CN112864623B - Multi-frequency antenna and frequency-selecting phase modulation device thereof - Google Patents
Multi-frequency antenna and frequency-selecting phase modulation device thereof Download PDFInfo
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- CN112864623B CN112864623B CN202011639872.4A CN202011639872A CN112864623B CN 112864623 B CN112864623 B CN 112864623B CN 202011639872 A CN202011639872 A CN 202011639872A CN 112864623 B CN112864623 B CN 112864623B
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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
- H01Q3/32—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 by mechanical means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a frequency-selecting phase modulation device, which controls an output gear to slide along an axial direction by designing a first control part so as to be meshed with a corresponding linkage gear of any frequency-selecting phase modulation unit to switch different states of the frequency-selecting phase modulation unit, for example, the frequency-selecting phase modulation device is controlled by combining a second control part to select a target phase modulation control piece in a second state and perform phase modulation in the second state by switching between the first state of simultaneously meshing a first linkage gear and a second linkage gear and the second state of singly meshing the first linkage gear, so that the aim of controlling the phase modulation control pieces by controlling the two control parts is fulfilled. The invention also provides a multi-frequency antenna adopting the frequency-selecting phase modulation device.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a multi-frequency antenna and a frequency-selecting phase-modulating device thereof.
Background
With the increasing number of mobile communication terminal users, the demand for network capacity of stations in a mobile cellular network is increasing, and it is required to minimize interference between different stations, even between different sectors of the same station, that is, to maximize network capacity and minimize interference. This is usually achieved by adjusting the downtilt angle of the antenna beam at the station.
In two ways of adjusting the beam downtilt angle, namely, mechanical downtilt and electronic downtilt, the electronic downtilt has obvious advantages and is the current mainstream and future development trend. The control of the electrical downtilt angle mainly includes two major categories, namely an internal control and an external control, wherein the internal control is the mainstream at present and in the future.
However, the motors used to drive the phase shifters in the conventional transmission device still correspond to the transmission mechanisms of the phase shifters one-to-one, the number of the motors is not reduced, and the number of the driving circuits in the control module is not reduced as the number of the motors. If the frequency bands of the antenna are increased, the structure of the transmission system is more complex and heavy, which affects the reliability of the multi-frequency antenna.
The applicant has practiced the related art solutions to the above problems, but there is still a room for improvement in the aspects of stable control and simple operation, and especially in the case of one control, the room for improvement of the related structure is still large.
Disclosure of Invention
The first purpose of the invention is to provide a frequency-selecting phase modulation device which is stable in control and simple in operation.
Another object of the present invention is to provide a multi-frequency antenna.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention provides a frequency-selecting phase modulation device, which comprises a switching control mechanism and at least two frequency-selecting phase modulation units, wherein each frequency-selecting phase modulation unit comprises a phase-shifting transmission mechanism and a plurality of phase modulation control elements,
the phase-shifting transmission mechanism of each frequency-selecting phase-shifting unit is provided with a first state that a first linkage gear and a second linkage gear which are arranged at the same end of the phase-shifting transmission mechanism synchronously rotate to drive an external gear to control the phase shifting of one phase-shifting control element and a second state that the first linkage gear independently rotates to control the external gear to be selectively meshed in a plurality of phase-shifting control elements;
the switching control mechanism is used for controlling the output gear to switch between the two frequency-selecting phase-modulating units and controlling the first linkage gear and the second linkage gear of any one frequency-selecting phase-modulating unit to realize state switching.
Further, the switching control mechanism comprises the output gear, a straight-moving mechanism and an epicyclic mechanism, the straight-moving mechanism is provided with a first control part for controlling the output gear to slide along the axial direction so as to be meshed with the corresponding interlocking gear of any frequency-selecting phase-modulating unit to switch different states of the output gear, and the epicyclic mechanism is provided with a second control part for controlling the output gear to rotate in the circumferential direction so as to drive the corresponding interlocking gear in different states to rotate.
Furthermore, the straight-moving mechanism comprises a first control part capable of rotating circumferentially, a driven screw, a driving nut, a box body provided with the output gear, and a sliding rod supporting the box body to slide, wherein a bevel gear is arranged at the tail end of the first control part and is meshed with the bevel gear formed on the driving nut, the driving nut is screwed with the driven screw, and the driven screw is fixedly arranged with the box body so as to be linked with the output gear to slide on the sliding rod along with the box body when the driving nut is driven by the rotation of the relatively fixed driving nut.
Furthermore, the sliding range of the box body on the sliding rod is a distance which enables an output gear in the box body to be suitable for running between the two frequency-selecting phase-shifting units, the output gear is meshed with two linkage gears of a first frequency-selecting phase-shifting unit at one end of the sliding range, and the output gear is meshed with two linkage gears of a second frequency-selecting phase-shifting unit at the other end of the sliding range.
Furthermore, but turnover mechanism includes circumferential direction second control part and transmission shaft, the end of second control part is equipped with the bevel gear, with the bevel gear of transmission shaft one end meshes mutually and is connected, the transmission shaft has the cross-section and is polygonal transmission portion, and this transmission portion end passes cross-sectional shape matched with shaft hole on the output gear, with the coaxial setting of driven screw rod of rectilinear mechanism to transmit moment through the circumferential direction of second control part for the output gear makes circumferential direction.
