CN103378394A - Transformer-based directional coupler - Google Patents
Transformer-based directional coupler Download PDFInfo
- Publication number
- CN103378394A CN103378394A CN201210114033XA CN201210114033A CN103378394A CN 103378394 A CN103378394 A CN 103378394A CN 201210114033X A CN201210114033X A CN 201210114033XA CN 201210114033 A CN201210114033 A CN 201210114033A CN 103378394 A CN103378394 A CN 103378394A
- Authority
- CN
- China
- Prior art keywords
- coil
- directional coupler
- transformer
- isolation
- sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Coils Or Transformers For Communication (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
The invention provides a transformer-based directional coupler. The transformer-based directional coupler comprises a first coil, a second coil, two adjustable capacitors and two crossover capacitors, wherein both ends of the first coil respectively serve as an input end and a shoot-through end; the second coil, together with the first coil, forms a transformer structure, and both ends of the second coil respectively serve as a coupling end and an isolation end; one of the adjustable capacitors is connected with the input end of the shoot-through end, and the other one of the adjustable capacitors are connected with the coupling end and the isolation end; and one of the crossover capacitors is connected with the shoot-through end and the coupling end, and the other one of the crossover capacitors is connected with the input end of the isolation end. The transformer-based directional coupler can be applied to multiple application occasions and process environments, and especially can be applied to on-chip integration by using the CMOS technology, thereby substantially reducing complexity of the system design and effectively improving performance of the system.
Description
Technical field
The invention belongs to the RF/Microwave technical field of integrated circuits, relate to a kind of directional coupler, particularly a kind of directional coupler based on transformer.
Background technology
Directional coupler (Directional Coupler) is a kind of widely used RF/Microwave parts, and is widely used in up link and down link is in the transceiver system of same frequency range.The principle that directional coupler is applied to transceiver system as shown in Figure 1, " input " (Input) connects transmitter output (TX), " the straight-through end " (Direct) connects antenna (Antenna), " coupled end " (Coupled) connects receiver inlet (RX), and " isolation end " (Isolated) connects build-out resistor (Res).Wherein input is " insertion loss " (Insertion Loss) to the loss between the straight-through end, input to the loss of coupled end be " degree of coupling " (Coupling), straight-through end to the loss of coupled end be " isolation " (Isolation), the difference of " isolation " and " degree of coupling " be " directivity " (Directivity).4 port networks (shown in Fig. 1 the right) for a directional coupler, S parameter S 12 has represented the insertion loss of transmitter to antenna, this value must be as far as possible little, even because a less insertion loss increase also can cause greatly reducing of transmitter power efficiency.S13 has represented the degree of coupling of antenna to receiver.S23 has represented the isolation of transmitted from transmitter to receiver, and this value must be large as far as possible, because the isolation that does not meet the demands can cause very large signal of transmitter leaakage to receiver, causes the reduction of receiver performance and the increase of design difficulty.Directional coupler to the requirement of performance is: insertion loss is very little, and the degree of coupling is not very large, and isolation is very large, i.e. high directivity.
For a same frequently receive-transmit system, general transmit signal energy is very strong and can be coupled to receiver inlet greatly, and it is very weak to receive signal, if do not use directional coupler, very strong output coupled signal can block useful reception signal, can cause like this receiver to work, shown in Fig. 2 (a); After using directional coupler, receive signal because the relation of the degree of coupling is lost a part, be coupled to simultaneously transmitting of input and greatly decayed, thereby can guarantee simultaneously with the frequently normal operation of transceiver, shown in Fig. 2 (b).
