be underestimated. Furthermore, there are always problems with respect to the placement of the lower frequency band-dependent radiator devices, since the distance between the radiators for a high band range should be chosen differently in contrast to the low band range, so as not to cause too high side lobe emissions. It is therefore an object of the present invention to provide an improved multiband radiator system, which is moreover preferably not only SISO but also at least MISO, SIMO or MIMO capable.

The object is achieved according to the features specified in claim 1. Advantageous embodiments of the invention are specified in the subclaims.

The present invention provides inter alia a very compact multiband radiator system which has or can have a high integration density.

The preferred MIMO-capable compact multiband emitter system makes it possible, for example with respect to a radiator for the lower frequency band two, three or e.g. also four (theoretically even more) spotlights for the higher frequency band to position.

In particular, the multi-band emitter system according to the invention can be developed into an antenna array in which between the respective adjacent emitters for the lower frequency band not only - as described for example in EP 1 082 782 Bl - an additional radiator device for a higher frequency band, but at this point For example, two, three or preferably four (or theoretically even more) radiators for the higher frequency band can be positioned. The high-band radiators provided between two adjacent radiators for the lower frequency band can also be arranged offset from the central attachment line of the radiators for the lower frequency band in order to influence the half-width of the high-band radiators.

In the context of the invention, it is possible to realize such optimized and very compact positioning of the radiators for the higher frequency band (between the lower and higher frequency band). In addition, the distances of the radiators for the higher frequency band are optimized in order to achieve optimal beam shaping with optimum half-width and with optimally suppressed side lobes.

For example, in prior art radiator systems, radiators for a higher frequency band (high band) operating in a frequency range of, for example, 1710 MHz to 2690 MHz are arranged in two parallel adjacent antenna columns, a gap between these two antenna columns has ( in each case based on the center of an antenna column) whose dimension between 1.2 to 2 wavelengths (λ) with respect to the center frequency of the frequency band to be transmitted resulted. In the so-called 4 4 MIMO mode and the joint operation of both antenna columns for diagram formation (by means of precoding method), the horizontal column spacing in the radiation diagram would produce unwanted large side lobes. These large sidelobes would lead to increased interference and thus to losses in the data. tenrate. In other words, this would not achieve an optimal data rate.

Measurements have shown that a horizontal emitter spacing of, for example, 0.8λ, based on the mean transmitted wavelength of the frequency band, can increase the data rates by up to 20% in the context of the invention. In these measurements, the horizontal radiator distances were compared in the range of 0.5 to 10λ (based on the average operating wavelength of the frequency band to be transmitted) with vertical radiator distances in the range of about 0.8λ.

For the sake of completeness, reference is merely made to two prior publications, US Pat. No. 6,452,549 Bl and US Pat. No. 5,485,167. The former prepublication generally describes a stacked or layered multiband antenna having radiator devices seated at different levels, as well as the second prior art publication, for which only a general reference is made to such antenna devices.

The invention will be explained below with reference to various embodiments. This shows in detail

FIG. 1 shows a spatial representation of a low-band vector dipole used in accordance with the invention and designed according to the invention;

FIG. 2 shows a similar representation to FIG. 1, in which the low-band signal shown in FIG. Vector dipole is equipped with four high-band emitters; a modification to Figure 2, in which only in a radiator zone of the low-band vector, a high-band radiator sits; a supplement to Figure 2a, in which in each case a high-band radiator is arranged in two diagonally opposite radiator zones; a modification to Figure 2b, wherein in each case a high-band radiator is arranged in two non-diagonally opposite but adjacent radiator zones of a low-band vector dipole; a corresponding representation to Figure 2, wherein the low-band vector dipole is positioned with the built-in high-band radiators on a reflector provided with circumferential webs; an embodiment modified from FIG. 3 with post-like spacer housings mechanically and galvanically separated for the individual radiator zones; a top view of the Ausführungsbei- game according to Figure 4a, FIG. 4c shows a side view of the exemplary embodiment according to FIGS. 4a and 4b;

Figure 5: a plan view of an inventive

Antenna array using the low-band vector dipoles with high-band signals explained on the basis of the preceding figures.

radiators; FIG. 6: an embodiment modified with respect to FIG. 5 with a plurality of additional high-band radiators;

FIG. 7 shows a mixed arrangement with a different number of additional high-band radiators between different pairs of low-band vector dipoles;

FIG. 8 shows a further modified exemplary embodiment in plan view, in which the additional high-band radiators have a greater lateral distance from one another than the high-band radiators provided in the low-band vector dipole;

FIG. 9 shows a further modified exemplary embodiment with an increase in the number of additional high-band radiators; FIG. 10a: a partial representation of the explained low-band vector dipole, in which a single one in a radiator zone arranged high-band radiator is positioned off-center to the radiator zone; a representation complementary to Figure 10a, in which two high-band radiators are arranged side by side in a single radiator zone of a low-band vector dipole parallel to the lateral boundaries of the radiator zone; a similar representation to Figure 10b, in which the two single high-band radiators are positioned in diagonal alignment in a respective radiator zone of a low-band vector dipole; and a plan view of a single radiator zone of a four-emitter zone low-band vector dipole, in which four high-band emitters are arranged in a single emitter zone.

