Radio frequency radiation stray test device

Abstract

The utility model belongs to the technical field of laboratory detection, and provides a radio frequency radiation stray test device, which comprises an antenna tower; the lifting device is arranged on the antenna tower and can ascend or descend in the height direction of the antenna tower; the mounting frame is arranged on the lifting device; the filter is arranged on the mounting frame; the amplifier is arranged on the mounting frame, and the amplifier is connected with the filter through a signal line. The lifting device can flexibly ascend or descend along the height direction of the antenna tower, so that testers are allowed to adjust the height positions of the amplifier and the filter mounted on the lifting device according to requirements, the amplifier and the filter are close to a receiving antenna as far as possible, meanwhile, the distance between the amplifier and the filter is shortened, and the test efficiency is improved. Useless signals amplified by the amplifier are reduced, so that the purpose of reducing test noise can be achieved, and test data are more accurate.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the laboratory detection technical field, concretely relates to radio frequency radiation stray test device. BACKGROUND

[0002] Radiation stray refers to when mobile station is connected with non-radiation pure resistance load or in receiver state, the emission on the operating frequency band that is generated or amplified by mobile station through mobile station shell, power supply, control equipment, audio cable.

[0003] In the related art, when the laboratory carries out radio frequency radiation stray test, the test data is inaccurate due to the excessively high background noise, thereby leading to the inaccurate test data of the same product between the laboratories. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides a radio frequency radiation stray test device to solve the problem of inaccurate test data caused by excessively high background noise in the prior art.

[0005] In a first aspect, the utility model provides a radio frequency radiation stray test device, which comprises an antenna tower, a lifting device arranged on the antenna tower, the lifting device being capable of ascending or descending along the height direction of the antenna tower, a mounting rack arranged on the lifting device, a filter arranged on the mounting rack, and an amplifier arranged on the mounting rack and connected with the filter through a signal line.

[0006] In an optional embodiment, the mounting rack comprises a mounting plate connected with the lifting device, a first layer frame connected with the mounting plate and provided with a first hole for the signal line to pass through, and a second layer frame connected with the first layer frame, the second layer frame being arranged side by side with and spaced apart from the first layer frame and provided with a second hole for the signal line to pass through.

[0007] In an optional embodiment, the first layer frame and the second layer frame each comprise a bottom plate and a surrounding side plate arranged annularly at the edge of the bottom plate to enclose a mounting space for mounting the filter or the amplifier, wherein the bottom plate and the surrounding side plate are each provided with a plurality of first holes or second holes.

[0008] In an optional embodiment, the lifting device comprises a sliding block connected with the mounting rack, a sliding rail arranged on the sliding block and slidingly fitted with a tower pole of the antenna tower, and a driving mechanism connected with the sliding block and adapted to drive the sliding block to ascend or descend.

[0009] In an alternative embodiment, the sliding block is in a cylindrical structure, the tower pole of the antenna tower penetrates through the sliding block, and the sliding rails are arranged on the inner side of the sliding block.

[0010] In an alternative embodiment, the sliding block is in a rectangular shape, and the opposite sides of the sliding block are respectively provided with sliding rails.

[0011] In an alternative embodiment, the sliding rails comprise pulleys, and the opposite sides of the sliding block are respectively provided with at least one pulley in the height direction.

[0012] In an alternative embodiment, the radio frequency radiation spurious test device further comprises a detection circuit board having a signal input end and a signal output end, the signal input end is connected with the amplifier through a line, a preamplifier is connected with the signal output end through a line, a test receiver is connected with the preamplifier through a line, a turntable and an antenna mast center are connected with the test receiver through a line, an optional signal generator during system calibration is connected with the turntable and the antenna mast center through a line, an exchange and filter control center is connected with the optional signal generator during system calibration through a line, and a calculation center is connected with the exchange and filter control center through a line, and the calculation center is suitable for processing the collected signals.

[0013] In an alternative embodiment, the detection circuit is provided with a dynamic switch.

[0014] The radio frequency radiation spurious test device has the following beneficial effects.