For traditional directional coupler, adopting ceramic passive component is the most widely used method, but the restriction of its volume and higher cost have hindered its application in highly integrated and low-power consumption environment.Document " A passive circulator with high isolation using a directional coupler for RFID; in IEEE MTT-S Int.Microw.Symp.Dig.Papers; pp.1177-1180; Jun.2006 " discloses the parallel coupling quarter-wave microstrip line directional coupler on a kind of PCB, have preferably isolation, but its length far can not satisfy integrated requirement.Document " A CMOS power amplifier with integrated passive-device spiral-shaped directional coupler for mobile UHF RFID reader; IEEE Trans.Microw.Theory and Tech.; vol.59; no.11; pp.2888-2897; Nov.2011 " discloses a kind of spiral orientation coupler of employing IPD (integrated passive device) technique, but itself and CMOS transceiver system need to use the system in package technology to encapsulate, and this has improved the complexity of system and has increased cost.Document " A compact highly reconfigurable CMOS MMIC directional coupler; IEEE Trans.Microw.Theory Tech.; vol.56; no.2; pp.305-319; Feb.2008 " discloses a kind of active C MOS directional coupler based on lump LC element, yet active device will need extra power consumption, and lamped element also will take a large amount of areas.
In the prior art, also not applicable to the equal minimum directional coupler of more excellent, area of types of applications environment and process conditions, isolation and insertion loss, particularly based on the transformer concept and can be used for integrated passive directional couplers on the CMOS technique sheet.
Summary of the invention
The purpose of this invention is to provide a kind of directional coupler based on transformer, its theoretical model can be used for various application occasions and process environments, it is integrated particularly can to adopt CMOS technique to carry out on the sheet, greatly reduces the complexity of system, but and the performance of Effective Raise system.
Its basic principle of directional coupler proposed by the invention is a kind of passive transformer of special construction.As shown in Figure 3, directional coupler of the present invention comprises coil Lp and the Ls of two couplings, consists of transformer device structure.As input and straight-through end, the two ends of coil Ls are respectively as coupled end and isolation end respectively at the two ends of coil Lp.Be provided with tunable capacitor array Cp between input and the straight-through end, be used for frequency tuning; Be provided with tunable capacitor array Cs between coupled end and the isolation end, it is tuning to be used for isolation.Cc1 and Cc2 are two flying capcitors, wherein Cc1 butt coupling end and described straight-through end, and Cc2 connects input and described isolation end.Cc1 and Cc2 are used for this transformer device structure to realize its directional couple isolation characteristic.During the directional coupler real work, at the isolation end node, by the electric current I of capacitor C c2
1, by the electric current I of coil Ls
2, and the electric current I of passing through capacitor C s
3Cancel out each other, so that the voltage of isolation end is close to zero, thereby obtain needed high-isolation, reach the effect of directional couple.
Specifically, the present invention adopts following technical scheme:
A kind of directional coupler based on transformer, it comprises:
The first coil, its two ends are respectively as input and straight-through end;
The second coil consists of transformer device structure with described the first coil, and its two ends are respectively as coupled end and isolation end;
Two tunable capacitors, one connect described input and described straight-through end, and another connects described coupled end and described isolation end; And
Two flying capcitors, one connect described straight-through end and described coupled end, and another connects described input and described isolation end.
The mode that above-mentioned directional coupler based on transformer can adopt planar technique, PCB metal line technique or sheet external component to build realizes.The below further specifies the structure of this directional coupler for different implementations:
1) the employing planar technique is made or is made above-mentioned directional coupler at pcb board:
Planar technique comprises CMOS technique, BiCMOS technique etc.On the substrate plane of planar technique or the multi-layer PCB board metal level make two the mutually wire coil of coupling, i.e. described the first coil and described the second coils.The relative position of two coils can be in vertical direction lower placement, also can be mutually around placement on same layer.Be when arranging up and down, can be positioned at the upper strata by the first coil, the second coil is positioned at lower floor, also can be positioned at lower floor by the first coil, and the second coil is positioned at the upper strata.
In this directional coupler, two coils are when arranging up and down, between two coils covering can be arranged, and also can cover without crossing.The metal live width of coil can be greater than or equal to or less than metal wire separation.The shape of coil includes but not limited to circle, ellipse, polygon.The winding mode of coil includes but not limited to: with one heart multi-turn coiling, parallel coiling, intersection coiling, center convolution coiling.
