Multi-frequency antenna and phase modulation measurement device thereof

Abstract

The phase-adjusting measuring device provided by the present invention has at least two phase-shifting transmission mechanisms arranged in the circumferential direction of the metering shaft. The phase-shifting transmission mechanism controls the phase shift of the corresponding single frequency band in the multi-frequency antenna by executing axial movement through its movable parts. After the movable parts move a certain distance to complete the phase shift of the single frequency band signal, the metering shaft of the selection mechanism is rotated. The metering shaft is driven by the transmission assembly to move the detection part toward the phase-shifting transmission mechanism to be measured, thereby realizing the selective measurement of the moving range of one of the phase-shifting transmission mechanisms. When the detection part is in conflict with the movable part by pulling the metering shaft, the scale data of the metering shaft is read. The phase-adjusting measuring device provided by the present invention has a simple structure and is easy to operate. The present invention also provides a multi-frequency antenna including the phase-adjusting measuring device.

Description

Technical Field

[0001] The present invention relates to the technical field of communication technology, and in particular to a multi-frequency antenna and a phase modulation measurement device thereof. Background Art

[0002] Mobile communications have developed to the present day and have entered the 5G era, with increasingly higher requirements for communication quality. Antennas are front-end devices of communication systems, and their performance is particularly important to communication quality. Phase shifters are one of the core modules of base station electrically adjustable antennas. In practical applications, electrically adjustable antennas need to phase shift the transmitted signal to adjust the tilt angle of the antenna beam. The phase shift process is a high-precision control process, and precise structures play a key role in precise phase shifting. Similarly, accurately measuring the phase shift amount is also crucial for implementing and maintaining phase shift control. Therefore, it is necessary to match the antenna's phase shift control component with a higher-precision phase shift measurement component.

[0003] Each electrically-adjustable antenna usually includes multiple radiating element arrays for radiating multiple frequency band signals. Each radiating element column is generally matched with multiple corresponding phase shifters, and these phase shifters are usually connected to a common phase shift component. By linearly moving the phase shift component through a phase shift transmission mechanism, the corresponding multiple phase shifters of the same radiating element column can be linked to perform synchronous phase shifting, so that the signal fed into each corresponding radiating element meets the desired phase requirement, and the tilt angle of the antenna beam corresponding to the radiating element column is adjusted as desired. To adapt to this situation, a set of phase shift transmission mechanisms is required to be set for a common phase shift component corresponding to a frequency band signal. Therefore, it can be understood that multiple sets of phase shift transmission mechanisms need to be configured in each electrically-adjustable antenna. In this case, it is obviously unscientific to provide a set of phase shift measurement components for each phase shift transmission mechanism. In theory, a common phase adjustment measurement device can be used to measure the phase shift effect of each frequency band signal.

[0004] Existing phase modulation measurement devices have complex structures and high costs. At the same time, it is not convenient to realize selective phase shifting of multi-band antennas. How to realize such a one-to-many measurement device with a reasonable structure is a field of continuous evolution for technicians in this field. Summary of the invention

[0005] One of the purposes of the present invention is to provide a phase modulation measurement device with simple structure and precise measurement and control.

[0006] Another object of the present invention is to provide a multi-frequency antenna.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] In a first aspect, a phase adjustment measurement device is provided, comprising a pair of parallel supporting wall plates, a measurement mechanism and at least two phase shift transmission mechanisms installed on the pair of supporting wall plates, wherein the phase shift transmission mechanism controls the phase shift of a corresponding single frequency band in a multi-frequency antenna by performing axial movement through its movable parts, and the measurement mechanism comprises a detection member, a transmission assembly and a measuring shaft:

[0009] The transmission assembly is used to transmit the directional motion of the metering shaft to the detection member so that it moves in the same direction;

[0010] The detection member is adapted to be opposite to a movable component of a corresponding phase-shift transmission mechanism at different circumferential positions so as to achieve mutual interference at axial positions close to each other;

[0011] The metering shaft passes through a clamping hole of one of the supporting wall plates and is exposed to the outside. An indicator indicating its circumferential position is provided at its exposed end, and a scale indicating its exposed axial length is provided on its surface.

