CN201134510Y

CN201134510Y - Miniaturized Smart Antenna System

Info

Publication number: CN201134510Y
Application number: CNU2007200590038U
Authority: CN
Inventors: 卜斌龙; 刘木林; 赖展军; 徐东良
Original assignee: Comba Telecom Systems China Ltd
Current assignee: Comba Network Systems Co Ltd
Priority date: 2007-10-31
Filing date: 2007-10-31
Publication date: 2008-10-15
Anticipated expiration: 2017-10-31

Abstract

The utility model discloses a miniaturized intelligent antenna system, which comprises: at least two array element rows are arranged side by side, each array element row includes at least one radiation unit, and the radiation unit is a dual-polarized vibrator for transmitting or receiving signals. The radiating units in the element row are fed in parallel; the reflector is used for setting the radiating unit in the array element row and used as its reflector, and the radiating unit and the reflector are connected by conductive connection or capacitive coupling; a single set of calibration network , one end is electrically connected to the base station system, and the other end is electrically connected to multiple array element arrays for calibrating the antenna system. The utility model can simplify the structure, reduce the operating cost of the system, reduce the wind resistance of the antenna system, realize the miniaturization of the antenna, improve the safety performance, and can ensure the multi-adjustment freedom of the antenna system, so as to realize good dynamic adjustment of the beam, and realize Polarization diversity is more suitable for wireless mobile communication networks and compatible with traditional single-polarization dipole antenna systems.

Description

The miniaturized intelligent antenna system

[technical field]

The utility model relates to the wireless mobile communications field, relates in particular to a kind of miniaturized intelligent antenna system.

[background technology]

Along with the continuous development of wireless communication technology and perfect, smart antenna improves the availability of frequency spectrum owing to can realize space division multiple access; Realize the pairing of unlimited channel and wave beam, solve dense urban district capacity bottleneck rapidly; Utilize the wave beam forming technology,, optimize antenna array pattern, to suppress interference signal, to improve anti-fading ability based on the Adaptive Signal Processing algorithm; The location that simultaneously can also realize travelling carriage represents its powerful advantage in many-side, becomes one of key technology of 3G (Third Generation) Moblie.

In the prior art, mostly be perpendicular polarization, specifically can be with reference to a kind of high-isolatting-degree plate-shape directinal intelligent antenna array that on August 9th, 2006, disclosed Chinese CN2805113 patent announcement was disclosed.This patent adopts the single polarization oscillator to form smart antenna array as radiating element.

For dynamic and intelligent adjustment wave beam is to realize good covering as required, system requirements has the more adjusting degree of freedom usually, for example adopts the antenna array of 8 row forms, and its schematic diagram sees also Fig. 1.

Please in conjunction with Fig. 1 and Fig. 2,

array element row

21,22,23,24,25,26,27,28, the spacing d of adjacent two radiating elements is about 1/2nd wavelength.From structural representation shown in Figure 2 as can be seen, antenna system generally comprises 8 array element row 21～28, base plate 11 and calibration network 31.

Be not difficult to find out that the front face area of all this mattress arrays as depicted in figs. 1 and 2 is bigger in the known technology, thereby strengthen windage, security performance is descended, and increased the difficulty of construction when installing and fixing; In addition, because area is excessive, sight property is bad, and traction is not high, also easily causes the Psychological Panic that the website surrounding resident is installed and resists mood.

Open day is the CN2845199 patent announcement on December 6th, 2006, disclosed a kind of antenna system that adopts the dual polarization oscillator, also should dwindle the antenna array volume in theory, but, because it still adopts two groups of calibration coupling circuits, causes its cost still higher, and can not be with the antenna system compatibility of existing employing single polarization oscillator, therefore, still owe perfect.

[summary of the invention]

The purpose of this utility model just provides a kind of miniaturized intelligent antenna system, is regulating under the identical prerequisite of the degree of freedom with prior art, the area of antenna system is reduced half, thereby reduce windage, improves the security performance of antenna; Keep the compatibility with existing single polarization element antenna system, realize polarization diversity, improve the message capacity of system and reduce cost.

For achieving the above object, the utility model adopts following technical scheme:

The utility model miniaturized intelligent antenna system comprises:

At least two array element row are arranged side by side, and each array element row comprises at least one radiating element, and radiating element is the dual polarization oscillator, is used for emission or received signal, and the radiating element in the array element row carries out parallelly feeding;

Reflecting plate is provided with it on and as its reflector, described radiating element adopts to conduct electricity with reflecting plate and is connected or the capacitive coupling connection for the radiating element in the array element row;

Single group calibration network, an end and base station system electrically connect, and the other end and a plurality of array element row electrically connect, and are used for antenna system is calibrated.

