CN1805214A - Beam forming network with continuously variable differential phase - Google Patents
Beam forming network with continuously variable differential phase Download PDFInfo
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- CN1805214A CN1805214A CN 200610033165 CN200610033165A CN1805214A CN 1805214 A CN1805214 A CN 1805214A CN 200610033165 CN200610033165 CN 200610033165 CN 200610033165 A CN200610033165 A CN 200610033165A CN 1805214 A CN1805214 A CN 1805214A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/18—Phase-shifters
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- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
Abstract
The invention relates to a wave beam construction network with continuous variable differential phase, which comprises: a metallic chamber which contains power divider and several phase shifters. Wherein, said power divider comprises a main power divider and several sub power divider. Each phase shifter is distributed at two sides inside the metallic chamber according to the different direction of phase shift; a insulator is arranged between them connecting each phase shifter; the insulator is connected to a medium rod; the metallic chamber has a operation hole for operating said medium rod. The invention can be constructed integrated, while it can realize phase shift and the power amplitude weighting, with simple structure, small volume, simple producing process and lower cost. In addition, the metals of movable and fixed parts of phase shifter use untouched capacitor coupling signal transmission to restrain the passive product and the high power fire strike.
Description
[technical field]
The present invention relates to a kind of beam-forming network, in particular for the beam-forming network of a kind of continuously variable differential phase of cell mobile communication systems antenna for base station.
[technical background]
Antenna for base station is the critical component of digital cellular mobile communication systems.Antenna for base station carries out the wireless signal covering to the cellular cell (abbreviation service district) of present position; Simultaneously to other air interference (abbreviation co-channel interference) with sub-district (abbreviation co-frequency cell) of same operating frequency suppresses from a distant place.The method that realizes above-mentioned functions is reasonably to adjust the beam position of antenna for base station elevation radiation patytern, makes it point to the angle and does suitable inclination (also claiming downwards bevel beam) down in the horizontal line direction.Because in the practical application scene of many complexity, the scope that signal covers and the situation of co-channel interference are constantly changing, therefore the angle (also claiming beam scanning) of downwards bevel beam also needs in time frequent variation and the locational continuous variation at the angle, and this antenna is called continuously adjustable wave beam electrical down-tilting antenna for base station.
The realization principle of continuous adjustable wave beam electrical down-tilting antenna for base station is from well-known Phased Array Radar Antenna beam scanning principle.In the prior art, at United States Patent (USP) (US6,611,230) be described in detail this implementation procedure in " Phased arrayantenna having phase shifters with laterally spaced phase shift bodies ", seen also theory diagram shown in Figure 1.
In Fig. 1, Phased Array Radar Antenna 39 (or continuously adjustable wave beam electrical down-tilting antenna for base station) mainly is made up of antenna radiation unit array 31 and beam-forming network 37.Aerial array 31 by etc. physical separation n radiating element 32a, 32b, 32c ..., 32n forms; Beam-forming network 37 by phase shifter 34a, the 34b of a power splitter that is divided into n (abbreviation when being in emission state, full name are the synthetic and distribution network of power) and n variable phase, 34c ..., the 34n composition.When n phase shifter 34a, 34b, 34c ..., the phase place output of 34n is Φ according to this
0, Φ
0+ Δ, Φ
0+ 2 Δs ..., Φ
0+ (n-1) during Δ (promptly satisfy differential phase relation), the beam position of directional diagram produces a physical angle skew (scan or have a down dip) amount θ, and its pass is: Δ=(2 π d/ λ) sin θ.Wherein d is that interval, the λ of adjacent radiation unit are operation wavelength, Φ
0Be the intrinsic initial phase of each element transmission channel, it can realize each element transmission channel Φ mutually by joining of transmission line (as cable)
0Unanimity.Obviously, angle of declination θ is only relevant with the differential phase Δ.Realize the continuous variable of equal difference branch phase delta (Δ can just can be born) and realization Δ, then angle of declination θ is adjustable continuously.The continuous variation of differential phase Δ is finished by beam-controller 38.