Reference will first be made to FIG. 1, in which a so-called vector dipole 1 is shown in a spatial representation, which is used as a low-band radiator A.

A vector dipole is an emitter type which can receive and transmit, for example, in two polarization planes PI and P2 which are perpendicular to one another (in principle, it is also possible to transmit and receive circularly polarized electromagnetic waves; a corresponding supply is available). Such vector dipoles have become known inter alia, for example, from EP 1 057 224 B1, EP 1 620 924 B1 or also from EP 1 470 615 B1.

The aforementioned dual-polarized vector dipole 1, which is also referred to below as a dual-polarized low-band radiator A, is constructed substantially symmetrically. He has on its upper side 3 four shaped radiator zones 5, which are offset by a central axis 7 in each case by 90 ° to each other. The radiator zones 5 in the embodiment shown in plan view are at least approximately square shaped and formed, although this is not absolutely necessary.

In the illustrated embodiment, the radiator zones 5 are formed in the manner of trays 9. They have a radiator zone surface 5a, which usually extends perpendicular to a central axis 7 passing centrally through the low-band vector dipole 7 and thus parallel to a reflector 11 with a reflector plane RE shown, for example, with reference to FIG. These radiator zones surfaces 5a are provided with a generally at least almost completely circumferential ridge-shaped edge 5b. This rib-shaped edge 5b can also have recesses 5d in the circumferential direction, in particular in the inner corner areas facing one another, as can already be seen from FIG. By such a configuration, the radiator zone web surface 5a undergoes the function of a trough bottom 5a, wherein the web-shaped edges 5b represent the tub rim 5b. Below the radiator zones 5, the pillar-like spacer 13 shown in FIG. 1 is provided, via which the radiator zone 5 is arranged in a distance predetermined by the pillar-like spacer 13 with respect to a reflector 11 shown in FIG. 3, for example.

The post-like spacer 13 is electrically connected to the radiator zones 5. It has symmetry-like vertical slots 15, by means of which the four radiator zones 5 shown in FIG. 1 are kept separate. These vertical slots 15 usually terminate at a small distance 16 in front of the underside 13a of the post-like spacer 13, about which in the embodiment shown all four radiator zones 5 via the spacer 13 are also firmly connected, held and galvanically connected. The electrically conductive underside 13a of the post-like spacer 13 is thereby galvanically or capacitively positioned in front of an electrically conductive reflector 11 (as shown in Figure 3) and / or fixed.

The aforementioned vertical slots 15 are aligned with the extent of the individual radiator zones 5 separating zone distances or zone slots 5c. The feeding of the radiator zones is carried out as known from the prior art vector dipoles or vector radiators. It is so far only on the example Reference is made to the exemplary embodiment described in EP 1 057 224 Bl, which shows a so-called folding dipole.

Such a trained vector dipole is characterized in that each of the two diagonally opposite radiator zones 5, for example, the two radiator zones 5 in one polarization plane PI and the other two offset by 90 ° radiator zones 5 "in the second perpendicular to the first plane of polarization PI The two polarization planes PI, P2, which are formed perpendicular to one another, are perpendicular to the reflector plane RE or are aligned parallel to the central axis 7. As a result, the planes of polarization PI and P2 run diagonally through the respective obliquely opposite radiator zones 5 and 5, respectively 5 ". The remainder of the low-band radiator A thus described is designed in a similar way to a conventional dipole with a radiator symmetry, radiator feed, etc.

In spite of the radiator zones deviating from conventional known radiators, preferably in the form of depressions or troughs 9, this is ultimately a vector dipole 1, as it is already used with differently formed vector dipoles, as known from the prior art can be.

