CN202695727U - Antenna array feed network - Google Patents
Antenna array feed network Download PDFInfo
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- CN202695727U CN202695727U CN 201220338911 CN201220338911U CN202695727U CN 202695727 U CN202695727 U CN 202695727U CN 201220338911 CN201220338911 CN 201220338911 CN 201220338911 U CN201220338911 U CN 201220338911U CN 202695727 U CN202695727 U CN 202695727U
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- transmission line
- insulating trip
- power splitter
- removable insulating
- aerial array
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Abstract
The utility model provides an antenna array feed network, which comprises a medium plate, a feeder network distributed on the medium plate, a chassis with a distance apart from the medium plate and arranged in parallel, and a movable insulation sheet arranged between the medium plate and the chassis. The movable insulation sheet is capable of reciprocating along a first direction on the feeder network so as to adjust the phase relationship between the input end of the feeder network and at least one output end of the feeder network, and the feeder network comprises a plurality of power dividers and a plurality of circuitous transmission wires connected with the power dividers. According to the antenna array feed network, the circuitous transmission wires with special shapes and special extending directions are used for substituting the traditional feeders extending along a straight line in the feeder network, on the premise of effectively controlling the length of the antenna array feed network, the variation range of the variable phase shift value produced by each output end is enabled to be doubled and redoubled, and the variable phase shift value is in linear correlation with the position of the movable insulation sheet.
Description
Technical field
The utility model relates to the antenna for base station technical field, more particularly, relates to a kind of aerial array feeding network.
Background technology
Traditional tunable antenna element is comprised of power divider, transformer and phase regulator, in high performance antenna, these parts are closely connected mutually, because these parts strongly interact, sometimes be difficult to form desirable beam shape, therefore need the beam-forming network of standard to solve these problems.
In prior art one, among the U.S. patent of invention US5949303, a kind of network of adjusting the wave beam angle of depression of aerial array is disclosed, this beam-forming network comprises fixing base, strip line network and insulator movably, insulator is placed between fixing base and the strip line, strip line elongates along the same direction of insulator activity, and part strip line insulated body covers.The propagation rate of signal component is reduced by the effect of the insulator between strip line and fixing base, so the phase difference of the difference of network output is apart from just energy is controlled.This technology has following shortcoming: at first, the relative position that output is interrupted causes constraint to distribution, contradicts with the physics realization of beam-forming network in some practical application; Secondly, this method is not suitable for the linear antenna arrays that comprises the odd number output port.
In prior art two, among the Europatent WO 03/019723, a kind of adjustable antenna feed network with integrated phase shifter is disclosed.This device comprises with the branching networks of the common feeder of a plurality of ports and is installed near the network insulating trip, and insulating trip is removable in order to synchronously adjust phase relation between common feeder and the one or more port.Insulating trip has transformer portion, to reduce the reflection by the signal of network.
Fig. 1 provides a kind of 10 port device figure among the embodiment for prior art two, strip line 9,13,14,15,16,17,18 is between insulator 47a and insulator 47b, as insulator 47a and insulator 47b during with identical direction synchronizing moving, phase difference between each adjacent output port synchronously changes, and the maximal phase potential difference of adjacent output port by insulator 47a, 47b movably ultimate range determine, namely determined by strip line 9,13,14,15,16,17,18 length.The phase difference of adjacent output port is directly proportional with the angle of declination of aerial array, and strip line 9,13,14,15,16,17,18 is shape linearly, is fit to be applied in the aerial array of little angle of declination (such as 10 degree angle of declinations); If this application of installation is in the aerial array of large angle of declination (such as 20 degree or 30 degree angle of declinations), just need to increase significantly strip line 9,13,14,15,16,17,18 length, make the length of whole device be far longer than the length of aerial array, can increase like this volume, cost and the complexity of antenna.
Also recommended a kind of embodiment with delay line in prior art two, the purpose of doing like this is to increase a variable phase shift value, increases the maximal phase potential difference of adjacent output port.Fig. 2 is that prior art two provides a kind of 3 port device figure among the embodiment, it comprises the delay strip line part with tortuous loop line shape, in the moving process of insulator, when the edge of insulator bore intersects with the delay strip line parallel portion of tortuous loop line shape, can make the position of phase shift and insulator form nonlinear correlation.
