CN103247426B - The distributed on-chip transformer that a kind of eight roads are full symmetric - Google Patents
The distributed on-chip transformer that a kind of eight roads are full symmetric Download PDFInfo
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- CN103247426B CN103247426B CN201310223109.7A CN201310223109A CN103247426B CN 103247426 B CN103247426 B CN 103247426B CN 201310223109 A CN201310223109 A CN 201310223109A CN 103247426 B CN103247426 B CN 103247426B
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Abstract
The invention discloses the distributed on-chip transformer that a kind of eight roads are full symmetric, mainly solve present in prior art owing to each port of on-chip transformer is uneven, make it be used as to there will be during impedance transformation the impedance of each port difference relatively big, can cause, during as power combing with distribution, the problem that power attenuation is bigger.The distributed on-chip transformer that these a kind of eight roads are full symmetric, including symmetrical along x-axis, y-axis and be provided with primary coil of eight road signal ports and symmetrical along x-axis, y-axis and be provided with the secondary coil of two paths of signals port, connecting between the signal port two-by-two being connected on described primary coil and have equal-sized inductance, position symmetrical with two paths of signals port center on described secondary coil is provided with the bonding jumper of a pair suspension.By such scheme, invention achieves each port and mutually balance, it is adaptable to the purpose of the operations such as the distribution of power combing, power and impedance transformation, there is the highest practical value and promotional value.
Description
Technical field
The present invention relates to a kind of transformator, specifically, relate to that a kind of eight roads are full symmetric distributed
Upper transformator.
Background technology
It is known that owing to on-chip transformer is capable of impedance transformation, power combing and power distribution, and
Having that insertion loss is little, area is little, can realize the plurality of advantages such as multichannel power combing and distribution, it is being penetrated
Frequently, the field such as microwave&millimeter-wave IC plays important role.
Existing on-chip transformer uses structure as shown in Figure 1, i.e. secondary coil shape and primary coil one mostly
Cause.Although the on-chip transformer of this traditional structure is capable of impedance transformation, power combing distributes with power,
But the injustice of each port of transformator is result in due to the unsymmetry of this this body structure of on-chip transformer
Weighing apparatus property is extremely serious, and this is mainly manifested in, and the impedance that there will be each port during as impedance transformation differs relatively
Greatly, power attenuation can be caused as power combing bigger with when distributing.
Summary of the invention
It is an object of the invention to provide the distributed on-chip transformer that a kind of eight roads are full symmetric, mainly solve
Due to each port imbalance of on-chip transformer present in prior art so that it is used as meeting during impedance transformation
Occur that the impedance difference of each port is relatively big, during as power combing with distribution, power attenuation can be caused bigger
Problem.
To achieve these goals, the technical solution used in the present invention is as follows:
Including symmetrical along x-axis, y-axis and be provided with eight road signal ports primary coil and by two-way parallel connection crossed loops around
For secondary coil that is that constitute along the coil of x-axis, y-axis symmetrical structure and that be provided with two paths of signals port, described former line
Connect between the signal port two-by-two being connected on circle and have equal-sized inductance, with two paths of signals on described secondary coil
The position of port center symmetry is provided with the bonding jumper of a pair suspension；
Described primary coil include being sequentially arranged and all respectively set at two ends a signal port first group of primary coil,
Second group of primary coil, the 3rd group of primary coil, the 4th group of primary coil；
The first via coil of secondary coil is entered the center of primary coil by first via signal port, with terminal even
Wiring extends to the middle part of first group of primary coil after the center of primary coil intersects to outside, extends to
One end of first group of primary coil, then arrives second group of primary coil one end, extends after intersecting with the second map
To the other end of second group of primary coil, then arrive the 3rd group of primary coil one end, extend to the 3rd group former
The other end of coil, then arrives the 4th group of primary coil one end, extends to the 4th after intersecting with the second map
The other end of group primary coil, then arrives the other end of first group of primary coil, extends to first group of former line
The middle part of circle is then return to the center of primary coil, is the terminal of first via coil herein, this first route
Enclose and continue to extend to arrange the second road signal end with first via signal port with the position that Y-axis is symmetrical from destination county
Mouthful, described terminal connecting line is the line that the terminal of the terminal of first via coil and the second map is connected.
In order to improve the balance of the present invention, the bonding jumper of described suspension and two paths of signals port on secondary coil
Bonding jumper is symmetrical along x-axis, y-axis.
In view of actual demand, described primary coil is provided with virtual earth point, and this virtual earth point is provided with for carrying out straight
The distributing point of stream electricity feed-in.
