CN210835075U - Radio frequency detection connector and radio frequency detection jig - Google Patents
Radio frequency detection connector and radio frequency detection jig Download PDFInfo
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- CN210835075U CN210835075U CN201920932723.3U CN201920932723U CN210835075U CN 210835075 U CN210835075 U CN 210835075U CN 201920932723 U CN201920932723 U CN 201920932723U CN 210835075 U CN210835075 U CN 210835075U
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Abstract
The utility model relates to a radio frequency detection tool field discloses a radio frequency detection connector and radio frequency detection tool, wherein the radio frequency detection connector includes conductive colloid, switching circuit board and coaxial high frequency joint, conductive colloid includes insulating colloid and metal line group, the metal line group includes a plurality of metal wires, a plurality of metal wires interval holding in the insulating colloid, each metal wire both ends respectively expose outside the insulating colloid, the one end of metal wire is connected with the radio frequency signal input end, the other end of metal wire is used for being connected with the radio frequency product to be measured; one end of the coaxial high-frequency connector is connected with the switching circuit board, and the other end of the coaxial high-frequency connector is used for being connected with the radio frequency detector. The utility model discloses a radio frequency detection connector is more advanced accurate, and the structure is simpler, and the transmission line is shorter, and is lower to the loss of high frequency radio frequency, can improve the radio frequency detection precision of radio frequency detector to the radio frequency product production that awaits measuring.
Description
Technical Field
The utility model relates to a radio frequency detection tool field especially relates to a radio frequency detects connector and radio frequency detection tool.
Background
Radio Frequency (RF) is an abbreviation for Radio Frequency, which refers to the electromagnetic Frequency that can be radiated into space, ranging from 300kHz to 300 GHz. Radio frequency is radio frequency current, referred to as RF for short, and is a short term for high frequency alternating current varying electromagnetic waves. Alternating current that changes less than 1000 times per second is called low frequency current, and alternating current that changes more than 10000 times per second is called high frequency current, and radio frequency is such a high frequency current. When a radio frequency detector, such as a network analyzer, is used to perform radio frequency detection on an antenna cable product, a special connector is required to connect the radio frequency detector and the antenna cable product because the radio frequency detector cannot be directly connected to the antenna cable product, so that the radio frequency detector can detect the radio frequency generated by the antenna cable product. The existing connector capable of connecting the radio frequency detector and the antenna cable product is a pogo pin connector.
However, the pogo pin connector has large rf transmission loss due to the following reasons, which is not enough to meet the accuracy requirement of rf detection.
First, referring to fig. 2, pogo pin connector 20 has a relatively complex structure and many components, the coaxial high-frequency connector comprises a coaxial high-frequency connector 250, a signal wire 240, a circuit board 230, a spring 220 and an elastic detection pin 210 which are sequentially connected, wherein the elastic detection pin 210 is used for connecting an antenna cable product, the coaxial high-frequency connector 250 is used for connecting a network analyzer, a radio-frequency signal generated by the antenna cable product can reach the network analyzer only through the elastic detection pin 210, the spring 220, the circuit board 230, the signal wire 240 and the coaxial high-frequency connector 250, reflection can be generated among components due to impedance mismatching, the more the components of the connector are, the larger the generated reflection is, the smaller the return loss is, and the lower the radio-frequency transmission power is, and the longer the transmission line, the greater the attenuation of high frequency radio frequency, resulting in a larger radio frequency transmission loss for pogo pin connectors with five different components.
Second, because pogo pin connector's elasticity detects the needle and comprises pure copper line, does not have other support insulator to separate the copper line, leads to pogo pin connector's an elasticity to detect the needle and can only be the single line. The diameter of an elastic detection needle of the pogo pin connector cannot be too large due to the size limitation of an antenna cable product, otherwise, the pogo pin connector cannot be in plug-in connection with the antenna cable product; the diameter of an elastic detection needle of the pogo pin connector cannot be too small, otherwise, the pogo pin connector is too fragile and soft, is deformed and droops due to the influence of air weight, and cannot be well connected with an antenna cable product; the diameter of the elastic sensing pin of pogo pin connectors is typically in mm. Millimeter-level single-wire elastic detection of the pogo pin connector aims at electric wave transmission, a transmission line is single, transmission power is low, and radio frequency transmission loss of the pogo pin connector is large.
