KR102482515B1 - Broadband non-direction rf power divider - Google Patents

Abstract

The present invention relates to a power divider for distributing or combining radio frequency power at a non-uniform ratio, and relates to a wideband non-directional radiofrequency power divider for efficiently improving electrical characteristics in a manufacturing process and a wideband frequency band. The input connector 11 and the output connector 12 are configured in both directions of the first inner conductor 20, and the coupled connector 13 is configured in the direction of the second coupling conductor 23, and the housing 10 The inside is a U-shaped drilled hole (18) structure, and the first inner conductor (20) and the second inner conductor (21) must be evenly arranged based on the concentric origin, and a separate support insulator for fixing them The first or second insulator (14, 15), which is a dielectric insulator provided in the input or output connector (11, 12) without inserting the first or second insulator (14, 15) to the size of the outer diameter of the second inner conductor (21) 14, 15) It is a first or second insulator (14, 15) structure that is mounted and fixed by digging a groove inside, and the frequency is a broadband frequency range covering from 350 MHz to 6 GHz. Impedance matching between the first coupling conductor 22 and the second inner conductor 21 must be well performed to achieve acceptable flatness in a wide frequency range. To this end, the diameter size can be adjusted in multiple stages at intervals smaller than λ/2 of the upper limit frequency and larger than λ/4 at the center of the first or second inner conductors 20 and 21 to compensate for impedance matching.

Description

Broadband non-directional radio frequency power divider {BROADBAND NON-DIRECTION RF POWER DIVIDER}

The present invention relates to a power divider for distributing or combining radio frequency power at a non-uniform ratio, and relates to a wideband non-directional radiofrequency power divider for efficiently improving electrical characteristics in a manufacturing process and a wideband frequency band.

In wireless communication, a radio signal is transmitted by a transmitting device and received and communicated by a receiving device. Signals are transmitted through antennas having directivity in various directions in order to service areas where the power transmitted from the base station or transmitting station is constant, and in shadow areas such as underground buildings or tunnels where signals are weak, radio frequency signals are transmitted through repeaters. It is used to provide the best communication quality by amplifying and supplying signals in multiple directions or multi-stages, or configuring a network to transmit desired power to an antenna with minimum loss. At this time, in order to distribute or extract signals, passive components such as directional couplers, power splitters, and tappers are used to expand and supply radio frequency output signals. .

A generic RF circuit for distributing non-directional power can be found in "Manual of High Frequency Technology", (Taschenbuch der Hochfrequenztechnik," H. Meinke, F. W. Gundlach, Springer-Verlag, Berlin/Heidelberg/New York, 1968), pp. 373 and 374. It is known.

As a prior art related to the present invention, the housing of the directional coupler of Patent Document 1 has a structure having a protrusion constituting the coupling port in parallel in the same direction as the output port of the coupler, and the installation of a feeder connected to the coupling port In order to facilitate and prevent bending of the feeder, it relates to a directional coupler of a negative structure, characterized in that the isolation port fastening part has a recessed structure, maintaining the extension line and electrical characteristics for connecting the coupling line and the coupling port It is disclosed to include a support of Teflon material to support the extension line so as to do so.

In addition, the non-directional radio frequency output divider of Patent Document 2 includes an outer conductor 1 and/or an outer conductor housing 1', and includes a first inner conductor 11, wherein the first inner conductor The body 11 extends within the outer conductor 1 or the outer conductor housing 1' and has a second inner conductor 13, the second inner conductor 13 comprising the first inner conductor 13. A branch conductor extending within the space 15 formed between the conductor 11 and the outer conductor 1 or the outer conductor housing 1', and extending therefrom to the second inner conductor 13 (17) is provided or the second inner conductor is electrically connected to the branch conductor, and the second inner conductor 13 is connected to the branch conductor, so that a variable output distribution is possible. In terms of the distance of the second inner conductor and/or the distance of the second inner conductor from the outer conductor 1 or the outer conductor housing 1', it is disclosed that it is relatively adjustable and/or positionable. has been

