WO2019100476A1

WO2019100476A1 - Microwave-signal transmission path assembly and single-pole six-throw coaxial electromechanical switch

Info

Publication number: WO2019100476A1
Application number: PCT/CN2017/116813
Authority: WO
Inventors: 卜祥蕊; 柴进; 祝杰; 熊为华; 文春华
Original assignee: 中国电子科技集团公司第四十一研究所
Priority date: 2017-11-24
Filing date: 2017-12-18
Publication date: 2019-05-31
Also published as: EP3716307A1; CN107993894A; EP3716307A4; CN107993894B

Abstract

A microwave-signal transmission path assembly (3) comprises an intermediate connector (31), six peripheral connectors (32), a transmission reed (33), and a cavity (34). Each connector is composed of an inner conductor (35), an outer conductor (36), and a dielectric support (37). The inner conductor (35) is fixed by means of the dielectric support (37) and placed inside the outer conductor (36) to form a coaxial structure. The cavity (34) is connected with the outer conductor (36). The transmission reed (33) is in contact with the inner conductor (35). The invention achieves high transmission efficiency.

Description

Microwave signal transmission path component and single-pole six-throw coaxial electromechanical switch

Technical field

The invention belongs to the field of radio frequency relays, and particularly relates to a microwave signal transmission path component and a single-pole six-throw coaxial electromechanical switch.

Background technique

As analog signal frequencies and digital signal rates continue to rise, high-frequency, high-performance electromechanical switches are increasingly used in wireless communications, satellite communications, satellite navigation, radar systems, automatic control systems, and automated test equipment (ATE). )Wait. In today's electronic equipment development towards intelligent, modular and high-frequency, high-performance electromechanical switches with high frequency, low loss and good anti-vibration performance are more and more popular, and have become the world's radio frequency microwave equipment. One of the important components. For example, a large number of broadband electromechanical switches produced by companies such as Agilent, Dowkey, Teledyne and Radiall of France have been widely used in aviation, aerospace, communication and automatic test systems. With the development of technology, these devices require electromechanical switches. The transmission switching frequency can reach 50 GHz.

Prior art solutions:

The single-pole six-throw coaxial electromechanical switch is usually composed of a control circuit component, an electromagnetic drive component, a microwave signal transmission path component, and a casing. At present, the existing single-pole six-throw coaxial electromechanical switching frequency can only reach 40 GHz, which cannot meet the requirements of use. Therefore, we need to design a new type of high frequency coaxial electromechanical switch.

The core of the coaxial electromechanical switch transmission path is a matching design of the connection between the joint, that is, the coaxial line structure and the strip line structure composed of the reed and the cavity, and the through hole is added to the dielectric support in the joint to offset the conversion part. The impedance does not match. As shown in Figure 1: The matching compensation method of this structure can not make the switch match at the frequency of 50GHz, and the through-hole structure is easy to make external impurities enter the cavity, causing a new mismatch, so new ones are needed. structure.

The highest frequency of the existing high frequency electromechanical switch can only reach 40 GHz, the frequency is too low, and can not meet the use requirements.

Summary of the invention

In view of the above technical problems existing in the prior art, the present invention provides a microwave signal transmission path component and a single-pole six-throw coaxial electromechanical switch, which is reasonable in design, overcomes the deficiencies of the prior art, and has good effects.

In order to achieve the above object, the present invention adopts the following technical solutions:

A microwave signal transmission path assembly comprising an intermediate joint, six peripheral joints, six transfer springs and a cavity; wherein each joint is composed of an inner conductor, an outer conductor and a dielectric support; the inner conductor is fixed by a dielectric support , placed inside the outer conductor, forming a coaxial line structure with the outer conductor; the transmission reed is placed inside the cavity, forming a strip line structure with the cavity; the cavity and the outer conductor are connected together, transmitting the reed and the inner The conductor contacts, thereby realizing the connection between the coaxial transmission structure and the strip line structure, and realizing the transmission function of the microwave signal, and the intermediate joint and the peripheral joint respectively serve as the input end or the output end of the microwave signal transmission path component to realize 1 input and 6 output. Or 6 input 1 output function.

Preferably, the dielectric support adopts a groove structure configured to compensate for path mismatch.

Preferably, the groove of the dielectric support of the intermediate joint and the groove of the dielectric support of the peripheral joint adopt grooves of different depths and radii.

In addition, the present invention also relates to a single-pole six-throw coaxial electromechanical switch, comprising a control circuit component, an electromagnetic drive component and a microwave signal transmission path component; an electromagnetic drive component, including an armature, a ram, a double iron core, a solenoid And the mounting seat; the ejector is placed inside the double iron core, the armature is located at the upper part of the double iron core, is in contact with the ejector pin, the double iron core is placed in the solenoid, and the solenoid is arranged inside the mounting seat; The circuit assembly, including three printed boards, is configured to control whether a current flows through a solenoid of the electromagnetic drive assembly; the microwave signal transmission path assembly is a microwave signal transmission path assembly as described above.

The control circuit component controls whether a current flows in the solenoid of the electromagnetic drive component. If a current flows in the solenoid, a magnetic field is generated on the double iron core, and the generated electromagnetic force attracts the armature to actuate the ejector pin, and further Drive the transmission reed action, so that the intermediate connector of the microwave signal transmission path component is connected or disconnected from the peripheral connector, so that the microwave signal can be input from the intermediate connector and output from any of the six peripheral connectors, thereby realizing the selection of the microwave signal. Through function.