[0012] Furthermore, the transmission assembly includes a plurality of gears meshing in sequence, the connecting end of the metering shaft opposite to its exposed end is mounted on the primary gear of the transmission assembly, and the detection member is integrally formed or mounted on the final gear of the transmission assembly.

[0013] Furthermore, the gears of the transmission assembly are encapsulated in the same box body, and the box body is sleeved on multiple guide rods installed on the pair of supporting wall panels, wherein except for the axial hole of the primary gear used to connect the metering shaft, the remaining gears are respectively sleeved with one of the guide rods through their axial holes, and the axial movement of the metering shaft drives the axial movement of the box body.

[0014] Preferably, one of the guide rods does not pass through any of the gears, but is only arranged through the box body itself.

[0015] Furthermore, a plurality of the phase-shifting transmission mechanisms are arranged around the circumference of the final gear, and the movable parts of each phase-shifting transmission mechanism are correspondingly distributed at different circumferential positions of the final gear, and have contact surfaces / slots that facilitate interference detection by the detection member.

[0016] Preferably, the phase-shifting transmission mechanism includes the movable part, the screw and the sliding rod, the sliding rod and the screw are supported at both ends on the pair of supporting wall panels respectively, and one end of the screw forms a control part on the outside of the supporting wall panel for external force to drive the screw to rotate, the movable part is provided with an axial hole and a nut, the axial hole is sleeved on the sliding rod, and the nut is meshed with the screw to form a screw-nut mechanism.

[0017] Preferably, the metering shaft includes a frequency selection portion close to the transmission assembly and a measuring portion close to its exposed end, and a limit member separating the frequency selection portion and the measuring portion, wherein the limit member just contacts the vicinity of the clamping hole of one of the supporting wall panels when the exposed length of the metering shaft is minimum.

[0018] Preferably, radially protruding ribs are provided on the frequency selection portion of the metering shaft, and a plurality of bayonet holes are provided on the edge of the clamping hole of one of the supporting wall panels corresponding to the total amount of the phase shifting transmission mechanism. When the circumferential movement of the metering shaft causes the rib to be adapted to be clamped with one of the bayonet holes, the detection member is placed at a circumferential position at which it can contact a movable part of the phase shifting transmission mechanism through axial movement, and different bayonet holes cause the detection member to be at circumferential positions corresponding to different movable parts.

[0019] Preferably, a packaging wall panel parallel to the supporting wall panel is provided on one side of the exposed end of the metering shaft, and the metering shaft passes through a through hole on the packaging wall panel. An indication layer is provided around the through hole to cooperate with the indication of the indicator of the metering shaft to provide readable information.

[0020] Preferably, the packaging wall panel is an exposed packaging side panel inherent to the antenna.

[0021] Preferably, a return spring is sleeved on the measuring portion of the metering shaft between its stopper and the packaging wallboard, and when the exposed length of the metering shaft is the smallest, the return spring is in a free state without pressure.

[0022] On the other hand, the present invention also provides a multi-frequency antenna for radiating signals of multiple frequency bands and multiple phase shifting components arranged corresponding to each frequency band, each phase shifting component is used to receive external torque and perform phase shifting of the signal of the corresponding frequency band. The antenna also includes the above-mentioned phase adjustment measurement device, and the phase shifting transmission mechanism of the phase adjustment measurement device is connected one-to-one with the multiple phase shifting components so as to transmit the external torque to the corresponding phase shifting component through the phase shifting transmission mechanism to achieve phase shifting of the signal of the corresponding frequency band.