[0015] The lifting device can be flexibly lifted or lowered along the height direction of the antenna tower, so that the height position of the amplifier and the filter installed on the lifting device can be adjusted according to the needs of the tester, the amplifier and the filter are as close to the receiving antenna as possible, the distance between the amplifier and the filter is shortened, the useless signals amplified by the amplifier are reduced, the purpose of reducing the test noise is achieved, and the test data is more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0017] Fig. 1 It is a perspective structural schematic view of the radio frequency radiation spurious test device of an embodiment of the present application.

[0018] Fig. 2 It is the stereogrammatic structure schematic view of mounting frame of radio frequency radiation stray test device of one embodiment of the utility model;

[0019] Fig. 3 It is the structure schematic view of radio frequency radiation stray test device of another embodiment of the utility model.

[0020] Explanation of reference signs:

[0021] 110, antenna tower; 120, mounting frame; 121, mounting plate; 122, first layer frame; 123, second layer frame; 130, filter; 140, amplifier; 151, sliding block; 152, sliding rail; 210, detection circuit board; 220, preamplifier; 230, test receiver; 240, center of turntable and antenna mast; 250, optional signal generator during system calibration; 260, exchange and filter control center; 270, calculation center. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without making creative efforts fall within the protection scope of the utility model.

[0023] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0025] In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as there is no conflict.

[0026] The embodiments of the utility model are described below in combination with Figs. 1 to 3

[0027] As Fig. 1 and Fig. 2 shown, according to the embodiments of the utility model, a radio frequency radiation spurious test device is provided, comprising: an antenna tower 110; a lifting device arranged on the antenna tower 110, the lifting device can ascend or descend along the height direction of the antenna tower 110; a mounting bracket 120 arranged on the lifting device; a filter 130 arranged on the mounting bracket 120; an amplifier 140 arranged on the mounting bracket 120, the amplifier 140 is connected with the filter 130 through a signal line.

[0028] In this embodiment, the radio frequency radiation spurious test device comprises an antenna tower 110, a lifting device, a mounting bracket 120, a filter 130 and an amplifier 140. The antenna tower 110 is arranged in a test chamber, and a lifting device is installed on the antenna tower 110, which can flexibly ascend or descend along the height direction of the antenna tower 110, thereby allowing the tester to adjust the height position of the amplifier 140 and the filter 130 installed on the lifting device as needed, as close as possible to the receiving antenna, and at the same time, the distance between the amplifier 140 and the filter 130 is shortened, the useless signal amplified by the amplifier 140 is reduced, thereby the purpose of reducing the test noise can be achieved, and the test data is more accurate. Without sacrificing the efficiency of laboratory testing, the accuracy of test data is improved, the radiation component of the product in free space can be truly fed back, and the uncertainty of the test system can be fully evaluated to reduce the difference between laboratories.

[0029] The implementation of the device can unify the components of the uncertainty of the test system to reduce the difference between the test data of laboratories caused by the size of the uncertainty evaluation value.

[0030] Among them, the filter 130 filters unnecessary signal interference to ensure the purity of the test results, and the amplifier 140 can enhance the weak signal received from the antenna for more accurate analysis. The amplifier 140 and the filter 130 are tightly connected through a signal line to ensure efficient and stable signal transmission.

[0031] ​Further, the mounting rack 120 comprises a mounting plate 121 connected with the lifting device, a first layer rack 122 connected with the mounting plate 121, and provided with a first hole for the signal line to pass through, and a second layer rack 123 connected with the first layer rack 122, the second layer rack 123 is arranged side by side and spaced apart from the first layer rack 122, and the second layer rack 123 is provided with a second hole for the signal line to pass through.

[0032] In this embodiment, the mounting rack 120 comprises the mounting plate 121, the first layer rack 122 and the second layer rack 123, and the mounting plate 121 is used to connect with the lifting device. The first layer rack 122 is directly connected with the mounting plate 121, and is designed with special holes in structure to facilitate the signal line to pass through smoothly. The second layer rack 123 is connected with the first layer rack 122, and the two layer racks are arranged side by side and kept a certain interval to ensure the smooth passing of the signal line. The second layer rack 123 is also designed with holes, which are also provided for the signal line to pass through. The design of the whole mounting rack 120 takes into account the layout and space requirement of the signal line, so that the signal line can pass through each level in order, while the stability of the structure and the convenience of installation are maintained.

