CN213184600U

CN213184600U - Compact range multi-feed source automatic switching device

Info

Publication number: CN213184600U
Application number: CN202021544565.3U
Authority: CN
Inventors: 陈宇钦; 彭芳云; 张佳莺
Original assignee: Suzhou Yipu Electromagnetic Technology Co ltd
Current assignee: Suzhou Yipu Electromagnetic Technology Co ltd
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2021-05-11
Anticipated expiration: 2030-07-30

Abstract

The utility model discloses a many feeds of compact range automatic switching control equipment, including support, many feed positioner, switching drive arrangement and a plurality of feed, the installation that many feed positioner can move on the support, at least one feed along many feed positioner's motion path interval arrangement's fixed mounting on many feed positioner, arbitrary one can arrive the focal position of compact range plane along with many feed positioner in each feed, switches over drive arrangement drive many feed positioner and follows appointed route motion, the utility model discloses simple structure, convenient operation, design benefit can realize carrying out the position switching fast between the different feeds, reaches the focus position that different feeds arrived the plane of reflection and carries out the demand of work for the availability factor of test field obtains great improvement.

Description

Compact range multi-feed source automatic switching device

Technical Field

The utility model relates to a compact range system, in particular to many feed automatic switching control equipment of compact range.

Background

Antenna characteristics are typically measured in the far field; with the advent of the 5G era, the distance of far-field conditions of large-sized tested pieces (such as base station antennas) becomes very long with the increase of frequency, which means that the required size of a microwave anechoic chamber becomes large and the cost is increased, so that the performance of a dead zone in the anechoic chamber can be ensured, and the realization of the far-field conditions in the microwave anechoic chamber becomes difficult. And the path loss becomes larger with the increase of the far-field distance, so that the reduction of the testing precision is also a problem which cannot be ignored. The 2 problems mentioned above are partially solved by the advent of compact fields.

The compact range system converts spherical waves generated by the feed source into plane waves in a short distance so as to obtain excellent darkroom dead zone performance and realize far-field test of the passive/active antenna in a limited physical space; therefore, the method is an ideal scheme for 5G communication and vehicle-mounted radar product antenna measurement; compact field systems allow testing of different types of antennas, such as active antenna systems, array antennas, high directivity antennas, particularly for high frequency millimeter wave antennas. The method can test the wave beam forming directional diagram of the 5G base station antenna, and radio frequency radiation indexes such as EIRP, EVM, occupied bandwidth, ACLR (Adjacent Channel Leakage Power ratio), EIS (interference Channel selection), ACS (Adjacent Channel selection) and the like. The compact range system mainly comprises a reflecting surface, a feed source, a rotary table, a radio frequency link and an antenna darkroom, wherein the size of the reflecting surface, the size of the matched feed source, the size of the radio frequency link and the size of the darkroom determine the performance of the system. In particular, the performance of the feed source is related to compact range performance, and the requirement on the feed source is generally higher.

The compact field feed source is required to be uniformly irradiated on the reflecting surface as much as possible, the irradiation power is reduced as much as possible in the edge area of the reflecting surface so as to obtain the optimal tapered caliber distribution, the phase center position of the feed source is required to be not changed along with the frequency, the feed source has lower side lobes, the cross polarization is lower, and the amplitude-phase characteristic of a radiation field has good axial symmetry. Therefore, the frequency range of the feed source is not particularly wide, and a plurality of feed sources are required to meet the requirement of high performance.

Ripple horns are commonly used as the feed source of the reflector antenna, which can produce low non-cross polarization, have a radiation pattern with symmetrical wave beams, and can further improve the bandwidth, and the high-performance compact field needs to use the ripple horn antenna, and we use the ripple horn with single polarization or dual polarization. A plurality of different feeds are provided for different uses and frequency bands. The switching of different feed sources determines the use efficiency of the test field. In the traditional method, single feed sources are switched one by one, so that the problem of low efficiency exists.

In view of the above, there is a need for an improved feeding source device to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model provides a many feed automatic switching control equipment of compact range, this many feed automatic switching control equipment of compact range can realize the quick switch over position of a plurality of feeds in the test system of compact range, has improved the availability factor of test field.

