CN103904403A - Identical-frequency combiner of 3 dB electric bridge with mutual interference portions - Google Patents

Abstract

The invention discloses a same-frequency combiner with a 3dB electric bridge of an interfering part; the ring-shaped coupling effect can be greatly enhanced by setting a ring-shaped first coupling part and a second coupling part, which is measured and calculated by a simulation software The output coupling coefficient is high, and the coupling frequency can reach 2950KHz, which greatly meets the requirements of the current mainstream LTE technical standards, and its practicability is greatly increased. In addition, its structure is simple, not easy to damage, and its service life is long. The second separation rod and the extended first and second mutual interference parts greatly increase the isolation.

Description

A kind of same-frequency combiner with 3dB electric bridge of mutual interference

technical field

The invention relates to the technical field of co-frequency combiners, in particular to a co-frequency combiner with a 3dB electric bridge of an interference part.

Background technique

In the same-frequency combiner, the main component is the 3dB bridge. The 3dB bridge is an electrical device that couples two signals of the same frequency into one output signal; it requires high coupling, precision, and wide frequency band. ;It is widely used in the communication industry. Among them, in the new standard LTE of the communication industry, the frequency band required by the LTE standard is 2570MHz-2750MHz. In the same-frequency combiner currently on the market, the 3dB bridge used generally couples the frequency The width is 600MHz-2400MHz, which cannot meet the frequency band required by the new LTE standard. In addition, in order to achieve the purpose of broadband, the 3dB on the market currently uses different coupling line forms, resulting in waste of molds, so it has the disadvantage of high production costs; and the current bridge isolation on the market is small.

Contents of the invention

The purpose of the present invention is to overcome the above-mentioned shortcoming, provide a kind of coupling frequency width can reach 2950MHZ, and the shape of two coupling lines is the same, cost-saving, high isolation with the same frequency combiner with 3dB bridge of mutual interference part .

In order to achieve the above object, the specific solution of the present invention is as follows: a kind of same-frequency combiner with the 3dB electric bridge of the mutual interference part includes a housing and a 3dB electric bridge arranged in the casing; the 3dB electric bridge includes the first A coupling line and a second coupling line, the first coupling line includes a circular first coupling part, a first output pin extending obliquely upward from one side of the first coupling part, and a first output pin extending from the other side of the first coupling part The first input pin extending obliquely downward; the free end of the first output pin is set as the first output end, and the free end of the first input pin is set as the first input end;

The second coupling line includes a circular second coupling part, a second output pin extending obliquely upward from one side of the second coupling part, and a second input pin extending obliquely downward from the other side of the second coupling part. pin; the free end of the second output pin is set as the second output end, and the free end of the first input pin is set as the second input end;

The first coupling line and the second coupling line are parallel and overlapped, and the distance between the first coupling part and the second coupling part is 4mm-8mm;

Both sides of the first coupling part and the second coupling part are respectively provided with mounting holes, an insulating support is provided between the mounting holes of the first coupling part and the corresponding mounting holes of the second coupling part, and the first The coupling part and the second coupling part are fixed by insulating pillars;

The inner ring of the first coupling portion extends downwards with a rectangular first separation rod, the lateral width of the separation rod is 2mm, and the vertical height is 3mm; There is a first mutual interference part extending downward obliquely, and a square first separation block extends downward from the free end of the first mutual interference part;

The inner ring of the second coupling portion extends downwards with a rectangular second separation rod, the lateral width of the separation rod is 2mm, and the vertical height is 3mm, and the second separation rod is connected to one of the second output pins. There is a second mutual interference part extending upward obliquely from the side, and a second square separating block extends upward from the free end of the second mutual interference part.

Wherein, the first coupling line and the second coupling line have the same shape and are arranged symmetrically.

Wherein, the inner ring diameters of the first coupling part and the second coupling part are both 25mm.

Wherein, each insulating pillar is provided with two card slots, and the distance between the two card slots of each insulating column is equal.

Wherein, the distance between the first coupling part and the second coupling part is 5mm.

The beneficial effects of the present invention are: the ring-shaped coupling effect can be greatly enhanced by setting the ring-shaped first coupling part and the second coupling part, the coupling coefficient measured and calculated by the simulation software is high, and the coupling frequency can reach 2950KHZ, greatly It meets the requirements of the current mainstream LTE technical standards, and its practicability is greatly increased. In addition, its structure is simple, it is not easy to be damaged, and its service life is long. Moreover, the first separation rod, the second separation rod and the extended first and second separation rods are set. The second mutual interference part greatly increases the isolation.