Like this, the device of mentioning in the prior art two can only provide a little variable phase shift value relevant with the insulator position linearity between the output port for it, and a large variable phase shift value with insulator position nonlinear correlation perhaps is provided.Its technology is used and has been subject to certain limitation, haves much room for improvement.
The utility model content
The purpose of this utility model is for the problems referred to above, and a kind of improved aerial array feeding network is provided, and the variable phase shift value that its each output port is obtained is relevant with the position linearity of mobile insulating trip, and has larger excursion.
For achieving the above object, the utility model by the following technical solutions:
A kind of aerial array feeding network, comprise dielectric-slab, be distributed in feeder network on the dielectric-slab, and dielectric-slab at a distance of a segment distance and the chassis that be arranged in parallel and the removable insulating trip between dielectric-slab and chassis, described removable insulating trip can move back and forth along a first direction on feeder network, with the input of adjustment feeder network and the phase relation between at least one output, the tortuous transmission line of multistage that described feeder network comprises a plurality of power splitters and is connected with power splitter.
Described tortuous transmission line comprises that at least two sections linear transmission lines connect transmission line with the section of being connected, described linear transmission line is arranged in order along the second direction perpendicular to first direction, and each section linear transmission line equates with the angle of second direction place straight line, connects transmission line with the end to end series connection of each section linear transmission line.
The angle of each section linear transmission line and second direction place straight line is more than or equal to 60 °.
The angle of each section linear transmission line and second direction place straight line is 90 °, i.e. each section linear transmission line and first direction place straight line parallel.
Described tortuous transmission line comprises at least two sections linear transmission lines, and described linear transmission line is arranged in order along first direction place straight line, and each section linear transmission line equates the successively end to end series connection of each section linear transmission line with the angle of first direction place straight line.
The angle of each section linear transmission line and first direction place straight line is acute angle.
The tortuous transmission line of corresponding each section place is provided with impedance transformation zone on the removable insulating trip, and the material of the removable insulating trip in the described impedance transformation zone is removed, with the impedance matching transformer as tortuous transmission line.
Described impedance transformation zone is positioned at a side of removable insulating trip.
Described impedance transformation zone is for being positioned at the hole of removable insulating trip inside.
On the second direction perpendicular to first direction, the projection width in described impedance transformation zone is greater than the projection width of tortuous transmission line.
Described power splitter is the one-to-two power splitter, it comprises a main power splitter and some from power splitter, the synthetic end of described main power splitter is the input of feeder network, output of main power splitter is electrically connected the input of a tortuous transmission line, and another output is electrically connected a synthetic end from power splitter; Each all is electrically connected with the input of a tortuous transmission line from an output of power splitter, and another output is as the output and the electric connection of exterior antenna array of feeder network; The output of the tortuous transmission line of part is electrically connected a synthetic end from power splitter, and the output of the tortuous transmission line of part is electrically connected as output and the exterior antenna array of feeder network.
Also comprise the fixed insulation sheet, described fixed insulation sheet is fixed between dielectric-slab and the chassis.
Described fixed insulation sheet and removable insulating trip are positioned at same plane, and its outline has step to be changed, and the step variation of fixed insulation sheet and removable insulating trip cooperatively interacts, to limit the mobile range of removable insulating trip on first direction.
The synthetic end of main power splitter and part have crossover from output and the fixed insulation sheet of power splitter.
The relative both sides of main power splitter are distributed with from power splitter.
Described chassis comprises the first chassis and the second chassis, and the first chassis and the second chassis lay respectively at the relative both sides of dielectric-slab.
Described removable insulating trip comprises the first removable insulating trip and the second removable insulating trip, and the first removable insulating trip is between dielectric-slab and the first chassis, and the second removable insulating trip is between dielectric-slab and the second chassis; The first removable insulating trip is identical with the material of the second removable insulating trip, and shape is identical, and synchronizing moving.
Each tortuous transmission line and removable insulating trip all have crossover.
