CN112782475A

CN112782475A - Multi-frequency antenna and phase modulation measuring device thereof

Info

Publication number: CN112782475A
Application number: CN202011638621.4A
Authority: CN
Inventors: 黄潮生; 段红彬
Original assignee: Comba Telecom Technology Guangzhou Ltd; Jingxin RF Technology Guangzhou Co ltd
Current assignee: Comba Telecom Technology Guangzhou Ltd; Jingxin RF Technology Guangzhou Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-05-11

Abstract

The invention provides a phase modulation 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 movement through movable parts of the phase-shifting transmission mechanisms to control the phase shift of a corresponding single frequency band in a multi-frequency antenna in a linkage manner, the metering shaft of a selective measuring mechanism is rotated after the movable parts move for a certain distance to complete the phase shift of signals of the single frequency band, the metering shaft is driven by a transmission assembly to enable a detection piece to face the phase-shifting transmission mechanism to be measured, so that the moving range of one phase-shifting transmission mechanism can be selectively measured, and scale data of the metering shaft can be read when the detection piece is abutted against the movable parts by pulling the metering shaft. The invention also provides a multi-frequency antenna comprising the phase modulation measuring device.

Description

Multi-frequency antenna and phase modulation measuring device thereof

Technical Field

The invention relates to the technical field of communication, in particular to a multi-frequency antenna and a phase modulation 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 plurality of sets of phase-shifting transmission mechanisms are provided for each phase-shifting transmission mechanism, it is obviously unscientific, and theoretically, the phase-shifting effect of each frequency band signal can be measured by a common phase-shifting measurement device.

The existing phase modulation measuring device has complex structure and high cost, is not convenient for realizing the selective phase shift of a multi-band antenna, and how to realize the measuring device with one control and more control by a reasonable structure belongs to the continuously evolving category of the technical personnel in the field.

Disclosure of Invention

The invention aims to provide a phase modulation measuring device which is simple in structure and accurate in 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:

in a first aspect, a phase modulation measuring device is provided, which comprises a pair of parallel opposite supporting wall boards, and a phase-shift mechanism and at least two phase-shift transmission mechanisms mounted on the supporting wall boards, wherein the phase-shift transmission mechanisms perform axial movement through movable parts thereof to perform linkage control on phase shift of a corresponding single frequency band in a multi-frequency antenna, and the phase-shift mechanism comprises a detection part, a transmission assembly and a metering shaft:

the transmission assembly is used for correspondingly transmitting the each-directional movement of the metering shaft to the detection piece so as to enable the detection piece to move in the same direction;

the detecting parts are suitable for being opposite to the movable part of a corresponding phase shifting transmission mechanism at different circumferential positions so as to realize interference at the axial positions close to each other;

the measuring shaft passes through a clamping hole of one of the supporting wall plates and is exposed to the outside, the exposed end of the measuring shaft is provided with an indicator for indicating the circumferential position of the measuring shaft, and the surface of the measuring shaft is provided with a scale for indicating the exposed axial length of the measuring shaft.

Further, the transmission assembly includes a plurality of gears sequentially engaged with each other, a connection end of the metering shaft opposite to the exposed end thereof is mounted on a primary gear of the transmission assembly, and the detecting member is integrally formed or mounted on a final gear of the transmission assembly.

Furthermore, the gears of the transmission assembly are packaged in the same box body, the box body is sleeved with a plurality of guide rods arranged on the pair of supporting wall plates, the guide rods are sleeved on the rest gears except the shaft hole of the primary gear and used for connecting the metering shaft, and the axial movement of the metering shaft drives the axial movement of the box body.

Preferably, one of the guide rods is not provided through any of the gears, but only through the cartridge itself.

Furthermore, a plurality of phase-shifting transmission mechanisms are arranged around the circumference of the final gear, and movable parts of the phase-shifting transmission mechanisms are correspondingly distributed at different circumferential positions of the final gear and are provided with contact surfaces/clamping grooves which are convenient for the detection piece to butt against.

Preferably, the phase shift transmission mechanism includes the movable component, a screw rod and a slide rod, both ends of the slide rod and the screw rod are respectively supported on the pair of supporting wall boards, and one end of the screw rod forms a control part at the outer side of the supporting wall board for driving the screw rod to rotate by external force, the movable component 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 a screw rod nut mechanism.