Return loss is the reflection of a cable link due to impedance mismatch, and is the reflection of a pair of wires themselves. The mismatch occurs primarily at the connector, but may also occur where the characteristic impedance of the cable changes, so the quality of the construction is critical to improving return loss. Return loss will introduce signal fluctuations and the returned signal will be mistaken by the duplex gigabit network as a received signal and be confused. The return loss is the ratio of the reflected wave power to the incident wave power at the port of the transmission line. It is the decibel number of the ratio of the backward reflected light (scattered light continuously transmitted to the input end) to the input light at the optical fiber connection, the larger the return loss, so as to reduce the influence of the reflected light on the light source and the system.
In summary, the pogo pin connector has a complex structure, many components, a long transmission line and a single transmission line, so that the return loss is low, the attenuation of high-frequency radio frequency is high, the radio frequency transmission power is low, and the radio frequency transmission loss is high, so that the radio frequency detection result of the radio frequency detector on the antenna cable product is not accurate enough. Therefore, a connector which is advanced and precise, has a simpler structure and a shorter transmission line and can meet the requirement of low loss of radio frequency transmission is needed to improve the detection accuracy of the radio frequency detector for the radio frequency generated by the antenna cable product.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the weak point among the prior art, provide a more advanced precision, the structure is simpler, transmission line is shorter and can satisfy the radio frequency detection connector and the radio frequency detection tool of the low-loss requirement of radio frequency transmission, improve the detection accuracy of the radio frequency that the radio frequency detector produced to the radio frequency product that awaits measuring.
The purpose of the utility model is realized through the following technical scheme:
a radio frequency detection connector, comprising:
the switching circuit board is provided with a radio frequency signal input end;
the conductive colloid comprises an insulating colloid and a metal wire group, the metal wire group comprises a plurality of metal wires, the metal wires are contained in the insulating colloid at intervals, two ends of each metal wire are respectively exposed out of the insulating colloid, one end of each metal wire is connected with the radio frequency signal input end, and the other end of each metal wire is used for being connected with a radio frequency product to be tested; and
and one end of the coaxial high-frequency connector is connected with the switching circuit board, and the other end of the coaxial high-frequency connector is used for being connected with a radio frequency detector.
In one embodiment, each of the metal wires is obliquely accommodated in the insulating colloid, so that each of the metal wires forms an included angle with the insulating colloid.
In one embodiment, the metal wire is a copper wire, gold wire, silver wire, aluminum wire, gold-plated copper wire, gold-plated silver wire, or gold-plated aluminum wire.
In one embodiment, the gold wires have a diameter of 5 μm to 40 μm.
In one embodiment, the insulating colloid is a colloidal silica body or a rubber body.
A radio frequency detection tool, includes the radio frequency detects the connector, still includes:
the positioning jig is used for positioning and placing the radio frequency product to be tested; and
the pressing component is arranged above the positioning jig and comprises a displacement driver and a pressing piece, the radio frequency detection connector is arranged on the pressing piece, the displacement driver is connected with the pressing piece, and the displacement driver is used for driving the pressing piece to move towards the direction close to the positioning jig, so that the pressing piece can press the conductive colloid on the radio frequency product to be detected.
A radio frequency detection tool, includes the radio frequency detects the connector, still includes:
the radio frequency detection connector is arranged on the positioning jig, and one side surface of the radio frequency detection connector, which is far away from the positioning jig, is used for contacting with the radio frequency product to be detected; and
the pressing component is arranged above the positioning jig and comprises a displacement driver and a pressing piece, the displacement driver is connected with the pressing piece, and the displacement driver is used for driving the pressing piece to move towards the direction close to the positioning jig so that the pressing piece presses the radio frequency product to be detected on the conductive colloid.
In one embodiment, the pressing assembly further comprises a pressure sensor, one end of the pressure sensor is connected with the displacement driver, and the other end of the pressure sensor is connected with the pressing piece; the radio frequency detection jig further comprises a motor controller and a master controller, the master controller is electrically connected with the motor controller and the pressure sensor respectively, and the motor controller is electrically connected with the motor.
In one of them implementation mode, still include the bar code scanner, the bar code scanner set up in the top of positioning jig, the bar code scanning district of bar code scanner is towards positioning jig, the bar code scanner is used for discerning the identification code on radio frequency product surface that awaits measuring.
In one of them embodiment, still include the frame, the frame is including supporting dustcoat, objective table and movable pulley, the objective table set up in support the dustcoat, positioning jig, the subassembly that pushes down and the sign indicating number ware sets up respectively on the objective table, the movable pulley set up in support the bottom of dustcoat.
Compared with the prior art, the utility model discloses at least, following advantage has:
1. the structure of radio frequency detection connector is simpler, only constitute by three parts, because can produce the reflection because impedance mismatch between the component part, the component part of connector is more, the reflection of production is big more, return loss is little less, the event is compared in the pogo pin connector of five parts, the radio frequency detection connector structure of three parts is simpler, the transmission line is shorter, the reflection of production is little, return loss is bigger, radio frequency transmission power is higher, can satisfy the requirement of radio frequency transmission low-loss.