The aerial array feeding network that the utility model provides, in feeder network, use the tortuous transmission line replacement linearly extended feeder line in the past with special shape and special bearing of trend, under the prerequisite of the effective length of the array-fed network of control antenna, the excursion of the variable phase shift value of its each output port generation is doubled and redoubled, and the size of variable phase shift value is relevant with the position linearity of mobile insulating trip.Aerial array feeding network of the present utility model has the large characteristics of the antenna pattern downwards bevel beam angular range of adjustment, its compact conformation of while, handling ease, cost is low, can directly apply to the adjustable antenna for base station of downwards bevel beam LINEAR CONTINUOUS on each working frequency range, in cell mobile communication systems, be with a wide range of applications.
Description of drawings
Fig. 1 is 10 port device structural representations in the prior art two.
Fig. 2 is the 3 port organization schematic diagrames that delay structure is arranged in the prior art two.
Fig. 3 is the structural representation of the utility model embodiment.
Fig. 4 is the structural representation of the first tortuous transmission line of the utility model embodiment.
Fig. 5 is the profile of A-A described in Fig. 3.
Fig. 6 is the profile of B-B described in Fig. 3.
Fig. 7 is that the phase place between the adjacent output port of 10 port devices changes the theory structure schematic diagram in the prior art two.
Fig. 8 is that the phase place between the adjacent output port of the utility model embodiment changes the theory structure schematic diagram.
Fig. 9 is the structural representation of the tortuous transmission line of second embodiment of the present utility model.
Figure 10 is the structural representation of the tortuous transmission line of the 3rd embodiment of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described in detail.
For convenience reason only, in the following description, used specific direction term, such as " on ", D score, " left side ", " right side " etc., take the accompanying drawing of correspondence as reference, can not think restriction of the present utility model, when the definition direction of drawing changed, the direction that these words represent should be interpreted as corresponding different directions.
See also Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the aerial array feeding network of the present embodiment comprises PCB dielectric-slab 100, invests the feeder network on the PCB dielectric-slab 100, the first chassis 201 that is positioned at PCB dielectric-slab 100 upsides, the first removable insulating trip 122a, the first fixed insulation sheet 121a, the second fixed insulation sheet 123a, and the second chassis 202, the second removable insulating trip 122b, the 3rd fixed insulation sheet 121b and the 4th fixed insulation sheet 123b that are positioned at PCB dielectric-slab 100 downsides.The described first removable insulating trip 122a and the second removable insulating trip 122b can move back and forth along first direction Y on feeder network, with the input of adjustment feeder network and the phase relation between each output.In the utility model embodiment, described first direction Y be shown in Fig. 3 from top to bottom.
Described feeder network comprises that main power splitter 109, first is from power splitter 101, second from power splitter 105, the 3rd from power splitter 113, the 4th from power splitter 117, the first tortuous transmission line 124, the second tortuous transmission line 125, the 3rd tortuous transmission line 126, the 4th tortuous transmission line 127, the 5th tortuous transmission line 128.
Main power splitter 109 is comprised of strip line 110,111,112, strip line 110 is as synthetic end, strip line 111,112 is as output, the signal of strip line 110 is dispensed to strip line 111,112 two arm outputs, strip line 110,111,112 length and width have determined the power-division ratios that main power splitter 109 is required, have also determined the impedance matching property on the particular job frequency band simultaneously.
First is comprised of strip line 102,103,104 from power splitter 101, strip line 102 is as synthetic end, strip line 103,104 is as output, the signal of strip line 102 is dispensed to strip line 103,104 two arm outputs, strip line 102,103,104 length and width have determined first from the required power-division ratios of power splitter 101, have also determined the impedance matching property on the particular job frequency band simultaneously.
Second is comprised of strip line 106,107,108 from power splitter 105, strip line 106 is as synthetic end, strip line 107,108 is as output, the signal of strip line 106 is dispensed to strip line 107,108 two arm outputs, strip line 106,107,108 length and width have determined second from the required power-division ratios of power splitter 105, have also determined the impedance matching property on the particular job frequency band simultaneously.
The 3rd is comprised of strip line 114,115,116 from power splitter 113, strip line 114 is as synthetic end, strip line 115,116 is as output, the signal of strip line 114 is dispensed to strip line 115,116 two arm outputs, strip line 114,115,116 length and width have determined the 3rd from the required power-division ratios of power splitter 113, have also determined the impedance matching property on the particular job frequency band simultaneously.