In view of the convenience for DC feedback, described primary coil Shang Mei road signal is equipped with virtual earth point, each void
Place is respectively arranged with centre cap.
Compared with prior art, the method have the advantages that
(1) primary coil and the secondary coil of transformator are disposed as symmetrical structure by the present invention, and at secondary coil
The plane of symmetry of two paths of signals port is provided with the bonding jumper of a pair and the suspension of its electricity symmetrical configuration, by this kind
The setting of full symmetric structure is effectively increased the balance of each port of transformator so that the present invention is used for merit
During the operations such as rate synthesis, power distribution and impedance transformation, there is less loss, have more in actual applications
Excellent effect.
(2) thinking limitation that during the present invention breaches Traditional Thinking, secondary coil shape should be consistent with primary coil, will
Secondary coil be transformed to two circle parallel connection crossed loopss around symmetrical structure, thus effectively reduce difference mode signal in work
It is converted into the ratio of common-mode signal, is substantially improved the balance of each port of transformator of knowing clearly, and then makes this
Invention each port when as impedance transformation has preferable impedance concordance, as power combing and power
There is during distribution higher efficiency, there is prominent substantive distinguishing features and marked improvement, be suitable for large-scale promotion
Application.
Accompanying drawing explanation
Fig. 1 is the floor map of distribution transformer in prior art.
Fig. 2 is the floor map of the present invention.
Fig. 3 is the circuit theory diagrams of the present invention.
In above-mentioned accompanying drawing, component names corresponding to reference is as follows:
1-primary coil, 2-secondary coil, 3-secondary coil signal port, the bonding jumper that 4-suspends.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings, embodiments of the present invention include but
It is not limited to the following example.
Embodiment
In order to solve present in prior art owing to each port of on-chip transformer is uneven so that it is used as
The impedance difference that there will be each port during impedance transformation is relatively big, can cause merit during as power combing with distribution
The rate bigger problem of loss, as shown in Figure 2 and Figure 3, the invention discloses and a kind of can synthesize the eight of eight road signals
The distributed on-chip transformer that road is full symmetric, it includes primary coil 1, secondary coil 2, secondary coil signal port
3 use upper and lower manifold type structure with the bonding jumper 4 suspended, this on-chip transformer, and primary coil is a circle, total
Eight road signal ports, secondary coil be crossed loops in parallel around two circles, have two paths of signals port, at secondary coil
The plane of symmetry of two paths of signals port is provided with the bonding jumper of a pair suspension simultaneously, the bonding jumper of this suspension and signal
The bonding jumper of port is formed along x-axis, the electric structure of y-axis symmetry, and its Main Function is to improve transformator further
Balance.
According to Fig. 2 it can be seen that secondary coil by two-way parallel connection crossed loops around for along x-axis, y-axis symmetrical structure
The structure composition of coil.
According to Fig. 3 it can be seen that connect between two signal ports being connected on primary coil and have equal-sized inductance,
Crossed loops in parallel around secondary coil on primary coil opposite position at inductance use with the inductance on primary coil
Coupled modes, have the higher coefficient of coup up and down.
In order to improve to the convenience of DC feedback, at the virtual earth point minute of primary coil Shang Mei road signal in the present invention
It is not provided with centre cap, is industry known approaches owing to arranging centre cap at virtual earth point, thus the present invention
In do not make more explanation.
In order to improve overall performance further, present invention virtual earth point on primary coil is provided with to be presented for direct current
The distributing point of electricity.
Drawing after empirical tests, the present invention can realize high efficiency power combing at millimeter wave frequency band, has preferably
Balance, and the present invention is applicable to power combing, power distribution and impedance transformation etc., has higher simultaneously
Combined coefficient.
The accompanying drawing of the present embodiment only illustrates and primary coil and secondary coil is set to " square " along x-axis, y
Schematic diagram during axially symmetric structure, according to the actual requirements, it is also possible to primary coil and secondary coil are provided in round,
The structures such as octagon, if its can realize along x-axis, y-axis to find a great convenience can, due to according in the present invention
Primary coil and the set-up mode of secondary coil when appearance just can infer circle, octagon easily, thus the present invention
In do not make more explanation.
According to above-described embodiment, the present invention just can be realized well.