Patent Document 3 relates to a bidirectional broadband radio frequency signal distributor that provides optimal RF distribution efficiency that satisfies the reliability and low loss conditions of deterioration along with bidirectional input and output in communication equipment requiring high RF output for mobile communication services of various specifications. , the first connector 20 to the third connector 26 are coupled to the housing 10 in which the plurality of through holes 11-14 are formed, and the housing 10 and the first connector 20 to the third connector 26 ) It is a structure in which the first pin 30 to the fourth pin 60 are insulated and coupled to the inside. Furthermore, the DC blocking insulator 35 is coupled to the center of the first pin 30 to block and insulate the DC component flowing through the first pin 30, and the stable design of the line coupling provides a high power of 400 to 800 W Suitable for transmission and 5G mobile communication systems, can be applied regardless of high distribution ratio of radio frequency power and input/output, and maintains stable PIMD (Passive Inter Modulation Distortion) characteristic values below -155dBc to 165dBc It is disclosed that it can be applied with high-output coupling of 7 to 30 dB and 40 dB, and to solve long-term deterioration at high frequencies.

Republic of Korea Patent Publication No. 10-2014-0145516 (published on December 23, 2014) Republic of Korea Patent Publication No. 10-2014-0038541 (published on March 28, 2014) Republic of Korea Patent Publication No. 10-2019-0147315 (published on November 18, 2019)

The present invention is to solve the problems of the prior art in general, to achieve productivity improvement and cost reduction by improving the manufacturing process of a non-directional power divider, and also to improve electrical characteristics in a wideband radio frequency band.

The above object is achieved by the present invention by the features of the claims. In the broadband non-directional radio frequency power distributor, the input connector and the output connector are configured in both directions of the first inner conductor, and the coupled connector is configured in the direction of the second coupling conductor and the output connector, and the housing formed by three coaxial connectors to be. A drilled hole is provided in a U-shape in the housing; a second inner conductor is positioned in the drilled hole, and the first inner conductor is inserted concentrically into the second inner conductor; The first or second insulator is inserted and mounted at both ends of the first or second inner conductor, and is disposed inside the input or output connector; The first coupling conductor is connected vertically to the center of the second inner conductor, the second coupling conductor is connected to the end of the first coupling conductor in a structure parallel to the second inner conductor, and the third insulator is connected to the end of the second coupling conductor. is inserted and provided with a structure disposed inside the coupled connector; It is characterized by providing a broadband non-directional radio frequency power distributor that can be simply manufactured by reducing the number of parts by inserting the first or second insulator at both ends of the first or second inner conductor.

In addition, the first inner conductor is concentrically inserted into the second inner conductor, and the first and second jack pins are connected to both ends of the first inner conductor, and the first inner conductor and the second inner conductor are based on the concentric origin. It should be equally spaced, and without inserting a separate support insulator for fixing it, the first or second insulator, which is a dielectric insulator provided inside the input or output connector, is used to make the outer diameter of the second inner conductor the size of the first or second insulator. 2 It is formed of first and second insulator structures in which a recess is dug inside the insulator and mounted and fixed.

In this case, the first and second pins and the third pin are inserted through the central holes of the first and second insulators and the third insulator, and are disposed inside the input and output connectors and the coupled connector, and the dielectric insulator shrinks or In order to prevent movement due to change due to expansion, holes are drilled vertically at regular intervals at the ends of the first and second pins and the third pin, and the first and second insulators and the third insulator are also Penetrate vertically at intervals, but drill holes at intervals so that pins and insulators are aligned. By inserting and fixing the first and second support poles and the third support pole to the dielectric insulator and the pin, electrical characteristics can be kept constant.

In addition, the first inner conductor is connected to the input or output connector in a straight line, the first coupling conductor is connected vertically to the center of the second inner conductor, and the second coupling conductor is connected to the end of the first coupling conductor in a right angle structure. and placed inside the coupled connector. The direction of the input or output connector and the direction of the coupled connector are parallel in a U-shape.

Therefore, the coaxial connector used in the present invention is N, DIN, 4.3.10 type, and the frequency is a wideband frequency range covering from 350 MHz to 6 GHz. Electrical characteristics can be improved in a wide band frequency by adjusting the diameter size to the length of the interval smaller than λ/2 of the upper limit frequency and larger than λ/4 based on the center of the first and second inner conductors to compensate for the impedance matching of the wide band frequency. can

According to the present invention, in contrast to the conventional technology, the work process is improved by reducing the number of parts, and productivity can be improved and low-cost products can be made easily by manufacturing, thereby securing a competitive edge, and in the future, the lower limit frequency or Even when the frequency is extended toward the upper limit frequency, since there is an advantage in that it can be used without replacement in an already installed state, cost reduction can be brought to the user of the product of the present invention.

