CN206250027U - Petal-shaped concave-convex twenty-quadrilateral transformer - Google Patents
Petal-shaped concave-convex twenty-quadrilateral transformer Download PDFInfo
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- CN206250027U CN206250027U CN201621149818.0U CN201621149818U CN206250027U CN 206250027 U CN206250027 U CN 206250027U CN 201621149818 U CN201621149818 U CN 201621149818U CN 206250027 U CN206250027 U CN 206250027U
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- transformer
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- quadrangle
- petal
- wire winding
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- 238000005096 rolling process Methods 0.000 claims description 20
- 239000007769 metal material Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 abstract description 7
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- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 17
- 229910052751 metal Inorganic materials 0.000 description 17
- 239000000758 substrate Substances 0.000 description 10
- 230000008859 change Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000003071 parasitic effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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- Coils Or Transformers For Communication (AREA)
Abstract
The utility model discloses a unsmooth twenty quadrangle transformer of petal form, include by elementary wire winding and secondary wire winding mutual interval encircle the encirclement body that forms, surround the body and be unsmooth twenty quadrangle, have to eight interior angles of indent and to the sixteen external angles of evagination, be 2 between external angle and the interior angle: 1 adjacent setting, simple structure is novel, and quality factor is high, and self-resonant frequency is high, and elementary wire winding and secondary wire winding inductance value are high, only need less chip area, can provide signal and impedance conversion function in the circuit that the on-chip radio frequency meets transmitting system, can realize under multiple technology, reduce the use quantity of inductance, reduce chip area, have reached high device performance and low chip area's purpose.
Description
Technical field
The utility model is related to a kind of transformer of radio communication IC chip, belongs to integrated circuit technique neck
Domain.
Background technology
At present, transformer is applied widely in radio communication integrated circuit on-chip system.In RF IC
Emitting portion and receiving portion are required for using transformer, and transformer is real in low-noise amplifier, frequency mixer, power amplifier
Existing signal coupling and impedance conversion, while also improving its quality factor and inductance because the primary and secondary mutual inductance of coiled wire-wound coil is acted on
Value.However, when making in integrated circuits and realizing the efficient performance of transformer, its chip area need to be reduced, reduce transformer and damage
Consumption, it is ensured that signal is effectively transmitted.Accordingly, it would be desirable to improve the structure and shape of transformer, its characteristic and function are improved.
The patent document of Publication No. " US20080042792A1 " discloses the change of a kind of entitled " on-chip transformer balun "
Depressor structure, its technical scheme for using using the top-level metallic of square structure as shown in figure 1, designed, wherein primary coiling
(numbering 12) uses series system by outer ring to inner ring, then by inner ring to outer ring；Secondary rolling thread (numbering 13) is using side in parallel
Formula, so as to meet the coefficient of coup high, reduces the resistance of secondary rolling thread, and structure is simpler, is easy to extensive use.But, phase
For the ever-increasing octagon of side number, (patent document of such as Publication No. " CN102184910B " is public for non-complete convex ten hexagon
" the non-complete convex ten hexagons transformer Balun " opened) and concavo-convex 20 quadrangle of petal-shaped etc., its Q value is still relative
It is relatively low.
The content of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of high-quality-factor, and high self resonant frequency is high
Primary and secondary coil inductance, the concavo-convex 20 quadrangle transformer of the small petal-shaped of chip occupying area.
The utility model solves the technical scheme that its technical problem used：
A kind of concavo-convex 20 quadrangle transformer of petal-shaped, including by the spaced circular shape of primary coiling and secondary rolling thread
Into surrounding body, the surrounding body is 20 concavo-convex quadrangles, 16 with eight interior angles for concaving and convex
Exterior angle, is 2 between exterior angle and interior angle：1 is disposed adjacent.
The interior angle of the surrounding body and exterior angle are 135 degree.
The intersecting angle at the primary coiling and the overlapping position of secondary rolling thread is 90 degree.
The primary coiling and secondary rolling thread are same metal material.