Furthermore, the driven screw rod is provided with a containing cavity at one end opposite to the transmission shaft so as to allow the transmission part of the transmission shaft to be contained when the output gear slides.
Furthermore, the phase-shifting transmission mechanism comprises a bracket, a screw and nut transmission mechanism and a guide mechanism;
the screw and nut transmission mechanism comprises a first transmission gear, a guide slide bar, a transmission screw and a transmission nut, wherein the transmission screw and the transmission nut are mutually screwed;
the guide mechanism comprises a plurality of guide rods, shaft sleeves and second linkage gears, each guide rod is circumferentially distributed, two ends of each guide rod are respectively connected with the shaft sleeves, and the second linkage gears are sleeved on one of the shaft sleeves;
the guide mechanism is sleeved on the transmission screw rod through a shaft sleeve, so that the second linkage gear and the first linkage gear are arranged side by side, and each guide rod of the guide mechanism correspondingly penetrates through the plurality of through holes in the transmission nut;
and an external gear is formed on the periphery of the transmission nut and is used for being meshed with any one phase modulation control piece.
Furthermore, the first connecting gear receives an external rotating torque to drive the transmission screw to rotate circumferentially, and correspondingly drives the transmission nut to perform linear motion along the guide rod and the sliding rod.
Furthermore, the first linkage gear and the second linkage gear receive the same rotating torque to synchronously rotate, and correspondingly drive the outer gear on the transmission nut to rotate in the circumferential direction.
Further, the first interlocking gear and the second interlocking gear have the same radial dimension and meshing tooth configuration.
Furthermore, in each frequency-selecting phase modulation unit, the phase modulation control elements are divided into two rows which are parallel and staggered side by side at two sides of the axial direction of the transmission screw.
Furthermore, the phase modulation control part is a rack and is used for forming a gear and rack transmission mechanism with the external gear.
Furthermore, the section of a guide rod of the guide mechanism is trapezoidal.
Furthermore, a stop block is arranged on one surface of the transmission nut, which faces the first transmission gear, and is used for being matched with a limit port arranged at the thread starting position of the transmission screw to limit the screw nut transmission mechanism in the linear stroke direction.
Furthermore, the first linkage gear and the second linkage gear are used for being meshed with an output gear of the switching control mechanism.
The invention also provides a multi-frequency antenna, which comprises a plurality of phase-shifting parts corresponding to a plurality of frequency bands, wherein the phase-shifting parts comprise the frequency-selecting phase-modulating device, and each phase-shifting part is provided with a corresponding phase-modulating control part in the frequency-selecting phase-modulating device and is in linkage arrangement with the phase-shifting control part.
The technical scheme provided by the invention has the beneficial effects that:
the frequency-selecting phase modulation device provided by the invention has the advantages that the first control part is designed to control the output gear to slide along the axial direction so as to be meshed with the corresponding linkage gear of any one frequency-selecting phase modulation unit to switch different states, for example, the switching between a first state of simultaneously meshing the first linkage gear and the second linkage gear and a second state of separately meshing the first linkage gear is realized. And controlling the frequency-selecting phase-modulating device to select a target phase-modulating control element in a second state by combining with a second control part, and performing phase modulation in the second state. Therefore, the phase shift of a plurality of phase modulation control elements can be controlled by controlling two control parts.
The phase modulation control device is relatively simple in structure, the control over the phase modulation control elements can be realized only by two-way transmission, the combination of parts related to the two-way transmission is ingenious and reasonable, the structure is stable, and the improvement cost is effectively controlled while the stable operation of the control process is ensured.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below.
FIG. 1 is a schematic structural diagram of a frequency-selective phase modulation apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the internal structure of the frequency-selective phase modulation apparatus of the present invention;
FIG. 3 is an enlarged fragmentary view of the central portion of FIG. 2, primarily illustrating the gearing arrangement thereof;
FIG. 4 is a schematic view of the structure of a drive screw of the frequency-selective phase modulation apparatus of the present invention;
FIG. 5 is a schematic view of a first linkage gear of the frequency-selective phase modulation apparatus of the present invention;
FIG. 6 is a schematic structural view of a transmission nut of the frequency-selecting phase-modulating device of the present invention;
FIG. 7 is a schematic view of the connection structure of the guide rod and a single shaft sleeve of the frequency-selecting phase-adjusting device of the present invention;
FIG. 8 is a schematic view of the first linkage gear of the frequency-selective phase modulation apparatus of the present invention;
FIG. 9 is a schematic view of an assembly structure of the phase shift transmission mechanism of the frequency-selective phase modulation apparatus of the present invention;
FIG. 10 is a schematic diagram of a phase modulation control element of the frequency-selective phase modulation apparatus according to the present invention;
FIG. 11 is a schematic view of an active nut of the switching control mechanism of the present invention;
FIG. 12 is a schematic view of an assembly structure of a passive screw and a second box of the switching control mechanism of the present invention;
FIG. 13 is a schematic view of a transmission shaft of the switching control mechanism of the present invention;
FIG. 14 is a schematic view of an output gear of the switching control mechanism of the present invention;
FIG. 15 is a schematic diagram of a part of the internal structure of a frequency-selective phase modulation apparatus according to the present invention in a use state;
FIG. 16 is an enlarged partial view of the central portion of FIG. 15;
FIG. 17 is a schematic diagram of a phase modulation control element fixing structure of an embodiment of the frequency-selective phase modulation apparatus of the present invention;
fig. 18 is a view showing a structure of a fixing member for fixing a phasing control member of the frequency-selective phasing apparatus of the invention;
FIG. 19 is a schematic structural view of a first box body for assembling a transmission nut of the frequency-selecting phase-modulating device of the present invention;
fig. 20 is a schematic diagram of the internal structure of another use state of the frequency-selective phase modulation apparatus according to the present invention.