However, within the scope of the invention, the specific embodiment according to FIG. 1 opens up the possibility that in the individual radiator zones 5, ie in the peripheral edge 5b, which is preferably closed more or less closed or more or less open. NEN troughs 9 now additional spotlights can be positioned. It is preferably provided in the context of the invention that at least one additional radiator for a high band is positioned at least in one of the trough-shaped radiator zones 5, but in particular in at least two, three and preferably in all four trough-shaped radiator zones 5. The webs 5b which surround the radiator zones 5a completely, partially or in sections and project from the radiator zones 5a in the beam direction perpendicular to the radiator surface 5a or obliquely (angled) then form the reflector surroundings for the high-band radiators B discussed below FIG. 2 shows the low-band radiator A described in FIG. 1, with a high-band radiator B now being positioned in all four trough-shaped radiator zones 5 in this exemplary embodiment. This high-band radiator B can - as shown in the embodiment shown in Figure 2 is shown - also consist of a vector dipole, as in principle, for example, in the above-mentioned Vorveröffentlichungen or for example as a high-band radiator in a cup or cup-shaped low - Band emitter is positioned, as described, inter alia, in EP 1 470 615 Bl or in EP 1 817 815 Bl, the disclosure content of which reference is made in its entirety.

Within the scope of the invention, however, there is no restriction on the type of high-band radiator B. It is just as easy to use polarized dipole radiators, cross-shaped dipole radiators, dipole squares, not only dual polarized radiators in general but also circularly polarized radiators, etc. are used. As a result, patch radiators, etc. can also be positioned on the radiator zones 5a, ie in the preferably trough-shaped radiator zones 5.

The exemplary embodiments shown thus prove that the high-band radiator B lies outside the central axis 7 of the low-band vector dipole or vector radiator 1, A. Although this is not absolutely necessary, the centers 17 of the high-band radiators B can be arranged centrally and thus centrically in the respective radiator zone 5. For example, in FIG. 6, the centers or the central axes 17 of the high-band radiators B are shown next to the center or the central axis 7 of the middle low-band radiator 1, A.

Notwithstanding the embodiment shown, 5 different high-band radiators can be provided in the individual radiator zones. It does not always have to be equipped with a same type of high-band emitters. Thus, some of the radiator zones or at least one radiator zone with patch radiators, another radiator zone with a singly polarized dipole radiator and a still further radiator zone can be equipped with a vector dipole or a dipole or a dipole square etc. There are no restrictions in this respect.

The low-band radiator system can be designed, for example, preferably for the mobile radio frequency ranges 698 MHz to 960 MHz or, for example, 614 MHz to 960 MHz. The high-band radiators may preferably be designed for the frequency ranges 1710 MHz to 2690 MHz, 1695 MHz to 2690 MHz, 1423 MHz to 2170 MHz, 2500 MHz to 3800 MHz or, for example, 3200 MHz to 3800 MHz. Any combinations of these frequency ranges are possible. The aforementioned frequency ranges are given by way of example only. Any other different frequency bands or frequency ranges are also suitable, wherein the respective center frequency of the low-band frequency band and the high-band frequency band should preferably differ by at least a factor of 1.2 and higher. A difference of the center frequencies of the two frequency bands by a factor of at least 1.3 or 1.4 or at least 1.5 is advantageous.

The mentioned completely, partially or sectionally formed ridge-shaped edges 5b to form the recesses or troughs 9 formed thereby in the radiator zones 5 can be chosen differently from their height. The height of these web-shaped edges 5b, ie the webs or edges 5b is preferably greater than 5%, in particular greater than 10%, 15%, 20%, 25%, 30%, 35%, 40% or greater than 45% or im In an extreme case, even 50% of the average operating wavelength with which the corresponding high-band radiator B arranged in the radiator zone 5 is operated. Conversely, the height of this ridge-shaped edge 5b can thus preferably be less than 50%, in particular less than 45%, 40%, 35%, 30%, 25%, 20%, 15% or even 10% of this mean operating wavelength of the associated high-band radiator B be. In other words, the respective radiator surface 5 a forms a reflector surface for a high-band radiator B positioned there. Basically, this could be sufficient. However, a better beam shaping and a further reduction of undesirable side lobes is generally achieved if the respective radiator surfaces 5 a are completely, partially or at least partially provided with a web 5 b which transversely or in particular perpendicular to the beam plane of the radiator surface 5 a formed extends. Therefore, even if the mentioned ribs 5b do not completely, but only partially or only partially surround the radiating surface 5a in question, this is referred to as a box-shaped or vane-shaped structure, ie a reflector structure with a recess opposite the radiator surface 5a mentioned surrounded ridges or edges 5b.