The 4th is comprised of strip line 118,119,120 from power splitter 117, strip line 118 is as synthetic end, strip line 119,120 is as output, the signal of strip line 118 is dispensed to strip line 119,120 two arm outputs, strip line 118,119,120 length and width have determined the 4th from the required power-division ratios of power splitter 117, have also determined the impedance matching property on the particular job frequency band simultaneously.
The relative both sides of described main power splitter 109 are distributed with from power splitter, and particularly, as shown in Figure 3, described first is positioned at the upside of main power splitter 109 from power splitter 101 and second from power splitter 105; The 3rd is positioned at the downside of main power splitter 109 from power splitter 113 and the 4th from power splitter 117.
The 3rd tortuous transmission line 126 at main power splitter 109 and second between the power splitter 105, realize main power splitter 109 1 output strip lines 111 and second from the electric connection of the synthetic end strip line 106 of power splitter 109 in order to transmit interconnected; The second tortuous transmission line 125 is first from power splitter 101 and second between the power splitter 105, realize second from power splitter 105 1 output strip lines 107 and first from the electric connection of the synthetic end strip line 102 of power splitter 101 in order to transmit interconnected; The first tortuous transmission line 124 and the first output strip line 103 from power splitter 101 are electrically connected in order to transmit interconnected; The 4th tortuous transmission line 127 is the 3rd from power splitter 113 and the 4th between the power splitter 117, realizes that the 3rd is electrically connected in order to transmit interconnected from power splitter 113 1 output strip lines 115 and the 4th synthetic end strip line 118 from power splitter 117; The 5th tortuous transmission line 128 and the 4th output strip line 119 from power splitter 117 are electrically connected so that interconnected transmission.
The first tortuous transmission line 124, the 3rd tortuous transmission line 126, the 4th tortuous transmission line 127 and the second tortuous transmission line 125, the 5th transmission line complications 128 stagger respectively and are arranged in parallel, wherein the first tortuous transmission line 124, the 3rd tortuous transmission line 126 and the 4th tortuous transmission line 127 are located on the same line, and the second tortuous transmission line 125 and the 5th transmission line complications 128 are located on the same line.
The structure of the first to the 5th tortuous transmission line is identical.With reference to Fig. 4, the first tortuous transmission line 124 connects transmission line 142, the second linear transmission line 143, the second connection transmission line 144 and the 3rd linear transmission line 145 by the first linear transmission line 141, first and is composed in series successively.Wherein, the first to the 3rd linear transmission line and first direction Y place straight line parallel, and along being arranged in order perpendicular to the second direction X of first direction Y, in the utility model embodiment, described second direction X be shown in Fig. 3 from right to left.First to second connects transmission line with the first to the 3rd linear transmission line successively end to end series connection.
Particularly, the input of the first linear transmission line 141 is as the input of the first tortuous transmission line 124, the output of the first linear transmission line 141 is connected transmission line 142 with first input connects, the first output that connects transmission line 142 is connected with the input of the second linear transmission line 143, the output of the second linear transmission line 143 is connected transmission line 144 with second input connects, the second output that connects transmission line 144 is connected with the input of the 3rd linear transmission line 145, and the output of the 3rd linear transmission line 145 is as the output of the first tortuous transmission line 124.
Corresponding feeder network, the synthetic end 110 that defines main power splitter 109 is the input of feeder network, the output of the first tortuous transmission line 124 is the first output of feeder network, first from the output strip line 104 of power splitter 101 the second output as feeder network, second from the output strip line 108 of power splitter 105 the 3rd output as feeder network, the 3rd from the output strip line 116 of power splitter 113 the 4th output as feeder network, the 4th from the output strip line 120 of power splitter 117 the 5th output as feeder network, and the output of the 5th tortuous transmission line 128 is as the 6th output of feeder network.
With reference to Fig. 5 and Fig. 6, the first chassis 201 and dielectric-slab 100 are at a distance of a segment distance and be set in parallel in the upside of dielectric-slab 100, and the second chassis 202 and dielectric-slab 100 are at a distance of a segment distance and be set in parallel in the downside of dielectric-slab 100.The first removable insulating trip 122a is between PCB dielectric-slab 100 and the first chassis 201, the second removable insulating trip 122b is between PCB dielectric-slab 100 and the second chassis 202, the structure of the first removable insulating trip 122a is identical with the material of the second removable insulating trip 122b, shape is identical, and synchronizing moving.