Therefore, beam-forming network 37 is keys that wave beam electrical down-tilting antenna for base station is realized.
Regrettably the phase shifter 34 that adopts in beam-forming network 37 of Phased Array Radar Antenna is digital phase shifters of quantification formula, and it involves great expense, and corresponding beam-controller 38 is also complicated and expensive; The digital phase shifter that quantizes formula simultaneously can bring the sensing deviation of downwards bevel beam angle and can not continuously change the angle that has a down dip, back one shortcoming is to remedy by the combination of thousands of phase shifters and antenna radiation unit and the correction of algorithm in phased array antenna, and for the antenna for base station that several radiating elements are only arranged, error in pointing is difficult to remedy.
For the beam-forming network 37 of realizing Fig. 1, but at first need a kind of cheapness and phase place continually varying phase shifter, in the prior art, United States Patent (USP) (US2 in nineteen fifty, 502,359) but in a kind of like this phase place continually varying phase shifter has been proposed, as shown in Figure 2.The section perspective view of looking along the 3-3 direction among Fig. 2 as shown in Figure 3.
Referring to Fig. 2 and Fig. 3: " U " type transmission line is formed by 11,12,13,14,15, wherein adopts 11,12 of hollow metal cylinder structure to be standing part, and the left end of the two links to each other with two coaxial line joints 24 on metallic cavity 19 sidewalls respectively; Adopt " U " molded lines 14,13,15 of metal solid cylinder structure to insert respectively in the 11 and 12 right-hand member hollow bodies.By a machine driving bar 21, interlock body 16 and 17 and 18, and then promote 14,13,15 side-to-side movements, wherein 17,18 is non-conductive insulating part.Because the continuous variation of the total length of 11,14,13,15,12 " U " type transmission lines of forming causes the phase place of transmission signals between two coaxial line joints 24 corresponding continuous the variation to occur, has promptly realized phase shift function.
One of shortcoming of above-mentioned phase shifter is: in use repeatedly, be difficult to guarantee the transmission line 11 fixed or 12 with removable transmission line 14,13,15 between good the contact, and this non-mode that is fastenedly connected between two metals spark phenomenon may occur under the high power situation, is difficult to simultaneously avoid because the passive intermodulation product that bad contact causes.
Two of the shortcoming of above-mentioned phase shifter is: columned transmission line 11,14,13,15,12 is in order to satisfy certain impedance operator, and the gauge H of corresponding cavity 19 is bigger.
Three of the shortcoming of above-mentioned phase shifter is: when phase shifter is applied to similar continuously adjustable wave beam electrical down-tilting antenna for base station, usually need adopt a plurality of phase shifters integrated simultaneously, so, because the relation of topology layout, columned transmission line 11 and 12 cavity ring are not easy to machining, adopt die production also to be not easy to releasing process.
Three example application of shortcoming is at open source literature Crone, G.A.E.; Rispoli, F.; Wolf, H.; Clarricoats, P.J.B.; " Technology advances in reconfigurable contoured beamreflector antenna in Europe " .proc.of 13-th AIAA International Conference onCommunications Satellite Systems, 1990, can see among the pp.255-263: according to the description of Fig.10 in the above-mentioned document, the structural representation of a variable power splitter example of its realization as shown in Figure 4.
Referring to Fig. 4, input signal is decomposed into 54b and 54c two tunnel from port 51 through the 54a arm of the power splitter 54 of one-to-two, more respectively through excessive " U " type phase shifter 55 and 56, is connected to two inputs 58 and 59 of 3dB branch line directional coupler 57., layout in opposite directions a pair of " U " type phase shifter 55 and 56 identical when structure links when mobile in the same direction, a phase shifter will produce positive differential phase, another phase shifter will produce negative differential phase, so, according to well-known microwave network principle, finally will realize the continuous variation of power-division ratios, and respective phase is exported and is kept invariable at two outputs 52 and 53 of branch line directional coupler 57.As can be seen, use 2 " U " type phase shifters in this example, correspondingly 54b and 54c or 58 and 59 need whole processing, and cavity ring cross section is wherein obviously made troubles to processing.