[0023] The beneficial effects brought by the technical solution provided by the present invention are:

[0024] The phase adjustment measurement device provided by the present invention has at least two phase-shifting transmission mechanisms arranged in the circumferential direction of the detection member. The phase-shifting transmission mechanism controls the phase shift of the corresponding single frequency band in the multi-frequency antenna by executing axial movement through its movable parts. A selection mechanism with a transmission component is arranged between the multiple phase-shifting transmission mechanisms. The metering shaft of the selection mechanism is rotated. The metering shaft is driven by the transmission component to move the detection member toward the phase-shifting transmission mechanism to be measured, thereby realizing the selective measurement of the moving range of one of the phase-shifting transmission mechanisms. When the metering shaft is pulled to make the detection member collide with the movable part, the scale data of the metering shaft is read, and the moving range of the movable part is correspondingly known. Since the displacement of the movable part corresponds to the corresponding phase shift, the phase shift of the single frequency band controlled by the corresponding phase-shifting transmission mechanism is obtained.

[0025] Since the detection element can selectively contact the movable parts of the phase-shifting transmission mechanism to achieve the function of displacement detection, the indicator on the extended end of the measuring shaft just reflects the frequency band corresponding to the phase-shifting transmission mechanism currently being measured, and at the same time synchronously drives the measuring shaft to extend outward to display the scale on its ruler. The entire design structure is simple and exquisite, the operation is easy and stable, and it is convenient for technicians to accurately measure and adjust the inclination angle of the corresponding antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for describing the embodiments of the present invention are briefly introduced below.

[0027] Figure 1 A schematic structural diagram of a phase modulation measurement device in a reset state at one viewing angle in an embodiment provided by the present invention;

[0028] Figure 2 A schematic diagram of the structure of a test selection mechanism in an embodiment of the present invention;

[0029] Figure 3 A structural exploded view of a transmission assembly and a box body in an embodiment provided by the present invention;

[0030] Figure 4 A schematic diagram of the structure of a transmission assembly after being encapsulated in a box body in an embodiment provided by the present invention;

[0031] Figure 5 A side view of the phase modulation measurement device structure in one embodiment of the present invention;

[0032] Figure 6 for Figure 5 Cross-sectional view in the BB direction;

[0033] Figure 7 for Figure 5 Cross-sectional view in CC direction;

[0034] Figure 8 for Figure 5 Cross-sectional view in the EE direction;

[0035] Fig. 9 A schematic diagram of a second supporting wall panel in an embodiment provided by the present invention;

[0036] Fig.10 A schematic structural diagram of another perspective of a phase modulation measurement device in a reset state in an embodiment provided by the present invention;

[0037] Fig.11 A view of the external structure of a package panel wall in an embodiment provided by the present invention.

[0038] Fig.12 A schematic structural diagram of a phase modulation measurement device in use according to an embodiment of the present invention; DETAILED DESCRIPTION

[0039] Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein, which are instead provided for a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0040] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "connected" may be directly connected or indirectly connected through intermediate components (elements). The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0041] It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish between devices, modules or units, and are not used to limit these devices, modules or units to be different devices, modules or units, nor are they used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0042] The present invention provides a phase modulation measurement device, such as Figure 1 The method comprises a pair of parallel and opposite supporting wall panels 1, a selection mechanism 2 and at least two phase-shifting transmission mechanisms 3 installed on the pair of supporting wall panels 1.

[0043] The main components of the phase shift transmission mechanism 3 are arranged between the pair of supporting wall panels 1, and include a movable component 31, a screw rod 32 (its external thread structure is not shown in the figure) and a slide rod 33. The two ends of the slide rod 33 and the screw rod 32 are supported on the first supporting wall panel 11 and the second supporting wall panel 12 respectively, wherein both ends of the slide rod 33 do not need to pass through the supporting wall panel 1, and only the two ends of the slide rod 33 can be fixed by the supporting wall panel 1. One end of the screw rod 32 passes through the second supporting wall panel 12, and a control part 321 is formed on the outer side of the second supporting wall panel 12. The control part 321 can drive the screw rod 32 to rotate by external force. The movable component 31 is provided with an axial hole 311 and a nut 312 (its internal thread structure is not shown in the figure). The axial hole 311 is sleeved on the slide rod 33 so that it can be subjected to force and slide back and forth along the slide rod 33 without obstacles, playing a guiding role. The nut 312 is meshed with the screw rod 32 to form a screw nut transmission mechanism.