The utility model discloses a solve the technical scheme that its technical problem adopted and be: the utility model provides a compact range many feed source automatic switching control equipment, includes support, many feed source positioner, switches drive arrangement and a plurality of feed source, the installation that many feed source positioner can move on the support, the fixed mounting that at least one feed source arranged along many feed source positioner's motion path interval is on many feed source positioner, arbitrary one can arrive the focus position of compact range plane along with many feed source positioner in each feed source, switches drive arrangement drive many feed source positioner and follows appointed route motion.

As a further improvement, the multi-feed positioning device is a turntable, the turntable can be rotatably installed on the support, at least one feed is installed on one side of the turntable towards the compact range reflecting surface along the fixed mounting of the circular path interval, and the switching drive device drives the turntable to rotate.

As a further improvement, the utility model is also provided with a baffle, the fixed mounting that the baffle can be dismantled is on many feed source positioner, and the baffle can be selective cover the feed that does not need work.

As a further improvement, the baffle is pasted with wave-absorbing material to form the lid column structure that matches with the appearance of the multi-feed source positioning device, be equipped with the fretwork portion that the feed that supplies to need work exposes on the baffle.

As the utility model discloses a further improvement still is equipped with feed installation revolving stage and feed rotary drive device, the fixed mounting that the feed can be dismantled is on feed installation revolving stage, and feed installation revolving stage can wind feed axis pivoted installation on it on many feed positioner, and feed rotary drive device drive feed installation revolving stage is rotatory.

As a further improvement, the support includes base, altitude mixture control piece, front and back regulating block, altitude mixture control mechanism and front and back adjustment mechanism, the altitude mixture control piece can follow installing on the base of vertical lift, and altitude mixture control mechanism drive altitude mixture control piece elevating movement carries out the locking location to it, and front and back regulating block can be towards installing on the altitude mixture control piece of the interior plane of reflection direction motion in compact range, and front and back adjustment mechanism can drive front and back regulating block rectilinear sliding and fix a position to its locking.

As a further improvement, be equipped with linear guide on the altitude mixture control piece, linear guide is located to the cover that the front and back regulating block can slide, front and back adjustment mechanism includes screw-nut mechanism and hand wheel, and the lead screw axial locking and the circumferencial direction of screw-nut mechanism can the pivoted install on the altitude mixture control piece, and the nut and the front and back regulating block of screw-nut mechanism link firmly, and the hand wheel links firmly with the lead screw is coaxial.

As a further improvement, altitude mixture control mechanism includes screw rod, nut cover and setting element, the screw rod can be followed endwise slip and set for the distance and along installing on the base of circumferencial direction locking, the nut cover is followed the axial locking and can be rotated along the circumferencial direction and install on the base, nut cover is established with screw rod activity spiro union cover, the setting element can be to nut cover and base fixed location, screw rod upper end and altitude mixture control piece fixed connection.

As a further improvement, the nut sleeve side wall is further provided with a handle extending along the radial direction of the nut sleeve, the base is fixedly provided with two stoppers at intervals, the handle on the nut sleeve side wall is just inserted between the two stoppers, and the handle on the nut sleeve side wall can swing in the gap between the two stoppers to set the angle.

As a further improvement, the utility model discloses a still be equipped with the base, be equipped with on the base along the first rectangular hole that extends towards compact range plane of reflection direction, this first rectangular downthehole gliding the inserting be equipped with be used for being fixed in the base the installed part on the compact range bottom surface, still be equipped with the direction slide of perpendicular first rectangular hole extending direction on the base, the base can be followed in the gliding direction slide of locating of direction slide extending direction, be equipped with the second rectangular hole that extends along direction slide extending direction on the base, the rectangular downthehole gliding the inserting of second is located and is equipped with the connecting piece that is used for base and base fixed positioning, still fix on the base and be equipped with two dogs, two dogs backstop respectively in the base along its slip direction both sides wall.

The utility model has the advantages that: the utility model discloses an install a plurality of feed source spaced on many feed source positioner, move on predetermineeing the route through switching drive arrangement drive many feed source positioner, the focus position that realizes different feed sources arrival plane of reflection and carries out work, different feed sources are installed repeatedly on the support and are dismantled and change when having avoided the test to require to change, the baffle more made through filter material shelters from the feed source that does not need work, misdetection and signal interference have been avoided, the three-dimensional regulation structure that more passes through the support has realized the regulation of feed source optional position in three-dimensional space, has ensured the work feed source on the focus of plane of reflection, the utility model discloses simple structure, convenient operation, design benefit can realize fast switch over position between the different feed sources for the availability factor in test field obtains great improvement.