As shown in Figure 3, the first removable insulating trip 122a, the second removable insulating trip 122b and main power splitter 109, first to fourth have crossover from power splitter, the first to the 5th tortuous transmission line; The first removable insulating trip 122a width is greater than the width of the first tortuous transmission line 124.Upper corresponding the first to the 5th tortuous transmission line place of the first removable insulating trip 122a is provided with respectively the first hole 129a, the second hole 130a, the 3rd hole 131a, the 4th hole 132a and the 5th hole 133a.Described the first to the 5th projection width of hole on second direction X be respectively greater than the projection width of the first to the 5th tortuous transmission line, namely first shown in Fig. 3 to the horizontal width in the 5th hole respectively greater than the horizontal width of the first to the 5th tortuous transmission line.The first to the 5th hole is used separately as the impedance matching transformer of the first to the 5th tortuous transmission line.The first removable insulating trip 122a and the second removable insulating trip 122b are along first direction Y synchronizing moving, make first on it to the 5th hole respectively on the first to the 5th tortuous transmission line along first direction Y synchronizing moving, to adjust simultaneously the phase place of feeder network the first to the 6th output.
With reference to Fig. 3,5 and Fig. 6, the first fixed insulation sheet 121a and the second fixed insulation sheet 123a lay respectively at left side and the right side of the first removable insulating trip 122a, and the 3rd fixed insulation sheet 121b and the 4th fixed insulation sheet 123b lay respectively at left side and the right side of the second removable insulating trip 122b.The first fixed insulation sheet 121a and the second fixed insulation sheet 123a are between PCB dielectric-slab 100 and the first chassis 201, and the 3rd fixed insulation sheet 121b and the 4th fixed insulation sheet 123b are between PCB dielectric-slab 100 and the second chassis 202.The first fixed insulation sheet 121a is identical with shape and the structure of the 3rd fixed insulation sheet 121b, and the second fixed insulation sheet 123a is identical with shape and the structure of the 4th fixed insulation sheet 123b.The first fixed insulation sheet 121a and main power splitter 109, first to fourth have crossover from power splitter.
The first fixed insulation sheet 121a and the second fixed insulation sheet 123a and the first removable insulating trip 122a are positioned at same plane, and the 3rd fixed insulation sheet 121b and the 4th fixed insulation sheet 123b and the second removable insulating trip 122b are positioned at same plane.The outline of fixed insulation sheet and removable insulating trip has step to be changed, and the step variation of fixed insulation sheet and removable insulating trip cooperatively interacts, to limit the mobile range of removable insulating trip on first direction Y.In the process that removable insulating trip moves, do not contact with the fixed insulation sheet.The fixed insulation sheet rises and supports fixedly PCB dielectric-slab and chassis, and spacing effect is carried out in the motion of removable insulating trip.
With reference to Fig. 5, Fig. 5 has shown among Fig. 3 the cross-section structure along A-A, in this part, do not have the hole on the first removable insulating trip 122a and the second removable insulating trip 122b, the first removable insulating trip 122a and the second removable insulating trip 122b fill up respectively the space between the second tortuous transmission line 125 and the first chassis 201 and the second chassis 202.With reference to Fig. 6, Fig. 6 has shown among Fig. 3 that along the cross-section structure of B-B, in this part, the first removable insulating trip 122a and the second removable insulating trip 122b are porose, have filled up air between the 3rd tortuous transmission line 126 and the first chassis 201 and the second chassis 202.