Detailed Description
Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided for a more thorough and complete understanding of the present invention. It should be understood that the drawings and the embodiments of the present invention are illustrative only and are not intended to limit the scope of the present invention.
The term "include" and variations thereof as used herein are open-ended, i.e., "including but not limited to". The term "coupled" may refer to direct coupling or indirect coupling via intermediate members (elements). The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Relevant definitions for other terms will be given in the following description.
It should be noted that the terms "first", "second", and the like in the present invention are only used for distinguishing the devices, modules or units, and are not used for limiting the devices, modules or units to be different devices, modules or units, and are not used for limiting the sequence or interdependence relationship of the functions executed by the devices, modules or units.
The invention provides a frequency-selecting phase modulation device, which comprises a switching control mechanism A and at least two frequency-selecting phase modulation units B as shown in figures 1 and 2, wherein each frequency-selecting phase modulation unit B comprises a phase-shifting transmission mechanism 1 and a plurality of phase modulation control pieces 2.
The phase-shifting transmission mechanism 1 comprises a bracket 10, a screw nut transmission mechanism 11 and a guide mechanism 12;
referring to fig. 3, the screw and nut transmission mechanism 11 includes a first linkage gear 111, a guide sliding rod 112, and a transmission screw 113 and a transmission nut 114 screwed to each other, the first linkage gear 111 is fixedly sleeved on one end of the transmission screw 113, the transmission screw 113 and the guide sliding rod 112 are supported on the bracket 10 in parallel, and the transmission nut 114 is installed in a first box 115 pivoted to the guide sliding rod 112.
As shown in FIG. 4, the drive screw 113 includes a fixed head 1130, a threaded portion 1132 for the travel of the drive nut 114 thereon, and a smooth portion 1131 between the fixed head 1130 and the threaded portion 1132.
Referring to fig. 5, the first linkage gear 111 includes a mounting hole 1110 matching the shape of the fixing head 1130 of the drive screw 113, so that the two can rotate in the same direction after being mounted and fixed. In this embodiment, the mounting through-hole 1110 is a hexagonal through-hole.
As shown in fig. 6, the driving nut 114 includes a nut hole 1140 formed at the center, an external gear 1141 formed at the outer circumference thereof, and a passing hole 1142 provided between the nut hole 1140 and the external gear 1141.
The driving nut 114 sleeves the driving screw 113 in the nut hole 1140, and the nut hole 1140 and the thread portion 1132 of the driving screw 113 form a screw-nut driving mechanism. When the external rotation torque drives the first linkage gear 111, the transmission screw 113 rotates synchronously with the same direction, so that the driving transmission nut 114 and the first box 115 installed therein are driven to linearly move back and forth along the transmission screw 113 and the guide sliding rod 112 under the condition that the first box 115 is limited by the guide sliding rod 112.
Drive nut 114 is equipped with backstop 1143 to the one side of first drive gear 111 for cooperate with the spacing mouth (not shown) that sets up in drive screw 113's screw thread initial position department and realize the limit of screw nut drive mechanism in the ascending one end of straight line stroke direction, it is spacing that the other end college at straight line stroke also can various forms, it is needless to give unnecessary to describe.
As shown in fig. 7 and 8, the guide mechanism 12 includes a plurality of guide rods 121, bushings 122, and a second interlocking gear 123, wherein the bushings 122 are respectively disposed at two ends of the guide rods 121, so as to fix the guide rods 121 between the two bushings 122. The end of the shaft sleeve 122 at the same end as the fixed head 1130 of the driving screw 112 is provided with a connecting end 1221 fixedly connected with the second interlocking gear 123, and the shape of the connecting end is matched with the shape of the sleeve hole 1230 of the second interlocking gear 123, so as to fix the second interlocking gear 123 on the shaft sleeve 122. When the second interlocking gear 123 is rotated, the sleeve 122 and the guide rod 121 are also rotated along with the second interlocking gear 123. The shaft sleeve 122 connected to the second linkage gear 123 is further provided with a through hole 1222, which is sleeved on one end of the transmission screw 112 where the first linkage gear 111 is disposed, and makes the first linkage gear 111 outside and the second linkage gear 123 inside. The outer side of the other shaft sleeve 122 forms a pivot shaft pivoted on the bracket, and the inner side forms a hole slot (not shown) for the same end of the transmission screw 113 to pivot therein, so that the transmission screw 113 and/or the guide mechanism can rotate under the driving of the two interlocking gears 111, 123 respectively or together when necessary.