2. When the metal wire is the gold wire, the stability of gold wire is stronger than the stability of copper line, is difficult to the oxidation to the return loss that leads to the gold wire can be bigger than the return loss at the copper line. Through a plurality of experiments, when the metal wire and the insulating colloid form an included angle of 45-75 degrees, the reflection power of the conductive colloid is small, the return loss is large, and the attenuation to high-frequency radio frequency is small.
3. Under the condition that the connection area is the same, the radio frequency detection connector is the electrically conductive colloid that the multi-thread constitutes of micron level, for the elasticity detection needle that the millimeter level single copper line of pogo pin connector constitutes, more with the connecting wire of the radio frequency product that awaits measuring, radio frequency transmission channel is more, leads to the radio frequency detection connector to be bigger to the transmission power of electric wave, and is littleer to the decay of high frequency radio frequency.
4. The radio frequency product to be tested is positioned in the positioning groove, the displacement driver drives the pressing piece to move towards the direction close to the positioning jig, so that the pressing piece presses the conductive colloid on the radio frequency product to be tested, the metal wire of the radio frequency product to be tested and the metal wire of the conductive silica gel sheet are connected tightly and stably, and the transmission of radio frequency signals is more stable.
5. When the displacement driver drives the pressing piece to move towards the positioning groove, after the pressing piece contacts the radio frequency product to be detected, the pressure sensor feeds back a pressure signal acted on the radio frequency product to be detected by the pressing piece, the pressure signal is calculated and processed by the main controller and then rises or falls under the real-time control of the motor through the motor controller, after the pressure is stable, the radio frequency detector is electrically connected with the radio frequency product to be detected through the radio frequency detection connector, the radio frequency signal generated by the radio frequency product to be detected starts to be detected, so that the constant pressure can be ensured in the detection process, and the connection stability of the radio frequency detection connector and the radio frequency product to.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a flowchart illustrating steps of a conductive colloid-based radio frequency detection method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the construction of a pogo pin connector;
fig. 3 is a schematic structural view of a radio frequency detection fixture according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a pressing assembly according to an embodiment of the present invention;
fig. 5 is a schematic view of a partial structure of a radio frequency detection fixture according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a radio frequency detection connector according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a conductive paste according to an embodiment of the present invention;
fig. 8 is a graph comparing the return loss values of pogo pin connectors and rf detection connectors.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
A radio frequency detection method based on conductive colloid comprises insulating colloid and a metal wire group, wherein the metal wire group comprises a plurality of metal wires which are contained in the insulating colloid at intervals, and two ends of each metal wire are respectively exposed out of the insulating colloid, and the radio frequency detection method comprises the following steps: attaching the conductive adhesive to the switching circuit board so that one end of each metal wire of the conductive adhesive is connected with the radio frequency input end of the switching circuit board; electrically connecting a coaxial high-frequency connector with the adapter circuit board; contacting the conductive colloid with a radio frequency product to be detected so as to enable the other end of each metal wire of the conductive colloid to be electrically connected with the radio frequency product to be detected; and electrifying the radio frequency product to be detected so that the radio frequency signal generated by the radio frequency product to be detected sequentially passes through each metal wire of the conductive colloid, the switching circuit board and the coaxial high-frequency connector.
The above-mentioned conductive colloid-based rf detection method is better explained to better understand the concept of the conductive colloid-based rf detection method. In one embodiment, referring to fig. 1, a radio frequency detection method based on a conductive colloid includes an insulating colloid and a metal wire set, the metal wire set includes a plurality of metal wires, the plurality of metal wires are accommodated in the insulating colloid at intervals, and two ends of each metal wire are respectively exposed out of the insulating colloid, including the following steps: s110, attaching the conductive adhesive to the switching circuit board so that one end of each metal wire of the conductive adhesive is connected with a radio frequency input end of the switching circuit board; s120, electrically connecting the coaxial high-frequency connector with the adapter circuit board; s130, contacting the conductive colloid with a radio frequency product to be detected so as to enable the other end of each metal wire of the conductive colloid to be electrically connected with the radio frequency product to be detected; and S140, electrifying the radio frequency product to be detected so that the radio frequency signal generated by the radio frequency product to be detected sequentially passes through each metal wire of the conductive colloid, the switching circuit board and the coaxial high-frequency connector. It should be noted that the radio frequency product to be tested is an antenna cable electronic product capable of generating radio frequency signals. The conductive colloid is applied to the detection of the radio frequency signal generated by the radio frequency product to be detected, the conductive colloid, the switching circuit board and the coaxial high-frequency connector are sequentially connected to serve as the radio frequency detection connector to transmit the radio frequency signal, the structure of the radio frequency detection connector is simple and only comprises three parts, reflection can be generated among the parts due to impedance mismatching, the number of the parts of the connector is increased, the generated reflection is larger, the return loss is smaller, and compared with a pogo pin connector of five parts, the radio frequency detection connector of the three parts is simpler in structure, shorter in transmission line, smaller in generated reflection, larger in return loss, higher in radio frequency transmission power, and capable of meeting the requirement of low loss of radio frequency transmission, so that the detection accuracy of the radio frequency generated by the radio frequency detector on the antenna cable product is improved.
