CN217060300U - Passive cavity filter test fixture - Google Patents

Abstract

The utility model discloses a passive cavity filter test fixture, include: the filter comprises two clamping pieces and a screw rod for connecting the clamping pieces, wherein two ends of the filter are respectively provided with one clamping piece, each clamping piece comprises a fixing piece, a first serial interface and a second serial interface, the first serial interfaces are inserted into the fixing pieces, each first serial interface comprises an insertion section and a leading-out section, the leading-out sections are welded with the insertion sections at an angle, and the leading-out sections correspond to signal holes of the filter; the second serial interface is completely symmetrical to the first serial interface in position and structure. The utility model discloses insert serial interface from the both sides of fixed block, increase the distance between two serial interfaces, reduced the interference of each other between two serial interfaces. The plug-in section and the lead-out section of the serial interface are connected by welding, so that the connection reliability is guaranteed, the plug-in section and the lead-out section cannot easily fall off, and the stable transmission of signals is also guaranteed.

Description

Passive cavity filter test fixture

Technical Field

The utility model relates to a wave filter anchor clamps field, especially a passive cavity filter test fixture.

Background

With the continuous development of communication technology, in order to meet the requirements of people on network speed, radio frequency microwaves are smaller and smaller, wherein a passive radio frequency module is an important component in a radio frequency system and has wide application. Generally, two ends of a filter are fixed by two clamps, a serial interface (SMA interface) is inserted into the fixed plate, an output end of the serial interface corresponds to a signal hole on the filter, and a signal is input to the filter from the serial interface, processed by the filter, and then output through the serial interface on the other clamp.

However, in the prior art, generally, the serial interfaces are straight rod-shaped, two serial interfaces are vertically inserted into the fixing plate, and because the distance between the two serial interfaces is small, the two serial interfaces are generally sleeved by the same SMA connector and are in the same connector. However, if the interval between two serial interfaces is too small, mutual interference can be generated, the test is inconvenient, the size in the existing mode is too large, and the test of connection with a network branch cannot be realized.

Disclosure of Invention

The utility model overcomes produce among the prior art that to interfere with each other, oversize leads to the not enough of unable completion test, provide a passive cavity filter test fixture, for reaching above-mentioned purpose, the utility model discloses a technical scheme be: a passive cavity filter test fixture, comprising: the filter comprises two clamping pieces and a screw rod for connecting the clamping pieces, wherein one clamping piece is arranged at one end of the filter, the other clamping piece is arranged at the other end of the filter, the clamping pieces comprise a fixing piece, a first serial interface and a second serial interface which are arranged in a mirror image mode by taking a central shaft of the fixing piece as an axis, and the first serial interface and the second serial interface are identical in structure; the first serial interface comprises an insertion section and an extraction section, the extraction section and the insertion section are welded at an angle, and the extraction section corresponds to a signal hole of the filter. In a preferred embodiment of the present invention, the fixing member includes a fixing plate, a fixing block disposed on the fixing plate, and a connecting cavity inside the fixing block, wherein the fixing plate is provided with at least two fixing holes; the fixed block with all be provided with four through-holes on the fixed plate, the through-hole is 2 x 2 array and arranges, through-hole on the fixed block with through-hole one-to-one on the fixed plate.

In a preferred embodiment of the present invention, the first serial port is inserted into the connection cavity from one side of the fixing block, and the second serial port is inserted into the connection cavity from the other side opposite to the fixing block; the connector end of the insertion section is located outside the fixed block, the welding end of the insertion section is located in the connecting cavity, the leading-out section penetrates through the through hole in the fixed block and the through hole in the fixed plate, and the leading-out end of the leading-out section corresponds to the signal hole in the filter.

In a preferred embodiment of the present invention, the surfaces of the first serial interface and the second serial interface are provided with teflon layers.

In a preferred embodiment of the present invention, a top cover is disposed on the top of the connection cavity, and the top cover is connected to the fixing block through a fastener.

In a preferred embodiment of the present invention, the surface of the joint end is covered with an SMA joint.