In this embodiment, the number of the guide rods 121 is three, and each guide rod 121 is circumferentially distributed and locked between two bushings 122. The cross-sectional shape of the guide rods 121 matches the shape of the through holes 1142 in the transmission nut 114, the number of the guide rods 121 matches the number of the through holes 1142, and each guide rod 121 is sleeved in each through hole 1142 of the transmission nut 114, so that the transmission nut 114 can move in the same direction along with the rotation of the shaft sleeve 122.
Preferably, the guide rod 121 has a trapezoidal cross section. Of course, other cross-sectional shapes can be provided, and theoretically, the guide rod 121 can be coupled with the driving nut 114 only by being disposed through the driving nut.
The specific assembly structure of the phase shifting transmission 1 is shown in fig. 9, and the fixing head 1130 of the drive screw 113 is exposed out of the connecting end 1221 of the side sleeve 122 of the guide mechanism 12. The smooth portion 1131 of the drive screw 113 is located in the through bore 1222 of the bushing. The first interlocking gear 111 is fixedly mounted on the fixing head 1130 outside the exposed connecting end 1221, and the second interlocking gear 123 is fixedly mounted on the connecting end 1221 of the shaft sleeve 122, so that the second interlocking gear 123 is arranged side by side with the first interlocking gear 111, in this embodiment, the first interlocking gear 111 and the second interlocking gear 123 have the same radial dimension and meshing tooth specification configuration, and two identical gears can be used. In addition, the three guide rods 121 correspondingly pass through the through holes 1142 of the driving nut 114, so that they are circumferentially distributed on the periphery of the driving screw 113. On the basis of this structure, there are several cases that different motion control effects are generated on the transmission nut 114 by controlling different interlocking gears as follows:
when the first linkage gear 111 is rotated alone, and when the first box 115 enclosing the transmission nut 114 is limited by the guide slide rod 112, the transmission nut 114 moves axially along the guide rod 121 and the transmission screw 113 under the transmission action of the screw nut transmission mechanism, which can be used to realize the linear movement of the transmission nut 114, so as to position the transmission nut to the phase modulation control members corresponding to different frequency bands;
if the second interlocking gear 123 is rotated alone, the driving nut 114 rotates along with the guide rod 121 in the circumferential direction, but since the first interlocking gear 111 is not rotated and thus the driving screw 113 is not moved, the driving nut 114 theoretically moves along the guide rod 121 and the driving screw 113 in the circumferential direction and the axial direction simultaneously, which is not practical in the present invention and thus does not affect the implementation of the present invention.
When the first linkage gear 111 and the second linkage gear 123 are simultaneously rotated in the same direction, since the first linkage gear 111 and the second linkage gear 123 have the same radial dimension, the relative movement directions of the transmission screw 113 and the transmission nut 114 are the same direction and the same speed, and the transmission nut 114 is enclosed in the first box 115 but can freely rotate therein, in this state, the transmission nut 114 stays at the same axial position and moves circumferentially along with the guide rod 121. The rotational torque output by the drive nut 114 rotation in place can act on the selected phasing control element to effect phasing control.
In the frequency-selective phase modulation unit B of the present invention, the phase modulation control elements 2 are divided into two opposite rows, and are parallel and staggered to the two axial sides of the driving screw 113, referring to fig. 1, by this arrangement, each phase modulation control element 2 monopolizes one width of the axial movement stroke of the driving nut 114, that is, monopolizes one axial position, so that when the driving nut 114 moves axially along the driving screw 113 by rotating the first transmission gear 111, the driving nut 114 can be aligned with only one phase modulation control element 2 at each corresponding axial position.
Each phase modulation control element 2 corresponds to a frequency band signal of the antenna and is used for connecting a phase shifting part of the corresponding frequency band signal. The radiation unit column for radiating the frequency band signal is fed into each corresponding radiation unit of the radiation unit column after the phase shift of the signal is carried out by one or more phase shifters, and the phase shift of each phase shifter is realized by the movement of the phase shift component.
As shown in fig. 10, the phasing control member 2 is in a rack shape, and a rack 20 in parallel engaged with the external gear 1141 is provided on the side opposite to the external gear 1141 of the power transmission nut 114, and constitutes a rack and pinion mechanism together with the external gear 1141. Therefore, after the first linkage gear 111 is rotated to move the transmission nut 114 to the axial position corresponding to the corresponding phase modulation control element 2, the external gear 1141 is meshed with the phase modulation control element 2 corresponding to the position, and then the first linkage gear 111 and the second linkage gear 123 are simultaneously rotated in the same direction, the transmission nut 114 rotates circumferentially at the position where the transmission nut stops, and the external gear 1141 is meshed with the side-by-side racks 20 to drive the phase modulation control element 2 to move, so that linear torque is output to the phase shift part to drive the phase shift part to shift to realize phase shift.