In addition, electrical down-tilting antenna for base station for n path radiation antenna element composition, the continuous adjustable needs of realization wave beam are n-1 the beam-forming network that element of phase shifter is formed at least, and produce a series of differential phase Δs, 2 Δs ..., (n-1) Δ, so, if if, all will limit its practical application owing to it is complicated and expensive because the range of phase shift difference a plurality of phase shifter dimensional structures occur or adopts a plurality of complicated mechanical transmission devices.
[summary of the invention]
Purpose of the present invention will overcome above-mentioned the deficiencies in the prior art exactly, a kind of beam-forming network that comprises a plurality of phase shifters at interior integrated formula continuously variable differential phase is provided, form the differential phase output of multichannel continuous variable simultaneously, and the power level of multiple signals can be constant amplitude (not weighting of amplitude) or not constant amplitude (amplitude weighting) output, and guarantee that it is simple and reliable for structure, dimension volume is little, manufacturing is simple, with low cost, can directly apply to continuously adjustable wave beam electrical down-tilting antenna for base station.
The objective of the invention is to be achieved through the following technical solutions:
The beam-forming network of continuously variable differential phase of the present invention, the power splitter group that is divided into two and the some phase shifters that comprise metallic cavity and be positioned at metallic cavity, the power splitter group includes a main power splitter and some from power splitter, each output of described main power splitter all is electrically connected the input of a phase shifter, the output of part phase shifter and a synthetic end from power splitter are electrically connected, each all electrically connects with the input of a phase shifter from an output of power splitter, the synthetic end of another output and described main power splitter all is electrically connected to outside the metallic cavity, wherein, described each phase shifter is laid in both sides in the metallic cavity respectively according to the both forward and reverse directions difference of phase shift, be provided with the insulating part that is connected with each phase shifter between the phase shifter of both sides, be provided with dielectric rod on the insulating part, described metallic cavity is provided with the handle hole for this dielectric rod of operation.
Described power splitter group also can comprise a preposition power splitter, and the synthetic end of an one output and described main power splitter is electrically connected, and its another one output and synthetic end then are electrically connected to outside the metallic cavity.
The both sides of described insulator are provided with some outstanding anchor clamps with bayonet, and the moveable part that described anchor clamps block described each phase shifter is to realize being connected between insulator and the phase shifter.
Described dielectric rod and insulator physical connection are also stretched out this handle hole from a side of insulator.
Described phase shifter comprises removable transmission line and a pair of fixed transmission lines of using as input and output side respectively, described removable transmission line integral body is " U " type, each fixed transmission lines one end is provided with the slotted eye of lengthwise, two arms of described removable transmission line place respectively in the slotted eye of each fixed transmission lines, described removable transmission line two arms are placing each fixed transmission lines (411, the cross section of the part in the slotted eye 413) is all rectangular, and the cross section at each constant transmissions line groove hole place is has and only have a limit removed rectangular box-like.
Described removable transmission line does not contact to keep with the capacitive coupling transmission signals with described fixed transmission lines.
The surface-coated of described removable transmission line has high temperature resistant and anti-high-power overcoat.
Described overcoat is a polytetrafluoroethylene.
Two internal faces of the metallic cavity parallel with " U " profile of described phase shifter are provided with lug boss in non-projection place of " U " type parts.
In two internal faces of the pairing metallic cavity of " U " profile of phase shifter, two inner wall surface position projectioies of the pairing metallic cavity of the described relatively fixed transmission lines in two inner wall surface positions of the pairing metallic cavity of described removable transmission line.
Compared with prior art, the invention has the advantages that: comprise all power splitters and phase shifter and realized that at interior beam-forming network structure is integrated, when realizing phase shift, realized special power magnitude weighting again, and simple and reliable for structure, dimension volume is little, manufacturing is simple, with low cost.Simultaneously, the movable part of phase shifter and the metal of standing part have adopted contactless capacitively coupled signal transmission, thereby have suppressed passive intermodulation product and high power spark phenomenon.