Drawings

Fig. 1 is a first perspective view of the present invention;

fig. 2 is a second perspective view of the present invention;

fig. 3 is a perspective view of the utility model in use.

Detailed Description

Example (b): the utility model provides a take up a lot of automatic auto-change over device of feed, includes support, many feed positioner, switches drive arrangement 1 and a plurality of feed, the installation that many feed positioner can move on the support, the fixed mounting that at least one feed was arranged along many feed positioner's motion path interval is on many feed positioner, arbitrary one can arrive the focus position of taking up a lot of plane of reflection along many feed positioner in each feed, switches drive arrangement 1 drive many feed positioner and follows appointed route motion. When carrying out the antenna test in the compact field, with the feed difference fixed mounting of a plurality of differences on many feed positioner, according to the motion of setting for the route of many feed positioner of test demand drive on the support, make the focus position that different feeds are in the plane of reflection test, this auto-change over device can be according to the different test requirements of usage and frequency channel, realize the fast switch-over between the different feeds, different feeds are installed repeatedly on the support and are dismantled when having avoided the test to require to change and change, the availability factor of test field obtains great improvement.

The multi-feed-source positioning device is a rotary table 2, the rotary table 2 can be rotatably arranged on a support, at least one feed source is fixedly arranged on one side, facing the compact range reflecting surface, of the rotary table 2 at intervals along a circular path, and a switching driving device 1 drives the rotary table 2 to rotate. Rotate on the support through carousel 2, realize that different feed source switch to the focus position of plane of reflection and test, this kind of switching mode is simple, occupation space is little, switching drive arrangement 1 is best servo motor, except adopting the rotatory mode of carousel 2 to realize the feed source position switch, switching drive arrangement 1 can also be the mode of straight line slip and install on the support, it is in plane of reflection focus position to change different feed sources through straight line sliding distance, also or through wobbling mode etc., this is the equivalence replacement structure that technical staff in the art thought very easily according to this patent, belong to this patent protection scope.

The feed source positioning device is further provided with a baffle 22, wherein the baffle 22 can be detachably and fixedly arranged on the multi-feed source positioning device, and the baffle 22 can selectively cover feed sources which do not need to work. The feed source which does not need to be tested is shielded and covered by the baffle plate 22, so that misdetection and interference are avoided.

The baffle 22 is pasted with wave-absorbing materials, a cover-shaped structure matched with the appearance of the multi-feed-source positioning device is formed, and a hollow part for exposing a feed source needing to work is arranged on the baffle 22. Wave absorbing materials are pasted on the baffle 22, so that the influence of an inoperative feed source on a test system is avoided.

The feed source rotary table is further provided with a feed source installation rotary table 4 and a feed source rotary driving device 5, the feed source can be detachably and fixedly installed on the feed source installation rotary table 4, the feed source installation rotary table 4 can be installed on the multi-feed source positioning device in a rotating mode around the axis of the feed source on the feed source installation rotary table, and the feed source rotary driving device 5 drives the feed source installation rotary table 4 to rotate. Through the rotatory feed source rotation that drives of feed source installation revolving stage 4, and then realize that single polarization feed source 3 rotates, form the double polarization, double polarization feed source 6 then direct fixed mounting on many feed source positioner can, need not to adopt feed source installation revolving stage 4, when the feed source is installed on many feed source positioner, can set up on many feed source positioner and dodge the breach, feed source installation revolving stage 4 and the double polarization feed source for installing single polarization feed source can direct mount on carousel 2, and correspond with dodging the breach, feed source installation revolving stage 4's pivot is stretched out and is installed the feed source rotary driving device 5 at many feed source positioner back through dodging the breach and be connected.

The support includes base 7, altitude mixture control piece 8, front and back regulating block 9, altitude mixture control mechanism and front and back regulating mechanism, the installation that vertical lift can be followed to altitude mixture control piece 8 on base 7, and the 8 elevating movement of altitude mixture control mechanism drive altitude mixture control piece carries out the locking location to it, and the installation that front and back regulating block 9 can move towards compact field internal reflection face direction is on altitude mixture control piece 8, and front and back regulating mechanism can drive front and back regulating block 9 rectilinear sliding and fix a position to its locking. The height and the front and back positions of the multi-feed-source positioning device can be adjusted through the height adjusting mechanism and the front and back adjusting mechanism, so that the feed source on the multi-feed-source positioning device is positioned on the focal position of the reflecting surface, and focusing is realized.