In this embodiment, a state that the first linkage gear 111 and the second linkage gear 123 of the phase shift transmission mechanism 21 synchronously rotate to drive the external gear 1141 to control the phase shift of one phase shift control member 22 is defined as a first state; the first linkage gear 111 is independently rotated to control the position of the transmission nut 114, so that the state that the outer gear 1141 is meshed in one of the phase modulation control elements 2 is defined as a second state;
in this embodiment, the frequency-selective phase modulation apparatus has two frequency-selective phase modulation units B1 and B2, the two frequency-selective phase modulation units B1 and B2 are arranged side by side and symmetrically along the same direction, and the first linkage gear 111 and the second linkage gear 123 are arranged at opposite ends of each other, referring to fig. 2.
The switching control mechanism A is used for controlling the output gear 3 to switch between the two frequency-selecting phase-modulating units B, and is used for controlling the first linkage gear 111 and the second linkage gear 123 of any one frequency-selecting phase-modulating unit B to realize state switching.
Referring to fig. 3, the switching control mechanism a includes the output gear 3, a rectilinear motion mechanism 4 and an epicyclic mechanism 5, the rectilinear motion mechanism 4 is provided with a first control portion 41 for controlling the output gear 3 to slide along the axial direction to engage with a corresponding interlocking gear of any frequency-selecting phase modulation unit to switch different states thereof, and the epicyclic mechanism 5 is provided with a second control portion 51 for controlling the output gear 3 to rotate circumferentially to drive the corresponding interlocking gears 111 and 123 in the different states to rotate.
Specifically, in the present embodiment, the straight-moving mechanism 4 includes the first control portion 41 capable of rotating circumferentially, a passive screw 42, a driving nut 44, a second box 43 for mounting the output gear 3, and a sliding rod 45 for supporting the second box 43 to slide.
As shown in fig. 11, the driving nut 44 is formed with a bevel gear 441 at one end, and the internal thread structure thereof constitutes a nut screw transmission with the driven screw 42.
The first control part 41 has a bevel gear 411 at its end, which is engaged with a bevel gear 441 formed on the driving nut 44.
The driving nut 44 and the driven screw 42 are screwed together, and the driven screw 42 and the second box 43 are fixed together, so that when the driving nut 44 is rotated and driven, the output gear 3 in the second box 43 is driven to slide on the sliding rod 45 along with the second box 43.
As shown in fig. 12, an accommodating chamber 431 is provided at one end of the second box 43 fixedly connected to the passive screw 42, and a through hole 430 is provided at a connecting portion of the accommodating chamber 431 and the second box 43, through which the accommodating chamber 431 can enter.
Referring to fig. 3, the epicyclic mechanism 5 comprises the second control part 51 and a transmission shaft 52 which can rotate circumferentially, and the end of the second control part 51 is provided with a bevel gear 510 which is engaged with a bevel gear 520 at one end of the transmission shaft 52. As shown in fig. 13 and 14, the transmission shaft 52 has a transmission portion 521 with a polygonal cross section, and the end of the transmission portion 521 passes through the shaft hole 30 with a matched cross section shape on the output gear 3 and is coaxially arranged with the driven screw 42 of the straight-moving mechanism 4, so that the torque is transmitted to the output gear 3 through the transmission shaft 52 to rotate in the circumferential direction by the circumferential rotation of the second control portion 51. Meanwhile, as the second case 43 and the output gear 3 slide to receive the transmission portion 521, the accommodating chamber 431 of the second case 43 also gradually receives the transmission portion 521 at one side, and the transmission portion 521 then passes through the shaft hole 30 and partially enters the accommodating chamber 431, at which time the distance between the driven screw 42 and the transmission shaft 52 is shortened. In the above process, when the second control portion 51 is reversely controlled to rotate, the operation mechanism of the transmission shaft 52 and the driven screw 42 is naturally opposite, and details are omitted.
One end of the shaft hole 30 of the output gear 3 is further provided with a coaxial cylinder 31, when the output gear 3 and the second box 43 are assembled, the accommodating cavity 431 of the second box 43 is sleeved with the coaxial cylinder 31, and the transmission part 521 of the transmission shaft 52 penetrates through the shaft hole 30 of the output gear. When the second box 43 and the output gear 3 slide, the transmission portion 521 enters the space where the coaxial cylinder 31 and the accommodating chamber 431 are located. In other embodiments, other mechanisms may be provided to make the second case 43 and the output gear 3 escape from the transmission portion 521 in a suitable space during sliding, which is not necessarily the accommodating cavity 431 coaxially disposed therewith in this embodiment.
The sliding range of the second case 43 on the sliding rod 45 is a distance that makes the output gear 3 in the second case 43 suitable for running between the two frequency-selecting phase-shifting units B1 and B2. Referring to fig. 2 and 15, as at one end of the sliding range, the output gear 3 meshes with the two interlocking gears 111 and 123 of the first frequency-selecting phase-shifting unit B1, and at the other end of the sliding range, the output gear 3 meshes with the two interlocking gears 111 and 123 of the second frequency-selecting phase-shifting unit B2.
The basic design of the frequency-selective phase modulation apparatus is further illustrated by an operating embodiment of the frequency-selective phase modulation apparatus.
