A kind of same frequency combiner
Technical field
The present invention relates to a kind of same frequency combiners.
Background technology
Structure with frequency combiner is that a 3dB electric bridge is set in a can i.e. shielding box to realize, 3dB electric bridges
It is a kind of electrical part that two kinds of identical signals of frequency are coupled into signal output all the way, broadband band 3DB electric bridges are always
The direction that power splitter class is made great efforts, realize wide frequency 3 dB electric bridge be at present there is an urgent need to, the especially newly-increased standard of the communications industry
In LTE, the frequency range of LTE standards requirement is 2570MHz-2620MHz, covers the combiner of the standard and 3dB electric bridges.
Invention content
It is an object of the invention to overcome disadvantages described above, a kind of same frequency combiner is provided.
To achieve the above object, concrete scheme of the invention is as follows:A kind of same frequency combiner:Include can and set
In the 3dB electric bridges in can, the 3dB electric bridges include synusia and the lower synusia being arranged in parallel with upper synusia, upper synusia
Pad is equipped with dielectric between lower synusia;
Upper synusia includes 14 side sub-pieces of upper strata that two arranged side by side, that size shape is identical, each upper strata 14
Side sub-pieces includes the first arm there are two obtuse triangle, the second arm of a rectangle, two trapezoidal third arms;Two first
The obtuse angle of arm outwardly, the obtuse angle of two the first arms be connected respectively with two short sides of the second arm to base, two third arms
Long base be connected respectively with two long short sides of the second arm, the short base of two third arms outwardly, the obtuse angle of two the first arms
It is identical with the bond length of the second arm to base;The first connect band of shape of chinese word Ji is further included, two of the first connect band are perpendicular
Arm is located between two 14 side sub-pieces of layer, the both ends of the first connect band respectively with the lower section of two 14 side sub-pieces of upper strata the
The short base of three arms is connected;The both sides of second arm of 14 side sub-pieces of each upper strata are equipped with two groups of adjustment of the setting that is centrosymmetric
Slot structure, each three bar groove enclosing region of the first adjustment slot and the first adjustment slot for adjusting slot structure and including a Π shape
The rectangle second adjustment slot inside opened up, the opening of the first adjustment slot is towards the obtuse angle side of adjacent first arm;The center of second arm
If there are one circular coupling slots;Second arm of one 14 side sub-pieces of upper strata, the side on base extends downwardly out L-shaped
First input arm, the cross bar of the first input arm is outwardly;Second arm of another 14 side sub-pieces of upper strata, the side on base are downward
Extending has the first output arm of L-shaped, and the cross bar of the first output arm is outwardly;
Lower synusia includes 14 side sub-pieces of lower floor that two arranged side by side, that size shape is identical, each lower floor 14
Side sub-pieces includes the 4th arm there are two obtuse triangle, the 5th arm of a rectangle, two the 6th trapezoidal arms;Two the 4th
The obtuse angle of arm outwardly, the obtuse angle of two the 4th arms be connected respectively with two short sides of the 5th arm to base, two the 6th arms
Long base be connected respectively with two long short sides of the 5th arm, the short base of two the 6th arms outwardly, the obtuse angle of two third arms
It is identical with the bond length of the 5th arm to base;Further include the second connect band of Π shapes, the both ends difference of the second connect band
It is connected with the short base of the 6th arm of the top of Liang Ge lower floors 14 side sub-pieces;The two of 5th arm of 14 side sub-pieces of each lower floor
Side is equipped with third adjustment tank corresponding with the second adjustment slot of 14 sub-pieces of upper strata;The center of 14 side sub-pieces of each lower floor is upward
Extending has auxiliary resonance column, and the top surface of auxiliary resonance column is equipped with resonance plate, and resonance plate is located in coupling slot;One lower floor 14
5th arm of side sub-pieces, the side of top margin extend upward the second input arm of L-shaped, and the cross bar of the second input arm is outwardly;
5th arm of another 14 side sub-pieces of lower floor, the side of top margin extend upward the second output arm of L-shaped, the second output
The cross bar of arm is outwardly.
Wherein, the upper strata 14 sub-pieces size when sub-pieces is with lower floor 14 is identical.
Wherein, extend on the side of the coupling slot to center there are two resonant rod, be recessed inwardly on resonance plate there are two
Humorous groove corresponding with resonant rod.
Wherein, the diameter of the resonance plate is less than the diameter of coupling slot.