[0044] The movement principle of the movable part 31 of the phase-shift transmission mechanism 3 is as follows: when the control part 321 of the screw 32 rotates under the drive of an external force, the nut 312 of the movable part 31 meshes with the screw 32 to form a screw-nut transmission mechanism. When the screw 32 rotates, the movable part 31 can move back and forth axially between the first supporting wall panel 11 and the second supporting wall panel 12 according to the different rotation directions of the screw 32, and the movable part 31 simultaneously slides back and forth axially on the slide rod 33 through the shaft hole 311. It can be understood that in actual applications, each phase-shift transmission mechanism 3 controls the phase shift of a corresponding frequency band in the multi-frequency antenna through the axial movement of its movable part 31, and different phase-shift transmission mechanisms 3 control the phase shift of antennas of different frequency bands.

[0045] In this embodiment, there are four phase-shifting transmission mechanisms 3, which are evenly distributed and fixed between the first supporting wall panel 11 and the second supporting wall panel 12, and the phase-shifting transmission mechanisms 3 are arranged at a distance that allows each movable component 31 to avoid each other during axial movement.

[0046] like Figure 2 As shown, the measuring mechanism 2 includes a detection member 21, a transmission assembly 22 and a metering shaft 23:

[0047] The transmission assembly 22 is used to transmit the various directional movements of the metering shaft 23, mainly including circumferential movement and linear movement, to the detection member 21 to make it move in the same direction.

[0048] Combination Figure 3 and Figure 4The transmission assembly 22 includes a primary gear 221 connected to the metering shaft 23, a final gear 223 fixedly connected to the detection member 21, and an intermediate transmission gear 222 connecting the final gear 223 and the primary gear 221. The above three gears are meshed in sequence. The metering shaft 23 is fixedly connected to the primary gear 221, and the metering shaft 23 can be fixedly connected by screwing the connecting end into the shaft core slot of the primary gear 221. When the metering shaft 23 is rotated, the primary gear 221 moves in the same direction as the metering shaft 23. At the same time, the primary gear 221 drives the intermediate transmission gear 222, and the intermediate transmission gear drives the final gear 223. Since the transmission directions of the intermediate transmission gear 222 and the primary gear 221 are opposite, the intermediate transmission gear 222 can make the rotation direction of the final gear 223 consistent with the direction of the primary gear 221, thereby achieving the purpose of rotating the metering shaft 23 and making the detection member 21 rotate in the same direction.

[0049] The four phase shift transmission mechanisms 3 are arranged around the circumference of the final gear 223, referring to Figures 5 to 8 The movable parts 31 of each phase-shifting transmission mechanism 3 are correspondingly distributed at different circumferential positions of the final gear 223. The surface of the movable part 31 opposite to the detection member 21 has a contact surface that facilitates the detection of the detection member 21. The contact surface can also be a plane or a slot structure.

[0050] The gears of the transmission assembly 22 are encapsulated in the same box body 4, wherein the reference Figure 4 The final gear 223 is partially exposed outside the box body 4, and the detection member connected to the final gear 223 is also exposed outside the box body 4. The detection member 21 can be integrally formed with the final gear 223, or can be an independent component installed on the final gear 223 of the transmission assembly 22, and its shape can be square, pointed, round, etc., which is not limited here.