Preferably, the metering shaft comprises a frequency selecting part close to the transmission assembly and a measuring part close to the exposed end of the transmission assembly, and a limiting part for separating the frequency selecting part and the measuring part, wherein the limiting part just abuts against the periphery of the clamping hole of one of the supporting wall boards when the exposed length of the metering shaft is minimum.

Preferably, be equipped with radial bellied rib in the frequency selection portion of measurement axle, on the edge of the card hole of one of supporting wall panel, correspond it is provided with a plurality of bayonets to move the total amount of transmission mechanism mutually, work as the circumferential motion of measurement axle results in the rib is suitable for when establishing with one of them bayonet phase card, the detector just is arranged in through axial motion alright conflict one move the circumferential position of the movable part of transmission mechanism mutually, and different bayonets result in the detector to be in the circumferential position that corresponds different movable parts.

Preferably, an encapsulation wall plate parallel to the supporting wall plate is further arranged on one side of the exposed end of the metering shaft, the metering shaft is arranged through a through hole in the encapsulation wall plate, and an indication layer for providing readable information in cooperation with indication of an indication piece of the metering shaft is arranged around the through hole.

Preferably, the packaging wall plate is an exposed packaging side plate inherent to the antenna.

Preferably, the measuring shaft is arranged between the limiting part of the measuring shaft and the packaging wall plate, a return spring is sleeved on the measuring part of the measuring shaft, and when the exposed length of the measuring shaft is minimum, the return spring is in a free state without being pressed.

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 to perform phase shifting of the signals of the corresponding frequency band, the antenna also comprises the phase-shifting measuring device, and a 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 part through the phase-shifting transmission mechanism to realize the phase shifting of the signals of the corresponding frequency band.

The technical scheme provided by the invention has the beneficial effects that:

the phase modulation measuring device provided by the invention is characterized in that at least two phase-shifting transmission mechanisms are arranged in the circumferential direction of a detection piece, the phase shift transmission mechanism performs axial movement through the movable component to control the phase shift of the corresponding single frequency band in the multi-frequency antenna in a linkage manner, a selecting and measuring mechanism with a transmission component is arranged among the phase-shifting transmission mechanisms, a metering shaft of the selecting and measuring mechanism is rotated, the metering shaft is driven by the transmission component to enable a detection piece to face the phase-shifting transmission mechanism to be measured, so that the moving range of one phase-shifting transmission mechanism can be selectively measured, reading the scale data of the measuring shaft when the detecting piece is abutted against the movable part by pulling the measuring shaft, the moving range of the movable component is correspondingly known, and the phase shift amount of the single frequency band controlled by the corresponding phase shift transmission mechanism is obtained because the displacement amount of the movable component corresponds to the corresponding phase shift.

Because the effect of thus realizing the displacement detection of the movable part of the transmission mechanism that shifts is contradicted selectively to the detection piece, stretch out the indicator of serving through the measurement axle and just in time reflected the frequency channel that the transmission mechanism that shifts that is currently measuring corresponds, drive the scale that the measurement axle outwards stretched out in order to show its scale in step again simultaneously, whole design simple structure is exquisite again, and the operation is simple and easy stable again, makes 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 view of a phase modulation measuring apparatus in a reset state according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a selective measurement mechanism according to an embodiment of the present disclosure;

FIG. 3 is an exploded view of the transmission assembly and cartridge in one embodiment of the present invention;

FIG. 4 is a schematic structural view of a transmission assembly packaged in a case according to an embodiment of the present invention;

FIG. 5 is a side view of a phase modulation measuring device according to an embodiment of the present invention;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5;

FIG. 7 is a cross-sectional view taken along line C-C of FIG. 5;

FIG. 8 is a cross-sectional view taken in the direction E-E of FIG. 5;

FIG. 9 is a schematic view of a second support wall panel in one embodiment of the present invention;

FIG. 10 is a schematic diagram illustrating another view of the phase modulation measuring apparatus in a reset state according to an embodiment of the present invention;

FIG. 11 is a view of the exterior structure of the package panel wall in accordance with one embodiment of the present invention.