Wherein, the thickness of the resonance plate is identical with the thickness of 14 sub-pieces of upper strata.
Wherein, the height of the auxiliary resonant column is identical with the thickness of dielectric.
Wherein, the size of first arm and the 4th arm is identical, and is isosceles triangle.
Wherein, the third arm and the 6th arm size are identical, and are isosceles trapezoid.
Wherein, the second adjustment slot with third adjustment tank size it is identical.
Beneficial effects of the present invention are:Its design frequency includes the 2700Mhz of LTE, can be obtained by Computer Simulation,
Its achievable preferable coupling effect in frequency 0.7Ghz to 2.8Ghz of this electric bridge.
Description of the drawings
Fig. 1 is the vertical view of the present invention;
Fig. 2 is the exploded perspective figure of the 3dB electric bridges of the present invention;
Fig. 3 is the upper synusia stereogram of the present invention;
Fig. 4 is the vertical view of the upper synusia of the present invention;
Fig. 5 is the lower synusia stereogram of the present invention;
Fig. 6 is the vertical view of the lower synusia of the present invention;
Fig. 7 is the parameters simulation figure of the present invention;
Reference sign in Fig. 1 to Fig. 7:
A- cans;
The upper synusia of 1-;The first input arm of 101-;The first output arms of 102-;The first arms of 11-;The second arms of 12-;13- third arms;
The first connect bands of 14-;15- coupling slots;16- resonant rods;17- the first adjustment slots;18- second adjustment slots;
Synusia under 2-;The second input arm of 201-;The second output arms of 202-;The 4th arms of 21-;The 5th arms of 22-;The 6th arms of 23-;
24- third adjustment tanks;25- resonance plates;The humorous grooves of 26-;The second connect bands of 27-;28- auxiliary resonance columns;
3- dielectrics.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments, is not the reality the present invention
It applies range and is confined to this.
As shown in Figures 1 to 7, a kind of same frequency combiner described in the present embodiment:Include can a and set on metal
3dB electric bridges in box a, the 3dB electric bridges include synusia 1 and the lower synusia 2 being arranged in parallel with upper synusia 1, upper 1 He of synusia
Pad is equipped with dielectric 3 between lower synusia 2;
Upper synusia 1 is including there are two 14 side sub-pieces of upper strata being arranged side by side, size shape is identical, each upper stratas 14
Side sub-pieces includes the first arm 11 there are two obtuse triangle, the second arm 12 of a rectangle, two trapezoidal third arms 13;Two
The obtuse angle of a first arm 11 outwardly, the obtuse angle of two the first arms 11 to base respectively with two short side phases of the second arm 12
Even, the long base of two third arms 13 is connected respectively with two long short sides of the second arm 12, the short base court of two third arms 13
Outside, the obtuse angle of two the first arms 11 it is identical with the bond length of the second arm 12 to base;Further include shape of chinese word Ji first connects
Tape splicing 14, two vertical arm of the first connect band 14 are located between two 14 side sub-pieces of layer, the both ends difference of the first connect band 14
It is connected with the short base of the third arm 13 of the lower section of two 14 side sub-pieces of upper strata;Second arm 12 of 14 side sub-pieces of each upper strata
Both sides be equipped with the two groups of adjustment slot structures of setting of being centrosymmetric, it is each adjust slot structure and include the first of a Π shape adjust
The rectangle second adjustment slot 18 opened up in 17 3 bar groove enclosing region of whole slot 17 and the first adjustment slot, the first adjustment slot 17
It is open towards the obtuse angle side of adjacent first arm 11;The center of second arm 12 is set there are one circular coupling slot 15;One upper strata
Second arm 12 of 14 side sub-pieces, the side on base extend downwardly out the first input arm 101 of L-shaped, the first input arm 101
Cross bar outwardly;It is first defeated to extend downwardly out L-shaped for second arm 12 of another 14 side sub-pieces of upper strata, the side on base
Go out arm 102, the cross bar of the first output arm 102 is outwardly;
Lower synusia 2 is including there are two 14 side sub-pieces of lower floor being arranged side by side, size shape is identical, each lower floors 14
Side sub-pieces includes the 4th arm 21 there are two obtuse triangle, the 5th arm 22 of a rectangle, two the 6th trapezoidal arms 23;Two
The obtuse angle of a 4th arm 21 outwardly, the obtuse angle of two the 4th arms 21 to base respectively with two short side phases of the 5th arm 22
Even, the long base of two the 6th arms 23 is connected respectively with two long short sides of the 5th arm 22, the short base court of two the 6th arms 23
Outside, the obtuse angle of two third arms 13 it is identical with the bond length of the 5th arm 22 to base;Further include the second connection of Π shapes
Band 27, the short base of the both ends of the second connect band 27 respectively with the 6th arm 23 of the top of Liang Ge lower floors 14 side sub-pieces are connected;
The both sides of 5th arm 22 of 14 side sub-pieces of each lower floor are equipped with the 18 corresponding third of second adjustment slot with 14 sub-pieces of upper strata
Adjustment tank 24;The center of 14 side sub-pieces of each lower floor has extended upward auxiliary resonance column 28, the top surface of auxiliary resonance column 28
Equipped with resonance plate 25, resonance plate 25 is located in coupling slot 15;5th arm 22 of one 14 side sub-pieces of lower floor, the side of top margin
The second input arm 201 of L-shaped is extended upward, the cross bar of the second input arm 201 is outwardly;Another 14 side sub-pieces of lower floor
5th arm 22, the side of top margin extend upward the second output arm 202 of L-shaped, and the cross bar of the second output arm 202 is outwardly.