Fig. 7 shows is when insulating trip moves in 10 port devices of Europatent WO 03/019723 phase place between adjacent output port to be adjusted the theory structure schematic diagram, the 3rd removable insulating trip 702a and the 4th removable insulating trip 702b are respectively in the both sides of linear transmission line 701, the structure of the 3rd removable insulating trip 702a is identical with the structure of the 4th removable insulating trip 702b, the 3rd removable insulating trip 702a is between linear transmission line 701 and the 3rd chassis, the 4th removable insulating trip 702b is (the 3rd chassis and the 4th chassis do not illustrate picture in the drawings) between linear transmission line 701 and the 4th chassis, as the 3rd removable insulating trip 702a and the 4th removable insulating trip 702b during from the A synchronizing moving to the B place, linear transmission line 701 two ends electrical length are changed to:
Wherein L is the distance that the 3rd removable insulating trip 702a and the 4th removable insulating trip 702b move, and λ is the air medium wavelength, ε
rBe the dielectric constant of the 3rd removable insulating trip 702a and the 4th removable insulating trip 702b, ε
0Be dielectric constant of air, electrical length changes the phase difference that causes and is:
The phase place at linear transmission line 701 two ends that from top formula as seen, cause when the 3rd removable insulating trip 702a and the 4th removable insulating trip 702b synchronizing moving changes with the 3rd removable insulating trip 702a and the 4th removable insulating trip 702b displacement linear.
Fig. 8 be in the present embodiment the first insulating trip 122a and 122b when the first tortuous transmission line 124 moves to adjacent output port between the theory structure schematic diagram adjusted of phase place, as the first removable insulating trip 122a and the second removable insulating trip 122b during from the A synchronizing moving to the B place, the first tortuous transmission line 124 two ends electrical length are changed to:
Wherein L is the distance that the first removable insulating trip 122a and the second removable insulating trip 122b move, and λ is the air medium wavelength, ε
rBe the dielectric constant of the first removable insulating trip 122a and the second removable insulating trip 122b, ε
0Be dielectric constant of air, electrical length changes the phase difference that causes and is:
The phase place at the first tortuous transmission line 124 two ends that from top formula as seen, cause when the first removable insulating trip 122a and the second removable insulating trip 122b synchronizing moving changes with the first removable insulating trip 122a and the second removable insulating trip 122b displacement linear.
Can find out from top formula (2) and formula (4), when the distance that moves when the identical removable insulating trip of dielectric constant was identical, the phase change value at described tortuous transmission line two ends was 3 times of phase change value at linear transmission line two ends.As everyone knows, the current feed phase of the tilt angled down of antenna array beam and aerial array adjacent radiation unit is poor linear, therefore, 7 port devices that propose when 7 port devices and the present embodiment according to the method among patent WO03/019723 design are during with identical aerial array electric connection, if removable insulating trip moves identical distance, the effective range of using so the antenna array beam angle of declination of 7 port devices that the utility model proposes is 3 times that use according to the antenna array beam angle of declination of 7 port devices of the design of the method among the patent WO 03/019723.In general, the aerial array of the suitable linear wave beam tilt angled down of the wave beam adjusting device that proposes among the patent WO 03/019723 little (having a down dip such as 10 degree), and the wave beam adjusting device that the utility model proposes not only is fit to linear wave beam tilt angled down little (having a down dip such as 10 degree) but also is fit to the aerial array that linear wave beam angle of declination (has a down dip such as 20 or 30 degree) greatly.
According to top principle, when the first removable insulating trip 122a and the second removable insulation 122b move down synchronously, signal can produce respectively a differential phase+△ during respectively through the 3rd tortuous transmission line 126, the second tortuous transmission line 125 and the first tortuous transmission line 124, and signal can produce an opposite differential phase-△ during respectively through the 4th tortuous transmission line 127, the 5th tortuous transmission line 128.
So the signal transmission of feeder network input port 110 to first output ports produces the differential phase of+3 △ through the first to the 3rd tortuous transmission line;
The signal transmission of feeder network input port 110 to second output ports 104 produces the differential phase of+2 △ through the second to the 3rd tortuous transmission line;
The signal transmission of feeder network input port 110 to the 3rd output ports 108 is through the 3rd tortuous transmission line, the differential phase of generation+△;
The signal transmission of feeder network input port 110 to the 4th output ports 116 is not through crossing tortuous transmission line, and the differential phase of generation is 0;
The signal transmission of feeder network input port 110 to the 5th output ports 120 is through the 4th tortuous transmission line, the differential phase of generation-△;
The signal transmission of feeder network input port 110 to the 6th output ports produces the differential phase of-2 △ through the 4th to the 5th tortuous transmission line;
When the first to the 6th output port of feeder network connected respectively the base-station antenna array of 6 antenna radiation units compositions, synchronizing moving the first removable insulating trip 122a and the second removable insulating trip 122b can make the antenna pattern downwards bevel beam.