FIG. 12 is a schematic structural diagram of a phase modulation measuring apparatus in an embodiment of the present invention in a use state;

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 modulation measuring device, which comprises a pair of parallel opposite supporting wall plates 1, a selective measuring mechanism 2 arranged on the supporting wall plates 1 and at least two phase-shifting transmission mechanisms 3, as shown in figure 1.

The main components of the phase shift transmission mechanism 3 are disposed between the pair of supporting wall boards 1, and include a movable component 31, a screw rod 32 (the external thread structure of which is not shown in the figure), and a sliding rod 33, wherein the two ends of the sliding rod 33 and the screw rod 32 are supported on the first supporting wall board 11 and the second supporting wall board 12, respectively, wherein the two ends of the sliding rod 33 can be fixed only by the supporting wall boards 1 without passing through the supporting wall boards 1. One end of the screw rod 32 passes through the second supporting wall plate 12, and a control part 321 is formed at the outer side of the second supporting wall plate 12, and the control part 321 can drive the screw rod 32 to rotate by an 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 supporting wall plate 11 and the second supporting wall plate 12 according to the different rotating directions of the screw rod 32, and the movable member 31 simultaneously makes corresponding axial sliding back and forth on the sliding 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 number of the phase-shifting transmission mechanisms 3 is four, and the phase-shifting transmission mechanisms 3 are uniformly distributed and fixed between the first supporting wall plate 11 and the second supporting wall plate 12, and the mutual distance between the phase-shifting transmission mechanisms 3 can make each movable component 31 avoid each other when moving axially.

As shown in fig. 2, the selective measuring mechanism 2 includes a detecting member 21, a transmission assembly 22, and a measuring shaft 23:

the transmission assembly 22 is used for transmitting each direction movement of the metering shaft 23, mainly including circumferential movement and linear movement, to the detecting member 21 correspondingly so as to enable the detecting member to move in the same direction.

Referring to fig. 3 and 4, the transmission assembly 22 includes a primary gear 221 connected to the measuring shaft 23, a final gear 223 fixedly connected to the detecting member 21, and an intermediate transmission gear 222 connecting the final gear 223 and the primary gear 221. The three gears are meshed in sequence. The metering shaft 23 is fixedly connected with the primary gear 221, the metering shaft 23 can lock the connecting end in the shaft core slot of the primary gear 221 in a screw mode to achieve fixed connection, and when the metering shaft 23 is rotated, the primary gear 221 and the metering shaft 23 move in the same direction. At the same time, the primary gear 221 drives the intermediate drive gear 222, which drives the final gear 223. Since the transmission direction of the intermediate transmission gear 222 is opposite to that of the primary gear 221, the intermediate transmission gear 222 can enable the rotation direction of the final gear 223 to be consistent with that of the primary gear 221, so that the purpose of rotating the metering shaft 23 and enabling the detecting member 21 to rotate in the same direction is achieved.

The four phase shifting transmission mechanisms 3 are arranged around the circumference of the final gear 223, and referring to fig. 5 to 8, the movable part 31 of each phase shifting transmission mechanism 3 is distributed at different circumferential positions of the final gear 223, and the surface of the movable part 31 opposite to the detecting member 21 has a contact surface which is convenient for the detecting member 21 to collide and detect, and the contact surface can be a plane surface or a slot structure.

The transmission assembly 22 is gear-housed in the same box 4, wherein, with reference to fig. 4, the final gear 223 is partially exposed outside the box 4, wherein the detecting member connected to the final gear 223 is also exposed outside the box 4. The detecting member 21 may be integrally formed with the final gear 223, or may be a separate component, and is mounted on the final gear 223 of the transmission assembly 22, and the shape thereof may be a square block, a pointed tip, a circular surface, etc., which is not limited herein.

The detecting member 21 is rotatable in response to an external force to rotate the final gear 223 so as to be adapted to be opposed to the movable member 31 of a corresponding one of the phase shift transmission mechanisms 3 at different circumferential positions, and when the phase modulation measuring apparatus is in a measuring state, the detecting member 21 is controlled to be axially movable to the opposed movable member 31 so as to be brought into contact with each other at axial positions close to each other.