Description of drawings

Fig. 1 is the front view of 3dB electric bridge of the present invention;

Fig. 2 is the front view of the first coupling line;

Fig. 3 is the front view of the second coupling line;

Fig. 4 is the front view of the present invention;

Fig. 5 is a cross-sectional view when the first coupling line, the second coupling line and the insulating support are mated;

Fig. 6 is a schematic diagram of the present invention reaching the highest coupling frequency in the simulation software;

Explanation of reference numerals among Fig. 1 to Fig. 6:

1-the first coupling line; 11-the first coupling part; 12-the first output pin; 13-the first input pin; 14-the first output end; 15-the first separation rod; 15a-the first mutual interference part; 15b - first separation block;

2-the second coupling line; 21-the second coupling part; 22-the second output pin; 23-the second input pin; 24-the second output end; 25-the second separation rod; 25a-the second mutual interference part; 25b - second separation block;

3-installation hole; 3a-insulation pillar;

4 - Housing.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, and the implementation scope of the present invention is not limited thereto.

As shown in Figures 1 to 6, a co-frequency combiner with a 3dB bridge of the mutual interference part described in this embodiment includes a housing and a 3dB bridge disposed in the housing 4; the 3dB The bridge includes a first coupling line 1 and a second coupling line 2, the first coupling line 1 includes a circular first coupling part 11, a first output extending obliquely upward from the side of the first coupling part 11 Pin 12, the first input pin 13 extending obliquely downward from the other side of the first coupling part 11; the free end of the first output pin 12 is provided with a first output terminal 14, and the free end of the first input pin 13 is provided with The first input terminal; the second coupling line 2 includes a ring-shaped second coupling part 21, a second output pin 22 extending obliquely upward from one side of the second coupling part 21, and a second output pin 22 from the second coupling part 21 The second input pin 23 extending obliquely downward; the free end of the second output pin 22 is provided with the second output end 24, and the free end of the first input pin 13 is provided with the second input end; the first coupling line 1 and the second coupling line 2 are parallel and overlapped, and the distance between the first coupling part 11 and the second coupling part 21 is 4mm-8mm; the two sides of the first coupling part 11 and the second coupling part 21 are respectively set There is a mounting hole 3, an insulating support 3a is provided between the mounting hole 3 of the first coupling part 11 and the corresponding mounting hole 3 of the second coupling part 21, and the connection between the first coupling part 11 and the second coupling part 21 The space is fixed by insulating pillars 3a. The ring-shaped first coupling part 11 and the second coupling part 21 can greatly enhance the ring-shaped coupling effect. The coupling coefficient calculated by the simulation software is high, and the coupling frequency can reach 2950KHZ, which greatly satisfies the current mainstream. The requirements of LTE technical standards greatly increase its practicability, and in addition, its structure is simple, it is not easy to be damaged, and its service life is long.

Further, the same-frequency combiner corresponding to it made by using the 3dB electric bridge described in this embodiment includes a housing 4 and the above-mentioned 3dB electric bridge; the above-mentioned 3dB electric bridge is fixed in the casing 4 to form frequency combiner.

Further, the same-frequency combiner manufactured by using the 3dB electric bridge described in this embodiment includes a housing 4 and the above-mentioned 3dB electric bridge.

Further, in the same-frequency combiner with a 3dB bridge of the mutual interference part described in this embodiment, the first coupling line 1 and the second coupling line 2 have the same shape and are arranged symmetrically; in this way, the first The coupling line 1 and the second coupling line 2 are produced in the same mold, which saves the cost of the mold, reduces the cost of raw materials, improves the production efficiency, and reduces the accident rate.

Further, in the same-frequency combiner with a 3dB bridge of the mutual interference part described in this embodiment, the inner ring diameters of the first coupling part 11 and the second coupling part 21 are both 25 mm; through computer software simulation It is estimated that when the diameters of the inner rings of the first coupling part 11 and the second coupling part 21 are both 25 mm, the frequency broadband is optimal and the effect is the best.

Further, in the same-frequency combiner with a 3dB bridge of the mutual interference part described in this embodiment, each insulating pillar 3a is provided with two card slots, and the two card slots of each insulating column The distances are equal; in this way, the distance between the first coupling part 11 and the second coupling part 21 can be precisely controlled to prevent the distortion of the effect caused by the change of the distance.

Furthermore, in the same-frequency combiner with the 3dB bridge of the mutual interference part described in this embodiment, the distance between the first coupling part 11 and the second coupling part 21 is 5 mm. Calculated by computer software simulation, when the distance between the first coupling part and the second coupling part 21 is 5mm, the frequency broadband is optimal and the effect is the best.

