CN206211024U - Electrical tilt antenna feeder equipment - Google Patents

Abstract

The utility model provides a kind of electrical tilt antenna feeder equipment, including cavity and the feed circuit being contained in the cavity, and the input port and output port being connected with each end of the feed circuit, the feed circuit is including forming the first branch of microwave filter and forming the second branch of capacitance；Based on above-mentioned technical proposal, the utility model can realize low intermodulation in the case that loop is built-in.

Description

Electrical tilt antenna feeder equipment

Technical field

The utility model is related to mobile communication base station technical field of electric tilt antennae, and specifically, the utility model is related to one Plant electrical tilt antenna feeder equipment.

Background technology

In mobile communications network covering, antenna for base station is one of key equipment of overlay network, with user and network The high speed development of scale, electrical tilt antenna has been universal application, but existing remotely electricity tune control device generally with base station day Line is individually present, and user needs the external electricity on other antenna for base station to adjust controller and electricity to adjust control line when in use.Electricity regulation and control Line processed is also used for transmitting aerial signal simultaneously, and aerial signal is radiofrequency signal, therefore, electricity adjusts control line to may be simultaneously present two kinds Signal, i.e. radiofrequency signal and control signal.For solve the above problems, it is necessary to by electricity adjust controller and antenna integrated design, this Not only need for radiofrequency signal to be input to antenna, also need for control signal to be input to the device that in-built electrical adjusts controller simultaneously In.

In the prior art, adjust controller to be built in antenna electricity, at the same using radio frequency feed line simultaneous transmission radiofrequency signal and Control signal, simplifies the setting that electricity adjusts control system.Though this technology has many benefits, large-scale application product is but Few, the design difficulty that it is mainly loop is larger, and the stability of built-in loop intermodulation is poor.

Based on problem above, propose it is a kind of solve radiofrequency signal and control signal simultaneous transmission and isolate, and can be effective The technology for solving built-in loop intermodulation stability is very urgent.

Utility model content

The purpose of this utility model aims to provide radiofrequency signal and the feedback of control signal Mixed design of a kind of new low intermodulation Electric installation and feed method.

To achieve these goals, the utility model provides following technical scheme：

A kind of electrical tilt antenna feeder equipment, including cavity and the feed circuit that is contained in the cavity, and with it is described The input port and output port of each end connection of feed circuit, the feed circuit include being formed first point of microwave filter Road and the second branch of formation capacitance.

Further, the feed circuit is additionally included in the first branch and the second branch upstream is combined the 3rd of input Branch；And the input of the 3rd branch is connected with the input port, the output end connection first of first branch Output port, the output end of the second branch connects the second output port.

Wherein, the input port and output port are reached beyond cavity.

Further the feed circuit is by strip lines configuration circuit realiration.

Further, the feed circuit is realized by double-sided copper-clad pcb board.

Wherein, the double-sided copper-clad pcb board is provided with the via for turning on two-sided layers of copper.

Wherein, first branch includes main branch and some open circuit details extended to both sides from the main branch, It is described open circuit detail latter end it is parallel with the main branch with realizes couple.

Wherein, the open circuit detail is L-type open circuit detail.

Wherein, first branch also includes the medium block laid up and down relative to the open circuit detail.

Wherein, the double-sided copper-clad pcb board for forming second branch includes upper layers of copper and lower layers of copper；The upper layers of copper is opened up First cut-off, the lower layers of copper opens up the second cut-off, and first cut-off and the second spacing separated are λ/4, wherein being radio frequency The wavelength of signal.

Wherein, first cut-off is away from the output port；Second cut-off is near the output port；And institute State the first cut-off and via is set away from the side of the output port, and in the described second cut-off near the output port Side sets via.

Further, first branch is in the same plane with the second branch, and is arranged on the two of the cavity Side.

The utility model also provides a kind of method, and its technical scheme is as follows：

A kind of method of electrical tilt antenna feed, comprises the following steps：Obtain comprising radiofrequency signal and Electromechanical Control signal Mixed signal；The high frequency radio signals in the mixed signal are filtered to export comprising low frequency radio frequency signal and Electromechanical Control signal First separation signal；The Electromechanical Control signal and low frequency radio frequency signal isolated in the mixed signal are penetrated with exporting comprising high frequency Second separation signal of frequency signal；The described first phase shifting control module for separating signal downlink to antenna；Described second separates letter Number come downwards to the radio-frequency module of antenna.

Also include step：To power feeding module feed-in mixed signal.

Wherein, the filtering method of the high frequency radio signals in the mixed signal is：First branch, described first point are set Road is included for suppressing the microwave filter that the high frequency radio signals pass through.

Preferably, the microwave filter is realized by microstrip line.

Wherein, in the mixed signal Electromechanical Control signal and the partition method of low frequency radio frequency signal be：Set second Branch, second branch includes the capacitance for isolated DC signal and low frequency signal.