Particularly, described radiating element is that polarised direction is respectively+the dual polarization oscillator of 45 ° and-45 °.

Described radiating element is metal oscillator, microstrip structure or paster structure.

Be interspersed and/or parallel distribution between described array element row;

For the purpose of optimizing performance, erect the dividing plate of a lengthwise between adjacent two array elements row, adopt conduction to be connected or the capacitive coupling connection between dividing plate and the reflecting plate.

In order further to optimize performance, in each array element row, before and after the longitudinally of the array element row of each radiating element under it, respectively establish a spacer that is orthogonal to the setting of this longitudinally, adopt conduction to be connected or the capacitive coupling connection between spacer and dividing plate or the reflecting plate.

Described calibration network places semi-enclosed shielding box, and is fixed on the reflecting plate.

In order to reduce the influence of radiating element to calibration network, this group calibration network is installed on the circuit board, and described shielding box comprises the backing plate and the last cover of mutual locking, and circuit board places backing plate and goes up between the cover.

Compared with prior art, the utility model can simplified structure, reduces system's operation cost, reduces the area of antenna system, reduce windage, realize the miniaturization of antenna, improve the security performance of antenna system, and can guarantee many adjustings degree of freedom of antenna system, so that realizing good wave beam dynamically adjusts, and realization polarization diversity, more be applicable to mobile radio networks, and can compatible traditional single polarization element antenna system.

[description of drawings]

Fig. 1 is the principle schematic of traditional intelligence antenna;

Fig. 2 is the structural representation of traditional intelligence antenna;

Fig. 3 is a principle schematic of the present utility model;

Fig. 4 is the perspective view of the utility model first embodiment;

Fig. 5 is the perspective view of the utility model second embodiment;

Fig. 6 is the perspective view of the utility model the 3rd embodiment;

Fig. 7 is the perspective view of the utility model the 4th embodiment;

Fig. 8 is the scheme of installation of calibration network.

[embodiment]

Below in conjunction with drawings and Examples the utility model is further described:

See also Fig. 3 and shown in Figure 4, a kind of miniaturized intelligent antenna system by following each several part to becoming:

Four

array element row

21,22,23,24, each array element are shown 8 radiating elements 20 that formed by the dual polarization oscillator, and radiating element 20 becomes+45 ° and-45 ° of polarised directions about vertical direction or horizontal direction, is used to transmit or received signal.

A metallic reflection plate 11 as the reflector of radiating element 20, is positioned at the bottom of described radiating element 20, supplies each radiating element 20 of four

array element row

21,22,23,24 to be provided with on it.Described radiating element 20 adopts conduction to be connected with reflecting plate 11 or capacitive coupling connects.

One group of calibration network 31, be installed on the front or the back side of reflecting plate 11, its part port is connected with above-mentioned

array element row

21,22,23,24 respectively, so that calibration network 31 self and each

array element row

21,22,23,24 are realized electrically connecting, other port and base station system electrically connect, and are used for antenna system is calibrated.

Described dual-polarization radiating unit 20 can be the metal oscillator, also can be microstrip structure or paster structure.A kind of version of dual-polarization radiating unit can not repeat them here referring to " a kind of dual polarization wideband section antenna radiation unit " described on May 25th, the 2005 disclosed CN2702458 patent announcement.

Can be parallel distribution mode as shown in Figure 4 and put for the relative position between described each

array element row

21,22,23,24, also be that each radiating element 20 is arranged with the matrix-style of rule in the antenna system.The mode that also can be interspersed as shown in Figure 5 and Figure 6 perhaps is the mixing of above-mentioned two kinds of distribution modes.The quantity of the odd number

array element row

21,23 of the described embodiment of Fig. 5 and the radiating element 20 of even number

array element row

22,24 is all identical, and vertical beamwidth is basic identical, but odd number

array element row

21,23 and even number

array element row

22,24 equivalent phase center differences.The radiating element 20 quantity differences (differing one) of the odd number

array element row

21,23 of embodiment shown in Figure 6 and even number

array element row

22,24, vertical beamwidth is difference slightly, but odd number

array element row

21,23 are identical with even number

array element row

22,24 equivalent phase centers.