The beneficial effects of the utility model are：The utility model increased transformation on the basis of technological design rule is considered
The side number and angle of device, the interior angle of surrounding body and exterior angle are 135 degree so that the length of primary coiling and secondary rolling thread is in area
The length of primary coiling and secondary coiling in the case of certain than traditional winding mode transformer is long, cause primary coiling with
The inductance value increase of the coil of secondary rolling thread, solve need to increase because improving the inductance value of primary coiling and secondary rolling thread around
The problem of number of wire turns, so as to save chip area, meanwhile, side number increases and is favorably improved Q value and from humorous
Vibration frequency.The intersecting angle at primary coiling and the overlapping position of secondary rolling thread is 90 degree, and the area relative area of overlapping part is smaller,
Parasitic capacitance value between corresponding coiled wire-wound coil also reduces therewith, thus also improves its self-resonant frequency, and simple structure is new
Grain husk, quality factor is high, and self-resonant frequency is high, and primary coiling and secondary rolling thread inductance value are high, it is only necessary to less chip area, can
Signal and impedance transformation function are provided in the circuit that emission system is connect with the radio frequency on the piece, can be realized under kinds of processes, subtracted
The usage quantity of few inductance, reduces chip area, has reached the purpose of device performance high and low chip area.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is on-chip transformer structural representation of the prior art；
Fig. 2 is structural representation of the present utility model；
Fig. 3 is substrate of the present utility model and metal-layer structure schematic diagram；
Fig. 4 is the self-resonant frequency performance plot of the utility model and other three kinds of transformers；
Fig. 5 is the quality factor performance plot of the utility model and other three kinds of transformers；
Fig. 6 is the Insertion Loss performance plot in the utility model and other three kinds of transformer working bands.
Specific embodiment
Reference picture 2, a kind of concavo-convex 20 quadrangle transformer of petal-shaped, including it is mutual by primary coiling and secondary rolling thread
Spacer ring around the flat thin sheet for being formed surrounding body, wherein, port 1, the port that port 2 is primary coiling, port 3, port 4 are
The port of secondary rolling thread.The surrounding body is 20 concavo-convex quadrangles, with eight interior angles for concaving and convex ten
Six exterior angles, are 2 between exterior angle and interior angle：1 is disposed adjacent, and the interior angle of the surrounding body and exterior angle are 135 degree, due to electricity
The size of sense is relevant with the length of coiling, and increases with the increase of length, and the utility model causes primary using 135 degree of angles
Primary coiling and secondary of the length of coiling and secondary rolling thread in the case where area is certain than traditional winding mode transformer
Winding length is long, causes the inductance value of the coil of primary coiling and secondary rolling thread to increase, solve because improve primary coiling and time
The inductance value of level coiling and need to increase the problem of number of turns, so as to save chip area, meanwhile, side number increases and has
Help improve quality factor Q value and self-resonant frequency.
The intersecting angle at the primary coiling and the overlapping position of secondary rolling thread is 90 degree, the area relative area of overlapping part
Smaller, the parasitic capacitance value between corresponding coiled wire-wound coil also reduces therewith, thus also improves its self-resonant frequency.
The primary and secondary coiling be same metal material, mainly based on the top-level metallic of current process, this be by
It is thicker with respect to other layer of metal thickness in top-level metallic, and electrical conductivity is also higher, its resistance under straight, exchange status is also relative
It is smaller, with substrate distance farther out, be conducive to improving the Q value of transformer and reduce insertion loss.Primary coiling and time
From time high level metal, the thickness relative to top-level metallic is somewhat reduced metal cross section, this layout side between level coiling
Formula is conducive to improving the characterisitic parameter required by transformer, and reduction is unfavorable for the part of its performance, in particular by top-level metallic
Wiring can improve the distance between metal wound wire and substrate, reduce transformer to substrate effect, reduce parasitic capacitance.
Substrate of the present utility model and metal-layer structure as shown in figure 3, be followed successively by top-level metallic B, sublevel gold from top to bottom
Category C, third layer metal D, the 4th layer of metal E, layer 5 metal G, layer 6 metal G and substrate layer H, wherein, top-level metallic B is thick
Degree is most thick, next to that sublevel metal C, the metal thickness of rear each layer is equal since third layer metal D.According under high frequency condition
Electric current flows through Kelvin effect occurs in the conductor, thus selects the thicker top-level metallic of thickness and is more beneficial for making transformer
Its electrology characteristic physically.Through hole A1, through hole A2 and through hole A3 be respectively between top-level metallic B and secondary high-rise metal C, secondary high
Connection between layer metal C and third layer metal D and between third layer metal D and the 4th layer of metal E, so as to realize coiling
Metal intersects the connection for avoiding short-circuiting percentage, and the physics realization effect for having reached, the thickness and doping concentration of substrate layer H will influence
The performance of transformer, for the thick substrate of the effect selection for reaching design of transformer, the substrate doping of low concentration.