With reference to FIG. 3, the dual-band radiator arrangement according to the invention is shown seated in front of a reflector 11, wherein the reflector plane RE of the reflector 11 can preferably also again be provided with a ridge-shaped reflector edge IIa. This web-shaped reflector edge IIa is preferably oriented perpendicularly or at an angle to the reflector plane RE. It does not necessarily have to be designed to be completely closed. It also serves for beam shaping for the low-band radiator A.

As already mentioned, in deviation from the exemplary embodiment according to FIGS. 2 and 3, the design can also be such that not all four radiator zones 5, ie 5a to 5d, are equipped with high-band radiators B, but that, for example, only three of these radiator zones are NEN 5 or even only two of the radiator zones 5 or in extreme cases, even only one of the radiator zones 5 is equipped with at least one high-band radiator. In FIG. 2 a, therefore, a multi-band emitter is shown in which, in deviation from the representation according to FIG. 2 (and 3), only one of the emitter zones 5 is equipped with a high-band emitter B. Figure 2b shows a variant in which two radiator zones 5 are each equipped with a high-band radiator B, which are arranged in two diagonally opposite (ie offset by 180 °) radiator zones, so that the perpendicular offset two also diagonally to each other aligned radiator zones remain free.

FIG. 2c shows a deviation insofar as the two high-band radiators B shown here are positioned in two adjacent (ie not diagonally opposite) radiator zones 5. Likewise, for example, three high-band radiators could be positioned in three radiator zones, which is not shown separately in the drawing.

A slightly modified embodiment is shown with reference to FIGS. 4a to 4c.

Namely, in the variant according to FIGS. 4a to 4c, the post-like spacer 13 is not formed in one piece, by which the four radiator zones 5 are ultimately held together and positioned, but instead is designed as four separate spacers 13a to 13d. educated. In other words, the spacers shown in Figs. 1, 2 and 3 pass through symmetry-like dividing slots 15 extending crosswise from the radiator zones 5 to near the bottom 13a of the post-like spacer 13, completely through the spacer so as to form separate spacers 13a to 13d are each mechanically fixed and electrically-galvanically connected individually with an associated radiator zone 5.

This view reproduced in FIG. 4b in plan view and in FIG. 4c in a side view parallel to the reflector plane RE shows that the four radiator zones 5 are formed and connected separately by the spacers 13a, 13b, 13c or 13d assigned to them separately and separately onto the reflector 11 are positioned, preferably in galvanic contact with the electrically conductive surface of the reflector 11, or at least capacitively connected thereto. This also significantly reduces the manufacturing costs. The feeding of the individual radiator zones 5 takes place as in the prior art and as already explained. As mentioned, the high-band radiators B, which are arranged in the preferably trough-shaped radiator zones 5, can transmit and receive, for example, in a higher frequency band compared to the low-band range of the low-band radiators A. However, these high-band radiators B do not all have to work in the same highband frequency band. Some of the high-band radiators provided in the radiator zones 5 can operate in different high-band frequency ranges, so that overall not only a compact dual-band radiator system but within the scope of the invention also a very compact multiband emitter system can be realized.

It is also shown, inter alia, on the basis of the exemplary embodiments according to FIGS. 4a to 4c that, for example, the base reflector 11 does not necessarily have to be provided with circumferential webs, although this is generally preferred in order to achieve improved beam shaping.

With the compact multiband or dual-band radiator arrangements according to the invention according to the embodiments explained, however, it is also possible to realize a corresponding very compact multiband or dual band radiator array.

Reference is first made to FIG. 5.

There, an antenna array is shown with an antenna column 21, wherein the antenna column on the rückwertigen side of the radiator shown comprises a reflector 11, on which the radiators shown in Figure 5 are owed owed. The antenna gap 21 comprising the reflector 11 can, for example, again be provided with lateral boundary webs IIb, in particular on the longitudinal sides 23 of the reflector 11 formed rectangular in this embodiment, which are oblique or perpendicular to the reflector plane RE and in the beam direction, ie in the beam direction Projecting direction in which on the reflector 11 and the at least one low-band vector dipole 1 and the one or more high-band radiator B are arranged. These side bars serve as mentioned the beam shaping. The antenna array with the antenna column and the reflector plane is usually preferably oriented vertically or at least approximately vertically. In the direction of attachment 25 are now in a preferably dependent on the low frequency band NF operating frequency distance range explained the equipped with the low-band emitters and preferably several high-band emitters combi spotlight C. The distance of the low-band vector dipoles 1, A can be in wide Be - be chosen rich. Preferably, a distance between two mutually offset in the mounting direction 25 low-band vector dipoles selected, for example, between 0.7 λ to 1 λ of the average operating wavelength of the corresponding frequency band, in which the low-band radiator is operated.