[description of drawings]
Fig. 1 is the principle schematic of Phased Array Radar Antenna in the prior art;
Fig. 2 is the schematic diagram of " U " type phase shifter in the prior art;
Fig. 3 is the figure of drop shadow effect of 3-3 section among Fig. 2;
Fig. 4 is the synthetic planar structure schematic diagram with distribution network of power in the prior art;
Fig. 5 is improved " U " element of phase shifter three-dimensional structure schematic diagram among the present invention;
Fig. 6 is the principle schematic of the first embodiment of the present invention;
Fig. 7 is the structural representation of first embodiment Fig. 6 correspondence, and wherein metallic cavity is broken away;
Fig. 8 is a 8-8 generalized section in Fig. 5 or Fig. 7 structure;
Fig. 9 is a 9-9 generalized section in Fig. 5 or Fig. 7 structure;
Figure 10 is the generalized section of second example structure, and wherein metallic cavity is broken away;
Figure 11 is the generalized section of the 3rd example structure, and wherein metallic cavity is broken away;
Figure 12 is a remodeling schematic diagram of Fig. 8 structure;
Figure 13 is another remodeling schematic diagram of Fig. 8 structure.
[embodiment]
The present invention is further illustrated below in conjunction with drawings and Examples:
First embodiment:
See also Fig. 6 and Fig. 7, beam-forming network 70 integrated designs of continuously variable differential phase of the present invention in metallic cavity 108 inside.Comprising:
By 4 power splitters is preposition power splitter 71, main power splitter 72 and the power splitter group formed from power splitter 73,74; 4 phase shifters 81,82,83,84; An insulating part 111; A dielectric rod 110; 6 external-connected ports 60,61,62,63,64,65.
In the described power splitter group, preposition power splitter 71 is by strip line 221,222,223 form, and strip line 221 is as synthetic end, strip line 222,223 as output, the signal allocation of strip line 221 is to 222,223 two arm outputs of strip line, and is well-known, strip line 221,222,223 separately length and width have determined the desired power distribution ratio, have also determined the impedance matching property on the particular job frequency band;
Similarly, main power splitter 72 is by strip line 223,224, and 225 form, strip line 223 is as synthetic end, strip line 224,225 is as output, and the signal allocation of strip line 223 is to strip line 224,225 2 arm outputs, strip line 223,224,225 separately length and width have also determined impedance matching property on its desired power distribution ratio and the particular job frequency band;
Equally, from power splitter 73 by strip line 241,242,243 form, and strip line 241 is as synthetic end, strip line 242,243 as output, the signal allocation to 242 of strip line 241 and 243 2 arm outputs, strip line 241,242,243 separately length and width have also determined impedance matching property on its desired power distribution ratio and the particular job frequency band;
At last, by strip line 244,245,246 form from power splitter 74, strip line 244 is as synthetic end, strip line 245,246 is as output, and the signal allocation of strip line 244 is to strip line 245,246 2 arm outputs, strip line 244,245,246 separately length and width have also determined impedance matching property on its desired power distribution ratio and the particular job frequency band.
Described each phase shifter 81,82,83,84 is laid in both sides in the metallic cavity respectively according to the both forward and reverse directions difference of phase shift.
Similarly, phase shifter 82 is by removable transmission line 412 and use strip line 225 respectively, 244 fixed transmission lines 411 as input and output, 413 form, and phase shifter 82 is realized the output strip line 225 of main power splitter 72 and being electrically connected so that transmit interconnection from the synthetic end strip line 244 of power splitter 74;
Equally, phase shifter 83 is by removable transmission line 412 and use strip line 243 respectively, 251 fixed transmission lines 411,413 compositions as input and output, phase shifter 83 is realized from the output strip line 243 of power splitter 73 and being electrically connected so that transmit interconnection of strip line 251;
At last, phase shifter 84 is by removable transmission line 412 and use strip line 245 respectively, 252 fixed transmission lines 411,413 compositions as input and output, phase shifter 84 is realized from the output strip line 245 of power splitter 74 and being electrically connected so that transmit interconnection of strip line 252.
