CN112751198A - Multi-frequency antenna and phase-shifting measuring device thereof - Google Patents
Multi-frequency antenna and phase-shifting measuring device thereof Download PDFInfo
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- CN112751198A CN112751198A CN202011639631.XA CN202011639631A CN112751198A CN 112751198 A CN112751198 A CN 112751198A CN 202011639631 A CN202011639631 A CN 202011639631A CN 112751198 A CN112751198 A CN 112751198A
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- 238000005259 measurement Methods 0.000 claims description 21
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/10—Radiation diagrams of antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
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Abstract
The phase shift measuring device provided by the invention is characterized in that at least two phase shift transmission mechanisms are arranged on the circumferential direction of the metering shaft, the phase shift transmission mechanisms perform axial motion through movable parts of the phase shift transmission mechanisms to control the phase shift of a corresponding single frequency band in the multi-frequency antenna in a linkage manner, after the movable parts move for a certain distance to complete the phase shift of signals of the single frequency band, when raised ribs of the movable parts are abutted against the movable parts by pulling the metering shaft, the data of the metering shaft are read, and the displacement of the movable parts corresponds to the corresponding phase shift, so that the phase shift of the single frequency band controlled by the corresponding phase shift transmission mechanisms is obtained. The phase-shifting measuring device provided by the invention is simple in structure and easy to operate. The invention also provides a multi-frequency antenna comprising the phase-shifting measuring device.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a multi-frequency antenna and a phase-shifting measuring device thereof.
Background
The development of mobile communication has entered the 5G era so far, and the requirement for communication quality is higher and higher, and the antenna is the front-end device of the communication system, and its performance is especially important for communication quality. The phase shifter is one of the core modules of the base station electrically-tunable antenna. In practical applications, the electrically tunable antenna needs to shift the phase of a transmission signal to adjust the tilt angle of a beam of the antenna. The phase shifting process is a high-precision control process, and the precise structure plays a key role in precise phase shifting. Similarly, it is also crucial to implement and maintain phase shift control to measure the phase shift accurately. Therefore, it is necessary to match the phase shift control component of the antenna with a phase shift measurement component of higher accuracy.
Each electrically tunable antenna generally includes a plurality of radiating element arrays for radiating a plurality of frequency band signals, each radiating element row generally matches with a plurality of corresponding phase shifters, and the phase shifters are generally connected to a common phase shifting unit, and the phase shifting unit is linearly moved by a phase shifting transmission mechanism, so that the phase shifters of the same radiating element row can be linked to perform synchronous phase shifting, and thus the signals fed to the corresponding radiating elements meet the desired phase requirements, and the tilt angle of the antenna beam corresponding to the radiating element row is adjusted as desired. In this case, if a common phase shift component corresponding to a frequency band signal needs to be provided with a set of phase shift transmission mechanisms, it can be understood that each pair of electrically tunable antennas needs to be provided with a plurality of sets of phase shift transmission mechanisms.
The existing phase-shifting measuring device has complex structure and high cost, is inconvenient to realize the selective phase shifting of the multi-band antenna, and how to realize the measuring device with more control by a reasonable structure belongs to the continuously evolving category of the technical personnel in the field.
Disclosure of Invention
One of the purposes of the invention is to provide a phase-shifting measuring device with simple structure and accurate measurement and control.
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:
a phase shift measuring device comprises a pair of support plates which are in parallel and opposite, and a measuring shaft and at least two phase shift transmission mechanisms which are arranged on the support plates, wherein the phase shift transmission mechanisms perform axial movement through movable parts of the phase shift transmission mechanisms to linkage control the phase shift of a corresponding single frequency band in a multi-frequency antenna, the measuring shaft sequentially comprises a selecting and measuring part, a sliding rod part and a measuring part, the surface of the measuring part is provided with a scale, the selecting and measuring part is provided with a rib which protrudes in the radial direction, the front end of the measuring part is provided with an indicating piece, and the indicating piece corresponds to the circumferential position of the indicating rib; the phase-shifting transmission mechanism is provided with a movable component with a motion axis parallel to the axis of the metering shaft, and each movable component is arranged around the circumference of the metering shaft and partially holds the metering shaft; the two bearing plates are respectively provided with a through hole for the through arrangement of the bearing metering shaft, the edge of the through hole of the bearing plate corresponding to the selecting and measuring part is provided with a plurality of bayonets in a surrounding way, and the bayonets allow the ribs to select to pass to one movable part corresponding to the direction to be abutted so as to realize the limiting.