The height adjusting mechanism is characterized in that a linear guide rail 10 is arranged on the height adjusting block 8, the front and rear adjusting blocks 9 can be sleeved on the linear guide rail 10 in a sliding mode, the front and rear adjusting mechanism comprises a screw rod nut mechanism 11 and a hand wheel 12, the screw rod of the screw rod nut mechanism 11 is axially locked, the circumferential direction of the screw rod can be rotatably installed on the height adjusting block 8, a nut of the screw rod nut mechanism 11 is fixedly connected with the front and rear adjusting blocks 9, and the hand wheel 12 is fixedly connected with the screw rod in a. The front and back movement of the front and back adjusting block 9 can be realized by rotating a hand wheel 12, the linear guide rail 10 is preferably an inclined linear guide rail 10 which is right opposite to the reflecting surface, so that the feed source at the working position can be kept to slide on a line which is perpendicular to the reflecting surface and is over-focused, the focusing is convenient, and the front and back adjusting mechanism can also be of other structures such as a push-pull slide block structure besides adopting the hand wheel 12 and a lead screw nut mechanism 11.

The height adjusting mechanism comprises a screw rod 14, a nut sleeve 13 and a positioning piece, the screw rod 14 can slide along the axial direction to set a distance and can be installed on the base 7 along the circumferential direction, the nut sleeve 13 can be installed on the base 7 along the axial direction and can rotate along the circumferential direction, the nut sleeve 13 is sleeved with the screw rod 14 in a movable threaded mode, the positioning piece can fix and position the nut sleeve 13 and the base 7, and the upper end of the screw rod 14 is fixedly connected with the height adjusting block 8. Realize 14 axial lifts of screw rod through rotating nut cover 13, and then realize the altitude mixture control of feed, it can with nut cover 13 and base 7 fixed by the setting element after the regulation, the setting element can be the bolt, can set up a plurality of arc hole 15 on the nut cover 13, the bolt pass the arc hole be connected with base 7 can, realize the location to nut cover 13 through loosening the bolt and screwing the bolt, nut cover 13 location back, screw rod 14 is fixed a position promptly, the structure is simple, design benefit, the feed that has avoided following the commentaries on classics to lead to breaks away from the focus position.

The side wall of the nut sleeve 13 is also provided with a handle 16 extending along the radial direction of the nut sleeve, the base 7 is fixedly provided with two limit blocks 17 at intervals, the handle 16 on the side wall of the nut sleeve 13 is just inserted between the two limit blocks 17, and the handle 16 on the side wall of the nut sleeve 13 can swing for a set angle in a gap between the two limit blocks 17. The nut sleeve 13 can be driven to rotate by pulling the handle 16, the operation is convenient, the labor is saved, the pulling range of the handle 16 is limited by the limiting block 17, the lifting height of the multi-feed-source positioning device is further limited, and the height of the multi-feed-source positioning device can be adjusted within a certain range.

Still be equipped with base 18, be equipped with on base 18 along the first rectangular hole 19 that extends towards the compact range plane of reflection direction, can gliding insert in this first rectangular hole 19 and be equipped with and be used for being fixed in the installed part on the compact range bottom surface with base 18, still be equipped with the direction slide of perpendicular first rectangular hole 19 extending direction on base 18, base 7 can be followed the gliding direction of direction slide of locating in the direction slide, be equipped with the second rectangular hole 20 that extends along the direction slide extending direction on base 7, can gliding insert in the second rectangular hole 20 and locate to be used for base 7 and base 18 fixed positioning's connecting piece, still fixed two dogs 21 that are equipped with on base 18, two dogs 21 stop respectively in base 7 along its slip direction both sides wall. The base 18 is used for realizing the adjustment of the base 7 in the transverse direction, so that the adjustment of the multi-feed-source positioning device in any direction in a three-dimensional space is realized, the adjustment and the guiding of the base 7 are also realized by the guide slide way on the base 18, and the limit of the adjustment distance of the base 7 is realized by the stop block 21.

Claims

1. The utility model provides a many feed source automatic switching control equipment in compact range which characterized in that: the device comprises a support, a multi-feed-source positioning device, a switching driving device (1) and a plurality of feed sources, wherein the multi-feed-source positioning device can be movably arranged on the support, at least one feed source is fixedly arranged on the multi-feed-source positioning device at intervals along the movement path of the multi-feed-source positioning device, any one of the feed sources can reach the focal position of a compact range reflecting surface along with the multi-feed-source positioning device, and the switching driving device drives the multi-feed-source positioning device to move along an appointed path.