Above-mentioned 4 phase shifters 81,82,83,84 adopt the structure that is disclosed among Fig. 5:
Each fixed transmission lines 411,413 one end is provided with the slotted eye of lengthwise, and the cross section at its slotted eye place is has and only have a limit removed rectangular box-like, and just as little " u " type, the cross section of its remainder then can be rounded or square etc.The cross section of two arms of described removable transmission line 412 is all rectangular, places respectively in the slotted eye of each fixed transmission lines 411,413, and the cross section that is connected in the interlude between 412 liang of arms of removable transmission line then can be rounded, rectangle etc.
Performance equivalence for cylindrical transmission line among the impedance operator that guarantees removable transmission line 412 transmission line when mobile among the present invention and Fig. 2,412 liang of arms of described removable transmission line need be positioned described fixed transmission lines 411, in 413 rectangle frame promptly little " u " the type groove, and the top edge of removable transmission line 412 must not protrude in the top edge of little " u " type groove of fixed transmission lines 411,413.
In order to suppress the passive intermodulation product of phase shifter, removable transmission line 412 adopts non-contacting capacitive coupling transmission signals with fixed transmission lines 411,413.
In order to limit removable transmission line 412 and fixed transmission lines 411,413 relative position, simultaneously in order to realize the high power capacity of phase shifter, in the surface-coated of removable transmission line the high temperature resistant and anti-high-power overcoat of one deck, this overcoat can adopt known polytetrafluoroethylene as dielectric material.So, little " u " type groove size that can come snugly designs fix transmission line 411,413 according to the outer profile size and the overcoat thickness of removable transmission line 412.
In conjunction with Fig. 5, Fig. 7 and Fig. 8, non-projection place of " U " type parts at two internal faces of the parallel metallic cavity 108 of " U " of phase shifter profile is provided with lug boss 421, with respect to original cavity inner wall position 422, the inner wall position 421 of projection helps isolating the signal coupling between parallel fixed transmission lines 411 and the fixed transmission lines 413, in other words, under the situation that equivalent signals is isolated, distance can further between fixed transmission lines 411 and the fixed transmission lines 413, so, under the prerequisite that guarantees electrical property, can dwindle the volume of cavity 108.
In conjunction with Fig. 5, Fig. 7 and Fig. 9, the position 423 of inner wall surface up and down of removable transmission line 412 pairing metallic cavity 108 is with respect to fixed transmission lines 411, the position of inner wall surface up and down 422 projectioies of 413 pairing metallic cavity 108, so, the change that can compensate the characteristic impedance that brings because removable transmission line 412 cross sections diminish is big, and compensation is because the impedance operator sudden change that transition produces between fixed transmission lines 411,413 and the removable transmission line 412.
In conjunction with Fig. 5, Fig. 7, Figure 12 and Figure 13, described fixed transmission lines 411 ' and removable transmission line 412 ' are collapsible to be rectangle structure, at this moment, as long as the right flank of removable transmission line 412 or upper side do not exceed fixed transmission lines 411 ' rectangular box-like right hand edge or top edge, can design the phase shifter that satisfies requirement on electric performance equally, so, the thickness H of metallic cavity 108 can further dwindle.
Consult Fig. 7, described 6 external-connected ports 60,61,62,63,64,65 all are arranged on the shell of metallic cavity 108, are respectively the synthetic end of power 60, first distribution end 61, second distribution end 62, the 3rd distribution end 63, the 4th distribution end 64 and the 5th distribution end 65.
The synthetic end strip line 221 of preposition power splitter 71 is electrically connected to the synthetic end of power 60, the first distribution end 61, second distribution end 62, the 3rd distribution end 63, the 4th distribution end 64 and the 5th distribution end 65 by the outer, coaxial line and is electrically connected by outer, coaxial line and strip line 251,242,222,246,252 respectively.