Preferably, when the measuring shaft is in the reset state, the sliding rod portion of the measuring shaft is located between the two support plates, and the selecting and measuring portion and the measuring portion are located outside the two support plates respectively.
Furthermore, the measuring part is provided with a limiting piece, and the limiting piece is positioned on the measuring part and is abutted against the supporting plate adjacent to the measuring part in the reset state.
Preferably, the measuring part of the metering shaft passes through a through hole of the packaging plate parallel to the supporting plate, and an indication layer for providing readable information in cooperation with the indication of the indicator of the metering shaft is arranged around the through hole.
Preferably, the package plate is an exposed package side plate inherent to the antenna.
Preferably, the measuring shaft is arranged between the limiting part and the packaging plate, the measuring part is sleeved with a return spring, and when the measuring shaft is in a reset state, the return spring is in a free state without being pressed.
Furthermore, the phase shift transmission mechanism comprises the movable part, a screw rod and a slide rod, wherein both ends of the slide rod and the screw rod are respectively supported on the pair of support plates, one end of the screw rod forms a control part at the outer side of the support plates for driving the screw rod to rotate by external force, the movable part is provided with a shaft hole and a nut, the shaft hole is sleeved on the slide rod, and the nut is meshed with the screw rod to form the screw rod nut transmission mechanism.
Furthermore, one side of the movable component is provided with a groove for partially holding the metering shaft, and the holding ranges of the movable components and the metering shaft are mutually avoided.
Furthermore, limiting rings for limiting the axial movement stroke of the movable component are arranged on two sides of the screw rod.
The invention also provides a multi-frequency antenna, which is used for radiating signals of a plurality of frequency bands and a plurality of phase shifting parts arranged corresponding to the frequency bands, wherein each phase shifting part is used for receiving external torque and executing the phase shifting of the signal of the corresponding frequency band.
The technical scheme provided by the invention has the beneficial effects that:
the invention provides a phase-shifting measuring device, which is characterized in that at least two phase-shifting transmission mechanisms are arranged on the circumferential direction of a metering shaft, the phase-shifting transmission mechanisms perform axial motion through movable parts of the phase-shifting transmission mechanisms to control the phase shifting of a corresponding single frequency band in a multi-frequency antenna in a linkage manner, a metering shaft is arranged among a plurality of phase-shifting transmission mechanisms and used for selectively measuring the moving range of one of the phase-shifting transmission mechanisms, when raised ribs of the metering shaft are abutted against the movable parts by pulling the metering shaft, scale data of the metering shaft is read, the moving range is correspondingly known, and the phase shifting amount of the single frequency band controlled by the corresponding phase-shifting transmission mechanism is obtained because the displacement amount of the movable parts corresponds to the corresponding phase.
Because it selects protruding rib of survey portion department optionally to walk arbitrary bayonet socket and both play the direction and play conflict and move the movable part of drive mechanism with shifting the phase and realize the effect of displacement detection, stretch out the indicator on the end through the measurement axle and just in time reflected the frequency channel that the drive mechanism corresponds with shifting the phase that is currently measuring, drive the measurement axle simultaneously again and outwards stretch out in order to show the scale on its scale, whole design simple structure is exquisite again, the operation is simple and easy and stable again, make things convenient for the accurate inclination of measuring and adjusting corresponding antenna of technician.
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 phase shift measurement apparatus according to an embodiment of the present invention;
FIG. 2 is a block diagram of a metering shaft of the phase shift measuring device provided in accordance with the present invention, showing one view thereof;
FIG. 3 is a view of a gauge axis structure of the phase shift measuring device provided in the present invention, showing another view thereof;
FIG. 4 is a schematic structural diagram of the front end of the measuring portion of the measuring shaft of the phase shift measuring device provided by the present invention;
FIG. 5 is a schematic view of a top end structure of a measuring shaft selecting and measuring portion of the phase shift measuring device provided by the present invention;
FIG. 6 is a schematic structural diagram of a support plate near one end of a phase shift measuring device provided by the present invention;
FIG. 7 is a schematic view of a viewing angle in a state of use of the phase shift measuring device provided by the present invention;
FIG. 8 is a schematic view of another view of the phase shift measurement device of the present invention in use;
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 phase-shifting measuring device, as shown in figure 1, which comprises a pair of supporting plates 1 which are parallel and opposite, a metering shaft 2 arranged on the pair of supporting plates 1 and at least two phase-shifting transmission mechanisms 3.