Preferably, the capacitance is realized by microstrip line.

Wherein, the first separation signal and the second separation signal carry out downlink transfer by feed line respectively.

Compared to existing technology, scheme of the present utility model has advantages below：

(1) electricity is adjusted controller to be built in antenna by the utility model, while using radio frequency feed line simultaneous transmission radiofrequency signal And control signal, electricity regulation and control cable processed is on the one hand saved, reduce engineering cost；On the other hand simplify electricity and adjust control system Setting.

(2) the utility model in-built electrical tune control module can in advance set the relevant information of antenna in production, Such as frequency range, model, the information of the angular region that has a down dip, this can be reduced in actual use because the error brought of regulation, and The problems such as causing antenna stabilization difference.

(3) the utility model realizes whole circuit using double-sided copper-clad pcb board, on the one hand minimizes electrical tilt antenna, On the other hand can accomplish to obtain good matching in frequency range very wide；Further, built-in loop intermodulation is solved The problem of stability.

The additional aspect of the utility model and advantage will be set forth in part in the description, and these are by from following description In become obvious, or by it is of the present utility model practice recognize.

Brief description of the drawings

The above-mentioned and/or additional aspect of the utility model and advantage from the following description of the accompanying drawings of embodiments will Become substantially and be readily appreciated that, wherein：

Fig. 1 is the feed section structural representation of the utility model electrical tilt antenna feeder equipment.

Fig. 2 is the structural representation of the feed section one of which embodiment of the utility model electrical tilt antenna feeder equipment.

Fig. 3 is the strip lines configuration portion of the feed section one of which embodiment of the utility model electrical tilt antenna feeder equipment Divide schematic diagram, and the cut-off part of the second branch is shown.

In figure：The via of 1 first input port 2

The L-type of 3 the 3rd branch 4 open circuit detail

5 L-types open circuit detail 6 L-type open circuit detail

The medium block of 7 first output port 8

9 side by side via 10 separate

The cavity of 11 second output port 12

The branch of 13 aperture 14 first

15 second branches

Specific embodiment

Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein ad initio Same or similar element or element with same or like function are represented to same or similar label eventually.Below by ginseng The embodiment for examining Description of Drawings is exemplary, is only used for explaining the utility model, and can not be construed to of the present utility model Limitation.

With reference to Fig. 1, Fig. 1 is the feed section structural representation of the utility model electrical tilt antenna feeder equipment, such as Fig. 1 institutes Show, including be arranged on first input port 1 outside cavity 12, the first output port 7 and the second output port 11, be arranged on chamber The first branch 14, the second branch 15 and the 3rd branch 3 inside body 12.

The structure distribution mode of each part mentioned above is as follows：

First branch 14, the second branch 15 and the 3rd branch 3 are vacantly arranged inside cavity 12 respectively, and are electrically connected respectively The signal transmission port on cavity 12 is passed to, the first branch 14 is electrically connected with the first output port 7, the second branch 15 is defeated with second Exit port 11 is electrically connected, the 3rd branch 3 is electrically connected with first input port 1, wherein, it is electrical connection to be electrically connected.

3rd branch 3 be the first branch 14, the second branch 15 in upstream combining importation, by the first branch 14 and the Two branches 15 are connected in parallel realization.

Wherein, the first branch 14 is used to realize microwave filtering that the second branch 15 to be used to realize that capacitive coupling is connected.

Wherein, first input port 1, the first output port 7 and the second output port 11 are respectively for insertion into feeder line.

With reference to Fig. 2, Fig. 2 is the structure of the feed section one of which embodiment of the utility model electrical tilt antenna feeder equipment Schematic diagram.As shown in Fig. 2 including the L-type open circuit detail 4,5,6 being laid in the first branch 14 and the medium for being designed with aperture 13 Block 8；It is laid in cut-off 10 in the second branch 15, side by side via 9；It is placed in the first branch 14, the second branch in cavity 12 15th, the 3rd branch 3；It is arranged at first input port 1, the first output port 7, the second output port 11 outside cavity 12.

In the present embodiment, all feed circuits are strip lines configuration circuit, realize and are set with the integrated of antenna structure Meter.

Preferably, feed circuit is designed using double-sided copper-clad pcb board in the present embodiment, further reduces feed circuit institute The volume for accounting for, more makes Project Cost Control in acceptable scope, solves the problems, such as built-in loop intermodulation stability.

Further, the double-sided copper-clad pcb board is provided with the via 2 for turning on two-sided layers of copper, between the via 2 is distributed Set away from the electrical performance demands according to antenna for base station, its energy of resistance to power that can effectively reduce return loss and enhancing device Power.