In one embodiment, the conductive colloid-based radio frequency detection method further includes the following steps: and electrically connecting the coaxial high-frequency connector with a radio frequency detector so that a radio frequency signal generated by the radio frequency product to be detected sequentially passes through each metal wire of the conductive colloid, the switching circuit board, the coaxial high-frequency connector and the radio frequency detector. It should be noted that the radio frequency detector is a detection device for detecting a radio frequency signal, such as a network analyzer. The method is to use a radio frequency detector to accurately detect radio frequency signals and display the detection result.
In one embodiment, the operation of contacting the conductive adhesive with the rf product to be tested specifically includes the following steps: placing the radio frequency product to be tested on the conductive colloid, and electrically connecting the other end of each metal wire of the conductive colloid with the radio frequency product to be tested; and controlling the displacement driving piece to drive the pressing piece to move towards the direction close to the radio frequency product to be detected, so that the pressing piece presses the radio frequency product to be detected on the conductive adhesive body. It should be noted that, in the method, the compression member is driven by the displacement driver to move in a direction close to the positioning jig, so that the compression member compresses the radio frequency product to be detected on the conductive adhesive body, and the radio frequency product to be detected is tightly and stably connected with the metal wire of the conductive silica gel sheet, thereby enabling the transmission of the radio frequency signal to be more stable.
In one embodiment, the adapting circuit board, the conductive adhesive and the coaxial high-frequency connector are arranged on the pressing member, and the operation of contacting the conductive adhesive with the radio frequency product to be tested specifically comprises the following steps: placing the radio frequency product to be tested on a positioning jig; and controlling the displacement driving piece to drive the pressing piece to move towards the direction close to the radio frequency product to be detected, so that the conductive colloid is pressed on the radio frequency product to be detected by the pressing piece. It should be noted that, in the method, the displacement driver drives the pressing member to move in a direction close to the positioning jig, so that the pressing member presses the conductive adhesive body on the radio frequency product to be tested, and the radio frequency product to be tested is tightly and stably connected with the metal wire of the conductive adhesive body, thereby enabling the transmission of radio frequency signals to be more stable.
In one embodiment, the conductive colloid-based radio frequency detection method further includes the following steps: setting an identification code on the radio frequency product to be detected; and moving the code scanner to enable a code scanning area of the code scanner to face the radio frequency product to be detected, and controlling the code scanner to identify the identification code of the radio frequency product to be detected. It should be noted that, the method distinguishes different radio frequency products to be tested through the code scanner, sets the identification code on the surface of the radio frequency product to be tested, and the code scanner scans the identification code on the surface of the radio frequency product to be tested, and sends the identified identification code information to the master controller.
In one embodiment, the conductive colloid-based radio frequency detection method further includes the following steps: connecting a pressure sensor with the pressing piece, and controlling the pressure sensor to detect the pressure of the pressing piece acting on the radio frequency product to be detected to obtain a pressure signal; and electrically connecting the pressure sensor with the master controller so that the pressure signal passes through the master controller. It should be noted that in the method, a pressure sensor feeds back a pressure signal acted on the radio frequency product to be detected by the pressing piece, the pressure signal is calculated and processed by the main controller, the motor controller controls the motor to ascend or descend in real time, and the radio frequency detector starts to detect the radio frequency signal generated by the radio frequency product to be detected after the pressure is stable, so that the pressure can be ensured to be constant in the detection process, the connection stability of the conductive colloid and the radio frequency product to be detected is ensured, and the transmission of the radio frequency signal is more stable.
A radio frequency detection connector, comprising: the switching circuit board is provided with a radio frequency signal input end; the conductive colloid comprises an insulating colloid and a metal wire group, the metal wire group comprises a plurality of metal wires, the metal wires are contained in the insulating colloid at intervals, two ends of each metal wire are respectively exposed out of the insulating colloid, one end of each metal wire is connected with the radio frequency signal input end, and the other end of each metal wire is used for being connected with a radio frequency product to be tested; and one end of the coaxial high-frequency connector is connected with the switching circuit board, and the other end of the coaxial high-frequency connector is used for being connected with a radio frequency detector.