Described insulating part 111 structure that is rectangle also can be other geometry.The right and left design of insulating part 111 has a plurality of outstanding anchor clamps 112 with bayonet, and anchor clamps 112 block each phase shifter 81,82 respectively, the removable transmission line 412 of each of 83,84 (referring to Fig. 5).
Described dielectric rod 110 penetrates and is connected to insulating part 111 by default on metallic cavity 108 sides handle hole 109, and dielectric rod 110 is preferably integrated so that operate reliably with insulating part 111.As shown in Figure 7, when dielectric rod 110 move left and right, drive insulating part 111 and move, so just drive the same moved further of removable transmission line 412 (referring to Fig. 5, down together) of each phase shifter 81,82,83,84.Suppose that dielectric rod 110 moves from left to right, the removable transmission line 412 that drives phase shifter 81 increases a length, correspondingly can produce a differential phase-Δ.Similarly, the removable transmission line that also drives phase shifter 83 increases a same length, correspondingly also produces a same differential phase-Δ.Simultaneously, the removable transmission line that drives phase shifter 82 and 84 shortens a same length respectively, and correspondingly phase shifter 82 and 84 removable transmission line also produce an opposite differential phase+Δ respectively.
So the transmission signals of the synthetic end of power 60 to first distribution end 61 produces the differential phase of-2 Δs through phase shifter 81 and 83.
The transmission signals of the synthetic end of power 60 to second distribution end 62 is through phase shifter 81, the differential phase of generation-Δ.
The transmission signals of the synthetic end of power 60 to the 3rd distribution end 63 does not pass through phase shifter, and the differential phase of generation is 0.
The transmission signals of the synthetic end of power 60 to the 4th distribution end 64 is through phase shifter 82, the differential phase of generation+Δ.
The transmission signals of the synthetic end of power 60 to the 5th distribution end 65 produces the differential phase of+2 Δs through phase shifter 82 and 84.
So, the differential phase of 5 power division ends 61,62,63,64,65 be followed successively by-2 Δs ,-Δ, 0 ,+Δ ,+2 Δs, when 5 power division ends are connected to the antenna for base station of 5 or 10 (wherein every adjacent 2 unit insert as a submatrix is in parallel) antenna radiation units compositions respectively, move media bar 110, antenna pattern beam position promptly produce continuous sweep (or downwards bevel beam).
The power splitter group 71,72,73,74 of 4 simple power splitter compositions also can make to obtain the output signal that power levels are constant amplitude or non-constant amplitude in 5 distribution end 61,62,63,64,65 according to the concrete power-division ratios of Demand Design among Fig. 7.
Second embodiment:
See also Figure 10, the improvements of relative first embodiment of second embodiment are: the synthetic end strip line of main power splitter 72 221 directly is electrically connected by the coaxial cord realization with the synthetic end 601 of power, preposition power splitter is thrown aside, correspondingly, only surplus 4 of power division ports are respectively 61,62,64,65.So, description according to above-mentioned first embodiment, the differential phase that can obtain 601 to 4 power division ends 61,62,64,65 of the synthetic end of power similarly be followed successively by-2 Δs ,-Δ ,+Δ ,+2 Δs, the preposition power splitter of default another 71 is (not shown outside the bond cavity 108, can consult Fig. 7) the 0 differential phase output of power division end, can obtain equally 5 differential phases be followed successively by-2 Δs ,-Δ, 0 ,+Δ ,+the phase shift output of 2 Δs.So, the original preposition power splitter 71 (referring to Fig. 7) in metallic cavity 108 inside among first embodiment, owing to being asymmetric and not waiting the merit separation structure, it not only is subject to volume but also be subject to essential stripline design scheme, and original preposition power splitter 71 (referring to Fig. 7) can be shifted to after being preset in outside the metallic cavity 108 in a second embodiment, then can adopt unrestricted multiple scheme to give flexible design.