[0051] The detection member 21 can rotate as the final gear 223 is rotated by an external force, so as to be adapted to be opposite to a movable component 31 of a corresponding phase shift transmission mechanism 3 at different circumferential positions. When the phase adjustment measurement device is in a measuring state, the detection member 21 can be controlled to move axially to the relative movable component 31, and the two can collide with each other at axial positions close to each other.

[0052] The box body 4 is mounted on the plurality of guide rods 5 of the pair of supporting wall panels 1. Figure 1, except that the shaft hole 2211 of the primary gear 221 is used to connect the metering shaft 23, the shaft holes (not shown) of the other gears are respectively sleeved with a guide rod 5, the guide rod 5 is arranged parallel to the metering shaft 23, and the metering shaft 23 drives the box body 4 to move axially along the guide rod 5 when the axial movement is made. One of the guide rods 5 does not pass through any of the gears, but only passes through the box body 4 itself, to play a balancing and positioning role.

[0053] The metering shaft 23 is generally in the shape of a long strip, and includes a frequency selection portion 231 close to the transmission assembly 22, a measuring portion 232 close to the exposed end 234 of the metering shaft 23, and a stopper 233 separating the frequency selection portion 231 and the measuring portion 232. The connecting end of the frequency selection portion 231 of the metering shaft 23 opposite to the exposed end 234 of the metering shaft 23 is fixedly connected to the primary gear 221 through the shaft hole 2211.

[0054] The measuring mechanism 2 has a measuring state and a reset state. The measuring state is a working state in which the measuring shaft 23 is stretched after rotating in the measuring direction, and the reset state is a non-working state in which the measuring shaft 23 is not stretched. The measuring shaft 23 is fixedly connected to the transmission assembly 22 through the end of the frequency selection 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 measuring mechanism 2 is in the reset state, the frequency selection part 231 is located between the first supporting plate 11 and the second supporting plate 12, and the measuring part 232 is exposed outside the second supporting wall plate 12.

[0055] The frequency selection part 231 of the metering shaft 23 is provided with radially protruding ribs 2311, which can be integrally formed with the metering shaft 23 itself as an integral longitudinal component, and the cross section of the ribs 2311 can be square, arc-shaped or other cross-sectional shapes. In this embodiment, the ribs 2311 are a protruding rectangular strip structure. When the metering shaft 23 is in the reset state, the ribs 2311 do not contact the second support plate 12, so that the metering shaft 23 can rotate more freely.

[0056] On the edge of the clamping hole 121 of the second supporting wall plate 12, a plurality of clamping holes 1211 corresponding to the number of the phase shifting transmission mechanisms 3 are provided. Fig. 9 and Fig.12, the circumferential movement of the metering shaft 23 can cause the rib 2311 to be adapted to be locked with one of the bayonet holes 1211. In the measuring state of the selection mechanism 2, after the metering shaft 23 rotates to the direction corresponding to the phase-shifting transmission mechanism 3 to be measured, the metering shaft 23 is stretched to drive the detection member 31 to be placed in a circumferential position that can contact the movable part 31 of the phase-shifting transmission mechanism 3 through axial movement. At this time, the rib 2311 of the metering shaft is placed in the bayonet hole 121 corresponding to the bayonet hole 121. In this embodiment, the number of the bayonet holes 1211 is consistent with the number of the phase-shifting transmission mechanisms 3, which is four. When measuring the phase shift of different phase-shifting transmission mechanisms 3, the rib 2311 is placed in the corresponding bayonet hole 1211.

[0057] The main function of the rib 2311 is that when the measuring mechanism 2 is in the measuring state, the metering shaft 23 rotates to the direction of the target phase-shifting transmission mechanism 3 to be measured, and the metering shaft 23 has been stretched to start the measurement, the rib 2311 is placed in the corresponding bayonet 1211, which can limit the position of the metering shaft 23 and prevent it from being rotated, so that the measuring mechanism 2 will not cause measurement errors due to the accidental rotation of the metering shaft 23 in the normal working state. Therefore, in other embodiments, the number of the ribs 2311 can be one, two or four, and the position setting only needs to be placed in the bayonet 1211 in the measuring state to limit the metering shaft 23.

