KR100561821B1 - A RF termination connector for antenna system - Google Patents

Abstract

The present invention is composed of parts such as a collet to prevent the flow of the resistor, an end cap to improve the assembly and waterproofness, blocking to match the 50 Ω impedance as part of the body The present invention relates to an RF termination connector for an antenna system which can reduce the cost, improve the heat transfer characteristics through reliable contact between the center conductor and the resistor, and at the same time, simplify productivity of assembly and reduce costs.

   The present invention, one side is open, the other side is formed in a cylindrical shape is blocked, the first fixing groove of a predetermined depth in the axial direction is formed on the inner surface of the blocking portion serves to ground; A central conductor inserted into the body to transmit a signal; Insulating means inserted into a space between one inner circumferential surface of the body and an outer circumferential surface of the center conductor to perform an insulation function; An impedance matching means formed in an inner space of the body for matching characteristic impedance with an insulation means; One end is axially in contact with one surface of the center conductor, the other end is inserted into the first fixing groove of the body fixed to the register; And it is inserted into and fixed to the outer surface of the body, and provides an RF termination connector for an antenna system comprising a housing coupled to an external jack (jack).

RF, Termination, Connector, Housing Nut, Insulator, Resistor

Description

RF termination connector for antenna system             

1 is a cross-sectional view showing an example of an SMA type connector according to the prior art.

Figure 2a and Figure 2b is an exploded cross-sectional view and an assembled cross-sectional view showing another example of the SMA type connector according to the prior art.

Figure 3 is an exploded cross-sectional view showing an embodiment configuration of an RF termination connector for an antenna system according to the present invention.

Figure 4 is an assembly cross-sectional view showing an embodiment configuration of the RF termination connector for an antenna system according to the present invention.

* Explanation of symbols for main parts of the drawings

101: body 102: center conductor

103: insulator 104: resistor

105: housing nut 106: "C" shaped ring

107: gasket 111: expansion groove

The present invention relates to an RF termination connector for grounding an RF signal at a final stage such as an antenna system in a radio frequency (RF) band, and more particularly, while maintaining characteristics equivalent to those of existing products. The present invention relates to an RF termination connector for an antenna system that can improve productivity and reduce costs by minimizing parts and assembly labor.

In general, facilities and components such as exchange equipment, base station equipment, and repeaters for wired or wireless communication are connected to a radio frequency (RF) cable to transmit and receive a specific signal such as a high frequency RF signal. The RF cable has many types of connectors according to the purpose and frequency of the signal, and is adopted to each part by using a connector manufactured to suit the structural characteristics of the connection part.

Co-Axial connector types include N-type, BNC-type, TNC-type, and SMA-type. Such classifications include the type of connector used, the type of cable, the frequency range of the signal, By a joining method or the like.

The N-type connector is used for a medium coaxial cable, is coupled to each other by a screw tightening method, and is often used as an N-J antenna connector.

The BNC-type is made of a small, lightweight and quick detachable outlet pin (Bayonet) fastening method for the thin cable, and is widely used for PCB.

The TNC-type is widely used for a wireless mobile communication device, and is made of a small screw tightening method.

The SMA-type, which refers to a superplastic metal alloy (SMA) type, is a connector having a 50 Ω impedance, and is widely used for thin cables of certain automatic equipments, and has a push-on (Q) type. It is divided into screw tightening method (S).

The various types of connectors listed above use many parts in order to improve the assembly and heat transfer characteristics, and thus there is a very complicated assembly process.

As an example, a structure and an assembly process of an SMA type connector installed at an RF system terminal of an antenna to ground a signal will be briefly described with reference to FIGS. 1 and 2 as follows.