A radio frequency detection tool includes: the radio frequency detection connector; the radio frequency detection connector is arranged on the positioning jig, and one side surface of the radio frequency detection connector, which is far away from the positioning jig, is used for contacting with the radio frequency product to be detected; and the pressing component is arranged above the positioning jig and comprises a displacement driver and a pressing piece, the displacement driver is connected with the pressing piece, and the displacement driver is used for driving the pressing piece to move towards the direction close to the positioning jig so that the pressing piece presses the radio frequency product to be detected on the conductive colloid.
In order to better explain the radio frequency detection connector and the radio frequency detection jig, the concepts of the radio frequency detection connector and the radio frequency detection jig are better understood. In one embodiment, referring to fig. 3 to 7, an rf detecting connector 120 includes: the adapter circuit board 122, the adapter circuit board 122 is provided with a radio frequency signal input end; the conductive colloid 121, the conductive colloid 121 includes an insulating colloid 1212 and a metal wire set, the metal wire set includes a plurality of metal wires 1211, the plurality of metal wires 1211 are accommodated in the insulating colloid 1212 at intervals, two ends of each metal wire 1211 are respectively exposed outside the insulating colloid 1212, one end of each metal wire 1211 is connected with the radio frequency signal input end, and the other end of each metal wire 1211 is used for being connected with a radio frequency product to be tested; and a coaxial high-frequency connector 123, wherein one end of the coaxial high-frequency connector 123 is connected with the switching circuit board 122, and the other end of the coaxial high-frequency connector 123 is used for being connected with a radio frequency detector. It should be noted that the radio frequency product to be tested is an antenna cable electronic product capable of generating radio frequency signals. A radio frequency detector is a detection device for detecting radio frequency signals, such as a network analyzer. Because the structure of radio frequency detection connector is simpler, only constitute by three parts, because can produce the reflection because impedance mismatch between the component part, the component part of connector is more, the reflection of production is big more, return loss is little less, the event is compared in the pogo pin connector of five parts, the radio frequency detection connector structure of three parts is simpler, the transmission line is shorter, the reflection of production is little, return loss is bigger, radio frequency transmission power is higher, can satisfy the requirement of radio frequency transmission low-loss, thereby the detection accuracy of the radio frequency that the radio frequency detector produced antenna cable product has been improved.
In an embodiment, each of the metal wires is obliquely accommodated in the insulating colloid, so that each of the metal wires forms an included angle with the insulating colloid, and the included angle is 45 ° to 75 °, and preferably 60 °. It should be noted that, through a plurality of experiments, it is found that when the metal wire and the insulating colloid form an included angle of 45 ° to 75 °, the reflection power of the conductive colloid is small, the return loss is large, and the attenuation to the high-frequency radio frequency is small.
In one embodiment, the metal wire is a copper wire, gold wire, silver wire, aluminum wire, gold-plated copper wire, gold-plated silver wire, or gold-plated aluminum wire. It should be noted that, when the metal wire is a gold wire, the stability of the gold wire in the air is stronger than that of the copper wire, and the gold wire is not easily oxidized, so that the return loss of the gold wire is larger, and the attenuation of the gold wire to high-frequency radio frequency is smaller.
In one embodiment, the gold wire has a diameter of 5 to 40 μm. It should be noted that, under the condition that the connection areas are the same, the conductive colloid of the radio frequency detection connector, which is formed by the micron-sized multiple wires, has more connection wires and more radio frequency transmission channels compared with the elastic detection pin formed by the millimeter-sized single copper wire of the pogo pin connector, and thus the radio frequency detection connector has higher transmission power to electric waves and lower attenuation to high-frequency radio frequency.
In one embodiment, the insulating colloid is a colloidal silica body or a rubber body. It should be noted that the silicone body or the rubber body can support and fix the metal wires and insulate the metal wires, so that the mechanical strength of the radio frequency detection connector is enhanced, and the high elastic characteristic of the silicone body or the rubber body has certain buffering performance on the metal wires, so that the metal wires are more stable in connection with radio frequency products to be detected, and the return loss of the conductive rubber body is improved.
Specifically, the preparation process of the conductive colloid comprises the following steps: providing an injection mold; placing a plurality of metal wires into an injection mold for laying and pulling wires, and then pouring insulating colloid so that the plurality of metal wires are accommodated in the insulating colloid at intervals, and the plurality of metal wires and the solidified insulating colloid form a conductive adhesive solid block together; and slicing the conductive adhesive solid block to obtain the conductive adhesive.