[0058] A scale 2321 is provided on the surface of the measuring part 232. In this embodiment, since the phase modulation measuring device has four phase shifting transmission mechanisms 3, in order to facilitate the operator to read the value on the scale 2321, four scales are correspondingly provided on the surface of the measuring part 232, so that when measuring the phase shift of different phase shifting transmission mechanisms 3, the scale value can be read intuitively.

[0059] An indicator 2341 is also provided at the exposed end 234 of the metering shaft 23. Fig.11 The indicator 2341 is an indicator mark, corresponding to the detector 21, and is used to indicate the circumferential position of the detector 21. When the metering shaft 23 is rotated, the indicator 2341 points to the mark of a preset phase shift transmission mechanism 3, and the phase shift value measured by the detector 21 in this direction is the phase shift value of the phase shift transmission mechanism controlling the corresponding antenna frequency band.

[0060] When the exposed length of the metering shaft 23 is the smallest, that is, when the selection and measurement mechanism 2 is in the reset state, the stopper 233 just contacts the periphery of the clamping hole 121 of the second supporting wall plate 12. The size of the stopper 233 is larger than the size of the frequency selection part 231 and the measurement part 232, and is coaxial with the frequency selection part 231 and the measurement part 232. The three can be integrally formed. In other embodiments, the stopper 233 can also be a block or a clamping structure.

[0061] The phase modulation measurement device further includes a bottom plate 6 for fixing the support plate 1, and a packaging wall plate 7 parallel to the support plate 1, and the packaging wall plate 7 is vertically connected to the bottom plate 6. The packaging wall plate 7 is provided with a through hole 71, and the measuring portion 232 of the metering shaft 23 passes through the through hole 71. The through hole 71 is surrounded by an indication layer 72 for providing readable information in accordance with the indication of the indicator 2341 of the metering shaft 23, and the indication layer 72 indicates the corresponding frequency band identification through words or symbols.

[0062] The packaging plate 7 generally shares the exposed packaging side plate inherent to the antenna, and the bottom plate 6 generally shares the reflector plate of the antenna.

[0063] The metering shaft 23 is provided with a return spring 8 on the measuring portion 232 between the stopper 233 and the packaging plate 7 . When the metering shaft 23 is in the return state, the return spring 8 is in a free state without being compressed.

[0064] The specific working principle of the phase modulation measurement device provided in this embodiment is as follows:

[0065] In different application scenarios, the phase shift of a single or multiple frequency bands of the antenna needs to be adjusted to meet the needs.

[0066] The control unit 321 of the phase shift transmission mechanism 3 is connected to an external drive control device or other external human control device to receive an external rotation torque, and the movable component 31 is directly or indirectly connected to the phase shift component of the antenna phase shifter to output a linear torque.

[0067] Combination Figures 1 to 12The phase shift of a certain frequency band of the antenna is controlled by the phase shift transmission mechanism 3. When the signal of the frequency band needs to be phase shifted, the external control device (not shown) rotates the screw 32 by driving the control unit 321 of the phase shift transmission mechanism 3. The movable part 31 of the phase shift transmission mechanism 3 can make axial movement between the first support plate 11 and the second support plate 12 according to the different rotation directions of the screw 32. The movable part 31 controls the phase shift of the corresponding single frequency band in the multi-frequency antenna through displacement. When the phase shift amount of the signal of the frequency band is reached, the external control device stops driving the screw 32. At this time, the movable part 31 stops moving and stays at a certain position of the screw 32.

[0068] The displacement of the movable part 31 matches the antenna beam tilt angle. The antenna beam tilt angle is different, and the position where the movable part 31 stops on the measuring screw 32 is also different. After completing the phase shift of the frequency band signal, the phase shift of the antenna signal in a certain frequency band is measured by the phase adjustment measurement device provided by the present invention.