Box body 4 sets up and installs many guide bars 5 of a pair of supporting wallboard 1 on, refer to fig. 1, wherein except that the shaft hole 2211 of primary gear 221 is used for connecting metering shaft 23 is divided equally and is established one respectively with its shaft hole (not sign) cover guide bar 5, guide bar 5 with metering shaft 23 parallel arrangement, drive this box body 4 along during metering shaft 23 axial motion guide bar 5 makes axial motion. One of the guide rods 5 does not pass through any gear and only passes through the box body 4 to play a role in balance positioning.

The metering shaft 23 is generally elongated and includes a frequency selecting portion 231 adjacent the drive assembly 22 and a measuring portion 232 adjacent an exposed end 234 of the metering shaft 23, and a spacing member 233 separating the frequency selecting portion 231 and the measuring portion 232. The connecting end of the frequency selecting part 231 of the measuring shaft 23 opposite to the exposed end 234 of the measuring shaft is fixedly connected with the primary gear 221 through the shaft hole 2211.

The selective measuring mechanism 2 has a measuring state in which the measuring shaft 23 is stretched after rotating in the measuring direction, and a reset state in which the measuring shaft is not stretched. The measuring shaft 23 is fixedly connected with the transmission assembly 22 through the end of the frequency selecting part 231, the measuring shaft 23 passes through the second supporting wall plate 12 through the clamping hole 121 of the second supporting wall plate 12, so that when the selecting and measuring mechanism 2 is in a reset state, the frequency selecting part 231 is positioned between the first supporting plate 11 and the second supporting plate 12, and the measuring part 232 is exposed out of the second supporting wall plate 12.

The frequency selecting portion 231 of the measuring shaft 23 is provided with a rib 2311 protruding in the radial direction, the rib 2311 and the measuring shaft 23 are integrally formed into an integral longitudinal member, the cross section of the rib 2311 may be square, circular arc or other cross section shapes, and in this embodiment, the rib 2311 is a protruding rectangular strip structure. The rib 2311 is not in contact with the second support plate 12 in the reset state of the metering shaft 23, so that the metering shaft 23 can rotate more freely.

On the edge of the engaging hole 121 of the second supporting wall plate 12, a plurality of engaging openings 1211 corresponding to the number of the phase shifting actuators 3 are provided, and with reference to fig. 9 and 12, the circumferential movement of the metering shaft 23 causes the rib 2311 to be adapted to engage with one of the engaging openings 1211. In the measuring state of the selecting and measuring mechanism 2, after the measuring shaft 23 rotates to the direction corresponding to the phase shift transmission mechanism 3 to be measured, the measuring and measuring shaft 23 is stretched to drive the detecting member 31 to be disposed at the circumferential position where the detecting member 31 can abut against the movable member 31 of the phase shift transmission mechanism 3 through axial movement, and at this time, the rib 2311 of the measuring shaft is disposed in the bayonet 1211 corresponding to the bayonet 121. In this embodiment, the number of the bayonets 1211 is equal to the number of the phase shift transmission mechanisms 3, and is four. When measuring the phase shift of different phase shifting actuators 3, the ribs 2311 are placed in the corresponding bayonets 1211.

The rib 2311 mainly functions in that in the measuring state of the selecting and measuring mechanism 2, the measuring shaft 23 rotates to the direction of the target phase shift transmission mechanism 3 to be measured, and after the measuring shaft 23 is stretched to start measuring, the rib 2311 is placed in the corresponding bayonet 1211, so that the position of the measuring shaft 23 can be limited, the measuring shaft cannot be rotated any more, and the selecting and measuring mechanism 2 cannot cause measuring errors due to accidental rotation of the measuring shaft 23 in the normal working state. Therefore, in other embodiments, the number of the ribs 2311 may be one, two or four, and the position of the ribs 2311 only needs to be set in the bayonet 1211 to limit the metering shaft 23 in the measuring state.

The measuring part 232 is provided with a scale 2321 on the surface. In this embodiment, since the phase modulation measuring apparatus has four phase shift transmission mechanisms 3, so as to facilitate the operator to read the value on the scale 2321, the four-sided scale is correspondingly arranged on the surface of the measuring portion 232, so that the scale value can be visually read when the phase modulation measuring apparatus is adapted to measuring the phase shift of different phase shift transmission mechanisms 3.