Originally execute example and can be applicable to the antenna for base station that 5 or 10 (wherein every adjacent 2 unit insert as a submatrix is in parallel) antenna radiation units are formed.
Please consult Figure 11 again, it is the third embodiment of the present invention, and present embodiment is the remodeling of second embodiment and first embodiment, and it produces 4 differential phase outputs.It is with the different of second embodiment: among the 3rd embodiment of Figure 11, phase shifter 82 is removed, and the strip line 225 synthetic end strip lines 244 direct and from power splitter 74 of the right side output of main power splitter 72 interconnect.So, because the effect of 3 phase shifters 81,83,84 among Figure 11, from the differential phase output of 60 to 4 power division ends 66,67,68,69 of the synthetic end of power will be followed successively by-2 Δs ,-Δ, 0 ,+Δ.Obviously, 4 tunnel phase places are exported the relation of difference such as still satisfying.
The beam-forming network of the described continuously variable differential phase of the 3rd embodiment can be applicable to the antenna for base station that 4 or 8 (wherein every adjacent 2 unit insert as a submatrix is in parallel) antenna radiation units are formed.
By that analogy, the present invention also can expand according to equal principle.
The beam-forming network of the continuously variable differential phase that the foregoing description constitutes, realized the integrated of power splitter and phase shifter structure, and the differential phase that forms the multichannel continuous variable is exported, have the advantages that passive intermodulation is low, power capacity is high, simultaneously simple and reliable for structure, dimension volume is little, manufacturing is simple, with low cost, can directly apply to the continuously adjustable wave beam electrical down-tilting antenna for base station on each working frequency range, in cell mobile communication systems, be with a wide range of applications.
Claims (10)
1, a kind of beam-forming network of continuously variable differential phase, the power splitter group (71 that is divided into two that comprises metallic cavity (108) and be positioned at metallic cavity (108), 72,73,74) and some phase shifters (81,82,83,84), power splitter group (71,72,73,74) include a main power splitter (72) and some from power splitter (73,74), each output of described main power splitter (72) all electrically connects a phase shifter (81,82) input, the output of part phase shifter (81,82) and is from power splitter (73,74) synthetic end electrically connects, each all electrically connects with the input of a phase shifter (83,84) from an output of power splitter (73,74), the synthetic end of another output and described main power splitter (72) all is electrically connected to outside the metallic cavity (108), it is characterized in that: described each phase shifter (81,82,83,84) the both forward and reverse directions difference according to phase shift is laid in the interior both sides of metallic cavity (108) respectively, both sides phase shifter (81,82,83,84) be provided with between and each phase shifter (81,82,83,84) insulating part of Lian Jieing (111), be provided with dielectric rod (110) on the insulating part (111), described metallic cavity (108) is provided with the handle hole (109) for this dielectric rod of operation (110).
2, the beam-forming network of continuously variable differential phase according to claim 1, it is characterized in that: described power splitter group (71,72,73,74) also comprise a preposition power splitter (71), the synthetic end of an one output and described main power splitter (72) is electrically connected, and its another one output and synthetic end then are electrically connected to outside the metallic cavity (108).
3, the beam-forming network of continuously variable differential phase according to claim 1 and 2, it is characterized in that: the both sides of described insulator (111) are provided with some outstanding anchor clamps with bayonet (112), described anchor clamps (112) block described each phase shifter (81 respectively, 82,83,84) to realize insulator (111) and each phase shifter (81,82,83,84) connection between.
4, the beam-forming network of continuously variable differential phase according to claim 3 is characterized in that: described dielectric rod (110) stretches out handle hole (109) with insulator (111) physical connection and from a side of insulator (111).