Claims (4)
1. the distributed on-chip transformer that a road is full symmetric, it is characterized in that, including symmetrical along x-axis, y-axis and be provided with primary coil of eight road signal ports and by two-way parallel connection crossed loops around for that constitute along the coil of x-axis, y-axis symmetrical structure and be provided with the secondary coil of two paths of signals port, connecting between the signal port two-by-two being connected on described primary coil and have equal-sized inductance, position symmetrical with two paths of signals port center on described secondary coil is provided with the bonding jumper of a pair suspension；
Described primary coil includes being sequentially arranged and all respectively set at two ends first group of primary coil of a signal port, second group of primary coil, the 3rd group of primary coil, the 4th group of primary coil；
nullThe first via coil of secondary coil is entered the center of primary coil by first via signal port，With the middle part that terminal connecting line extends to first group of primary coil after the center of primary coil intersects to outside，Extend to one end of first group of primary coil，Then second group of primary coil one end is arrived，The other end of second group of primary coil is extended to the second map after intersecting，Then the 3rd group of primary coil one end is arrived，Extend to the other end of the 3rd group of primary coil，Then the 4th group of primary coil one end is arrived，The other end of the 4th group of primary coil is extended to the second map after intersecting，Then the other end of first group of primary coil is arrived，The middle part extending to first group of primary coil is then return to the center of primary coil，It it is the terminal of first via coil herein，This first via coil continues to extend to arrange the second road signal port with first via signal port with the position that Y-axis is symmetrical from destination county，Described terminal connecting line is the line that the terminal of the terminal of first via coil and the second map is connected.
The distributed on-chip transformer that a kind of eight roads the most according to claim 1 are full symmetric, it is characterised in that the bonding jumper of described suspension and the bonding jumper of two paths of signals port on secondary coil are symmetrical along x-axis, y-axis.
The distributed on-chip transformer that a kind of eight roads the most according to claim 2 are full symmetric, it is characterised in that described primary coil is provided with virtual earth point, this virtual earth point is provided with the distributing point for carrying out unidirectional current feed-in.
The distributed on-chip transformer that a kind of eight roads the most according to claim 3 are full symmetric, it is characterised in that described primary coil Shang Mei road signal is equipped with virtual earth point, each virtual earth point is respectively arranged with centre cap.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310223109.7A CN103247426B (en) | 2013-06-06 | 2013-06-06 | The distributed on-chip transformer that a kind of eight roads are full symmetric |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310223109.7A CN103247426B (en) | 2013-06-06 | 2013-06-06 | The distributed on-chip transformer that a kind of eight roads are full symmetric |
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| Publication Number | Publication Date |
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| CN103247426A CN103247426A (en) | 2013-08-14 |
| CN103247426B true CN103247426B (en) | 2016-09-28 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112185662B (en) * | 2020-09-29 | 2021-07-23 | 桃江凤冠电机有限公司 | Eight-path fully-symmetrical distributed on-chip transformer |
| CN112491363B (en) * | 2020-11-25 | 2022-07-08 | 华东师范大学 | Multi-path signal transmission four-coil transformer for 24G radar chip signal source |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070090913A1 (en) * | 2005-10-26 | 2007-04-26 | Samsung Electronics Co., Ltd. | Multi-loop type transformer |
| CN101741326A (en) * | 2008-11-13 | 2010-06-16 | 株式会社瑞萨科技 | Rf power amplifier |
| CN102693956A (en) * | 2011-03-21 | 2012-09-26 | 联发科技股份有限公司 | Signal transforming circuit |
-
2013
- 2013-06-06 CN CN201310223109.7A patent/CN103247426B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070090913A1 (en) * | 2005-10-26 | 2007-04-26 | Samsung Electronics Co., Ltd. | Multi-loop type transformer |
| CN101741326A (en) * | 2008-11-13 | 2010-06-16 | 株式会社瑞萨科技 | Rf power amplifier |
| CN102693956A (en) * | 2011-03-21 | 2012-09-26 | 联发科技股份有限公司 | Signal transforming circuit |
Non-Patent Citations (3)
| Title |
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| A 1V 17.9dBm 60Ghz Power Amplifier in Standard 65nm CMOS;Jie-Wei Lai,Alberto Valdes-Garcia;《ISSCC Dig.Tech.Papers》;20100210;424-425 * |
| A 1V 19.3dBm 79Ghz Power Amplifier in 65nm CMOS;Kun-Yin Wang,Tao-Yao Chang,Chorng-Kuang Wang;《ISSCC Dig. Tech. Papers》;20120221;260-262 * |
| A 23-dBm 60-Ghz Distributed Active Transformer in a Silicon Process Technology;Ullrich R. Pferffer,David Goren;《IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES》;20070531;第55卷(第5期);857-865 * |
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