An indicator piece 2341 is also provided on the exposed end 234 of the metering shaft 23, and referring to fig. 11, the indicator piece 2341 is an indicator flag piece corresponding to the probe member 21 for indicating the circumferential position of the probe member 21. In use, when the measuring shaft 23 is rotated, the indicating member 2341 points to the mark of a predetermined one of the phase shift actuators 3, and the measured phase shift value of the detecting member 21 in this direction is the phase shift value of the phase shift actuator controlling the corresponding antenna frequency band.

The limiting member 233 just abuts against the periphery of the clamping hole 121 of the second supporting wall plate 12 when the exposed length of the metering shaft 23 is minimum, i.e. in the reset state of the selecting and measuring mechanism 2. The limiting member 233 is larger than the frequency selecting portion 231 and the measuring portion 232, and is coaxial with the frequency selecting portion 231 and the measuring portion 232, and the three portions can be formed by integral molding. In other embodiments, the limiting member 233 can also be a block or a detent structure.

The phase modulation measuring device also comprises a bottom plate 6 used for fixing the supporting plate 1 and an encapsulation wall plate 7 parallel to the supporting plate 1, wherein the encapsulation wall plate 7 is vertically connected with the bottom plate 6. The packaging wall plate 7 is provided with a through hole 71, the measuring portion 232 of the measuring shaft 23 penetrates through the through hole 71, an indication layer 72 for providing readable information in cooperation with the indication of the indicator 2341 of the measuring shaft 23 is arranged around the through hole 71, and the indication layer 72 indicates the corresponding frequency band identifier through characters or symbols.

The package plate 7 generally shares the exposed package side plate inherent to the antenna, and the bottom plate 6 generally shares the reflector plate of the antenna.

The measuring shaft 23 is sleeved with a return spring 8 on the measuring part 232 between the limiting part 233 and the packaging plate 7, and when the measuring shaft 23 is in a return state, the return spring 8 is in a free state without being pressed.

The specific working principle of the phase modulation measuring device provided by the embodiment is 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 to 12, the phase shift of a certain frequency band of the antenna is controlled by the phase shift transmission mechanism 3, 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 3, the movable part 31 of the phase shift transmission mechanism 3 can move axially 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 part 31 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 31 stops moving and stays at a certain position of the screw rod 32.

The displacement amount of the movable member 31 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 31 stops on the gauge screw 32 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 modulation measuring device provided by the invention.

When the measuring shaft 23 is in the reset state, the exposed end 234 of the measuring part 232 is used to rotate the measuring shaft 23 to the position of the phase shift transmission mechanism 3 corresponding to the frequency band signal to be measured by the pointing direction of the indicating member 2341. Correspondingly, the metering shaft 23 drives the detecting member 21 via the transmission assembly 22 to face the position of the phase shift transmission mechanism 3 to be measured.

The metering shaft 23 is then pulled outwards at the exposed end 234 until the detector 21 comes into contact with the movable part 31, the detector 21 is jammed and the pulling of the metering shaft 23 is stopped, at which point the ribs 2311 are placed in the corresponding bayonets 1211, limiting the metering shaft 23 from being accidentally rotated. At this time, the scale 2321 on the measuring part 232 of the measuring shaft 23 is read at the position indicated by the indication layer 72 of the packaging wall plate 7, and referring to fig. 12, the scale corresponds to the beam tilt angle corresponding to a certain frequency band of the antenna controlled by the measured phase shift transmission mechanism.

After the measurement of the beam inclination angle of the antenna in the frequency band is completed, the measuring shaft 23 is released, and the measuring shaft can be reset under the combined action of the spring 8 and the limiting piece 233.

After the metering shaft 23 is reset, the metering shaft 23 is in a rotatable state, and phase shift values of other frequency bands can be measured.

As mentioned above, the phase shift actuator 3 corresponds to the number of the

bayonets

1211 and 1211, and according to this principle, in other embodiments, the number of the phase shift actuator 3 may be two, three or five, etc., and a plurality of bayonets are provided accordingly, so that the mutual avoiding relationship of the movable members between the phase shift actuators 3 is treated. That is, the number of the phase shift transmission mechanisms 3 of the present invention can be flexibly set by those skilled in the art according to the inventive spirit of the present application, so that the embodiments of the present invention can be more abundantly evolved.