[0033] Further, the first layer rack 122 and the second layer rack 123 each comprise a bottom plate, and a surrounding side plate arranged annularly at the edge of the bottom plate to enclose an installation space for installing the filter 130 or the amplifier 140, wherein the bottom plate and the surrounding side plate are each provided with a plurality of first holes 102 or second holes 102.

[0034] In this embodiment, the first layer rack 122 and the second layer rack 123 are arranged in sequence from top to bottom in the height direction. Each layer rack comprises a bottom plate, which is the basic part of the whole rack body and can provide stable support for other components. In addition, each layer rack is also equipped with surrounding side plates, which are annularly arranged around the edge of the bottom plate, and they collectively enclose an installation space, the filter 130 is installed in the installation space of the first layer rack 122, and the amplifier 140 is installed in the installation space of the second layer rack 123. The signal line is passed through the first holes 101 and the second holes 102, so that the signal line can be fixed and avoid being scattered, further improving the accuracy of the test data.

[0035] Further, the lifting device comprises a sliding block 151 connected with the mounting rack 120, a sliding rail 152 arranged on the sliding block, the sliding rail 152 is in sliding cooperation with the tower pole of the antenna tower 110, and a driving mechanism connected with the sliding block 151, the driving mechanism is suitable for driving the sliding block 151 to ascend or descend.

[0036] The lifting device comprises a sliding block 151, a sliding rail 152 and a driving mechanism, the sliding block 151 is firmly connected with the mounting frame 120; the sliding rail 152 is arranged on the sliding block 151 so as to smoothly slide with the tower pole of the antenna tower 110. The driving mechanism is connected with the sliding block 151, and provides power so that the sliding block 151 can be lifted or lowered as required, thereby realizing the vertical movement function of the lifting device.

[0037] Further, the tower pole of the antenna tower 110 penetrates the sliding block 151, and the sliding rail 152 is arranged on the inner side of the sliding block 151.

[0038] The tower pole of the antenna tower 110 penetrates the sliding block 151, and the sliding rail 152 is arranged on the inner side of the sliding block 151, which makes the antenna tower 110 more stable and smooth during height adjustment.

[0039] Further, the sliding block is rectangular, and the opposite sides in the sliding block are respectively provided with the sliding rails, and the tower pole of the antenna tower 110 is a rectangular pole.

[0040] The sliding block is a rectangular cylinder, which is sleeved outside the tower pole, and the tower pole of the antenna tower 110 is also designed as a rectangular pole structure, which not only ensures the stability of the structure, but also facilitates installation and maintenance. The internal structure of the sliding block comprises opposite sides, and the two sliding rails are oppositely arranged and can smoothly move on the rails,

[0041] Specifically, the sliding rail comprises a pulley, and the opposite sides in the sliding block are respectively provided with at least one pulley in the height direction.

[0042] The opposite sides in the sliding block are respectively provided with at least one pulley in the height direction, so as to ensure the smooth operation and stability of the sliding block.

[0043] Further, as shown in the figure, Fig. 3 The radio frequency radiation spurious test device further comprises: a detection circuit board 210 having a signal input end and a signal output end, the signal input end being connected with the amplifier 140 through a line; a preamplifier 220 connected with the signal output end through a line; a test receiver 230 connected with the preamplifier 220 through a line; a turntable and antenna mast center 240 connected with the test receiver 230 through a line; an optional signal generator 250 during system calibration connected with the turntable and antenna mast center 240 through a line; a switching and filter control center 260 connected with the optional signal generator 250 during system calibration through a line; and a calculation center 270 connected with the switching and filter control center 260 through a line, and the calculation center 270 is suitable for processing the collected signals.