The utility model provides a defect that exists among the background art, the utility model discloses possess following beneficial effect:

the utility model discloses insert serial interface from the both sides of fixed block, increase the distance between two serial interfaces, reduced the interference of each other between two serial interfaces. The plug-in section and the lead-out section of the serial interface are connected by welding, so that the connection reliability is guaranteed, the plug-in section and the lead-out section cannot easily fall off, and the stable transmission of signals is also guaranteed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are only some embodiments of the present invention, and for those skilled in the art, drawings of other embodiments can be obtained according to the drawings without creative efforts.

Fig. 1 is an assembly diagram of a passive cavity filter test fixture according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the inside of the connection cavity of the passive cavity filter test fixture according to an embodiment of the present invention

Fig. 3 is a schematic view of a clamp of a passive cavity filter test fixture according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a lead-out section of a test fixture for passive cavity filters according to an embodiment of the present invention.

The reference numerals are as follows: 01. a clamp; 02. a filter; 03. a screw; 101. a fixing plate; 1011. a fixing hole; 102. a fixed block; 103. a top cover; 201. a first serial interface; 2011. an insertion section; 2012. a lead-out section; 202. a second serial interface; 203. a backing plate; 204. a polytetrafluoroethylene layer; 301. a fastener; 401. And (4) SMA joints.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description, wherein the drawings are simplified schematic drawings and only the basic structure of the present invention is illustrated schematically, so that only the structure related to the present invention is shown, and it is to be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific cases.

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.

As shown in fig. 1-2, a small passive cavity filter 02 test fixture, wherein includes: the filter comprises two clamping pieces 01 and a screw 03 used for connecting the clamping pieces 01, wherein one clamping piece 01 is arranged at each of two ends of a filter 02, each clamping piece 01 comprises a fixing piece, a first serial interface 201 and a second serial interface 202, the first serial interface 201 is inserted into the fixing piece, the first serial interface 201 comprises an insertion section 2011 and a lead-out section 2012, the lead-out section 2012 and the insertion section 2011 are welded at an angle, and the lead-out section 2012 corresponds to a signal hole of the filter 02; the second serial interface 202 is completely symmetrical with the first serial interface 201 in position and structure.

The utility model discloses in insert fixed block 102 by the side with first serial interface 201 and second serial interface 202, reduced the interference of each other between the two, and also very suitable on arranging of size, be favorable to effectively going on of connection test.

As shown in fig. 1, at least two fixing holes 1011 are formed in the fixing plate 101, the two test fixtures are fixedly connected by a screw 03, and the filter 02 is fixed between the two test fixtures.

As shown in fig. 2-4, the fixing member includes a fixing plate 101, a fixing block 102 disposed on the fixing plate 101, and a connecting cavity inside the fixing block 102, wherein the fixing plate 101 is provided with at least two fixing holes 1011; four through holes are formed in the fixing block 102 and the fixing plate 101, the through holes are arranged in a 2 x 2 array, and the through holes in the fixing block 102 correspond to the through holes in the fixing plate 101 one by one.

Referring to fig. 2-3, the first serial port 201 is inserted into the connection chamber from one side of the fixed block 102, and the second serial port 202 is inserted into the connection chamber from the opposite side of the fixed block 102; the joint end of the insertion section 2011 is located outside the fixed block 102, the welding end of the insertion section 2011 is located in the connecting cavity, the lead-out section 2012 penetrates through the through hole in the fixed block 102 and the through hole in the fixed plate 101, and the lead-out end of the lead-out section 2012 is arranged corresponding to the signal hole in the filter 02.

Specifically, the serial interfaces are inserted from both sides of the fixed block 102, so that the distance between the two serial interfaces is increased, and the mutual interference between the two serial interfaces is reduced. The insertion section 2011 and the leading-out section 2012 of the serial interface are connected by welding, so that the connection reliability is guaranteed, the connection cannot easily fall off, and the stable transmission of signals is also guaranteed. However, the insertion stage 2011 and the extraction stage 2012 are not limited to being connected by welding, and may be integrally molded during casting. The mode of connecting wires or other connecting pieces is not adopted as much as possible, firstly, the distance between the two is small, the operation is inconvenient, the installation is troublesome, and secondly, when the connecting pieces are connected, the distance between the two serial interfaces is inevitably shortened, and the interference between the two serial interfaces is increased.