The above embodiments illustrate various embodiments of a phase modulation measuring apparatus 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 to perform phase shifting of the signals of the corresponding frequency band, the antenna also comprises the phase-shifting measuring device, and a 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

1. The utility model provides a phase modulation measuring device, includes parallel a pair of supporting wallboard in opposite directions and installs selection survey mechanism and at least two transmission device that phase shift on this pair of supporting wallboard, the transmission device that phase shift 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, select survey mechanism including detecting piece, drive assembly and measurement axle:

2. Phase modulation measuring apparatus according to claim 1, characterized in that: the transmission assembly comprises a plurality of gears which are meshed in sequence, the connecting end of the metering shaft opposite to the exposed end of the metering shaft is arranged on the primary gear of the transmission assembly, and the detection piece is integrally formed or arranged on the final gear of the transmission assembly.

3. Phase modulation measuring apparatus according to claim 2, characterized in that: the gears of the transmission assembly are packaged in the same box body, the box body is sleeved with a plurality of guide rods arranged on the pair of supporting wall plates, the guide rods are sleeved with the rest gears except the shaft hole of the primary gear and used for connecting the metering shaft, and the axial movement of the metering shaft drives the axial movement of the box body.

4. Phase modulation measuring apparatus according to claim 3, characterized in that: one of the guide rods is not arranged through any gear and only arranged through the box body.

5. Phase modulation measuring apparatus according to claim 2, characterized in that: the plurality of phase shifting transmission mechanisms are arranged around the circumference of the final gear, and movable parts of the phase shifting transmission mechanisms are correspondingly distributed at different circumferential positions of the final gear and are provided with contact surfaces/clamping grooves which are convenient for the detection piece to collide and detect.

6. Phase modulation measuring apparatus according to claim 5, characterized in that: the phase-shifting transmission mechanism comprises a movable part, a screw rod and a slide rod, wherein the two ends of the slide rod and the screw rod are respectively supported on the pair of supporting wallboards, one end of the screw rod forms a control part at the outer side of the supporting wallboards so as to drive 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 a screw rod nut mechanism.

7. Phase modulation measurement apparatus according to any one of claims 1 to 6, characterized in that: the metering shaft comprises a frequency selection part close to the transmission assembly, a measuring part close to the exposed end of the transmission assembly and a limiting part for separating the frequency selection part and the measuring part, and the limiting part just props against the periphery of a clamping hole of one of the supporting wall plates when the exposed length of the metering shaft is minimum.

8. Phase modulation measuring apparatus according to claim 7, characterized in that: be equipped with radial bellied rib in the frequency selection portion of measurement axle, on the edge in the card hole of one of supporting wallboard, correspond shift transmission mechanism's total amount is provided with a plurality of bayonets, works as the circumferential motion of measurement axle leads to the rib is suitable for when establishing with one of them bayonet socket looks card, the detector just is arranged in through axial motion alright conflict one shift transmission mechanism's movable part's circumferential position, and different bayonets lead to the detector to be in the circumferential position that corresponds different movable part.

9. Phase modulation measuring apparatus according to claim 7, characterized in that: the measuring shaft is arranged on the exposed end of the measuring shaft, the supporting wall plate is arranged on the exposed end of the measuring shaft, the measuring shaft penetrates through a through hole in the packaging wall plate, and an indicating layer used for providing readable information in cooperation with indication of an indicating piece of the measuring shaft is arranged around the through hole.

10. Phase modulation measuring apparatus according to claim 9, characterized in that: the packaging wallboard is an inherent exposed packaging side plate of the antenna.

11. Phase modulation measuring apparatus according to claim 9, characterized in that: the measuring shaft is between the limiting part of the measuring shaft and the packaging wallboard, a reset spring is sleeved on the measuring part of the measuring shaft, and when the exposed length of the measuring shaft is minimum, the reset spring is in a free state without being pressed.

12. 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 modulation measuring device as claimed in any one of claims 1 to 11, wherein the phase shift transmission mechanism of the phase modulation measuring device is connected with the plurality of phase shift parts in a one-to-one correspondence manner so as to transmit the external torque to the corresponding phase shift parts through the phase shift transmission mechanism to realize the phase shift of the corresponding frequency band signals.