By that analogy, the utility model can also be expanded according to identical principle.
The shape that it should be noted that the tortuous transmission line described in above-described embodiment only is a kind of special execution mode, and in other two embodiment of the present utility model, described tortuous transmission line can also adopt other two kinds of shapes, please refer to Fig. 9 and 10.The tortuous transmission line of second embodiment as shown in Figure 9, described tortuous transmission line by the first linear transmission line 141, first connect transmission line 142, the second linear transmission line 143, second connects transmission line 144 and the 3rd linear transmission line 145 is composed in series successively.Wherein, the first to the 3rd linear transmission line is arranged in order along the second direction X perpendicular to first direction Y.In the utility model embodiment, the first direction Y among Fig. 9 is for from top to bottom, and second direction X is for to turn left from the right side.It is not 90 ° angle that each section linear transmission line and second direction X place straight line have one, and each section linear transmission line equates with the angle of second direction X place straight line, i.e. the equal and opposite in direction of the first angle 1, the second angle 2 and the 3rd angle 3.First to second connects transmission line with the first to the 3rd linear transmission line successively end to end series connection.Adopt the tortuous transmission line of this shape, also can realize the technique effect similar to first embodiment.Preferably, described the first to the 3rd angle is more than or equal to 60 °.Based on this angular range, the transverse width of tortuous transmission line is unlikely to excessive, is conducive to taking up room of feeder network of the present utility model is controlled at rational size.
The tortuous transmission line of the 3rd embodiment as shown in figure 10, described tortuous transmission line by the first linear transmission line 91, the second linear transmission line 92, the 3rd linear transmission line 93 successively head and the tail connect to form.Wherein, the first to the 3rd linear transmission line is arranged in order along first direction Y.In the utility model embodiment, the first direction Y among Figure 10 is for from top to bottom.Each section linear transmission line has identical sharp angle with first direction Y place straight line, i.e. the equal and opposite in direction of the first angle 4, the second angle 5 and the 3rd angle 6 and be acute angle.Adopt the tortuous transmission line of this shape, also can realize the technique effect similar to first embodiment.
The aerial array feeding network that the utility model embodiment provides, have the large characteristics of the antenna pattern downwards bevel beam angular range of adjustment, while the utility model compact conformation, handling ease, cost is low, can directly apply to the adjustable antenna for base station of downwards bevel beam LINEAR CONTINUOUS on each working frequency range, in cell mobile communication systems, be with a wide range of applications.
The above embodiment has only expressed preferred implementation of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (18)
1. aerial array feeding network, comprise dielectric-slab, be distributed in feeder network on the dielectric-slab, and dielectric-slab at a distance of a segment distance and the chassis that be arranged in parallel and the removable insulating trip between dielectric-slab and chassis, described removable insulating trip can move back and forth along a first direction on feeder network, with the input of adjustment feeder network and the phase relation between at least one output, it is characterized in that the tortuous transmission line of multistage that described feeder network comprises a plurality of power splitters and is connected with power splitter.
2. aerial array feeding network according to claim 1, it is characterized in that, described tortuous transmission line comprises that at least two sections linear transmission lines connect transmission line with the section of being connected, described linear transmission line is arranged in order along the second direction perpendicular to first direction, and each section linear transmission line equates with the angle of second direction place straight line, connects transmission line with the end to end series connection of each section linear transmission line.
3. aerial array feeding network according to claim 2 is characterized in that, the angle of each section linear transmission line and second direction place straight line is more than or equal to 60 °.
4. aerial array feeding network according to claim 2 is characterized in that, the angle of each section linear transmission line and second direction place straight line is 90 °, i.e. each section linear transmission line and first direction place straight line parallel.
5. aerial array feeding network according to claim 1, it is characterized in that, described tortuous transmission line comprises at least two sections linear transmission lines, described linear transmission line is arranged in order along first direction place straight line, and each section linear transmission line equates with the angle of first direction place straight line, the successively end to end series connection of each section linear transmission line.
6. aerial array feeding network according to claim 5 is characterized in that, the angle of each section linear transmission line and first direction place straight line is acute angle.