[0069] When the metering shaft 23 is in the reset state, at the exposed end 234 of the measuring part 232, the metering shaft 23 is turned toward the direction of the phase shift transmission mechanism 3 corresponding to the frequency band signal to be measured through the direction of the indicator 2341. Correspondingly, the metering shaft 23 drives the detection member 21 toward the direction of the phase shift transmission mechanism 3 to be measured through the transmission assembly 22.

[0070] Then, the metering shaft 23 is pulled outward at the exposed end 234 until the detection member 21 contacts the movable part 31, the detection member 21 is stuck, and the pulling of the metering shaft 23 stops. At this time, the rib 2311 is placed in the corresponding bayonet 1211 to prevent the metering shaft 23 from being accidentally rotated. At this time, the scale value of the ruler 2321 on the measuring part 232 of the metering shaft 23 is read at the position indicated by the indication layer 72 of the packaging wallboard 7, and the reference Fig.12 The scale value corresponds to the beam tilt angle of a certain frequency band of the antenna controlled by the measured phase-shift transmission mechanism.

[0071] After completing the measurement of the beam tilt angle of the antenna in this frequency band, the measuring shaft 23 is released, and the measuring shaft can be reset by the combined action of the spring 8 and the limiter 233 .

[0072] After the measuring shaft 23 is reset, the measuring shaft 23 is in a rotatable state, and the phase shift values ​​of other frequency bands can be measured.

[0073] As mentioned above, there is a corresponding relationship between the phase-shift transmission mechanism 3 and the number of the bayonet 1211. According to this principle, in other embodiments, the number of the phase-shift transmission mechanism 3 can be set to two, three or five, and a plurality of bayonet 1211 can be set accordingly, and the mutual avoidance relationship between the movable parts of the phase-shift transmission mechanism 3 can be properly handled. In other words, the number of the phase-shift transmission mechanism 3 of the present invention can be flexibly set by those skilled in the art according to the creative spirit of the present application, so as to more abundantly evolve many embodiments of the present invention.

[0074] The above embodiments illustrate various embodiments and working principles of a phase shift measurement device provided by the present invention. It can be seen that the structure is simple and the phase shift measurement of multiple frequency bands can be realized in the same phase shift measurement device.

[0075] In addition, the present invention also provides a multi-frequency antenna for radiating signals of multiple frequency bands and multiple phase shifting components arranged corresponding to each frequency band, each phase shifting component is used to receive external torque and perform phase shifting of the signal of the corresponding frequency band. The antenna also includes the above-mentioned phase adjustment measurement device, and the phase shifting transmission mechanism of the phase adjustment measurement device is connected one-to-one with the multiple phase shifting components so as to transmit the external torque to the corresponding phase shifting component through the phase shifting transmission mechanism to achieve phase shifting of the signal of the corresponding frequency band.

[0076] The above description is only a preferred embodiment of the present invention and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present invention is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the above features are replaced with the technical features with similar functions invented in the present invention (but not limited to) to form a technical solution.

Claims

1. A phase adjustment measurement device, comprising a pair of parallel supporting wall panels, a measurement mechanism and at least two phase shift transmission mechanisms installed on the pair of supporting wall panels, wherein the phase shift transmission mechanism controls the phase shift of a corresponding single frequency band in a multi-frequency antenna by performing axial movement through its movable parts, It is characterized in that The measuring mechanism includes a detection member, a transmission assembly and a measuring shaft: The transmission assembly is used to transmit the directional motion of the metering shaft to the detection member so that it moves in the same direction; The detection member is adapted to be opposite to a movable component of a corresponding phase-shift transmission mechanism at different circumferential positions so as to achieve mutual interference at axial positions close to each other; The metering shaft passes through a clamping hole of one of the supporting wall plates and is exposed to the outside. An indicator indicating its circumferential position is provided at its exposed end, and a scale indicating its exposed axial length is provided on its surface.