Since the preferred radiator spacing between the high-band radiators B is significantly lower (even if a distance of 0.7 λ to 1 λ of the mean operating wavelength of the high-band radiator is used there, this distance is due to the higher frequency and thus the lower wavelength compared with the low-band radiators), it is now provided that in each case between two preferably in the vertical direction adjacent low-band radiators A (ie here in the form of combination radiator C) z. B. at least one and as shown in the embodiment of Figure 5, two additional high-band radiator B 'are positioned. In this case, the two additionally provided high-band radiators B 'are arranged lying transversely offset to the column in the longitudinal direction, so that the additional high-band radiators B ^{1 are} each positioned in a cultivation line 27 a and 27 b. In this case, all high-band radiators B, B ¹ have gig from whether they are arranged in the trough-shaped radiator zones 5a or between the low-band radiators A in front of the reflector, the same lateral emitter spacing 29th

It is further noted that in this embodiment as well, not all radiator zones 5a have to be equipped with the additional high-band radiators B ". In the variant according to Figure 6, between two low-band radiators A, ie between two adjacent combination radiators C, not only two but four additional high-band radiators B 'are arranged, each with an offset in the mounting direction 27a and 27b on the one hand and with a lateral offset 29. On the other hand, therefore, the beam sequence with respect to the distances between two high-band radiators B, B' in Mounting direction 27a, 27b repeated because now the distances between the additional high-band radiators B ¹ and between an additional high-band radiator B 'and a high-band radiator B within a radiator zone 5a of the low-band radiator A at least approximately the same size.

FIG. 7 shows a similar variant to FIG. 6, in which the additionally provided high-band radiators B 'are likewise arranged at the same lateral distance from the central longitudinal axis 33 through the antenna gaps 21, as has already been explained in the exemplary embodiment with reference to FIG. At the same time, the central longitudinal plane 33 can also be the central symmetry plane through the antenna gaps 21. In this case, only one pair of additional high-band radiators B 'is transversely between the two uppermost low-band vector dipoles 1, A and in particular arranged perpendicular to the central longitudinal plane 33 side offset 29, wherein between the middle and the lower low-band vector dipole 1, A, similar to the embodiment 6, four additional high-band radiators B 'with lateral offset 29 and with an offset in the mounting direction 27a, 27b are arranged ,

If required, it is also possible to purposefully produce a different half-width for the high-band radiators so that the intended additional high-band radiators B ', which are arranged between the low-band radiators A, are positioned with different lateral offset 29 in front of the reflector 11. In the variant according to FIG. 8, the additional high-band radiators B 'are positioned with a larger lateral lateral distance 29, which is greater than the lateral distance 30 or the distance 31 between the central centers 17 of the high-band radiators B, which are inside the trough-shaped radiator zones 5a are arranged.

Here, Figure 8 also shows a mixed arrangement such that between the uppermost two low-band radiators A or combi C only one pair of laterally offset from each other additional high-band radiators B 'are arranged, whereas between the two lower low-band radiators A two pairs of laterally offset additional high-band radiators B 'are arranged. The side offset of the high-band radiator is done as well as the arrangement of the low-band radiator A preferably symmetrical to a central longitudinal plane 33, the center in the cultivation direction 27 and perpendicular in the longitudinal direction of the reflector 11 of the antenna column 21 extends.

It is shown with reference to FIG. 9 that the number of high-band radiators B 'additionally provided for two low-band radiators A can certainly vary. Notwithstanding the previously discussed embodiments, between two adjacent in the mounting direction 25 or vertically stacked low-band or combination radiators A, C not only two additionally positioned in front of the reflector 11 high-band radiator B 'must be provided, but it can deviating even a single high-band radiator (preferably centrally relative to the central longitudinal plane 33) or, for example, three or more additional high-band radiator B ¹ with lateral offset transversely to the central longitudinal plane 33 preferably on a common position line 35 perpendicular center longitudinal plane 33 positioned. In this case, an arrangement in one or, for example, several, in particular two rows 35 offset in the vertical mounting direction 25, can be provided. Therefore, the variant according to FIG. 9 describes an exemplary embodiment in which between two adjacent low-band radiators A three additional high-band radiators B 'in a row 35 transverse to the central longitudinal plane 33 and between the two low-lying low-band radiators A two in the direction of attachment 25 offset from each other and each perpendicular to the central longitudinal plane 33 extending rows 35 are arranged with additionally provided high-band radiators B ¹ .