The main components of the phase shift transmission mechanism 3 are disposed between the pair of support plates 1, and include a movable component 31, a screw rod 32 (the thread structure of which is not shown in the figure), and a slide rod 33, wherein the two ends of the slide rod 33 and the screw rod 32 are supported on the first support plate 11 and the second support plate 12, respectively, and the two ends of the slide rod 33 can be fixed only by the support plates 1 without passing through the support plates 1. One end of the screw rod 32 passes through the second support plate 12, and a control part 321 is formed outside the second support plate 12, and the control part 321 can drive the screw rod 32 to rotate by external force. The movable member 31 is provided with a shaft hole 311 and a nut 312 (the internal thread structure of which is not shown in the drawing), the shaft hole 311 is sleeved on the slide bar 33 so as to be stressed and slide along the slide bar 33 without hindrance to perform a guiding function, and the nut 312 is engaged with the screw 32 to constitute a screw-nut transmission mechanism.
The principle of movement of the movable part 31 of the phase shifting transmission mechanism 3 is as follows: when the control portion 321 of the screw rod 32 is driven to rotate by external force, since the nut 312 of the movable member 31 is engaged with the screw rod 32 to form a screw nut transmission mechanism, when the screw rod 32 rotates, the movable member 31 can correspondingly move axially back and forth between the first support plate 11 and the second support plate 12 according to the different rotation directions of the screw rod 32, and the movable member 31 simultaneously makes corresponding axial sliding back and forth on the slide rod 33 through the shaft hole 311. It can be understood that, in practical applications, each phase shift transmission mechanism 3 performs an axial motion through the movable component 31 thereof to control the phase shift of a corresponding frequency band in the multi-frequency antenna in a linkage manner, and different phase shift transmission mechanisms 3 correspondingly control the phase shift of antennas in different frequency bands.
In this embodiment, the axis of movement of the movable element 31 is arranged parallel to the axis of the metering shaft 2, so as to make the overall device as compact as possible and avoid the addition of additional intermediate gearing.
The movable part 31 is provided with a groove 313 on a side close to the metering shaft 2, the groove 313 being used for partially embracing the metering shaft 2. The shape of the recess 313 matches the profile of the metering spindle 2 which it is to grip. In this embodiment, the groove 313 is an arc-shaped groove. The design that the movable component 31 clasps the metering shaft 2 through the groove 313 can ensure that the movable component 31 is more stably connected with the metering shaft 2 on one hand, avoid the movable component 31 from shaking in the phase shifting motion process, and in addition, be convenient for cooperate with the metering shaft 2, so that the convex strip 211 on the selective measuring part 21 of the metering shaft 2 can just abut against the movable component 31 to realize the limit measurement.
In this embodiment, the phase shift measurement device includes two phase shift transmission mechanisms 3, and the two phase shift transmission mechanisms 3 are disposed on two sides of the metering shaft 2. The movable part 31 of each phase shifting transmission mechanism 3 respectively embraces the metering shaft 2 and axially moves back and forth in a direction parallel to the axis of the metering shaft 2. The holding area of the recess 313 to the measuring shaft 2 can be set back from each other between the movable parts 31 of the two phase shifting gears 3. Under the precondition, the holding arc range of the groove 313 to the metering shaft can be changed appropriately. According to the principle, in other embodiments, the phase-shifting measuring device comprises three or more phase-shifting transmission mechanisms 3, and the plurality of phase-shifting transmission mechanisms 3 are arranged around the circumference of the metering shaft and respectively and partially hold the metering shaft. The design of the holding range of the measuring shaft 2 by the groove 313 of the movable part 31 of each phase shift transmission mechanism 3 only needs to make the plurality of movable parts 31 move back and forth in a direction parallel to the axis of the measuring shaft 2.
On both sides of the threaded rod 32 of each phase shifting transmission mechanism 3, there are also provided limit rings 34 for limiting the axial movement stroke of the movable part 31. The position of the limiting ring 34 of each phase shift transmission mechanism 3 on the screw 32 can be determined according to the range of controlling the phase shift of the corresponding single frequency band in the multi-frequency antenna by the phase shift transmission mechanism 3.
The measuring shaft 2 achieves the purpose of measuring the phase shift of a corresponding single frequency band in the multi-frequency antenna under the corresponding linkage control of the phase shift transmission mechanism 3 by measuring the relative movement distance of the movable part 31 of the phase shift transmission mechanism 3.