In this directional coupler, two tunable capacitor arrays can adopt in the sheet electric capacity or the outer electric capacity of sheet to realize, the tunable capacitor of two cross-over connections can adopt in the sheet electric capacity, the sheet dispatch from foreign news agency parasitic capacitance that perhaps is coupled to realize.
2) mode that adopts the sheet external component to build is made above-mentioned directional coupler:
When adopting the sheet external component to build, can adopt the outer transformer of a slice, its primary coil and secondary coil are respectively as the first coil and the second coil.Two tunable capacitors and two flying capcitors can adopt the outer various types of electric capacity of sheet.
Advantage of the present invention and good effect are as follows:
1) applied widely: this directional coupler based on transformer has been realized on the sheet of CMOS technique integrated first.And during the directional coupler design that can be widely used in various occasions uses, comprise and adopt the sheet external component to build and adopt all kinds of planar techniques or make at pcb board.Capacitor C p, Cs can realize by patch capacitor, perhaps realize by integrated technique.Flying capcitor Cc1, Cc2 can realize by the outer electric capacity of sheet, perhaps by realizing in the integrated technique sheet, perhaps realize by the coupling parasitic capacitance between the wire coil;
2) directionality is good: the present invention has creatively proposed directional coupler principle and the relevant design based on transformer, by the effect of flying capcitor Cc1, Cc2, so that the node voltage of isolation end is close to zero, obtains high isolation characteristic.And frequency tuning and isolation tunning effect by capacitor C p, Cs, isolation significantly increases, and directionality is good;
3) insertion loss is little: owing to adopt three-dimensional loop construction, upper coil over the ground parasitic capacitance is little, when build-out resistor ground connection that the isolation end with inner coil connects, a upper coil over the ground parasitic capacitance part is shielded by inner coil, so that insertion loss is very little;
4) area is little: planar CMOS technique or BiCMOS technique are integrated on sheet owing to utilizing, and adopt three-dimensional loop construction, are reaching under the identical orientation index, metal wire separation can be less, the directional coupler overall structure is compacter, and area is less, and cost is lower.When making on adopting pcb board, its area also will be far smaller than traditional structure;
5) tuning performance is strong: generally speaking, directional coupler is according to designing in the good situation of output matching of power amplifier, yet the transmitter power amplifier output matching in the reality is relatively poor, and the power output variation can cause output matching of power amplifier to change, so that the actual serviceability of directional coupler and design load have deviation.Except the problems referred to above, the factors such as technological fluctuation, variations in temperature also can cause the deterioration of directional coupler performance.In order to address the above problem, between input and the straight-through end tunable capacitor array Cp is arranged, realize frequency tuning; Between coupled end and the isolation end tunable capacitor array Cs arranged, realize that isolation is tuning.
Description of drawings
Fig. 1 is directional coupler schematic diagram and the four port network schematic diagrames of general transceiver system;
Fig. 2 is the schematic diagram that directional coupler suppresses to receive signal; Wherein (a) is the schematic diagram that receiver receives signal when not using directional coupler, and receiver receives the schematic diagram of signal during (b) for the use directional coupler;
Fig. 3 is based on the schematic diagram of the directional coupler of transformer in the embodiment of the invention;
Fig. 4 is based on the domain vertical view of the different layers metal level integrated directional coupler of planar technique in the embodiment of the invention;
Fig. 5 is the profile of Fig. 4 middle section 1;
Fig. 6 is based on the domain vertical view of the same metal layer integrated directional coupler of planar technique in the embodiment of the invention;
Fig. 7 is the profile of Fig. 6 middle section 2;
Fig. 8 is the performance schematic diagram of directional coupler in the embodiment of the invention;
Fig. 9 is the various coil-winding mode schematic diagrames of the embodiment of the invention;
Figure 10 is the connected mode schematic diagram of the transceiver system of the embodiment of the invention.
Embodiment
Below by embodiment also by reference to the accompanying drawings, the present invention is described in detail.