However, the single-column antenna arrays explained above can also be oriented in such a way that the antenna nentspalten 21 preferably not vertically or approximately vertically but also, for example, in any other direction, in particular horizontally or approximately horizontally aligned. It is also possible to form antenna arrays comprising a plurality of adjacent antenna columns, in which the explained low-band and high-band radiators are arranged.

By the above-described embodiments as well as by the above-mentioned embodiment of the multiband radiator system according to the invention in the form of, for example, several columns and rows of radiators comprehensive antenna array is not yet determined how the individual low-band radiator A and the high-band radiator B interconnected are.

Usually, the high-band radiators arranged in an antenna column, for example a vertical antenna column, and the low-band radiators arranged in this antenna column are each interconnected (for example by interposition of corresponding phase shifter elements for setting the down-gate, etc.). It is expressly pointed out that other feeding methods are also possible within the scope of the multiband emitter system explained in the present case, as shown and described, for example, in WO 2004/051796 A1 or US Pat. No. 6,943,732 B2 which corresponds to its content. It can be seen from this that, for example, emitters in an antenna column can also be interconnected and fed together with at least one or more emitters in an offset, for example, adjacent antenna column. For example, this results in an shaped interconnected radiator structure, as shown for example in the publications mentioned above with reference to FIG 5. However, all the interconnections described to that extent and described by the above-described prior publications can also be implemented in the context of the multiband emitter system described here, both for the low-band radiators A and separately for the high-band radiators B or for both the low-band and the high-band emitters A, B. Restrictions also do not exist in this respect.

In this case, with reference to FIG. 10a, a detail of a composite combination spotlight is shown, namely a radiator zone 5 of a high-band radiator, which is e.g. as shown in Figures 4a to 4c has a associated with him and from the other spacers of the other radiator zones 5 spacer 13a. In other words, only one-fourth of the combination emitters shown in FIGS. 4a to 4c, for example, is shown in FIG. 10a.

In the embodiment according to FIG. 10a, even only a single high-band radiator B is accommodated in the radiator zone 5 shown there, but eccentrically, ie eccentrically to the center (middle) of the surface of the radiator zone 5, deviating from the preceding exemplary embodiments. In the variant according to FIG 10b it is shown that in a radiator zone two high-band radiators B are arranged side by side, with lateral offset parallel to a boundary web 5 'or 5 "of the trough-shaped the trough-like formed radiator zone 5 (wherein the two high-band radiators B can also be offset and, for example, with the same lateral distance to the side bars 5 ', 5 "can be arranged).

With reference to FIG. 10c, it is shown that in principle also in a radiator zone 5 the two high-band radiators B which are likewise provided there can be arranged in diagonal alignment with one another, ie not immediately parallel at the same distance next to a common side boundary web 5 'or 5 ", as shown in Figure 10b.

On the basis of the illustration according to FIG. 10d, a corresponding plan view of a single radiator zone 5 is reproduced (that is to say one of the four radiator zones of a low-band radiator A offset by 90 ° from one another), in which variant four high-band radiators B in this Emitter zone 5 are arranged.

The illustrated variants can be provided, for example, in each case only for one radiator zone 5 of a low-band radiator A. However, the variants can also be implemented in a corresponding manner for two, for three or for all four radiator zones of a low-band radiator. In this case, the placement can be made differently in the individual radiator zones, ie, in a radiator zone, for example, no high-band radiator, two in another radiator zone and in a third radiator zone three or four high-band radiators etc .. In the end, the individual or several high-band radiators provided in the individual radiator zones 5 as stated consist of different simple or dual polarized or circularly polarized radiators, which in turn are formed of different radiator types, such as dipole, dipole, simple polarized Dipolstrahler, Patchstrahler etc .. Again, there are no fundamental limitations. Thus, even in a single radiator zone different types of radiators could be used. The FIGS. 10a-ff. Thus show that in the at least one or in the plurality of radiator zones (in particular in the form of depressions or troughs 9), more than one single high-band radiator B can optionally also be arranged. These radiators B can also be positioned differently, usually in such a way that their center is not congruent with the center of the associated radiator zone 5. As described, the number of additional high-band radiators B per radiator zone 5 can also be increased even further by this measure, so that, for example, three or in particular four additional high-band radiators can also be arranged in one radiator zone.