The specific structure of the measuring shaft 2 is shown in fig. 2 to 5, and the measuring shaft 2 sequentially includes a selection measuring unit 21, a slide bar unit 22, and a measuring unit 23.
The measuring shaft 2 has a measuring state, which is an operating state when it is stretched in use, and a reset state, which is an inoperative state when it is not stretched. In the reset state, the selecting and measuring part 21 is located on the outer side of the first support plate 11, the slide bar part 22 is located between the first support plate 11 and the second support plate 12, and the measuring part 23 is located on the outer side of the second support plate 12.
Select to survey portion 21 and be equipped with radial bellied rib 211, rib 211 can be an integrative lengthwise part with measurement shaft 2 integrated into one piece itself, rib 211's cross section can be square, also can be circular-arc or other cross sectional shapes all can, this embodiment, rib 211 be a bellied rectangular bar structure. In addition, the rib 211 may further include a contact 2111, and the shape of the contact 2111 may be pointed, smooth arc, or the like, as required. When the contact head 2111 is in the reset state of the metering shaft 2, it does not contact the first support plate 11, so that the metering shaft 2 can rotate more freely.
The slide bar portion 22 is designed with a smooth cylindrical surface to allow relatively free axial movement.
A scale 231 is provided on the surface of the measuring portion 23. In this embodiment, since the phase shift measuring device has two phase shift transmission mechanisms 3, the operator can read the value on the scale 231 conveniently, and therefore, scales on both surfaces are provided on the surface of the measuring portion 23. In other embodiments, when the phase shift measuring device has three or more phase shift transmission mechanisms 3, the measuring part 23 may also be provided with a multi-surface scale, so that the scale value can be visually read when the phase shift measuring device is adapted to measure the phase shift of different phase shift transmission mechanisms.
An indicator 24 is further provided at the front end of the measuring portion 23, and referring to fig. 4, the indicator 24 is an indicating mark corresponding to the rib 211 and indicating the circumferential position of the rib 211. In application, when the metering shaft 2 is rotated, the indicator 24 points at one of the phase shift transmission mechanisms 3, and then the phase shift value measured in the direction is the phase shift value of the phase shift transmission mechanism for controlling the corresponding antenna frequency band.
The measuring part 23 is further provided with a limiting member 232, and referring to fig. 1, the limiting member 232 is located on the measuring part 23 to abut against the adjacent second supporting plate 12 in the reset state of the measuring shaft 2, and is used for limiting the position of the measuring shaft 2 in the reset state. The radius of the limiting member 232 is larger than the dimensions of the slide bar part 22 and the measuring part 23, is coaxial with the slide bar part 22 and the measuring part 23, and can be integrally formed with the selective measuring part 21, the slide bar part 22 and the measuring part 23. In other embodiments, the position-limiting member 232 may also be a block or a detent structure.
Since the metering shaft 2 passes through the first and second support plates 11 and 12, the first and second support plates 11 and 12 are respectively provided with a first through hole 111 and a second through hole 121 through which the metering shaft 2 is supported.
As shown in fig. 6, two bayonets 112 are disposed at the edge of the through hole 111 of the first support plate 11 corresponding to the selected measuring portion 21, and the bayonets 112 allow the rib 211 to alternatively pass through to one movable component 31 corresponding to the selected measuring portion to be abutted against each other to achieve the limiting. In other embodiments, when the phase shift measuring device has three or more phase shift transmission mechanisms 3, the edge of the through hole 111 of the first support plate 11 is surrounded by a plurality of bayonets 112 whose number is consistent with that of the phase shift transmission mechanisms 3, so that the rib 211 can alternatively pass through the movable part 31 corresponding to the direction to realize the limit. It will be appreciated that the shape of the bayonet 112 is adapted to cooperate with the cross-sectional shape of the rib 211 so that the two fit relatively tightly to ensure that the rib 211 is guided correctly.
The second through hole 121 is a circular hole matching with the shape of the slide bar part 22. In the reset state of the measuring shaft 2, the stopper 232 abuts against the support plate portion around the second through hole 121 to limit the position of the measuring shaft 2 in the reset state.