Setting a state of the frequency-selecting phase-shifting device as an initial state, if the output gear 3 and the second box body 43 are located at the initial positions of the sliding range, the transmission nuts 114 of the two frequency-selecting phase-shifting units B are both arranged at the initial positions of one end. Of course, these starting positions can be designed by the skilled person according to the design habit of the skilled person, and the design of each starting state is a reference point, which is not limited in the present invention.
With reference to fig. 2 and fig. 15, after determining that the target phase modulation control 2 is in the position of the frequency-selective phase modulation apparatus, the phase modulation control 21 at one end of the frequency-selective phase shift unit B2 in fig. 15 is the target phase modulation control for this operation.
The first control part 41 is driven, and the bevel gear 411 at the end of the first control part 41 is engaged with the bevel gear 441 at the end of the driving nut 44, so that when the first control part 41 rotates in a certain direction, the driven screw 42 is driven to push forward, thereby moving the second box 43 and the output gear 3 mounted therein from one end of the frequency-selecting phase-shifting unit B1 to the end of the frequency-selecting phase-shifting unit B2. When the output gear 3 reaches the first linkage gear 111 of the frequency-selecting phase-shift unit B2 and engages with only the first linkage gear 111, the rotation of the first control unit 41 is stopped.
After the output gear 3 is engaged with the first linkage gear 111, the second control part 51 is rotated, and the bevel gear 510 at the end of the second control part 51 is engaged with the bevel gear 520 at one end of the transmission shaft 52, so that when the second control part 51 rotates in a certain direction, the transmission shaft 52 is driven, and the transmission shaft 52 simultaneously drives the output gear 3 to move in the same direction. At this stage, the phase-shifting transmission mechanism 21 is in the second state, the first transmission gear 111 receives an external rotation torque alone to drive the transmission screw 113 to rotate circumferentially, and correspondingly drives the transmission nut 114 to perform linear motion along the guide rod 121 and the slide rod 112 until the transmission nut 114 moves to the position of the target phase-adjusting control member 21, and at this time, the second control portion 51 stops rotating, so that the transmission nut 114 stays at the position of the target phase-adjusting control member 21.
The phasing control corresponding to the position where the drive nut 114 is located is the selected phasing control. In the present embodiment, as shown in fig. 17 and 18, each of the phasing control members 2 is fixedly locked by an elastic buckle 40 in the fixing member 4, so that the phasing control member cannot rotate freely when not selected. As shown in fig. 19, a top member 116 is further disposed on the side of the first box 115 for installing the transmission nut 114, when the transmission nut 114 moves to the position of the target phasing control member 21, the top member 116 jacks up the fixing member 4 of the phasing control member 21, and the spring catch 40 of the fixing member 4 releases the target phasing control member 21, so that the target phasing control member 21 is in a movable state. Therefore, the phasing control member selected by the driving nut 114 is in a movable state, and the phasing control member which is not selected is stuck by the fixed part 4 and cannot be moved.
After the target phasing control member 21 is selected, the first control part 41 is rotated again, and the output gear 3 continues to move forward until the output gear 3 is simultaneously engaged with the first linkage gear 111 and the second linkage gear 123, as shown in fig. 20, at this time, the rotation of the first control part 41 is stopped.
Next, the second control portion 51 is rotated again, the output gear 3 is driven to drive the first linkage gear 111 and the second linkage gear 123 at the same time, at this stage, the phase shift transmission mechanism 21 is in the first state, the first linkage gear 111 and the second linkage gear 123 receive the same rotation torque to rotate synchronously, and the external gear 1141 on the transmission nut 114 is correspondingly driven to rotate circumferentially, that is, to rotate in situ at the position of the target phase modulation control member 21. Because the side-by-side racks 20 of the target phasing control member 21 are meshed with the external gear 1141 of the transmission nut 114, when the transmission nut 114 rotates in situ, the displacement of the movement of the target phasing control member 2 can be controlled, and the phase shift of a certain frequency band signal of the antenna controlled by the target phasing control member is correspondingly completed.
After the displacement of the target phase modulation control member 21 is completed, the second control part 51 stops rotating, and the phase shift operation corresponding to one target phase modulation control member 21 at this time is completed.
After finishing the phase modulation work, if needing to control other phase modulation control elements 2 to modulate phase, the switching control mechanism A controls the output gear to switch between a first state of simultaneously engaging the first linkage gear and the second linkage gear of the two frequency-selecting phase modulation units B and a second state of separately engaging the first linkage gear, so as to achieve the purpose of controlling the phase modulation control elements 2 to perform phase modulation after the transmission nut 114 is moved to the position of different target phase modulation control elements 2.
Therefore, the frequency-selective phase modulation device provided by the embodiment can provide the first control part 41 through designing the straight mechanism 4 to control the output gear 3 to slide along the axial direction so as to engage with the corresponding interlocking gear of any one frequency-selective phase modulation unit to switch different states. If the phase is switched between a first state of simultaneously engaging the first interlocking gear 111 and the second interlocking gear 123 and a second state of individually engaging the first interlocking gear 111, the second control part 51 is combined to control the frequency-selecting phase modulation device to select a target phase modulation control element in the second state, and phase modulation is performed in the first state. Therefore, the purpose that the phase shift of a plurality of phase shift control elements can be controlled by controlling two control parts by using the frequency-selecting phase modulation device is achieved.