Wherein, the first branch 14 includes main branch and some open circuit details extended to both sides from the main branch, institute The latter end for stating open circuit detail is parallel with the main branch to realize coupling.Wherein, it is described open circuit detail include L-type open circuit detail 4, 5、6.According to specific applicable cases, under the application for adapting to different frequency range, the length of the L-type open circuit detail 4,5,6 can be with It is not quite similar, and the quantity and distributing position of its L-type open circuit minor matters are indefinite, by what is laid up and down relative to open circuit detail Medium block 8 is determined.Wherein, L-type open circuit detail 4,5,6 is high frequency open-circuit line.

Above-mentioned L-type open circuit detail 4,5,6 and medium block 8 constitute microwave filter in the first branch 1, for filtering Except high frequency radio signals.Preferably, the microwave filter is low pass filter.

During specific implementation, medium block 8 can be using individual layer or bilayer.Specifically, the medium block 8 of individual layer can be distributed and complete It is covered in the top of the first branch 14 or can be distributed and disk of boarding at the nursery is in the lower section of the first branch 14；Double-deck medium block 8 includes Top dielectric block and layer dielectric block, first branch 14 are interposed between top dielectric block and layer dielectric block.

Further, due in the environment residing for first branch 14 existing microwave dielectric material have air again, electricity Magnetic wave can produce back wave when being transmitted in the first branch 14 on two kinds of interfaces of different medium, so as to influence the first branch 14 impedance matching.Specific aperture 13 is opened up on the medium block 8 so that the back wave produced on different medium interface Cancel each other, so as to realize impedance matching.The distributing position of the aperture 13, shape and number can be adjusted according to actual conditions Whole, those skilled in the art can determine the position of number, shape and the distribution of corresponding aperture 13 according to the purpose needed for it Put, although non-detail is provided herein, do not influence those skilled in the art to carry out technology realization according to explanation herein.

Wherein, medium block 8 is the couplant of the first branch 14, and the material of its position being distributed or selection will influence to believe The phase of number transmission, and to the design of medium block 8 according to Principle of Antenna, those skilled in the art can be according to the purpose needed for it Designed accordingly, although non-detail is provided herein, do not influence those skilled in the art to carry out skill according to explanation herein Art is realized.Preferably, medium block 8 is low-loss microwave dielectric material block of the dielectric constant more than 1.

It should be noted that the regular shape of medium block 8 is that preferred embodiment, it can also use it in accompanying drawing 2 His regular or irregular shape.

Wherein, the second branch 15 is formed by the double-sided copper-clad pcb board including upper layers of copper and lower layers of copper.With reference to Fig. 3, wherein, Layers of copper opens up the first cut-off 101 on described, and the second cut-off 102 is opened up in the lower layers of copper.First cut-off 101 and second Circuit length (i.e. two distances of cut-off) difference between cut-off 102 just can be applicable to different frequency ranges, and the length is generally L =λ/4, wherein λ are the wavelength of radiofrequency signal, can be really sized according to radiofrequency signal frequency range in practical application；Wherein, First cut-off 101 is laid in away from the output port side, and second cut-off 102 is laid near the output end Mouth side.

During specific implementation, second branch 15 forms capacitance by laying cut-off 10 on feed circuit, its Capacitively coupled property is make use of, but, actually capacitive coupling can cause too high return loss, in the present embodiment, be The resistance to power capability of return loss and enhancing device is reduced, respectively in the first cut-off 101 and second 102 any side cloth of cut-off If via 9 side by side, the via side by side 9 is parallel with the fracture of cut-off 10.Preferably, it is described first cut-off 101 and be drained through Hole 9 is arranged far from the side of the output port, and the via side by side 9 of second cut-off 102 is positioned close to the output Port side.

Cut-off 10 makes second branch form capacitance at the two of above-mentioned design, isolated Electromechanical Control signal and Low frequency radio frequency signal.

Wherein, the 3rd branch 3 is the part of the first branch 14 and the upstream combining input of the second branch 15.Mixed signal is from One input port 1 is input into, and after the 3rd branch 3, branch respectively enters the first hair branch 15 of road 14 and second, Transmitted while signal can realize radiofrequency signal and Electromechanical Control signal by the first branch 14 with the second branch 15 and isolated.

Wherein, the radiofrequency signal and Electromechanical Control signal by it is synchronous or it is asynchronous be fed into the feeder equipment, it is described Radiofrequency signal is generally divided into high frequency radio signals and low frequency radio frequency signal, and the high frequency radio signals mainly apply to communication, institute State less, the generally basic control signal of frequency range that low frequency radio frequency signal applies to communication；The Electromechanical Control signal is by straight Stream signal is produced.