Further, in the same-frequency combiner with a 3dB bridge of the mutual interference part described in this embodiment, the inner ring of the first coupling part 11 extends downwards with a rectangular first separating rod 15, the The lateral width of the separation rod is 2 mm, and the vertical height is 3 mm; the first separation rod 15 extends obliquely downward to one side of the first output pin 12 with a first mutual interference part 15 a, and the first mutual interference part 15 a There is a square first separation block 15b extending downward from the free end of the free end; through the first separation rod 15, the first mutual interference part 15a and the first separation block 15b, the isolation of the bridge can be greatly increased. Through the computer software From the simulation, it can be seen that such setting can achieve an isolation degree of 25db, and the first mutual interference part 15a has a greater isolation effect.

Further, in the same-frequency combiner with a 3dB bridge of the mutual interference part described in this embodiment, the inner ring of the second coupling part 21 extends downward with a rectangular second separation rod 25, the The lateral width of the separation rod is 2 mm, and the vertical height is 3 mm. The second separation rod 25 extends obliquely upward to the second output pin 22 and has a second mutual interference part 25 a. The second mutual interference part 25 a There is a second square separating block 25b extending upward from the free end. Same as above, by setting the second separation rod 25, the isolation of the bridge can be greatly increased. Through computer software simulation, it can be seen that the isolation can reach 25db, and the second mutual interference part 25a plays a greater isolation role. .

The above is only a preferred embodiment of the present invention, so all equivalent changes or modifications made according to the structure, features and principles described in the patent application scope of the present invention are included in the protection scope of the patent application of the present invention.

Claims (5)

1. there is a same frequency combiner of disturbing mutually the 3dB of portion electric bridge, include housing and be located at the 3dB electric bridge in housing (4); Described 3dB electric bridge includes the first coupling line (1) and the second coupling line (2),

It is characterized in that: the first output pin (12) that described the first coupling line (1) comprises first coupling part (11) of annular, extend upward from the first coupling part (11) one skew backs, from oblique downward the first input pin (13) stretching out of the first coupling part (11) opposite side; The free end of described the first output pin (12) is established the first output (14), and the free end of the first input pin (13) is established first input end;

The second output pin (22) that described the second coupling line (2) comprises second coupling part (21) of annular, extend upward from the second coupling part (21) one skew backs, from oblique downward the second input pin (23) stretching out of the second coupling part (21) opposite side; The free end of described the second output pin (22) is established the second output (24), and the free end of the first input pin (13) is established the second input;

Described the first coupling line (1) is parallel with the second coupling line (2) and overlap, and between the first coupling part (11) and the second coupling part (21) are heavy, distance is 4mm-8mm;

Described the first coupling part (11) is respectively equipped with installing hole (3) with the both sides of the second coupling part (21), between the installing hole (3) of described the first coupling part (11) and the corresponding installing hole (3) of the second coupling part (21), be provided with insulation column (3a), fixing by insulation column (3a) between described the first coupling part (11) and the second coupling part (21);

Downward rectangular first declutcher control lever (15) that is extended with of interior hoop of described the first coupling part (11), the transverse width of described declutcher control lever is 2mm, is vertically highly 3mm; Described the first declutcher control lever (15) is extended with one first downwards to a skew back of the first output pin (12) and disturbs mutually portion (15a), and the described first free end of disturbing mutually portion (15a) is extended with foursquare first explant (15b) downwards;

Downward rectangular second declutcher control lever (25) that is extended with of interior hoop of described the second coupling part (21), the transverse width of described declutcher control lever is 2mm, be vertically highly 3mm, described the second declutcher control lever (25) is upwards extended with one second to a skew back of the second output pin (22) and disturbs mutually portion (25a), and the described second free end of disturbing mutually portion (25a) is upwards extended with foursquare second explant (25b).

2. a kind of same frequency combiner of disturbing mutually the 3dB of portion electric bridge that has according to claim 1, is characterized in that: described the first coupling line (1) is identical with the second coupling line (2) shape and be symmetrical arranged.

3. a kind of same frequency combiner of disturbing mutually the 3dB of portion electric bridge that has according to claim 2, is characterized in that: the interior ring diameter of described the first coupling part (11) and the second coupling part (21) is 25mm.

4. a kind of same frequency combiner of disturbing mutually the 3dB of portion electric bridge that has according to claim 1, is characterized in that: on each insulation column (3a), be equipped with twice draw-in groove, and the twice draw-in groove of each insulation cylinder distance equates.

5. a kind of same frequency combiner of disturbing mutually the 3dB of portion electric bridge that has according to claim 1, is characterized in that: between the first coupling part (11) and the second coupling part (21) are heavy, distance is 5mm.

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