The connector shown in Figure 1 has a stepped portion formed on the inner and outer circumferential surfaces, respectively, and has a cylindrical body 1 serving as a ground; A central conductor (2) inserted into the body (1) to transmit a signal, and having a groove formed in an axial direction at one end thereof; An insulator (3) interposed between one inner circumferential surface of the stepped portion of the body (1) and an outer circumferential surface of the central conductor (1) to perform an insulation function; A register 5 having one side inserted into and fixed to the groove of the center conductor 2; A blocking (4) interposed between the other inner circumferential surface of the stepped portion of the body (1) and the outer circumferential surface of the resistor (5) to match a 50 Ω impedance with the insulator (3); A space for positioning the body 1 therein, one end of which is formed with an open thread for screwing an external jack, and the other end of which has a housing nut 6 which is blocked in a wall shape; And a collet 7 positioned between the inner wall surface of the housing nut 6 and the resistor 5 to prevent the flow of the resistor 5.

The connector shown in Fig. 2 has a stepped portion formed in each of the inner and outer circumferential surfaces, and a groove is formed in a predetermined position on the outer circumferential surface, and has a cylindrical first body 11 serving as a ground; A central conductor 12 inserted into the first body 11 to transmit a signal, and having a fitting groove 12a formed at one side thereof; An insulator (13) inserted between an inner circumferential surface of one side of the step portion of the first body (11) and an outer circumferential surface of the center conductor (12) to perform an insulation function; A resistor (14) in axial contact with the fitting groove (12a) of the center conductor (12); A housing nut 15 having a space for positioning the first body 11 therein and having an open thread for screwing an external jack at one end thereof; An end cap (16) covering an open surface of one end of the first body (11) and having a groove formed therein for fixing the resistor (14) to an inner central portion thereof; The second body 17 is inserted between the one end opening of the first body 11 and the outer circumferential surface of the end cap 16, and adjusts the spacing between the first body 11 to match the 50 Ω impedance Wow; Installed between the groove of the first body 11 and the housing nut 15 to install an "O" shaped gasket 18 between the first body 11 and the housing nut 15 to maintain airtightness. It consists of a retaining ring 19 of the "C" shaping to provide a clamping force.

The assembly process of the conventional connector will be described with reference to FIG.

First, the resistor 5 is assembled into the groove of the center conductor 2, and the insulator 3 is assembled into the body 1. Then, the center conductor 5 is inserted into the insulator 3, and the block ring 4 and the assembly body 1 are forcibly fitted into the housing nut 6 to complete the assembly of the connector. .

The connector assembled as described above is coupled to the interference fit to improve the contact force and to obtain a good heat transfer characteristics, while the assembly takes a lot, and also the number of assembly labor is increased, productivity is reduced and manufacturing cost is expensive There was this.

Therefore, the present invention has been proposed to solve the above problems, such as a collet for preventing the flow of the resistor, an end cap for improving the assembly and waterproofing, and parts such as blocking for matching 50 Ω impedance This function can be configured as a part of the body to reduce the number of parts required, improve the heat transfer characteristics through reliable contact between the center conductor and the resistor, and increase productivity and reduce costs by simplifying assembly work. It is an object of the present invention to provide an RF termination connector for an antenna system.

In order to achieve the above object, the present invention, one side is open, the other side is formed in a cylindrical shape is blocked, the first fixing groove of a predetermined depth in the axial direction is formed on the inner surface of the blocking portion serves to ground; A central conductor inserted into the body to transmit a signal; Insulating means inserted into a space between one inner circumferential surface of the body and an outer circumferential surface of the center conductor to perform an insulation function; An impedance matching means formed in an inner space of the body for matching characteristic impedance with insulation means; One end is axially in contact with one surface of the center conductor, the other end is inserted into the first fixing groove of the body fixed to the register; And it is inserted into and fixed to the outer surface of the body, and provides an RF termination connector for an antenna system comprising a housing coupled to an external jack (jack).

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings of FIGS. 3 and 4.