In addition, the phase shift measuring device also comprises a packaging plate 4 parallel to the supporting plate 1 and a bottom plate 5 used for fixing the supporting plate 1, wherein the packaging plate 4 is vertically connected with the bottom plate 5. The packaging plate 4 is provided with a through hole 41, the measuring part 23 of the measuring shaft 2 passes through the through hole 41, an indication layer 42 which is used for providing readable information in cooperation with the indication of the indicator 24 of the measuring shaft 2 is arranged around the through hole 41, and the indication layer 42 indicates a corresponding frequency band identifier.
The package plate 4 generally shares the exposed package side plate inherent to the antenna, and the bottom plate 5 generally shares the reflector plate of the antenna.
The measuring shaft 2 is sleeved with a return spring 25 on the measuring part 23 between the limiting part 232 and the packaging plate 4, and when the measuring shaft 2 is in a reset state, the return spring 25 is in a free state without being pressed.
The phase shift measurement device provided in this embodiment specifically operates as follows:
in different application occasions, the phase shift of a single frequency band or a plurality of frequency bands of the antenna needs to be adjusted to meet the requirement.
The control portion 321 of the phase shift transmission mechanism 3 is connected with an external driving control device or other external manual control device to receive an external rotation torque, and the movable member 31 is directly or indirectly connected with the phase shift member of the antenna phase shifter to output a linear torque.
Referring to fig. 1 and 7, the phase shift of a certain frequency band of the antenna is controlled by the phase shift transmission mechanism 3a, when the frequency band signal needs to be phase shifted, an external control device (not shown) rotates the screw rod 32 by driving the control portion 321 of the phase shift transmission mechanism 3a, the movable part 31a of the phase shift transmission mechanism 3a can move axially between the first supporting plate 11 and the second supporting plate 12 according to the rotation direction of the screw rod 32, and the movable part 31a controls the phase shift of the corresponding single frequency band of the multi-frequency antenna in a linkage manner through the displacement. When the phase shift amount of the band signal is reached, the external control device stops driving the screw rod 32, and the movable member 31a stops moving and stays at a position of the screw rod 32.
The displacement amount of the movable member 31a matches the beam tilt angle of the antenna, and the beam tilt angle of the antenna differs, and the position at which the movable member 31a stops on the measuring shaft 2 differs. After the phase shift of the frequency band signal is completed, the phase shift of the frequency band signal of the antenna is measured by the phase shift measuring device provided by the invention.
When the measuring shaft 2 is in the reset state, the measuring shaft 2 is turned to the position of the corresponding phase shift transmission mechanism 3a of the frequency band signal to be measured at the front end of the measuring part 23 through the direction of the indicating piece 24. Correspondingly, the rib 211 of the selection part 21 faces the orientation of the phase shift transmission mechanism 3a to be measured.
Then, the measuring shaft 2 is pulled outward at the front end of the measuring portion 23 until the contact 2111 of the rib 211 contacts the movable component 31a, referring to fig. 7, the measuring shaft 2 is limited, and the pulling of the measuring shaft 2 is stopped, at which time, a scale value on the measuring portion 23 of the measuring shaft 2 can be read at a position indicated by the indication layer 42 of the packaging plate 4, referring to fig. 8, where the scale value corresponds to a beam tilt angle representing a certain frequency band of the antenna controlled by the phase shift transmission mechanism.
After the measurement of the beam inclination angle of the antenna in the frequency band is completed, the measuring shaft 2 is released, and the measuring shaft can be reset under the combined action of the spring 25 and the limiting piece 232.
After the metering shaft 2 is reset, the metering shaft 2 is in a rotatable state, and phase shift values of other frequency bands can be measured.
The above embodiments illustrate various embodiments of a phase shift measurement device and the working principle thereof provided by the present invention. Therefore, the phase-shift measuring device is simple in structure, and can realize the phase-shift measurement of multiple frequency bands in the same phase-shift measuring device.
In addition, the invention also provides a multi-frequency antenna, which is used for radiating signals of a plurality of frequency bands and a plurality of phase-shifting parts arranged corresponding to the frequency bands, each phase-shifting part is used for receiving external torque and executing the phase shifting of the signals of the corresponding frequency band, the antenna also comprises the phase-shifting measuring device, and the phase-shifting transmission mechanism of the phase-shifting measuring device is correspondingly connected with the phase-shifting parts one by one so as to transmit the external torque to the corresponding phase-shifting parts through the phase-shifting transmission mechanism to realize the phase shifting of the signals of the corresponding frequency bands.