1 is a perspective view showing a broadband omnidirectional power divider according to the present invention.
2 is an exploded view showing a broadband omnidirectional power divider according to the present invention.
3 is a cross-sectional view showing a broadband omni-directional power divider according to the present invention.
4 is a detailed exploded view showing a method of coupling an inner conductor, an insulator, and a pin of a broadband non-directional power divider according to the present invention.

An embodiment of a broadband non-directional radio frequency power distributor according to the present invention will be described in detail with reference to the accompanying drawings.

In FIG. 1, a broadband non-directional radio frequency power distributor 1 according to the present invention includes a housing 10, input and output connectors 11 and 12, and a coupled connector 13.

2 and 3, in the broadband non-directional radio frequency power distributor, the input connector 11 and the output connector 12 are arranged in a straight line, and the coupled connector 13 is arranged in a U-shape. . The first inner conductor (20) is arranged concentrically within the second inner conductor (21) and is supported on both sides by first and second dielectric insulators (14, 15). These are also arranged concentrically in the holes 18 drilled in the housing 10 . The first coupling conductor 22 is vertically connected at the center of the second inner conductor 21, and the second coupling conductor 23 is connected at the end of the first coupling conductor 22 in a right angle structure. These are also arranged in concentric circles inside the perforated 18 in a U-shaped structure, and the fourth insulator 17 is inserted into the first coupling conductor 22 to support them in a concentric circle shape. In order to finally finish the hole drilled for arranging and assembling the components in the drilled hole 18 of the housing 10, a cap 24 is inserted and sealed. The space of the aperture 18 in the housing 10 is filled with a dielectric insulating material such as air, gas or vacuum. In the broadband non-directional radio frequency power distributor, the coaxial connector for connection with the outside is N, DIN, 4.3.10 type, and the frequency is a wideband frequency range covering from 350 MHz to 6 GHz. Impedance matching between the first coupling conductor 22 and the second inner conductor 21 must be well performed to achieve acceptable flatness in a wide frequency range. To this end, it is a multi-level structure that allows the diameter size to be adjusted at intervals smaller than λ/2 and larger than λ/4 of the upper limit frequency at the center of the first and second inner conductors 20 and 21 to compensate and adjust impedance matching. characteristic.

In an exemplary embodiment, the housing 10 is made of aluminum, while the inner conductors 20 and 21 and the coupling conductors 22 and 23 are made of copper. The pins 30, 31, and 32 are the central conductors of the connector and use beryllium copper, which is highly durable because they are frequently contacted. In contrast, the bodies of the connectors 11, 12 and 13 are made of copper. The insulators 14, 15, 16 and 17 used in these connectors are PTFE dielectrics.

The conductive material used in the above may include copper, aluminum, copper beryllium, and the like, and the conductive plating (eg, silver plating) or the conversion coating (chromate) can be protected against electrically applied corrosion. Silver plating is recommended because it has good loss characteristics and excellent passive interference modulation (PIMD) characteristics.

4, the first inner conductor 20 is concentrically inserted into the second inner conductor 21, and the first and second jack pins 30 and 31 are connected to both ends of the first inner conductor 20. And, the first inner conductor 20 and the second inner conductor 21 should be evenly arranged based on the concentric origin, and the input and output connectors 11 and 12 do not insert a separate support insulator to fix them. By using the first and second insulators (14, 15), which are dielectric insulators provided therein, a groove is dug into the inside of the first and second insulators (14, 15) to the size of the outer diameter of the second inner conductor (21) and mounted It is a structure of first and second insulators (14.15) to be fixed. Conventionally, in order to support the inner conductor, six insulators are used in the middle to support it, whereas in the present invention, the inner conductor is formed with only two insulators. With a structure that can support it, it is characterized by being able to produce competitive products by significantly reducing the number of parts, lowering manufacturing costs and shortening production time.

In addition, the first and second pins 30 and 31 and the third pin 32 are inserted through the central holes of the first and second insulators 14 and 15 and the third insulator 16, and the input and output connectors (11, 12) and the coupled connector 13, in order to prevent the dielectric insulator from changing due to contraction or expansion and moving, the first and second pins 30, 31 and the third pin ( 32), the first and second insulators 14 and 15, and the third insulator 16 vertically penetrate at regular intervals from the end, and the first and second support poles 33 and 34 and the third support pole ( 35) is a structure that is inserted and fixed.

