CN209232926U - coaxial coupler - Google Patents

Abstract

The utility model discloses a kind of coaxial couplers, inner conductor one including main transmission line shell and its internal coaxial arrangement, with the coupling output housing of the periphery vertical connection of main transmission line shell and its inner conductor two of internal coaxial arrangement, the both ends of the main transmission line shell are provided with connector one, the end of the coupling output housing is provided with connector two, it further include inner conductor three, the inner cavity of the main transmission line shell is coupled at least there are two insulator, the center of the insulator offers the through-hole one cooperated with conductor one, the insulator is also provided with through-hole two in the side of through-hole, the inner conductor three is connect with through-hole two, the inner conductor two is vertical with inner conductor two to be connect, increase inner conductor three not contact with inner conductor one, energy transmission is carried out by coupling, play the coaxial coupler degree of coupling Volt is compared to lower, it can be achieved that higher sound interval, also more excellent on the key indexes such as standing-wave ratio and third order intermodulation.

Description

coaxial coupler

technical field

The utility model belongs to the field of microwave communication, in particular to a coaxial coupler.

Background technique

The stripline directional coupler is used to distribute or combine the power of the microwave signal in a specific proportion. It is one of the most commonly used components in the field of microwave technology. Generally, the dielectric filled stripline coupler and the air cavity stripline coupler are the main ones. The coaxial coupler in the prior art generally adds a component for coupling output on the main transmission line, so as to allocate a specific power from the main transmission line and output it from another port, and the difference between the input power and the coupled output power is The relationship is the degree of coupling. The coaxial power coupler is characterized by simple structure, high carrying power and low intermodulation. However, most of the couplers in the existing market are square cavity, and the coupling part is generally more complicated in structure, and the processing of the connector interface is likely to have a great impact on the intermodulation and standing wave ratio.

Utility model content

The purpose of the utility model is to provide a coaxial coupler, which ensures convenient structure assembly and can effectively improve the intermodulation and standing wave ratio indexes of the coupler.

In order to achieve the above object, the utility model adopts the following technical solutions: a coaxial coupler, including a main transmission line housing and an inner conductor coaxially arranged inside it. 1. A coupling output housing vertically connected to the outer periphery of the main transmission line housing and the inner conductor 2 coaxially arranged inside, the two ends of the main transmission line housing are provided with connector 1, the end of the coupling output housing is provided with connector 2, and the inner conductor 3 is also included. There are at least two insulators installed in the inner cavity of the main transmission line housing. The center of the insulator is provided with a through hole 1 that is matched with the conductor. The insulator is also provided with a through hole on the side of the through hole 1. Second, the third inner conductor is connected to the second through hole, and the second inner conductor is vertically connected to the third inner conductor.

The outer circumference of the main transmission line housing is provided with a threaded hole 1, the end of the coupling output housing is threaded with the threaded hole 1, and the spatial position of the threaded hole 1 is between two adjacent insulators .

The axis line of the inner conductor three is parallel to the axis line of the inner conductor one, the axis line of the inner conductor two is perpendicular to the axis line of the inner conductor three, and the inner conductor three is provided with threads Hole 2, the end of the inner conductor 2 is threadedly connected with the threaded hole 2.

The insulator is made of tetrafluoro material.

In the above technical solution, the coupling output casing is vertically connected with the main transmission line casing, and the cylindrical insulator is fixed with the inner cavity of the main transmission line casing, and the inner conductor 1 and the inner conductor 3 pass through the through hole 1 and the through hole 2 respectively. The insulators are matched and fixed, the pins of connector one are connected with both ends of the inner conductor one, the connector one is connected with the two ends of the main transmission line housing, the inner conductor two is vertically connected with the inner conductor three, and the pins of the second connector are connected The needle is connected to the second inner conductor, and the second connector is connected to the end of the coupling output housing. After the assembly is completed, the inner conductor one and the inner conductor three are fixed by adding an insulator, and the inner conductor three and the inner conductor one are not in contact. Energy transmission through coupling makes the coupling degree of the coaxial coupler lower than the fluctuations, and can achieve a higher frequency range, and is also more excellent in key indicators such as standing wave ratio and third-order intermodulation.

Description of drawings

Fig. 1 is a sectional view of the utility model;

Fig. 2 is a cross-sectional view of an uninstalled inner conductor of the utility model;

Fig. 3 is a top view of the utility model.