In one embodiment, a radio frequency detection jig comprises a positioning jig, a radio frequency detection connector and a pressing component, wherein the positioning jig is provided with a positioning groove used for positioning and placing a radio frequency product to be detected; the pressing component is arranged above the positioning jig and comprises a displacement driver and a pressing piece, the radio frequency detection connector is arranged on the pressing piece, the displacement driver is connected with the pressing piece, and the displacement driver is used for driving the pressing piece to move towards the direction close to the positioning jig, so that the pressing piece presses the conductive colloid on the radio frequency product to be detected. It should be noted that, the radio frequency product to be measured is positioned and placed in the positioning groove, and the displacement driver drives the compressing member to move in a direction close to the positioning jig, so that the compressing member compresses the conductive adhesive body on the radio frequency product to be measured, and the radio frequency product to be measured and the metal wire of the conductive silica gel sheet are closely and stably connected, so that the transmission of the radio frequency signal is more stable.
In one embodiment, referring to fig. 3 to 7, an rf detection fixture includes a positioning fixture 110, an rf detection connector 120, and a pressing component 130. The positioning fixture 110 is provided with a positioning groove 111, and the positioning groove 111 is used for positioning and placing the radio frequency product 30 to be tested; the radio frequency detection connector 120 is disposed on the positioning fixture 110, and a side surface of the radio frequency detection connector 120 away from the positioning fixture 110 is used for contacting the radio frequency product 30 to be detected; the pressing component 130 is disposed above the positioning fixture 110, the pressing component 130 includes a displacement driver 131 and a pressing member 132, the displacement driver 131 is connected to the pressing member 132, and the displacement driver 131 is configured to drive the pressing member 132 to move toward a direction close to the positioning fixture 110, so that the pressing member 132 presses the radio frequency product 30 to be tested on the conductive adhesive 121. It should be noted that, the radio frequency product 30 to be tested is positioned in the positioning slot 111 and is placed on the conductive silicon sheet of the radio frequency detection connector 120, and the displacement driver 131 is configured to drive the pressing member 132 to move toward the direction close to the positioning fixture 110, so that the pressing member 132 presses the radio frequency product 30 to be tested on the conductive colloid 121, so that the radio frequency product 30 to be tested is tightly and stably connected with the metal wire 1211 of the conductive colloid 121, and the transmission of the radio frequency signal is more stable.
In one embodiment, referring to fig. 3 to 7, the pressing member 132 includes a pressing plate 1321 and a pressing head 1322, and the pressing head 1322 is disposed on a side surface of the pressing plate 1321 close to the positioning slot 111. It should be noted that, when the displacement driver 131 drives the pressing member 132 to move toward the direction close to the positioning slot 111, the pressing head 1322 enters the positioning slot 111 and presses the rf product 30 to be tested downward to tightly and stably connect the rf product 30 to be tested with the metal wire 1211 of the conductive adhesive 121, so that the transmission of the rf signal is more stable.
In one embodiment, referring to fig. 3 to 7, the displacement driver 131 includes a motor 1311 and a linear module 1312, the motor 1311 is connected to the linear module 1312, and the linear module 1312 is connected to the pressing member 132. It should be noted that the linear module 1312 is a synchronous belt type linear module 1312, which includes a belt, a linear guide, an aluminum alloy profile, and a coupling, and is configured to convert the rotational motion of the motor 1311 into a linear motion.
In an embodiment, referring to fig. 3 to 7, the pressing assembly 130 further includes a pressure sensor 133, one end of the pressure sensor 133 is connected to the linear module 1312, and the other end of the pressure sensor 133 is connected to the pressing member 132. The radio frequency detection jig 10 further comprises a motor controller 150 and a main controller 160, wherein the main controller 160 is electrically connected with the motor controller 150 and the pressure sensor 133 respectively, and the motor controller 150 is electrically connected with the motor 1311. It should be noted that, when the displacement driver 131 drives the pressing member 132 to move toward the positioning slot 111, after the pressing member 132 contacts the rf product 30 to be detected, the pressure sensor 133 feeds back a pressure signal applied by the pressing member 132 on the rf product 30 to be detected, the pressure signal is calculated and processed by the main controller 160, and then the motor controller 150 controls the motor 1311 to ascend or descend in real time, after the pressure is stabilized, the rf detector starts to detect the rf signal generated by the rf product 30 to be detected, so that the pressure can be ensured to be constant in the detection process, thereby ensuring the connection stability between the rf detection connector 120 and the rf product 30 to be detected, and further enabling the transmission of the rf signal to be more stable.