The directional coupler based on transformer of present embodiment realizes that at standard CMOS process or BiCMOS technique Fig. 3 is the schematic diagram of this directional coupler.As shown in the drawing, this directional coupler comprises coil Lp and the Ls of two couplings, and as input and straight-through end, the two ends of coil Ls are respectively as coupled end and isolation end respectively at the two ends of coil Lp.Be provided with tunable capacitor array Cp between input and the straight-through end, be used for frequency tuning; Be provided with tunable capacitor array Cs between coupled end and the isolation end, it is tuning to be used for isolation.Cp and Cs can make directional coupler obtain optimum performance under the application conditions of different input impedance or technique, variations in temperature.Cc1 and Cc2 are two flying capcitors, wherein Cc1 butt coupling end and described straight-through end, and Cc2 connects input and described isolation end.Cc1 and Cc2 are used for this transformer device structure to realize its directional couple isolation characteristic.During the directional coupler real work, at the isolation end node, by the electric current I of capacitor C c2
1, by the electric current I of coil Ls
2, and the electric current I of passing through capacitor C s
3Cancel out each other, so that the voltage of isolation end is close to zero, thereby obtain needed high-isolation, reach the effect of directional couple.
In this directional coupler, two coils are concentric multi-turn structure, the cross section cross-over connection of two adjacent rings, and two coils are positioned at layer or different layers, are staggered and arrange, and are extremely shown in Figure 7 such as Fig. 4.
As shown in Figure 4, it is the directional coupler that two coils adopt the different layers metal level to make, this directional coupler comprises upper coil (solid line represents) and inner coil (dotted line represents), and each circle of upper coil and each circle of inner coil be staggered stereochemical structure up and down.The effect of two coils can equivalence be transformer coil.The structure of Fig. 4 a is rectangle, leads directly to end, input two-port and coupled end, isolation end two-port at an angle of 90, and wire circle is 3.The structure of Fig. 4 b is octagon, and straight-through end, input two-port become 0 ° of angle with coupled end, isolation end two-port, and wire circle is 2.In other embodiments of the invention, coil shape can be any coil shapes that can adopt planar technique to make such as rectangle, any limit polygon, circle, ellipse.The two ends of upper coil as input and straight-through end, are provided with tunable capacitor array Cp respectively between these two ends, be used for frequency tuning.The two ends of inner coil are provided with tunable capacitor array Cs respectively as coupled end and isolation end between these two ends, it is tuning to be used for isolation.Angle can be 0 degree, 90 degree, 180 degree, and the angle supported of technique arbitrarily between the coupled end that the straight-through end that Cp connects, input two ports are connected with Cs, isolation end two ports take hub of a spool as initial point; Wire circle can be taked any number of turns according to application demand.Above parameter can change and all can realize basic function.Capacitor C p, Cs can adopt in the sheet electric capacity or the outer electric capacity of sheet to realize, the capacitor C c1 of two cross-over connections, Cc2 (not shown among Fig. 4) can adopt in the sheet electric capacity, the sheet dispatch from foreign news agency parasitic capacitance that perhaps is coupled to realize.
In Fig. 4, upper coil can be by M layer metal coiled, and cross section is connected by M-1 layer or M+1 layer metal; Inner coil can be by N layer metal coiled, and cross section is connected by N-1 layer or N+1 layer metal, N 〉=1 wherein, and M 〉=1, N＜M, N, M are positive integer.Draw the two ends of coil in outmost turns (also can be innermost circle).Upper coil and inner coil function can be intercoursed, and namely the first coil and the second coil all can be positioned at upper strata or lower floor.
Fig. 5 is the schematic diagram in the cross section 1 of directional coupler among Fig. 4.Each circle of two coils is up and down staggered stereochemical structure.The upper/lower layer metallic line had covering 0, and the metal live width is W, and metal wire separation is S, and D1 is minimum diameter, and D2 is maximum outside diameter, and H is the spacing of levels coil, and h is that inner coil is to the spacing of substrate.In different embodiment, cross covering size 0 and can be arbitrary value, also can cover without crossing.The metal live width of the first coil can greater than, be equal to or less than the metal wire separation of the second coil.Metal live width W, metal wire separation S, minimum diameter D1, maximum outside diameter D2 all desirable arbitrary value to obtain effect of optimization.Levels coil-span H, inner coil all can change with the use of different metal layer to substrate spacing h.