For the purpose of optimizing performance, in adjacent two

array element row

21 and 22,22 and 23, and erect the dividing

plate

41,42,43 that lengthwise is set between 23 and 24 respectively, as shown in Figure 7, adopt conduction to be connected between dividing

plate

41,42,43 and the reflecting plate 11 or the capacitive coupling connection.

In order further to optimize performance, in array element row 24 inside, with single radiating element 20 is unit, the front and back of the longitudinally of the array element row 24 under it, between the side plate 13 of dividing plate 43 and reflecting plate 11, setting is provided with former and later two

spacers

51,52, and the longitudinally of

spacer

51,52 and the longitudinally quadrature of array element row 24 adopt conduction to be connected or the capacitive coupling connection between the side plate 13 of

spacer

51,52 and dividing plate 43 and reflecting plate 11.In like manner, the spacers in the array element row 21 are arranged between the side plate 12 and dividing plate 41 of reflecting plate 11, and the spacer of

array element row

22,23 is separately positioned between the dividing

plate

41,42 and between the dividing

plate

42,43.

As shown in Figure 7 and Figure 8, described calibration network 31 both can be installed in the front of reflecting plate 11, also can be installed in the back side of reflecting plate 11.In order to reduce the influence of 20 pairs of calibration networks 31 of radiating element, described calibration network 31 being arranged on the circuit board simultaneously, also is that calibration network 31 places semi-enclosed shielding box 60 then with circuit board.This shielding box 60 comprises cover 61 and lower bolster 62, and calibration network 31 is placed on the lower bolster 62, and its loam cake is established cover 61, will go up cover 61, lower bolster 62 and calibration network 31 with screw and tighten together, and forms hemi-closure space.

Although on physical structure, improvement of the present utility model is easy-to-understand, but, aspect technique effects such as electric property that this improvement brought, practical level, the utility model has bigger improvement, is specially: the utility model makes the area of the smart antenna of traditional application single polarization oscillator dwindle half at least, realizes the miniaturization of smart antenna, thereby reduce windage, improve the security performance of antenna; And, by the application of dual polarization oscillator, can realize polarization diversity, improve the defective of signal of communication multipath fading, improve the message capacity of system; In addition, owing to only adopt a calibration network, can reduce a part of cost; More crucially, can also be compatible mutually with existing single polarization element antenna system.

Above embodiment only in order to the explanation the utility model and and the described technical scheme of unrestricted the utility model; Therefore, although this specification has been described in detail the utility model with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model; And all do not break away from the technical scheme and the improvement thereof of spirit and scope of the present utility model, and it all should be encompassed in the middle of the claim scope of the present utility model.

Claims

1. A miniaturized smart antenna system, characterized in that: comprising:

At least two array element rows are arranged side by side, each array element row includes at least one radiation unit, the radiation unit is a dual-polarized oscillator for transmitting or receiving signals, and the radiation units in the array element row are fed in parallel;

A reflector, on which the radiation unit in the array element row is arranged and used as its reflector, and the radiation unit is connected to the reflector by conductive connection or capacitive coupling;

A single set of calibration network, one end is electrically connected to the base station system, and the other end is electrically connected to multiple array element arrays, and is used for calibrating the antenna system.

2. The miniaturized smart antenna system according to claim 1, wherein the calibration network is placed in a semi-closed shielding box and fixed on the reflector.

3. The miniaturized smart antenna system according to claim 2, characterized in that: the group of calibration networks is fixed on the circuit board, the shielding box includes a backing plate and an upper cover that are locked to each other, and the circuit board is placed on the backing between the board and the cover.

4. The miniaturized smart antenna system according to any one of claims 1 to 3, wherein the radiating unit is a dual-polarized vibrator whose polarization directions are respectively +45° and -45°.

5. The miniaturized smart antenna system according to claim 4, wherein the radiation unit is a metal oscillator, a microstrip structure or a patch structure.

6. The miniaturized smart antenna system according to claim 4, characterized in that: the array elements are distributed in a staggered and/or parallel manner;

7. The miniaturized smart antenna system according to claim 4, characterized in that: a vertical partition is erected between two adjacent array elements, and the partition and the reflector are connected by conductive connection or capacitive coupling .

8. The miniaturized smart antenna system according to claim 7, characterized in that: in each array element row, each radiating unit is provided with one orthogonal to the longitudinal direction of the array element row to which it belongs. For the spacers standing vertically in the longitudinal direction, the spacers are connected to the separator or reflector by conductive connection or capacitive coupling.