In this embodiment, one frequency-selecting phase modulation unit B is provided with two rows of phase modulation control elements 2, and the upper and lower rows of phase modulation control elements 2 are arranged in a staggered manner, so that the transmission nut 114 is only aligned with one phase modulation control element at one position. With reference to one embodiment shown in fig. 1, a total of twenty phase modulation controls 2 are provided for two frequency-selective phase modulation units B. This is only one embodiment, and in other embodiments, the number of the phase modulation control elements 2 may be set according to specific requirements of a product, and the number of the phase modulation control elements may be expanded, so as to control the phase shift of more antenna frequency bands, and may also be reduced, so as to adapt to a corresponding product, which is not limited in the present invention.
In another embodiment, the switching control mechanism of the present invention may work in conjunction with a single frequency-selective phase modulation unit, or with three, four, or more such frequency-selective phase modulation units, and it is critical that the linear stroke of the output gear in the switching control mechanism is long enough to engage the linked gears of different sets of frequency-selective phase modulation units at different axial positions. Therefore, those skilled in the art can flexibly change different embodiments according to the spirit of the present invention, which is not repeated herein.
The invention also provides a multi-frequency antenna, which comprises a plurality of phase-shifting parts corresponding to a plurality of frequency bands, and the multi-frequency antenna comprises the frequency-selecting phase-modulating device, wherein each phase-shifting part is provided with a corresponding phase-modulating control part in the frequency-selecting phase-modulating device in linkage with the phase-modulating control part.
In conclusion, the phase modulation control method and the phase modulation control device optimize the relevant mechanism structure required by phase modulation, and can realize phase modulation control on any frequency band signal in the multi-frequency antenna more stably and more simply.
The foregoing description is only exemplary of the preferred embodiments of the invention and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention according to the present invention is not limited to the specific combination of the above-mentioned features, but also encompasses other embodiments in which any combination of the above-mentioned features or their equivalents is possible without departing from the scope of the invention as defined by the appended claims. For example, the above features and (but not limited to) features having similar functions of the present invention are mutually replaced to form the technical solution.
Claims (15)
1. The utility model provides a frequency-selecting phase modulation device, is including switching control mechanism and two at least frequency-selecting phase modulation units, and every frequency-selecting phase modulation unit is including phase-shifting drive mechanism and a plurality of phase modulation control piece, its characterized in that:
the phase-shifting transmission mechanism of each frequency-selecting phase-shifting unit is provided with a first state that a first linkage gear and a second linkage gear which are arranged at the same end of the phase-shifting transmission mechanism synchronously rotate to drive an external gear to control the phase shifting of one phase-shifting control element and a second state that the first linkage gear independently rotates to control the external gear to be selectively meshed in a plurality of phase-shifting control elements;
the switching control mechanism is used for controlling the output gear to switch between the two frequency-selecting phase-modulating units and controlling the first linkage gear and the second linkage gear of any one frequency-selecting phase-modulating unit to realize state switching;
the phase-shifting transmission mechanism comprises a bracket, a screw and nut transmission mechanism and a guide mechanism;
the screw nut transmission mechanism comprises a first linkage gear, a guide slide bar, a transmission screw and a transmission nut, wherein the transmission screw and the transmission nut are screwed mutually;
the guide mechanism comprises a plurality of guide rods, shaft sleeves and second linkage gears, each guide rod is circumferentially distributed, two ends of each guide rod are respectively connected with the shaft sleeves, and the second linkage gears are sleeved on one of the shaft sleeves;
the guide mechanism is sleeved on the transmission screw rod through a shaft sleeve, so that the second linkage gear and the first linkage gear are arranged side by side, and each guide rod of the guide mechanism correspondingly penetrates through the plurality of through holes in the transmission nut;
and an external gear is formed on the periphery of the transmission nut and is used for being meshed with any one phase modulation control piece.
2. The frequency-selective phase modulation apparatus according to claim 1, wherein: the switching control mechanism comprises the output gear, a straight mechanism and a turnover mechanism, the straight mechanism is provided with a first control part for controlling the output gear to slide along the axial direction so as to be meshed with the corresponding linkage gear of any one frequency-selecting phase-modulating unit to switch different states of the output gear, and the turnover mechanism is provided with a second control part for controlling the output gear to rotate in the circumferential direction so as to drive the corresponding linkage gear in different states to rotate.
3. The frequency-selective phase modulation apparatus according to claim 2, wherein: the straight-moving mechanism comprises a first control part, a driven screw rod, a driving nut, a box body and a sliding rod, wherein the first control part can rotate in the circumferential direction, the box body is provided with an output gear, the sliding rod supports the box body to slide, a bevel gear is arranged at the tail end of the first control part and is meshed and connected with the bevel gear formed on the driving nut, the driving nut is screwed with the driven screw rod, the driven screw rod is fixedly arranged with the box body so that when the box body is driven by the rotation of the driving nut which is fixed relatively, the output gear slides on the sliding rod along with the box body.