Transformer parameter of the present utility model is calculated as follows：
If the inductance of the primary coil of transformer is L11, secondary inductance is L22, then：
Lii=imag (Zii)/(2*π*f)
The quality factor of primary coil and secondary coil is respectively Q11, Q22, then：
Wherein, i=1,2, Z, Y be not Wei coil port impedance and admittance.
The calculation expression of the self-resonant frequency of unilateral coil is as follows：
Wherein, k is the coefficient of coup, and R and L is unilateral coil resistance and inductance, CoxIt is the oxidation layer capacitance between substrate.
The expression formula of coil degree of coupling is：
Wherein, Z11、Z22Input, output port impedance for transformer coil；Z12、Z21It is the input, defeated of transformer coil
Mutual impedance between exit port, related other parameters can be calculated according to related documents and materials.
The utility model transformer performance characteristic as shown in Figs. 4-6 (ADS simulation softwares, the sectional drawing in version number 2009),
In the case of primary coiling and secondary rolling thread inductance value and turn ratio identical, from fig. 4, it can be seen that transformer of the present utility model
Self-resonant frequency highest, reaches 13.68GHz, the self-resonant frequency application for being conducive to transformer in frequency range wider high.From figure
5 as can be seen that transformer quality factor highest of the present utility model, reaches 21.11, and the performance of primary coiling and secondary rolling thread is
Consistent.From fig. 6, it can be seen that three kinds of transformers of transformer of the present utility model and other are several in the performance of Insertion Loss aspect of performance
Identical, change is not it is obvious that showing that this several transformer can meet design requirement in performance indications.
Transformer device structure of the present utility model is simply novel, and quality factor is high, and self-resonant frequency is high, primary coiling and secondary
Wire-wound inductor value is high, it is only necessary to less chip area, can be provided in radio frequency on piece connects the circuit of emission system signal and
Impedance transformation function, can realize under kinds of processes, reduce the usage quantity of inductance, reduce chip area, reach device high
The purpose of part performance and low chip area.
It is emphasized that the embodiment of the above can not limit the protection domain of the invention, the present invention is not being departed from
Create general idea in the case of, the personnel of professional skill field can carry out various change and remodeling, as long as these change and
The objective retrofited without departing from the invention, still falls within the scope of the invention covers.
Claims (4)
1. the concavo-convex 20 quadrangle transformer of a kind of petal-shaped, including it is spaced around being formed by primary coiling and secondary rolling thread
Surrounding body, it is characterised in that：The surrounding body is 20 concavo-convex quadrangles, with eight interior angles for concaving and convex
16 exterior angles, 2 are between exterior angle and interior angle：1 is disposed adjacent.
2. the concavo-convex 20 quadrangle transformer of petal-shaped according to claim 1, it is characterised in that：The surrounding body it is interior
Angle and exterior angle are 135 degree.
3. the concavo-convex 20 quadrangle transformer of petal-shaped according to claim 1 and 2, it is characterised in that：It is described it is primary around
The intersecting angle at line and the overlapping position of secondary rolling thread is 90 degree.
4. the concavo-convex 20 quadrangle transformer of petal-shaped according to claim 1, it is characterised in that：The primary coiling and
Secondary rolling thread is same metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621149818.0U CN206250027U (en) | 2016-10-24 | 2016-10-24 | Petal-shaped concave-convex twenty-quadrilateral transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621149818.0U CN206250027U (en) | 2016-10-24 | 2016-10-24 | Petal-shaped concave-convex twenty-quadrilateral transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206250027U true CN206250027U (en) | 2017-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621149818.0U Expired - Fee Related CN206250027U (en) | 2016-10-24 | 2016-10-24 | Petal-shaped concave-convex twenty-quadrilateral transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373739A (en) * | 2016-10-24 | 2017-02-01 | 电子科技大学中山学院 | Petal-shaped concave-convex twenty-quadrilateral transformer |
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2016
- 2016-10-24 CN CN201621149818.0U patent/CN206250027U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373739A (en) * | 2016-10-24 | 2017-02-01 | 电子科技大学中山学院 | Petal-shaped concave-convex twenty-quadrilateral transformer |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170613 Termination date: 20171024 |