Detailed ways

The utility model is further described in conjunction with accompanying drawings 1 to 3:

A coaxial coupler, comprising a main transmission line housing 1 and an inner conductor 3 arranged coaxially therein, a coupling output housing 2 vertically communicated with the outer periphery of the main transmission line housing 1 and an inner conductor coaxially arranged inside thereof 2. 4. The two ends of the main transmission line housing 1 are provided with a connector 11, and the ends of the coupling output housing 2 are provided with a connector 2 21, which also includes an inner conductor 3 6. The main There are at least two insulators 5 installed in the inner cavity of the transmission line housing 1. The center of the insulator 5 is provided with a through hole 51 that is matched with the conductor 3. The insulator 5 is located on the side of the through hole 51. A second through hole 52 is opened, the third inner conductor 6 is connected to the second through hole 52 , and the second inner conductor 4 is vertically connected to the third inner conductor 6 . The coupling output housing 2 is vertically connected with the main transmission line housing 1, and the cylindrical insulator 5 is fixed with the inner cavity of the main transmission line housing 1. The inner conductor 3 and the inner conductor 3 6 pass through the through hole 51 and the through hole respectively. Two 52 are fixed with the insulator 5, the pins of the connector one 11 are connected with the two ends of the inner conductor one 3, the connector one 11 is connected with the two ends of the main transmission line housing 1, the inner conductor two 4 is connected with the inner conductor three 6 for vertical connection, the pins of connector two 21 are connected with the inner conductor two 4, the connector two 21 is connected with the end of the coupling output shell 2, and the assembly is completed, and the inner conductor one 3 and the inner conductor one 3 are realized by adding the insulator 5 The fixing of conductor three 6 increases the non-contact between inner conductor three 6 and inner conductor one 3, and energy transmission is carried out through coupling, so that the coupling degree of the coaxial coupler is lower than the fluctuation, and a higher frequency range can be realized. and third-order intermodulation and other key indicators are also more excellent; the pin, inner conductor 1 3, inner conductor 2 4, and inner conductor 3 6 form a signal path to complete signal transmission, the main transmission line shell 1, the coupling output shell 2, The first connector 11 and the second connector 21 form a radio frequency signal shielding layer to prevent signal leakage and crosstalk.

The outer circumference of the main transmission line housing 1 is provided with a threaded hole 12, and the end of the coupling output housing 2 forms a threaded connection with the threaded hole 12, and the spatial position of the threaded hole 12 is adjacent between the two insulators 5. As shown in Figures 1 and 2, in the embodiment, two insulators 5 are symmetrically arranged at both ends of the inner cavity of the main transmission line housing 1, and a threaded hole 12 is opened on the outer periphery of the middle section of the main transmission line housing 1, so that the coupling output The housing 2 and the threaded hole 12 form a quick connection.

The axis line of the inner conductor three 6 is parallel to the axis line of the inner conductor one 3, the axis line of the inner conductor three 6 is perpendicular to the axis line of the inner conductor one 3, and the inner conductor three 6 is provided with a threaded hole 2 61, and the end of the inner conductor 2 4 is threadedly connected with the threaded hole 2 61. In order to better improve the key indicators such as the standing wave ratio and third-order intermodulation of the coaxial coupler, the inner conductor 3 6 is arranged in parallel with the inner conductor 1 3, and the inner conductor 2 4 is directly connected with the inner conductor 3 6 by vertical threads, and Installation is quick and easy.

The insulator 5 is made of tetrafluoro material. The use of PTFE has good insulation performance, corrosion resistance and weather resistance.

Claims (4)

1. a kind of coaxial coupler, inner conductor one (3) and main biography including main transmission line shell (1) and its internal coaxial arrangement The coupling output housing (2) of the periphery vertical connection of defeated line shell (1) and its inner conductor two (4) of internal coaxial arrangement, it is described The both ends of main transmission line shell (1) be provided with connector one (11), the end of the coupling output housing (2) is provided with company Connect device two (21), it is characterised in that: further include inner conductor three (6), the inner cavity of the main transmission line shell (1) be coupled to There are two few insulator (5), the center of the insulator (5) offers the through-hole one (51) with conductor one (3) cooperation, described Insulator (5) be also provided with through-hole two (52) in the side of through-hole one (51), the inner conductor three (6) and through-hole two (52) Connection, the inner conductor two (4) is vertical with inner conductor three (6) to be connect.

2. coaxial coupler according to claim 1, it is characterised in that: open the periphery of the main transmission line shell (1) Equipped with threaded hole one (12), the end of the coupling output housing (2) is threadedly coupled with threaded hole one (12) composition, described The spatial position of threaded hole one (12) is between adjacent two insulators (5).

3. coaxial coupler according to claim 2, it is characterised in that: the axial line of the inner conductor three (6) with it is interior The axial line of the axis parallel of conductor one (3), the inner conductor two (4) is vertical with the axial line of inner conductor three (6), described Inner conductor three (6) on offer threaded hole two (61), the end of the inner conductor two (4) and threaded hole two (61) constitute spiral shell Line connection.

4. coaxial coupler according to claim 1, it is characterised in that: the insulator (5) uses tetrafluoride material.