4. The frequency-selective phase modulation apparatus according to claim 3, wherein: the box body is in the distance that the gliding range of slide bar is suitable for making the output gear in the box body move between two frequency selection tone looks units, and, at the one end of gliding range, the output gear meshes with two interlock gears of first frequency selection tone looks unit wherein, at the other end of gliding range the output gear meshes with two interlock gears of second frequency selection tone looks unit wherein mutually.
5. The frequency-selective phase modulation apparatus according to claim 4, wherein: but turnover mechanism includes circumferential direction second control portion and transmission shaft, the end of second control portion is equipped with the bevel gear, with the bevel gear of transmission shaft one end meshes mutually and is connected, the transmission shaft has the cross-section and is polygonal transmission portion, and this transmission portion end passes cross-sectional shape matched with shaft hole on the output gear, with the coaxial setting of driven screw rod of craspedodrome mechanism to transmit moment for through the circumferential direction of second control portion through the transmission shaft output gear makes circumferential direction.
6. The frequency-selective phase modulation apparatus according to claim 5, wherein: and one end of the driven screw rod opposite to the transmission shaft is provided with an accommodating cavity so as to allow the transmission part of the transmission shaft to be accommodated when the output gear slides.
7. The frequency-selective phase modulation apparatus according to claim 1, wherein: the first linkage gear receives external rotating torque to drive the transmission screw rod to rotate circumferentially, and correspondingly drives the transmission nut to perform linear motion along the guide rod and the sliding rod.
8. The frequency-selective phase modulation apparatus according to claim 1, wherein: the first linkage gear and the second linkage gear receive the same rotating torque to synchronously rotate, and correspondingly drive the outer gear on the transmission nut to execute circumferential rotation.
9. The frequency-selective phase modulation apparatus according to claim 1, wherein: the first linkage gear and the second linkage gear have the same radial dimension and meshing tooth configuration.
10. The frequency selective phase modulation apparatus according to claim 1, wherein: in each frequency-selecting phase modulation unit, a plurality of phase modulation control elements are divided into two rows which are parallel and staggered side by side on two axial sides of the transmission screw.
11. The frequency-selective phase modulation apparatus according to claim 1, wherein: the phase modulation control part is a rack and is used for forming a gear and rack transmission mechanism with the outer gear.
12. The frequency-selective phase modulation apparatus according to claim 1, wherein: the section of a guide rod of the guide mechanism is trapezoidal.
13. The frequency selective phase modulation apparatus according to claim 1, wherein: and a stop block is arranged on one surface of the transmission nut opposite to the first connecting gear and used for being matched with a limit opening arranged at the thread starting position of the transmission screw to realize the limit of the screw nut transmission mechanism in the linear stroke direction.
14. The frequency-selective phase modulation apparatus according to claim 1, wherein: the first linkage gear and the second linkage gear are used for being meshed with an output gear of the switching control mechanism.
15. A multi-frequency antenna comprising a plurality of phase shift units corresponding to a plurality of frequency bands, comprising the frequency-selective phase modulation apparatus according to any one of claims 1 to 14, wherein each of the phase shift units has a phase modulation control member associated therewith.
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| CN112821075B (en) * | 2020-12-31 | 2022-07-26 | 京信通信技术(广州)有限公司 | Multi-frequency antenna and phase modulation switching control mechanism thereof |
| CN113540797B (en) * | 2021-07-14 | 2023-11-21 | 京信通信技术(广州)有限公司 | Phase-selecting control mechanism, frequency-selecting phase-modulating device and multi-frequency antenna |
| CN113922013B (en) * | 2021-09-30 | 2022-10-25 | 京信通信技术(广州)有限公司 | Phase-shifting frequency-selecting device and multi-frequency antenna |
| CN113915304A (en) * | 2021-11-09 | 2022-01-11 | 罗森伯格技术有限公司 | Transmission and phase-shifting assembly |
| CN114300850B (en) * | 2021-12-30 | 2024-05-28 | 京信通信技术(广州)有限公司 | Multi-frequency electrically-tunable antenna and phase shifting device |
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| CN111129715A (en) * | 2015-12-31 | 2020-05-08 | 华为技术有限公司 | Antenna comprising beam forming means |
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| CN2812316Y (en) * | 2005-06-02 | 2006-08-30 | 京信通信技术(广州)有限公司 | Adjuster for mobile communication antenna phase shifter |
| CN103082651B (en) * | 2011-11-08 | 2015-06-24 | 欣美实业股份有限公司 | Table enabling user to adjust board inclined angle |
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| JP2001284903A (en) * | 2000-04-03 | 2001-10-12 | Sumitomo Electric Ind Ltd | Phase shifter rotating mechanism |
| CN111129715A (en) * | 2015-12-31 | 2020-05-08 | 华为技术有限公司 | Antenna comprising beam forming means |
| CN109755747A (en) * | 2017-11-07 | 2019-05-14 | 罗森伯格技术（昆山）有限公司 | A kind of antenna phasing unit transmission device |
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