Especially in the case of such an embodiment, a very high integration density with respect to such an antenna system, in particular for mobile radio, can be realized, which can be operated at significantly higher data rates than with conventional antennas, in particular mobile radio antennas. Due to the described structure of the antenna system, especially higher MIMO modes can be achieved and used. Higher MIMO modes are understood to mean more than 2 x 2 MIMO modes, such as 4 x 4, 8 x 8, 2 x 4, 4 x 2, etc. modes. In this case, a plurality of modifications to the illustrated embodiments may be provided. In the following, only a few indications regarding further modifications are to be given, without the number and the nature and variants of the modifications being conclusive by the following list.

All mentioned high-band radiators B can be dual-polarized.

The high-band radiators B used as well as the additional high-band radiators B ¹ provided in the context of an antenna array can comprise different types of radiators, for example dual-polarized or simply polarized or circularly polarized radiators, or else dipole radiators, dipole squares, cross dipoles, vector dipoles , Patchstrahler, etc..

- The mentioned high-band emitters can work in different frequency bands or frequency ranges. - The provided in the context of the invention compact

Multiband radiator system comprises in addition to the at least one vector-shaped low-band radiator to form at least pan-like radiator zones (ie radiator zones with a zone edge at least partially or partially circumferential zone area) high-band radiator, such that at least one of the four radiator zones 5a, but preferably at least two, three, and especially Re at least four radiator zones 5 are each equipped with at least one additional high-band radiator B '.

Likewise, more than one high-band radiator B can be positioned in the individual radiator zones 5 or at least in some of the radiator zones 5, for example at least two high-band radiators, which together with corresponding operational frequencies can sit side by side in the preferred associated trough-shaped radiator zone 5.

The multi-band emitter systems can be combined as vertical, horizontal or in combination of vertical and horizontal antenna arrays. In this case, single or multiple high-band radiators can be combined, which are arranged between two low-band radiators A.

The individual radiator zones, in particular trough-shaped or trough-like or recessed radiator zones, are preferably formed symmetrically. These radiator zones can also be designed asymmetrically.

The radiator zones surrounding the radiator zone 5 in whole or in sections, which form the trough-like radiator zones, have a preferably equal ridge or edge height, whereby a uniform trough height is formed. Likewise, however, the web height and thereby the tub height of the radiator zones can also vary. Thus, not only the web height can be different for individual radiator zones, but it may possibly even have the ridge or edge height of a single radiator zone sections have different height dimensions.

5 - Preferably all trough-shaped radiator zones are designed the same. But they can also be designed differently and / or equipped.

The radiator feed is preferably coaxial. But it can also be designed for the use of cables, possibly also coaxial cables.

- The emitter power supply can also be laid out for circuit boards.

- The radiator connections can be realized by soldering. But they can also be done by means of plug connections.

0

- The emitter spacing between the individual high-band radiators is preferably the same, but different in different applications.

5 - The high-band radiators are preferably fed individually. It is also possible that several high-band radiators, for example, at least one or two high-band radiators are connected to form an array.

O

- Preferably, all four high-band radiators can be connected to form an array, in particular all in a low band emitter provided high-band emitter.

The high-band emitters can be equipped with filter functions.

The multi-band emitter is equipped with a filter function.

The multiband or dual-band radiator according to the invention is further equipped with electronic components.

Claims

Claims:

1. Multiband radiator system with the following features

with at least one low-band radiator (A), which is designed as a vector dipole (1, A),

the vector dipole (1, A) comprises four radiator zones (5) offset from each other about a central axis (7),

- Within the low-band vector dipole (1, A) at least one high-band radiator (B) is arranged

characterized by the following further features

- The radiator zones (5) of the low-band vector dipole (1, A) have at least one partially or sectionally extending in the circumferential direction ridge-shaped edge (5b), whereby the Strahlerzonen- surface (5a) is lower than the free end of the web-shaped edge (5b),

- In at least one radiator zone (5) at least one high-band radiator (B) is arranged laterally offset from the central axis (7) of the low-band vector dipole (1, A) is positioned.

2. Multiband radiator system according to claim 1, characterized in that in each case at least one high-band radiator (B) is arranged in at least two or three radiator zones (5) or in all four radiator zones (5).

3. Multiband radiator system according to claim 1 or 2, characterized in that in at least one radiation Lerzone (5) and preferably in two, three or in all four radiator zones (5) at least two high-band radiators (B) are positioned.

4. Multiband radiator system according to one of claims 1 to 3, characterized in that the radiator zones (5) are trough-shaped or boxenfömig or similar designed, in which a wholly or partially or partially circumferential ridge-shaped edge (5b) opposite the radiator Surface (5a) projects obliquely or vertically.