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 (10)
1. The utility model provides a phase shift measuring device, includes parallel a pair of bearing plate in opposite directions and installs measurement axle and at least two phase shift drive mechanism on this pair of bearing plate, phase shift drive mechanism carry out axial motion and the phase shift of the single frequency channel that corresponds in the coordinated control multifrequency antenna through its movable part, its characterized in that:
the measuring shaft sequentially comprises a selecting and measuring part, a sliding rod part and a measuring part, wherein the surface of the measuring part is provided with a scale, the selecting and measuring part is provided with a rib protruding in the radial direction, the front end of the measuring part is provided with an indicating piece, and the indicating piece corresponds to the circumferential position of the indicating rib;
the phase-shifting transmission mechanism is provided with a movable component with a motion axis parallel to the axis of the metering shaft, and each movable component is arranged around the circumference of the metering shaft and partially holds the metering shaft;
the two bearing plates are respectively provided with a through hole for the through arrangement of the bearing metering shaft, the edge of the through hole of the bearing plate corresponding to the selecting and measuring part is provided with a plurality of bayonets in a surrounding way, and the bayonets allow the ribs to select to pass to one movable part corresponding to the direction to be abutted so as to realize the limiting.
2. The phase shift measurement device according to claim 1, characterized in that: when the metering shaft is in a reset state, the sliding rod part of the metering shaft is positioned between the two supporting plates, and the selecting and measuring part and the measuring part of the metering shaft are respectively positioned at the outer sides of the two supporting plates.
3. The phase shift measurement device according to claim 2, characterized in that: the measuring part is provided with a limiting piece, and the limiting piece is positioned on the measuring part and is abutted against the supporting plate adjacent to the measuring part in the reset state.
4. The phase shift measurement device according to claim 3, characterized in that: the measuring part of the measuring shaft passes through a through hole of the packaging plate parallel to the supporting plate, and an indicating layer which is used for providing readable information in cooperation with the indication of the indicating piece of the measuring shaft is arranged around the through hole.
5. The phase shift measurement device according to claim 4, wherein: the packaging plate is an inherent exposed packaging side plate of the antenna.
6. The phase shift measurement device according to claim 3, characterized in that: the measuring shaft is arranged between the limiting part and the packaging plate, a return spring is sleeved on the measuring part, and when the measuring shaft is in a reset state, the return spring is in a free state without being pressed.
7. The phase shift measurement device according to any one of claims 1 to 6, characterized in that: the phase-shifting transmission mechanism comprises the movable part, a screw rod and a slide rod, wherein both ends of the slide rod and the screw rod are respectively supported on the pair of supporting plates, one end of the screw rod forms a control part at the outer side of the supporting plates for driving the screw rod to rotate by external force, the movable part is provided with a shaft hole and a nut, the shaft hole is sleeved on the slide rod, and the nut is meshed with the screw rod to form the screw rod nut transmission mechanism.
8. The phase shift measurement device according to claim 7, wherein: one side of the movable component is provided with a groove for partially holding the metering shaft, and the holding ranges of the movable components and the metering shaft are mutually avoided.
9. The phase shift measuring device according to claim 7, wherein: and limiting rings for limiting the axial movement stroke of the movable part are arranged on two sides of the screw rod.
10. A multi-band antenna for radiating signals of a plurality of frequency bands and a plurality of phase shift units provided corresponding to the respective frequency bands, each phase shift unit being adapted to receive an external torque and perform phase shift of the signal of the corresponding frequency band, characterized in that: the antenna further comprises the phase-shifting measuring device as claimed in any one of claims 1 to 9, wherein the phase-shifting transmission mechanism of the phase-shifting measuring device is connected with the plurality of phase-shifting units in a one-to-one correspondence manner so as to transmit the external torque to the corresponding phase-shifting unit through the phase-shifting transmission mechanism to realize the phase shifting of the corresponding frequency band signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011639631.XA CN112751198A (en) | 2020-12-31 | 2020-12-31 | Multi-frequency antenna and phase-shifting measuring device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011639631.XA CN112751198A (en) | 2020-12-31 | 2020-12-31 | Multi-frequency antenna and phase-shifting measuring device thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113922013A (en) * | 2021-09-30 | 2022-01-11 | 京信通信技术(广州)有限公司 | Phase-shifting frequency-selecting device and multi-frequency antenna |
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| CN113922013A (en) * | 2021-09-30 | 2022-01-11 | 京信通信技术(广州)有限公司 | Phase-shifting frequency-selecting device and multi-frequency antenna |
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