7. according to claim 2 or 5 described aerial array feeding networks, it is characterized in that, the tortuous transmission line of corresponding each section place is provided with impedance transformation zone on the removable insulating trip, the material of the removable insulating trip in the described impedance transformation zone is removed, with the impedance matching transformer as tortuous transmission line.
8. aerial array feeding network according to claim 7 is characterized in that, described impedance transformation zone is positioned at a side of removable insulating trip.
9. aerial array feeding network according to claim 7 is characterized in that, described impedance transformation zone is for being positioned at the hole of removable insulating trip inside.
10. aerial array feeding network according to claim 7 is characterized in that, on the second direction perpendicular to first direction, the projection width in described impedance transformation zone is greater than the projection width of tortuous transmission line.
11. according to claim 2 or 5 described aerial array feeding networks, it is characterized in that, described power splitter is the one-to-two power splitter, it comprises a main power splitter and some from power splitter, the synthetic end of described main power splitter is the input of feeder network, output of main power splitter is electrically connected the input of a tortuous transmission line, and another output is electrically connected a synthetic end from power splitter; Each all is electrically connected with the input of a tortuous transmission line from an output of power splitter, and another output is as the output and the electric connection of exterior antenna array of feeder network; The output of the tortuous transmission line of part is electrically connected a synthetic end from power splitter, and the output of the tortuous transmission line of part is electrically connected as output and the exterior antenna array of feeder network.
12. aerial array feeding network according to claim 11 is characterized in that, also comprises the fixed insulation sheet, described fixed insulation sheet is fixed between dielectric-slab and the chassis.
13. aerial array feeding network according to claim 12, it is characterized in that, described fixed insulation sheet and removable insulating trip are positioned at same plane, its outline has step to be changed, the step variation of fixed insulation sheet and removable insulating trip cooperatively interacts, to limit the mobile range of removable insulating trip on first direction.
14. aerial array feeding network according to claim 12 is characterized in that, the synthetic end of main power splitter and part have crossover from output and the fixed insulation sheet of power splitter.
15. aerial array feeding network according to claim 11 is characterized in that, the relative both sides of main power splitter are distributed with from power splitter.
16. according to claim 2 or 5 described aerial array feeding networks, it is characterized in that, described chassis comprises the first chassis and the second chassis, and the first chassis and the second chassis lay respectively at the relative both sides of dielectric-slab.
17. aerial array feeding network according to claim 16, it is characterized in that, described removable insulating trip comprises the first removable insulating trip and the second removable insulating trip, the first removable insulating trip is between dielectric-slab and the first chassis, and the second removable insulating trip is between dielectric-slab and the second chassis; The first removable insulating trip is identical with the material of the second removable insulating trip, and shape is identical, and synchronizing moving.
18. according to claim 2 or 5 described aerial array feeding networks, it is characterized in that, each tortuous transmission line and removable insulating trip all have crossover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220338911 CN202695727U (en) | 2012-07-12 | 2012-07-12 | Antenna array feed network |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220338911 CN202695727U (en) | 2012-07-12 | 2012-07-12 | Antenna array feed network |
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| CN202695727U true CN202695727U (en) | 2013-01-23 |
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| CN 201220338911 Expired - Fee Related CN202695727U (en) | 2012-07-12 | 2012-07-12 | Antenna array feed network |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102760951A (en) * | 2012-07-12 | 2012-10-31 | 广东博纬通信科技有限公司 | Antenna array feed network |
| CN104505560A (en) * | 2014-12-12 | 2015-04-08 | 湖北日海通讯技术有限公司 | Phase adjusting device and phase adjusting unit |
-
2012
- 2012-07-12 CN CN 201220338911 patent/CN202695727U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102760951A (en) * | 2012-07-12 | 2012-10-31 | 广东博纬通信科技有限公司 | Antenna array feed network |
| CN102760951B (en) * | 2012-07-12 | 2014-11-05 | 广东博纬通信科技有限公司 | Antenna array feed network |
| CN104505560A (en) * | 2014-12-12 | 2015-04-08 | 湖北日海通讯技术有限公司 | Phase adjusting device and phase adjusting unit |
| CN104505560B (en) * | 2014-12-12 | 2018-01-12 | 湖北日海通讯技术有限公司 | Phase adjusting device and phase adjustment unit |
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