Referring to fig. 2-3, the surfaces of the first serial port 201 and the second serial port 202 except for the portions located in the connection cavity are provided with teflon layers 204.

Specifically, the surface of the serial port is coated with the teflon layer 204, and the portion inside the connection cavity is not in contact with other elements, and the connection between the insertion section 2011 and the extraction section 2012 needs to be performed, so the teflon layer 204 is not coated, and the teflon has excellent chemical stability, corrosion resistance, sealing performance, electrical insulation performance and good aging resistance. Polytetrafluoroethylene has the following advantages: high temperature resistance, and the use working temperature reaches 250 ℃; the low temperature resistance is realized, the mechanical toughness is good at low temperature, and the elongation of 5 percent can be kept even if the temperature is reduced to-196 ℃; corrosion resistance, inertness to most chemicals and solvents, strong acid and alkali resistance, water resistance and various organic solvents resistance; the weather resistance is good, and the best aging life in plastics is achieved; the adhesion is avoided, the surface tension in the solid material is the minimum, and no substance is adhered; no toxicity, physiological inertia and no adverse reaction.

As shown in fig. 3, a top cover 103 is disposed on the top of the connection cavity, and the top cover 103 is connected to the fixing block 102 by a fastener 301. The top cover 103 is provided to protect the connection between the plug-in section 2011 and the lead-out section 2012 of the serial port, so as to prevent interference caused by other components touching the serial port in the connection cavity.

Typically, the fastener 301 is a screw.

As shown in fig. 2 to 3, the insertion section 2011 is fixedly connected with the fixed block 102 by a fastener 301, a backing plate 203 is arranged between the fastener 301 and the fixed block 102, the fastener 301 penetrates through the backing plate 203 to be connected with the fixed block 102, and a cushion block is arranged to enable the connection to be firmer and more stable.

As shown in fig. 2-3, the surface of the connector end is fitted with an SMA connector 401. The joint part is more stable and convenient to connect.

The above examples only represent some embodiments of the present invention, and the description thereof is more 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 (6)

1. The utility model provides a passive cavity filter test fixture which characterized in that includes: the filter comprises two clamping pieces and a screw rod for connecting the clamping pieces, wherein one clamping piece is arranged at one end of the filter, the other clamping piece is arranged at the other end of the filter, the clamping pieces comprise a fixing piece, a first serial interface and a second serial interface which are arranged in a mirror image mode by taking a central shaft of the fixing piece as an axis, and the first serial interface and the second serial interface are identical in structure; the first serial interface comprises an inserting section and a leading-out section, the leading-out section is welded with the inserting section at an angle, and the leading-out section corresponds to a signal hole of the filter.

2. The passive cavity filter test fixture of claim 1, wherein: the fixing piece comprises a fixing plate, a fixing block arranged on the fixing plate and a connecting cavity inside the fixing block, wherein at least two fixing holes are formed in the fixing plate; the fixing block and the fixing plate are provided with four through holes, the through holes are arranged in a 2 x 2 array, and the through holes in the fixing block correspond to the through holes in the fixing plate one to one.

3. The passive cavity filter test fixture of claim 2, wherein: the first serial interface is inserted into the connecting cavity from one side face of the fixed block, and the second serial interface is inserted into the connecting cavity from the other opposite side face of the fixed block; the connector end of the insertion section is located outside the fixed block, the welding end of the insertion section is located in the connecting cavity, the leading-out section penetrates through the through hole in the fixed block and the through hole in the fixed plate, and the leading-out end of the leading-out section corresponds to the signal hole in the filter.

4. The passive cavity filter test fixture of claim 1, wherein: and polytetrafluoroethylene layers are arranged on the surfaces of the first serial interface and the second serial interface.

5. The passive cavity filter test fixture of claim 2, wherein: the top of connecting the chamber is provided with the top cap, the top cap pass through the fastener with the fixed block is connected.

6. The passive cavity filter test fixture of claim 3, wherein: the joint end sleeve is provided with an SMA joint.

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