In the above description, the present invention has been shown and described in relation to specific embodiments, but it is common knowledge in the art that various modifications and changes are possible without departing from the spirit and scope of the invention indicated by the claims. Anyone who has it will be able to easily understand.

Reference Numerals 1: broadband non-directional radio frequency power distributor 10: housing 11: input connector 12: output connector 13: coupled connector 14: first insulator 15: second insulator 16: third insulator 17: fourth insulator 18: perforation 20: 1st inner conductor 21: 2nd inner conductor 22: 1st coupling conductor 23: 2nd coupling conductor 24: cap 30: 1st pin 31: 2nd pin 32: 3rd pin 33: 1st support pole 34: Second support pole 34: fifth support pole

Claims (5)

In the broadband non-directional radio frequency power divider,

The input connector 11 and the output connector 12 are configured in both directions of the first inner conductor 20, and the coupled connector 13 is configured in the direction of the second coupling conductor 23, and three coaxial connectors A housing 10 formed of;

A drilled hole 18 is provided in the housing 10 in a U-shaped structure;

The second inner conductor 21 is located in the perforation 18, and the first inner conductor 20 is inserted into the second inner conductor 21 in a concentric circle shape;

First and second insulators (14, 15) are inserted and mounted at both ends of the first and second inner conductors (20, 21), and are placed in the input or output connectors (11, 12);

The first coupling conductor 22 is connected vertically to the center of the second inner conductor 21, and the second coupling conductor 23 is parallel to the second inner conductor 21, so that the first coupling conductor (22) It is connected to the end, and is provided with a structure in which the third insulator 16 is inserted into the end of the second coupling conductor 23 and disposed in the coupled connector 13;
Characterized in that the first and second insulators 14 and 15 are inserted at both ends of the first and second inner conductors 20 and 21 to simplify manufacturing by reducing the number of parts Broadband omnidirectional radio frequency power divider.
The method of claim 1, wherein the first inner conductor (20) is concentrically inserted into the second inner conductor (21), and the first and second jack pins (30, 31) is connected, and the first inner conductor 20 and the second inner conductor 21 must be evenly arranged based on the concentric origin, and the input and output connectors (without inserting a separate support insulator for fixing them) 11, 12) by using the first and second insulators (14, 15), which are dielectric insulators, to be concave inside the first and second insulators (14, 15) with the size of the outer diameter of the second inner conductor (21). Broadband non-directional radio frequency power distributor, characterized in that the structure of the first and second insulators (14.15) in which grooves are dug and mounted and fixed.
The method of claim 1, wherein the first and second pins (30, 31) and the third pin (32) are inserted through the central holes of the first and second insulators (14, 15) and the third insulator (16), , Arranged in the input and output connectors (11, 12) and the coupled connector (13), in order to prevent the dielectric insulator from moving due to change caused by contraction or expansion, the first and second pins (30, 31) And the third pin 32 vertically penetrates at regular intervals from the ends of the first and second insulators 14 and 15 and the third insulator 16, and the first and second support poles 33 and 34 And a broadband non-directional radio frequency power distributor, characterized in that the structure of inserting and fixing the third support pole (35).
The method of claim 1, wherein the first inner conductor (20) is linearly connected to the input or output connectors (11, 12), and the first coupling conductor (22) vertically connected to the center of the second inner conductor (21) is It is connected to the second coupling conductor 23 in a right angle structure and placed inside the coupled connector 13, and the direction of the input or output connectors 11 and 12 and the direction of the coupled connector 13 are parallel in a U-shape. Broadband non-directional radio frequency power distributor, characterized in that.
The method of claim 1, wherein the coaxial connector is N, DIN, 4.3.10 type, the frequency is a broadband frequency range covering from 350MHz to 6GHz, and the first and second inner conductors to compensate and adjust the impedance matching of the wideband frequency ( Broadband non-directional radio frequency power distributor, characterized in that it is a multi-level structure that allows the diameter size to be adjusted to the length of the interval smaller than λ / 2 and larger than λ / 4 of the upper limit frequency at the center of 20, 21).

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