2. The phase modulation measurement device according to claim 1, Features: The transmission assembly includes a plurality of gears meshing in sequence, the connecting end of the metering shaft opposite to its exposed end is mounted on the primary gear of the transmission assembly, and the detection member is integrally formed or mounted on the final gear of the transmission assembly.

3. The phase modulation measurement device according to claim 2, Features: The gears of the transmission assembly are encapsulated in the same box body, and the box body is sleeved on multiple guide rods installed on the pair of supporting wall panels. Except for the axial hole of the primary gear used to connect the metering shaft, the axial holes of the remaining gears are respectively sleeved with one of the guide rods, and the axial movement of the metering shaft drives the axial movement of the box body.

4. The phase modulation measurement device according to claim 3, Features: One of the guide rods does not pass through any of the gears, but only passes through the box body itself.

5. The phase modulation measurement device according to claim 2, Features: A plurality of the phase-shifting transmission mechanisms are arranged around the circumference of the final gear, and the movable parts of each phase-shifting transmission mechanism are correspondingly distributed at different circumferential positions of the final gear, and have contact surfaces / slots that facilitate the detection by the detection member.

6. The phase modulation measurement device according to claim 5, Features: The phase-shifting transmission mechanism includes the movable component, the screw and the sliding rod. The sliding rod and the screw are supported on the pair of supporting wall panels at both ends, and one end of the screw forms a control part on the outside of the supporting wall panel for external force to drive the screw to rotate. The movable component is provided with an axial hole and a nut. The axial hole is sleeved on the sliding rod, and the nut is meshed with the screw to form a screw-nut mechanism.

7. The phase modulation measurement device according to any one of claims 1 to 6, Features: The metering shaft includes a frequency selection part close to the transmission assembly and a measuring part close to its exposed end, and a limiter separating the frequency selection part and the measuring part. When the exposed length of the metering shaft is the smallest, the limiter just contacts the periphery of the clamping hole of one of the supporting wall panels.

8. The phase modulation measurement device according to claim 7, Features: The frequency selection portion of the metering shaft is provided with radially protruding ribs, and the edge of the clamping hole of one of the supporting wall panels is provided with a plurality of clamping slots corresponding to the total amount of the phase shifting transmission mechanism. When the circumferential movement of the metering shaft causes the rib to be adapted to be clamped with one of the clamping slots, the detection member is placed at a circumferential position where it can contact a movable part of the phase shifting transmission mechanism through axial movement, and different clamping slots cause the detection member to be at a circumferential position corresponding to different movable parts.

9. The phase modulation measurement device according to claim 7, Features: On one side of the exposed end of the metering shaft, there is a packaging wall plate parallel to the supporting wall plate. The metering shaft passes through a through hole on the packaging wall plate. An indication layer is provided around the through hole to cooperate with the indication of the indicator of the metering shaft to provide readable information.

10. The phase modulation measurement device according to claim 9, Features: The packaging wall panel is an exposed packaging side panel inherent to the antenna.

11. The phase modulation measurement device according to claim 9, Features: The measuring shaft is provided with a return spring between its stopper and the packaging wallboard, and the measuring portion of the measuring shaft is sleeved with a return spring. When the exposed length of the measuring shaft is the smallest, the return spring is in a free state without pressure.

12. A multi-frequency antenna, used for radiating signals of multiple frequency bands and having multiple phase shifting components arranged corresponding to each frequency band, each phase shifting component being used for receiving an external torque to perform phase shifting of the signal of the corresponding frequency band, Features: The antenna also includes a phase adjustment measurement device as described in any one of claims 1 to 11, and a phase shift transmission mechanism of the phase adjustment measurement device is connected one-to-one with the multiple phase shift components so as to transmit the external torque to the corresponding phase shift component through the phase shift transmission mechanism to achieve phase shifting of the corresponding frequency band signal.

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