In an embodiment, referring to fig. 3 to 7, the rf detection fixture 10 further includes a code scanner 140, the code scanner 140 is disposed above the positioning fixture 110, a code scanning area of the code scanner 140 faces the positioning fixture 110, and the code scanner 140 is configured to identify an identification code on the surface of the rf product 30 to be detected. The scanner 140 is electrically connected to the master 160. It should be noted that, in order to distinguish different rf products 30 to be tested, an identification code is set on the surface of the rf product 30 to be tested, the code of the scanner 140 is scanned to identify the identification code on the surface of the rf product 30 to be tested, and the identified identification code information is sent to the master controller 160.
In an embodiment, referring to fig. 3 to 7, the rf detection fixture 10 further includes a frame 170, the frame 170 includes a supporting housing 171, an object stage 172, a sliding wheel 173 and two safety gratings 174, and the object stage 172, the motor controller and the main controller are respectively disposed in the supporting housing 171 for supporting and preventing dust. The positioning jig, the pressing component and the code scanner are respectively arranged on the objective table 172, and the sliding wheel 173 is arranged at the bottom of the supporting outer cover 171 and used for facilitating the moving and transportation of the radio frequency detection jig 10. The two safety gratings 174 are disposed on the stage 172 and located at two opposite sides of the positioning fixture.
Under the same detection condition, an antenna product is selected as a radio frequency product to be detected, the pogo pin connector is connected with the antenna product, the network analyzer is utilized to respectively detect the sum of the standing wave ratios of the pogo pin connector and the antenna product under different radio frequency, then the pogo pin connector is disconnected with the antenna product, the radio frequency detection connector is connected with the antenna product, the network analyzer is utilized to respectively detect the sum of the standing wave ratios of the radio frequency detection connector and the antenna product under different radio frequency, and the obtained detection result is shown in fig. 8. The LDP curve is the sum of the standing wave ratios of the radio frequency detection connector and the antenna product detected under different radio wave frequencies, and the pogo pin curve is the sum of the standing wave ratios of the pogo pin connector and the antenna product detected under different radio wave frequencies. Wherein, the conversion formula of the standing wave ratio (VSWR) and the Return Loss (RL) is RL-20 log10[(VSWR+1)/(VSWR-1)]The conversion formula of the two shows that the larger the standing-wave ratio is, the smaller the return loss is. Therefore, the graph can be obtained, under the same radio frequency, the sum of the standing wave ratios of the pogo pin connector and the antenna product is larger than the sum of the standing wave ratios of the radio frequency detection connector and the antenna product, and the standing wave ratio of the antenna product is certain, so that the return loss of the pogo pin connector is smaller than the return loss of the radio frequency detection connector, the radio frequency transmission power of the radio frequency detection connector is higher, the attenuation of high-frequency radio frequency is smaller, the requirement of low loss of radio frequency transmission can be met, and the radio frequency detection connector is more suitable for being applied to the field of radio frequency detection.
Compared with the prior art, the utility model discloses at least, following advantage has:
1. the structure of radio frequency detection connector is simpler, only constitute by three parts, because can produce the reflection because impedance mismatch between the component part, the component part of connector is more, the reflection of production is big more, return loss is little less, the event is compared in the pogo pin connector of five parts, the radio frequency detection connector structure of three parts is simpler, the transmission line is shorter, the reflection of production is little, return loss is bigger, radio frequency transmission power is higher, can satisfy the requirement of radio frequency transmission low-loss.
2. The metal wire is the gold thread, because the stability of gold thread in the air is stronger than the stability of copper line, is difficult to the oxidation to lead to the return loss of gold thread bigger, it is littleer to the decay of high frequency radio frequency. Through a plurality of experiments, when the metal wire and the insulating colloid form an included angle of 45-75 degrees, the reflection power of the conductive colloid is small, the return loss is large, and the attenuation to high-frequency radio frequency is small.
3. Under the condition that the connection area is the same, the radio frequency detection connector is the electrically conductive colloid that the multi-thread constitutes of micron level, for the elasticity detection needle that the millimeter level single copper line of pogo pin connector constitutes, more with the connecting wire of the radio frequency product that awaits measuring, radio frequency transmission channel is more, leads to the radio frequency detection connector to be bigger to the transmission power of electric wave, and is littleer to the decay of high frequency radio frequency.
4. The radio frequency product to be tested is positioned in the positioning groove, the displacement driver drives the pressing piece to move towards the direction close to the positioning jig, so that the pressing piece presses the conductive colloid on the radio frequency product to be tested, the metal wire of the radio frequency product to be tested and the metal wire of the conductive silica gel sheet are connected tightly and stably, and the transmission of radio frequency signals is more stable.