2. The compact range multi-feed automatic switching device of claim 1, wherein: the multi-feed-source positioning device is a rotary table (2), the rotary table can be rotatably arranged on the support, at least one feed source is fixedly arranged on one side, facing the compact range reflecting surface, of the rotary table at intervals along a circular path, and the switching driving device drives the rotary table to rotate.

3. The compact range multi-feed automatic switching device of claim 1, wherein: still be equipped with baffle (22), fixed mounting that the baffle can be dismantled is on many feed locating device, and the feed that the baffle can be selective covers does not need work.

4. The compact range multi-feed automatic switching device of claim 3, wherein: the baffle is pasted with wave-absorbing materials, a cover-shaped structure matched with the appearance of the multi-feed-source positioning device is formed, and a hollow part for exposing a feed source needing to work is arranged on the baffle.

5. The compact range multi-feed automatic switching device of claim 1, wherein: the feed source rotary driving device is characterized by further comprising a feed source installation rotary table (4) and a feed source rotary driving device (5), the feed source can be detachably fixedly installed on the feed source installation rotary table, the feed source installation rotary table can be installed on the multi-feed-source positioning device in a rotating mode around the axis of the feed source on the feed source installation rotary table, and the feed source rotary driving device drives the feed source installation rotary table to rotate.

6. The compact range multi-feed automatic switching device of claim 1, wherein: the support includes base (7), altitude mixture control piece (8), front and back regulating block (9), height adjusting mechanism and front and back regulating mechanism, the installing on the base of vertical lift can be followed to the altitude mixture control piece, and height adjusting mechanism drive altitude mixture control piece elevating movement carries out the locking location to it, and front and back regulating block can be towards installing on the altitude mixture control piece of the internal reflection face direction motion in compact field, and front and back regulating mechanism can drive front and back regulating block rectilinear sliding and fix a position to its locking.

7. The compact range multi-feed automatic switching device of claim 6, wherein: the height adjusting mechanism is characterized in that a linear guide rail (10) is arranged on the height adjusting block, the front adjusting block and the rear adjusting block can be sleeved on the linear guide rail in a sliding mode, the front adjusting mechanism and the rear adjusting mechanism comprise a screw rod nut mechanism (11) and a hand wheel (12), the screw rod of the screw rod nut mechanism is axially locked, the circumferential direction of the screw rod nut mechanism can be rotatably installed on the height adjusting block, a nut of the screw rod nut mechanism is fixedly connected with the front adjusting block and the rear adjusting block, and.

8. The compact range multi-feed automatic switching device of claim 6, wherein: the height adjusting mechanism comprises a screw rod (14), a nut sleeve (13) and a positioning piece, the screw rod can be installed on the base along the axial sliding setting distance and along the circumferential direction locking, the nut sleeve is installed on the base along the axial locking and along the circumferential direction rotating, the nut sleeve is sleeved with the screw rod in a movable threaded mode, the positioning piece can fix and position the nut sleeve and the base, and the upper end of the screw rod is fixedly connected with the height adjusting block.

9. The compact range multi-feed automatic switching device of claim 8, wherein: the side wall of the nut sleeve is also provided with a handle (16) extending along the radial direction of the nut sleeve, the base is fixedly provided with two limiting blocks (17) at intervals, the handle on the side wall of the nut sleeve is just inserted between the two limiting blocks, and the handle on the side wall of the nut sleeve can swing for a set angle in a gap between the two limiting blocks.

10. The compact range multi-feed automatic switching device of claim 8, wherein: still be equipped with base (18), be equipped with on the base along first rectangular hole (19) that extend towards the compact range plane of reflection direction, this first rectangular downthehole gliding the inserting be equipped with be used for being fixed in the base the installed part on the compact range bottom surface, still be equipped with perpendicular first rectangular hole extending direction's direction slide on the base, the base can be followed the gliding direction slide of direction slide extending and locate in the direction slide, be equipped with on the base along the second rectangular hole (20) that the direction slide extending, the rectangular downthehole gliding the inserting of second is located and is equipped with the connecting piece that is used for base and base fixed positioning, still fixed two dogs (21) that are equipped with on the base, two dogs backstop respectively in base along its slip direction both sides wall.