5. Multiband radiator system according to one of claims 1 to 4, characterized in that the center operating frequency of the low-band radiator (A) from the center operating frequency of the at least two high-band radiators (B) at least by a factor of 1.2 , preferably at least differs by a factor of 1.3, 1.4, 1.5, 1.75, 2.0, 2.25 or at least 2.5.

6. Multiband radiator system according to one of claims 1 to 5, characterized in that the web-shaped edge (5b) extends circumferentially around a radiator zone (5a) or has at least one recess in the central inner area adjacent to the central axis (7).

7. Multiband radiator system according to one of claims 1 to 6, characterized in that the web-shaped edge (5b) with respect to a radiator zone (5a) is the same height or with respect to all radiator zones (5a) is the same.

8. multiband radiator system according to one of claims 1 to 6, characterized in that the web-shaped edge (5b) with respect to a radiator zone (5a) is of different heights or with respect to all the radiator zones (5a) of different heights.

9. Multiband radiator system according to one of claims 1 to 8, characterized in that the webs or edges (5b) greater than 5%, in particular greater than 10%, 15%, 20%, 25%, 30%, 35%, 40% or preferably 45% and / or less than 50%, in particular less than 45%, 40%, 35%, 30%, 25%, 20%, 15% or 10% respectively of the average operating wavelength of the associated high-band radiator ( B, B ¹ ).

10. Multiband radiator system according to one of claims 1 to 9, characterized in that the four radiator zones (5) of the low-band vector dipole (1, A) are positioned on a post-like spacer (13) extending in extension of the separating sections (5c) between the radiator zones (5) include vertical slots (15) which extend to the radiator zones (5) opposite ends of the post-like spacer (13) and there in a partial height range of at least 20%, in particular at least 15%, 10% or at least 5 % of the total height of the post-like spacer (13).

11. Multiband radiator system according to one of claims 1 to 9, characterized in that at least one and preferably all the radiator zones (5) of a low-band vector dipole (1, A) via a spaced apart them just post-like spacer (13a, 13b, 13c, 13d) and thus is or are galvanically connected, which are separated mechanically and / or galvanically from the post-like spacers (13a, 13b, 13c, 13c) of the respectively further radiator zones (5) the underside (13a) of such a post-like spacer (13a, 13b, 13c, 13d) is positioned on a reflector (11) and connected to it galvanically or capacitively.

12. Multiband radiator system according to one of claims 1 to 9, characterized in that a plurality of low-band vector dipoles (1, A) in at least one mounting direction (25) in the manner of an antenna array with at least one or more antenna columns (21) are arranged.

13. Multiband radiator system according to claim 12, characterized in that in the distance region between at least two adjacent low-band vector dipoles (1, A) at least one or more additional high-band radiators (Β ') are arranged, preferably in front of a reflector (11). ,

14. Multiband radiator system according to claim 13, characterized in that at least one of the plurality of provided high-band radiators (B) and / or at least one of the plurality of additional high-band radiators (Β ') provided consists of a single-polarized dipole, a dual-polarized one Dipole, a cross dipole, a dipole square, a vector dipole or a patch radiator or comprises.

15. Multiband radiator system according to claim 13 or 4, characterized in that the at least one or more additional high-band radiators (Β ') between at least two adjacent low-band vector xpols (1, A) to an antenna column (21) passing through the central longitudinal plane (33) and / or in the mounting direction (25) offset from each other are positioned.

16. Multiband radiator system according to one of claims 1 to 15, characterized in that the high-band radiators (B, B ') individually or groups of high-band radiators (B, B ¹ ) are fed together.

17. Multiband radiator system according to one of claims 1 to 16, characterized in that in at least one

Emitter zone (5) of at least one low-band vector dipole (1, A) only a high-band radiator (B) is arranged centrally in the radiator zone (5).

18. Multiband radiator system according to one of claims 1 to 16, characterized in that in at least one radiator zone (5) at least one low-band vector dipole (1, A) at least two high-band radiators (B) are arranged, whose centers to the center of Emitter zone (5) is offset.

19. Multiband radiator system according to one of claims 1 to 18, characterized in that the multiband radiator system comprises at least two antenna columns with low-band vector dipoles (1, A) and therein high-band radiators (B, B '), wherein the low-band vector dipoles (1, A) are fed together in one antenna column or with at least one other in the other ren antenna gap sitting low-band vector dipole (1, A) are fed together.

20. Multiband radiator system according to one of claims 1 to 19, characterized in that the multiband radiator system comprises at least two antenna columns with low-band vector dipoles (1, A) and therein high-band radiators (B), wherein the highband Emitters (B) are fed together in an antenna column or fed together with at least one other in the other antenna column high-band radiator (B).