During combination, dielectric 3 is located at upper strata 14 in sub-pieces and lower floor 14 between sub-pieces, specifically positioned at third
Between 13 and the 6th arm 23 of arm.Its design frequency includes the 2700Mhz of LTE, can be obtained by Computer Simulation, this electric bridge its
Can be achieved preferable coupling effect in frequency 0.7Ghz to 2.8Ghz, upper synusia 1 and lower synusia 2 use dielectric constant for
The conductor of 2.33-2.6 or so;In Fig. 7, parameter of the coupling value in above-mentioned requirements frequency range is 3dB or so, complies fully with design
It is required that interport isolation, in 28 ± 5 dB or so, port standing-wave ratio is less than 1.3.Upper synusia 1 and lower 2 thickness of synusia are in 3.5-
4mm or so, this electric bridge load power is up to 400W.For the coupling effect for being optimal, specific size can be optimized for:
First arm 11 identical with 21 size of the 4th arm is all isosceles triangle, and two waist edges are:25mm, a length of 44mm in base;Second arm
12 is identical with the size of the 4th arm 21, short side 44mm, and long side is:87mm;Third arm 13 is identical with 23 size of the 6th arm, short bottom
While being 25mm, long base is 46mm, a height of:18mm;The line width of first connect band 14 is 4mm, and longitudinal arm lengths are 80mm, laterally
Long-armed length be:60mm, other are required;The line width of the first adjustment slot 17 is:3mm, translot length and pod length phase
It is same to be:18mm, second adjustment slot 18 and third adjustment tank 24 are square, and size is identical, length of side 10mm;Coupling slot 15
It is a diameter of:32mm.First input arm 101 and 102 line width of the first output arm are 2mm, and length does not require.The height of resonant column is
25mm, diameter are less than the diameter of resonance plate 25, the 15mm of the diameter of resonance plate 25.
In the present embodiment, the upper strata 14 sub-pieces size when sub-pieces is with lower floor 14 is identical.Performance is more stablized.
In the present embodiment, extend on the side of the coupling slot 15 to center there are two resonant rod 16, on resonance plate 25 to
There are two humorous grooves 26 corresponding with resonant rod 16 for sunken inside.Return loss when can reducing to form standing wave.
In the present embodiment, the diameter of the resonance plate 25 is less than the diameter of coupling slot.In the present embodiment, the resonance plate 25
Thickness it is identical with the thickness of 14 sub-pieces of upper strata.It is 3.8mm, in the present embodiment, the height of the auxiliary resonant column and insulation
The thickness of medium 3 is identical.Difficulty is coupled caused by reducing excessive gap.In the present embodiment, 11 and the 4th arm of the first arm
21 size is identical, and is isosceles triangle.In the present embodiment, the third arm 13 is identical with 23 size of the 6th arm, and
For isosceles trapezoid.In the present embodiment, the second adjustment slot 18 with 24 size of third adjustment tank it is identical.Features described above is to carry
Coupling effect is risen, stablizes the effect of interport isolation.
The above is only the preferred embodiment of the present invention, therefore all structures described according to present patent application range
It makes, the equivalent change or modification that feature and principle are done, in the protection domain of present patent application.