[0044] The detection circuit board 210 is provided with a signal input end and a signal output end. The signal input end can receive signals from the outside and is connected to the amplifier 140 through a circuit to perform preliminary amplification processing on the signals. The role of the amplifier 140 is to enhance the strength of the signals and ensure that the signals will not be affected by attenuation during transmission, thereby affecting the accuracy of the test results. The preamplifier 220 is the next link in the signal processing chain and is connected to the signal output end of the detection circuit board 210 through a circuit. The main function of the preamplifier 220 is to further enhance the strength of the signals and prepare for subsequent signal processing. The test receiver 230 receives the amplified signals and performs further analysis and processing. The turntable and antenna mast center 240 is responsible for signal transmission and reception in the radio frequency radiation scattering test device. The optional signal generator 250 is connected to the turntable and antenna mast center 240 through a circuit and is used to generate standard signals to calibrate and adjust the entire test system. The exchange and filter control center 260 is a component responsible for signal exchange and filtering and is connected to the optional signal generator 250 during system calibration to ensure that the signals can be processed according to the predetermined path and manner during transmission. The computing center 270 is the processing core of the entire test device and is connected to the exchange and filter control center through a circuit. The computing center 270 is suitable for comprehensive processing of signals collected from various components through a software processing algorithm, analysis of test results, and provision of accurate data support.

[0045] Further, the detection circuit is provided with an automatic switch, which can reduce the manual switching steps.

[0046] Obviously, the above embodiments are only examples for the purpose of clarity and are not limitations on the embodiments.

[0047] Other different forms of changes or variations can be made on the basis of the above description for those of ordinary skill in the art. Here, it is not necessary or possible to exhaust all embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A radio frequency radiation spurious emission testing device, characterized in that, include: Antenna tower; A lifting device is installed on the antenna tower, and the lifting device can rise or fall along the height direction of the antenna tower; The mounting bracket is provided on the lifting device; The filter is mounted on the mounting bracket; An amplifier is mounted on the mounting bracket, and the amplifier is connected to the filter via a signal line.

2. The radio frequency radiation spurious emission testing device according to claim 1, characterized in that, The mounting bracket includes: Mounting plate, connected to the lifting device; The first layer of the frame is connected to the mounting plate and has a first hole for the signal line to pass through; The second shelf is connected to the first shelf. The second shelf and the first shelf are arranged side by side and spaced apart from each other. The second shelf is provided with a second hole for the signal line to pass through.

3. The radio frequency radiation spurious emission testing device according to claim 2, characterized in that, Both the first shelf and the second shelf include: Base plate; A side panel is circumferentially disposed at the edge of the base plate, enclosing an installation space for mounting the filter or the amplifier; The bottom plate and the side plate are each provided with a plurality of the first hole or the second hole.

4. The radio frequency radiated spurious emission testing apparatus according to any one of claims 1 to 3, characterized in that, The lifting device includes: The slider is connected to the mounting bracket; A slide rail is provided on the slider, and the slide rail is slidably engaged with the tower mast of the antenna tower; A drive mechanism is connected to the slider, and the drive mechanism is adapted to drive the slider to rise or fall.

5. The radio frequency radiation spurious emission testing device according to claim 4, characterized in that, The slider has a cylindrical structure, the tower rod of the antenna tower passes through the slider, and the slide rail is located on the inner side of the slider.

6. The radio frequency radiation spurious emission testing device according to claim 5, characterized in that, The slider is rectangular in shape, and slide rails are provided on opposite sides inside the slider. The tower of the antenna tower is a rectangular rod.

7. The radio frequency radiation spurious emission testing device according to claim 6, characterized in that, The slide rail includes pulleys, and at least one pulley is provided on each of the opposite sides of the slider in the height direction.

8. The radio frequency radiation spurious emission testing apparatus according to any one of claims 1 to 3, characterized in that, The radio frequency radiated stray emission testing device also includes: The detection circuit board has a signal input terminal and a signal output terminal, and the signal input terminal is connected to the amplifier through a line. A preamplifier is connected to the signal output terminal via a circuit. The test receiver is connected to the preamplifier via a line. The turntable is connected to the test receiver via a line at the center of the antenna mast. An optional signal generator for system calibration is connected via wiring to the center of the turntable and antenna mast. The switching and filter control center is connected via a line to an optional signal generator during system calibration. The computing center is connected to the switching and filtering control center via a line, and the computing center is adapted to process the acquired signals.

9. The radio frequency radiation spurious emission testing device according to claim 8, characterized in that, The detection circuit is equipped with an automation switch.

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