RF termination connector for an antenna system according to the present invention is implemented to maximize the productivity and reduce the cost by reducing the number of parts required, simplifying the assembly labor, in the embodiment of the present invention in Figures 3 and 4 As shown, one side is open, the other side is formed in a cylindrical shape blocked by the wall has a body 101 to serve as a ground. The body 101 has a step portion formed on the outer peripheral surface of the opening portion side thereof, and a second fixing groove 101b is provided at one side of the step portion predetermined position to engage with a housing nut to be described later. In addition, a first fixing groove 101a having a predetermined depth is formed in the inner surface of the blocking wall of the body 101 in an axial direction, and an inner diameter thereof is extended in a radial direction to a predetermined position in the inner space to expand the characteristic impedance. The groove 111 is formed. Here, the characteristic impedance is matched by adjusting the space from the expansion groove 111 and the expansion groove 111 to the blocking wall together with the insulator, and it is preferable that the characteristic impedance is designed to have a minimum impedance of 50 Hz.

The inner central portion of the body 101 transmits a signal and is provided with a central conductor 102 having a fitting groove 102a formed at one end thereof. The inner peripheral surface and the central conductor 102 of one side of the body 101 are provided. An insulator 103 made of teflon (dielectric constant 2.08) is formed in the space between the outer circumferential surfaces of the substrate.

The center conductor 102 is provided with a register 104 whose one end is axially in contact with its fitting groove 102a and the other end is inserted and fixed into the first fixing groove 101a of the body 101. The outer surface of the body 101 is provided with a housing nut 105 that is screwed to the external jack (jack). At this time, the "C" shaped ring 106 is inserted into the second fixing groove 101b of the body 101 to firmly secure the body 101 and the housing nut 105, and maintains airtightness in the step portion. The gasket 107 is mounted.

Referring to the assembly process of the present invention configured as described above are as follows.

First, the center conductor 102 is inserted into the hollow hole of the insulator 103, and one end of the resistor 104 is inserted into the fitting groove 102a of the center conductor 102, and then these assemblies are inserted into the body 101. The other end of the register 104 is inserted into the inner space of the body 101 of the body 101, and the other end of the resistor 104 is fitted by interference fit.

Next, the "C" shaped ring 106 is inserted into the second fixing groove 101b of the body 101 and the gasket 107 is inserted into the stepped portion, and then the housing nut 105 is assembled.

As mentioned above, although the Example of this invention was described in detail, this invention is not limited to the said Example, A various change, a deformation | transformation are possible by a person with ordinary knowledge within the range of the technical idea of this invention. Will be apparent to those of ordinary skill in the art.

As described above, according to the present invention, the fixing grooves and expansion grooves, etc. in the inner space of the body to serve as a grounding role, these grooves are collets for preventing the flow of the resistor in the components constituting the existing connector, It is responsible for end caps for better assembly and waterproofness, and blocking for matching 50 Ω impedance, while reducing the number of parts required without affecting characteristics, and good contact force between the center conductor and resistors. It has an effect that can improve the heat transfer characteristics.

In addition, the present invention has another effect of increasing productivity and reducing costs by simplifying the assembly process according to the reduction of parts.

Claims (4)

One side is open, the other side is formed in a cylindrical shape is blocked, the body is a first fixed groove of a predetermined depth in the axial direction formed on the inner surface of the blocking portion serves as a ground; A central conductor inserted into the body to transmit a signal; Insulating means inserted into a space between one inner circumferential surface of the body and an outer circumferential surface of the center conductor to perform an insulation function; An impedance matching means formed in an inner space of the body for matching characteristic impedance with an insulation means; One end is axially in contact with one surface of the center conductor, the other end is inserted into the first fixing groove of the body fixed to the register; And A housing fitted to an outer surface of the body and fixed to an outer jack; RF termination connector for an antenna system comprising a. The method of claim 1, The impedance matching means RF termination connector for an antenna system, characterized in that the inner space formed in a predetermined position of the inner space of the body, and the interval from the inner diameter to the blocking surface. The method according to claim 1 or 2, RF termination connector for the antenna system further installed between the outer peripheral surface of the body and the housing for maintaining the airtight. The method according to claim 1 or 2, RF termination connector for the antenna system further comprises a fixing ring installed between the outer peripheral surface of the body and the housing to provide a fixing force.

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