The beneficial technical effects brought by the invention:

The invention has the advantages of high frequency and the use frequency up to 50 GHz, which can meet the special requirements of the switch matrix for the miniaturized electromechanical switch in the automatic test system.

DRAWINGS

FIG. 1 is a schematic diagram of a dielectric support structure of a 40 GHz switching microwave signal path.

2 is a schematic structural view of a single-pole six-throw coaxial electromechanical switch according to the present invention.

3 is a schematic structural view of an electromagnetic drive assembly of the present invention.

4 is a schematic structural view of a microwave signal transmission path assembly of the present invention.

Figure 5 is a schematic view showing the structure of the joint of the present invention.

Figure 6 is a schematic view showing the structure of the intermediate joint dielectric support of the present invention.

Figure 7 is a schematic view showing the structure of a peripheral joint dielectric stay of the present invention.

Wherein, 1-control circuit component; 2-electromagnetic drive component; 21-armature; 22-pin; 23-double core; 24-pin; 25-mount; 3-microwave signal transmission path component; - intermediate joint; 32 - peripheral joint; 33 - transfer reed; 34 - cavity; 35 - inner conductor; 36 - outer conductor; 37 - dielectric support.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Example 1:

As shown in FIG. 4, a microwave signal transmission path assembly 3 includes an intermediate joint 31, six peripheral joints 32, a transfer spring 33, and a cavity 34; wherein each joint is composed of an inner conductor 35 and an outer conductor 36. It is composed of a dielectric support 37. As shown in FIG. 5, the inner conductor 35 is fixed by the dielectric support 36 and placed inside the outer conductor 37 to form a coaxial structure. The transfer reed 33 is placed inside the cavity 34 to form a stripline structure. The cavity 34 is connected to the outer conductor 37, and the transmission reed 33 is in contact with the inner conductor 35, thereby realizing the connection between the coaxial transmission structure and the strip line structure, realizing the transmission function of the microwave signal, the intermediate joint 31 and the peripheral joint 32. They are respectively used as an input terminal and an output terminal of the microwave signal transmission path component 3. Wherein, the contact of the transmission reed 33 with the six peripheral connectors 32 can be controlled by the electromagnetic driving component 2 to realize the function of inputting the microwave signal from one way and outputting one of the six paths.

The dielectric support 37 uses a groove structure to compensate for path mismatch.

As shown in FIG. 6 and FIG. 7, the groove of the dielectric support of the intermediate joint 31 and the groove of the dielectric support of the peripheral joint 32 adopt grooves of different depths and radii to improve the degree of matching.

Example 2:

On the basis of the above embodiments, the present invention also relates to a single-pole six-throw coaxial electromechanical switch, comprising a control circuit component 1, an electromagnetic drive component 2 and a microwave signal transmission path component 3; the control circuit component 1, comprising three prints a board configured to control whether a current flows through the solenoid 24 of the electromagnetic drive assembly 2; the electromagnetic drive assembly 2, the structure of which is shown in FIG. 3, includes an armature 21, a jack 22, and a double core 23, the solenoid 24 and the mounting seat 25, the armature 21 is located at the upper portion of the double iron core 23, is in contact with the ram 22 placed inside the double iron core 23, and the double iron core 23 is placed in the solenoid 24. The solenoid 24 is arranged inside the mount 25.

The control circuit assembly 1 controls whether or not a current flows in the solenoid 24 of the electromagnetic drive unit 2. If a current flows in the solenoid 24, the generated electromagnetic force causes the double iron core 23 to operate, and the double iron core 23 is operated. The magnetic field is generated, and the generated electromagnetic force attracts the armature 21 to actuate the plunger 22, thereby driving the transmission spring 33 to cause the intermediate joint 31 of the microwave signal transmission path assembly 3 to be connected or disconnected from the peripheral connector 32, so that the microwave signal It is possible to input from the intermediate connector 31 and output from any of the six peripheral connectors 32, thereby implementing the gating function of the microwave signal.

The above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and variations, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the present invention. The scope of protection of the invention.

Claims

A microwave signal transmission path assembly is characterized in that it comprises: an intermediate joint, six peripheral joints, six transmission springs and a cavity; wherein each joint is composed of an inner conductor, an outer conductor and a dielectric support; The conductor is fixed by the dielectric support and placed inside the outer conductor to form a coaxial line structure with the outer conductor; the transmission reed is placed inside the cavity to form a strip line structure with the cavity; the cavity is connected with the outer conductor, The transmission reed is in contact with the inner conductor, thereby realizing the connection between the coaxial transmission structure and the strip line structure, and realizing the transmission function of the microwave signal, and the intermediate joint and the peripheral joint respectively serve as the input end or the output end of the microwave signal transmission path component, Implement 1 input 6 output or 6 input 1 output function.
The microwave signal transmission path assembly of claim 1 wherein the dielectric support is of a recessed configuration configured to compensate for path mismatch.
The microwave signal transmission path assembly according to claim 1, wherein the groove of the dielectric support of the intermediate joint and the groove of the dielectric support of the peripheral joint are grooves of different depths and radii.
Single-pole six-throw coaxial electromechanical switch, comprising a control circuit component, an electromagnetic drive component and a microwave signal transmission path component; an electromagnetic drive component, comprising an armature, a ram, a double iron core, a solenoid and a mounting seat; Inside the double iron core, the armature is located at the upper part of the double iron core, in contact with the ram, the double iron core is placed in the solenoid, the solenoid is arranged inside the mount; the control circuit component includes three prints The board is configured to control whether a current flows in the solenoid of the electromagnetic drive assembly; and the special feature is that the microwave signal transmission path assembly is the microwave signal transmission path assembly of claim 1.