5, the beam-forming network of continuously variable differential phase according to claim 1 and 2, it is characterized in that: described phase shifter (81,82,83,84) comprise removable transmission line (412) and a pair of fixed transmission lines of using as input and output side respectively (411,413), described removable transmission line (412) integral body is " U " type, each fixed transmission lines (411,413) end is provided with the slotted eye of lengthwise, two arms of described removable transmission line (412) place each fixed transmission lines (411 respectively, 413) in the slotted eye, described removable transmission line (412) two arms are placing each fixed transmission lines (411, the cross section of the part in the slotted eye 413) is all rectangular, and the cross section at each fixed transmission lines (411,413) slotted eye place is has and only have a limit removed rectangular box-like.
6, the phase shifter of phase place continuous variable according to claim 5 is characterized in that: described removable transmission line (412) does not contact to keep with the capacitive coupling transmission signals with described fixed transmission lines (411,413).
7, the phase shifter of phase place continuous variable according to claim 6 is characterized in that: the surface-coated of described removable transmission line (412) has high temperature resistant and anti-high-power overcoat.
8, the phase shifter of phase place continuous variable according to claim 7 is characterized in that: described overcoat is a polytetrafluoroethylene.
9, the phase shifter of phase place continuous variable according to claim 8 is characterized in that: two internal faces of the metallic cavity (108) parallel with " U " profile of described phase shifter are provided with lug boss (421) in non-projection place of " U " type parts.
10, the phase shifter of phase place continuous variable according to claim 9, it is characterized in that: at two internal faces of the pairing metallic cavity of " U " of phase shifter profile (108), two inner wall surface position (422) projectioies of the two pairing metallic cavity of the described relatively fixed transmission lines in inner wall surface position (423) (411,413) (108) of the pairing metallic cavity of described removable transmission line (412) (108).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100331654A CN100435414C (en) | 2006-01-23 | 2006-01-23 | Beam forming network with continuously variable differential phase |
| PCT/CN2006/000812 WO2007082419A1 (en) | 2006-01-23 | 2006-04-26 | Differential phase continuously variable beam forming network |
| BRPI0608587-3A BRPI0608587A2 (en) | 2006-01-23 | 2006-04-26 | continuously variable differential beam forming network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100331654A CN100435414C (en) | 2006-01-23 | 2006-01-23 | Beam forming network with continuously variable differential phase |
Publications (2)
| Publication Number | Publication Date |
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| CN1805214A true CN1805214A (en) | 2006-07-19 |
| CN100435414C CN100435414C (en) | 2008-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100331654A Active CN100435414C (en) | 2006-01-23 | 2006-01-23 | Beam forming network with continuously variable differential phase |
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| Country | Link |
|---|---|
| CN (1) | CN100435414C (en) |
| BR (1) | BRPI0608587A2 (en) |
| WO (1) | WO2007082419A1 (en) |
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| CN102354775A (en) * | 2011-08-22 | 2012-02-15 | 广东通宇通讯股份有限公司 | Phase shifting device |
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| WO1995010862A1 (en) * | 1993-10-14 | 1995-04-20 | Deltec New Zealand Limited | A variable differential phase shifter |
| GB2288913B (en) * | 1994-04-18 | 1999-02-24 | Int Maritime Satellite Organiz | Satellite payload apparatus with beamformer |
| US5485743A (en) * | 1994-09-23 | 1996-01-23 | Schlumberger Technology Corporation | Microwave device and method for measuring multiphase flows |
| JP3119176B2 (en) * | 1996-10-23 | 2000-12-18 | 株式会社村田製作所 | Antenna shared distributor and transmitter / receiver for dielectric line |
| CN2872609Y (en) * | 2006-01-23 | 2007-02-21 | 京信通信技术(广州)有限公司 | Continous phase-different variable wave beam forming network |
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2006
- 2006-01-23 CN CNB2006100331654A patent/CN100435414C/en active Active
- 2006-04-26 WO PCT/CN2006/000812 patent/WO2007082419A1/en active Application Filing
- 2006-04-26 BR BRPI0608587-3A patent/BRPI0608587A2/en active IP Right Grant
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2007082419A1 (en) | 2007-07-26 |
| CN100435414C (en) | 2008-11-19 |
| BRPI0608587A2 (en) | 2010-01-26 |
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