5. When the displacement driver drives the pressing piece to move towards the positioning groove, after the pressing piece contacts the radio frequency product to be detected, the pressure sensor feeds back a pressure signal acted on the radio frequency product to be detected by the pressing piece, the pressure signal is calculated and processed by the main controller and then rises or falls under the real-time control of the motor through the motor controller, after the pressure is stable, the radio frequency detector is electrically connected with the radio frequency product to be detected through the radio frequency detection connector, the radio frequency signal generated by the radio frequency product to be detected starts to be detected, so that the constant pressure can be ensured in the detection process, and the connection stability of the radio frequency detection connector and the radio frequency product to.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A radio frequency detection connector, comprising:
the switching circuit board is provided with a radio frequency signal input end;
the conductive colloid comprises an insulating colloid and a metal wire group, the metal wire group comprises a plurality of metal wires, the metal wires are contained in the insulating colloid at intervals, two ends of each metal wire are respectively exposed out of the insulating colloid, one end of each metal wire is connected with the radio frequency signal input end, and the other end of each metal wire is used for being connected with a radio frequency product to be tested; and
and one end of the coaxial high-frequency connector is connected with the switching circuit board, and the other end of the coaxial high-frequency connector is used for being connected with a radio frequency detector.
2. The radio frequency detection connector according to claim 1, wherein each of the metal wires is obliquely accommodated in the insulating gel, so that each of the metal wires forms an included angle with the insulating gel.
3. The radio frequency detection connector of claim 2, wherein the metal wire is a copper wire, a gold wire, a silver wire, an aluminum wire, a gold-plated copper wire, a gold-plated silver wire, or a gold-plated aluminum wire.
4. The radio frequency detection connector according to claim 3, wherein the gold wire has a diameter of 5 μm to 40 μm.
5. The radio frequency detection connector according to claim 1, wherein the insulating gel is a silicone body or a rubber body.
6. A radio frequency detection tool, comprising the radio frequency detection connector of any claim 1 to 4, characterized by further comprising:
the positioning jig is used for positioning and placing the radio frequency product to be tested; and
the pressing component is arranged above the positioning jig and comprises a displacement driver and a pressing piece, the radio frequency detection connector is arranged on the pressing piece, the displacement driver is connected with the pressing piece, and the displacement driver is used for driving the pressing piece to move towards the direction close to the positioning jig, so that the pressing piece can press the conductive colloid on the radio frequency product to be detected.
7. A radio frequency detection tool, comprising the radio frequency detection connector of any claim 1 to 4, characterized by further comprising:
the radio frequency detection connector is arranged on the positioning jig, and one side surface of the radio frequency detection connector, which is far away from the positioning jig, is used for contacting with the radio frequency product to be detected; and
the pressing component is arranged above the positioning jig and comprises a displacement driver and a pressing piece, the displacement driver is connected with the pressing piece, and the displacement driver is used for driving the pressing piece to move towards the direction close to the positioning jig so that the pressing piece presses the radio frequency product to be detected on the conductive colloid.
8. The radio frequency detection jig of claim 7, wherein the pressing assembly further comprises a pressure sensor, one end of the pressure sensor is connected with the displacement driver, and the other end of the pressure sensor is connected with the pressing member; the radio frequency detection jig further comprises a motor controller and a master controller, the master controller is electrically connected with the motor controller and the pressure sensor respectively, and the motor controller is electrically connected with the motor.
9. The RF detecting fixture of claim 7, further comprising a code scanner disposed above the positioning fixture, wherein a code scanning area of the code scanner faces the positioning fixture, and the code scanner is configured to identify the identification code on the surface of the RF product to be tested.
10. The RF detecting tool according to claim 9, further comprising a frame, wherein the frame includes a supporting housing, a stage and a sliding wheel, the stage is disposed in the supporting housing, the positioning tool, the pressing member and the code scanner are respectively disposed on the stage, and the sliding wheel is disposed at the bottom of the supporting housing.
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| CN201920932723.3U CN210835075U (en) | 2019-06-20 | 2019-06-20 | Radio frequency detection connector and radio frequency detection jig |
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| CN201920932723.3U CN210835075U (en) | 2019-06-20 | 2019-06-20 | Radio frequency detection connector and radio frequency detection jig |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110376443A (en) * | 2019-06-20 | 2019-10-25 | 深圳市科盛通信技术有限公司 | Radio frequency detects connector and radio frequency detects jig |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110376443A (en) * | 2019-06-20 | 2019-10-25 | 深圳市科盛通信技术有限公司 | Radio frequency detects connector and radio frequency detects jig |
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