Preferably, in the present embodiment, first branch 14 and the second branch for forming capacitance of microwave filter are formed 15 is in the same plane, and is arranged on the both sides of cavity 12, can effectively reduce the size and volume size of cavity 12.This Embodiment feeder equipment can adjust the electrical tilt antenna that centralized control unit drives to the electricity by being integrated in base station, especially in-built electrical The electrical tilt antenna of controller is adjusted, is fed, its feeding classification is as follows：

In above-mentioned application scenarios, base station can include that radiofrequency signal and the mixing of Electromechanical Control signal are believed to feeder equipment feed-in Number.

The first input port 1 that 3rd branch 3 is connected is used for mixed signal of passing through；First branch 14 connected first The first separation signal that output port 7 is used for after current separation；The second output port 11 that second branch 15 is connected is used to lead to After row is separated second separates signal.

Specifically, the 3rd branch 3 can transmit radiofrequency signal and the Electrical Control that the first input port 1 for communicating therewith is input into Signal processed, the input signal can be transmitted by different approach.

First branch 14 filters high-frequency radio frequency and believes via the microwave filter that L-type open circuit detail 4,5,6 and medium block 8 are constituted Number, obtain first and separate signal, i.e. low frequency radio frequency signal and Electromechanical Control signal, described first to separate signal final by with first The first output port output of the connection of branch 14.

Second branch 15 draws the second separation by capacitance coupling isolation low frequency radio frequency signal and Electromechanical Control signal Signal, i.e. high frequency radio signals, the radiofrequency signal of second branch 15 are final defeated by the second output port 11 for communicating therewith Go out.

The signal transmission of the output of the first output port 7 to corresponding phase shifting control module, the output of the second output port 11 To radio-frequency module, the first separation signal and the second separation signal carry out downlink transfer to signal transmission by feed line respectively. The present embodiment feed circuit realizes the separation of multi-signal.

Moreover, electricity adjusts the feeder equipment of controller and the present embodiment can be built in antenna, feeder equipment and Electricity adjusts controller integrated design.

This integrated design can greatly save electricity and adjust control line, reduce project installation expense, simplify electricity and adjust control system Set, the installation of original electrical tilt antenna is reduced to the installation of non-electrical tilt antenna.Wherein, built-in electricity tune controller can be in day When line is produced, the relevant information of antenna is set in advance, such as：Frequency range, model, the angular region that has a down dip etc..

The above is only some embodiments of the present utility model, it is noted that for the common skill of the art For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and Retouching also should be regarded as protection domain of the present utility model.

Claims (11)

1. a kind of electrical tilt antenna feeder equipment, including cavity and the feed circuit being contained in the cavity, and with the feedback The input port and output port of each end connection of circuit, it is characterised in that the feed circuit includes forming microwave filtering First branch of device and the second branch of formation capacitance.

2. electrical tilt antenna feeder equipment according to claim 1, it is characterised in that the feed circuit is additionally included in first Branch and the second branch upstream are combined the 3rd branch of input；And the input and the input port of the 3rd branch It is connected, the output end of first branch connects the first output port, and the output end of the second branch connects the second output port.

3. electrical tilt antenna feeder equipment according to claim 2, it is characterised in that the feed circuit is by strip lines configuration Circuit realiration.

4. electrical tilt antenna feeder equipment according to claim 3, it is characterised in that the feed circuit is by double-sided copper-clad Pcb board is realized.

5. electrical tilt antenna feeder equipment according to claim 4, it is characterised in that the double-sided copper-clad pcb board is provided with Turn on the via of two-sided layers of copper.

6. electrical tilt antenna feeder equipment according to claim 4, it is characterised in that first branch include main branch and Some open circuit details extended to both sides from the main branch, the latter end of the open circuit detail is parallel with the main branch with reality Now couple.

7. electrical tilt antenna feeder equipment according to claim 6, it is characterised in that the open circuit detail is that L-type is opened a way branch Section.

8. electrical tilt antenna feeder equipment according to claim 6, it is characterised in that first branch also include relative to The single-layer medium block laid above or below the open circuit detail；Or, by it is described open circuit detail it is sandwiched by top dielectric block, under The two-layered medium block that layer medium block is constituted.

9. electrical tilt antenna feeder equipment according to claim 4, it is characterised in that form the two-sided of the second branch and cover Copper pcb board includes upper layers of copper and lower layers of copper；The upper layers of copper opens up the first cut-off, and the lower layers of copper opens up the second cut-off, described The spacing of the first cut-off and the second cut-off is λ/4, and wherein λ is the wavelength of radiofrequency signal.

10. electrical tilt antenna feeder equipment according to claim 9, it is characterised in that first cut-off is away from described defeated Exit port；Second cut-off is near the output port；And set away from the side of the output port in the described first cut-off Via is put, and via is set near the side of the output port in the described second cut-off.

11. electrical tilt antenna feeder equipments according to claim 1, it is characterised in that first branch and the second branch It is in the same plane, and it is arranged on the both sides of the cavity.