Fig. 6 is the directional coupler that the first coil and the second coil all adopt the identical layer metal level to make.The first coil and the second coil effect equivalence are transformer coil.The structure of Fig. 6 is rectangle, and straight-through end, input two-port become 180 ° of angles with coupled end, isolation end two-port, and wire circle is 2.In other embodiments of the invention, coil shape can be any coil shapes that can adopt planar technique to make such as rectangle, any limit polygon, circle, ellipse.Angle can be 0 degree, 90 degree, 180 degree, and the angle supported of technique arbitrarily between the coupled end that the straight-through end that Cp connects, input two ports are connected with Cs, isolation end two ports take hub of a spool as initial point; Wire circle can be taked any number of turns according to application demand.But equal practical function.
As shown in Figure 6, this directional coupler comprises an outer coil (solid line represents) and an inner coil (chain-dotted line represents).The first coil and the second coil all can be used as outer ring or inner ring.The outer coil of this directional coupler and inner coil can be by M layer metal coileds, and cross section connects (M 〉=1) by M-1 layer, M-2 layer or M+1 layer, M+2 layer metal.Draw the two ends of coil in the outmost turns (also can be innermost circle) of outer coil and inner coil.The two ends of outer coil are provided with the outer electric capacity Cp of tunable capacitor array or sheet respectively as input and straight-through end between these two ends, be used for frequency tuning.The two ends of inner coil are provided with the outer electric capacity Cs of tunable capacitor array or sheet respectively as coupled end and isolation end between these two ends, it is tuning to be used for isolation.Outer coil and inner coil function can be intercoursed.Flying capcitor Cc1 and Cc2 realize by the parasitic capacitance that adjacent inner layer and the coupling of outer layer metal coil level produce.In other embodiments of the invention, capacitor C p, Cs also can adopt the outer electric capacity of sheet to realize.Flying capcitor Cc1, Cc2 also can adopt the sheet dispatch from foreign news agency to hold or the interior capacitor array of sheet is realized.
Fig. 7 is the schematic diagram in directional coupler cross section 2 among Fig. 6.Each circle of outer coil and inner coil respectively enclose interphase distribution, are planar structure.The metal live width is W, and metal wire separation is S, and D1 is minimum diameter, and D2 is maximum outside diameter, and h is that the metal level coil is to the spacing of substrate.Metal live width W, metal wire separation S, minimum diameter D1, maximum outside diameter D2 all desirable arbitrary value to obtain effect of optimization.Coil all can change with the use of different metal layer to substrate spacing h.
In above-mentioned directional coupler, the spacing of the shape by changing coil, the number of turns, radius (minimum diameter, maximum outside diameter), levels coil, with the spacing between the layer metal routing, inner coil to the degree of depth of crossing covering between the spacing of substrate and levels coil, all can change neatly input loss, the degree of coupling, isolation, direction-sense size, the system that requires for difference all can be by changing above-mentioned condition to reach requirement.
Fig. 8 is the performance map of the directional coupler of above-described embodiment, comprises insertion loss, isolation and the degree of coupling, can find out that this embodiment can meet every key technical index of directional coupler.
In above-described embodiment, coil is concentric multi-turn structure.In addition, also can adopt other winding mode, such as parallel coiling, intersection coiling, center convolution coiling etc., as shown in Figure 9.
In above-described embodiment, adopt planar technique (such as standard CMOS process or BiCMOS technique) to realize based on the directional coupler of transformer, but also can adopt other mode to realize, the mode of building such as PCB metal line technique or sheet external component.When pcb board is made directional coupler, make two the mutually wire coil of coupling, i.e. the first coil and described the second coils at the multi-layer PCB board metal level; The relative position of two coils can be in vertical direction lower placement, also can be mutually around placement on same layer; Cs, Cp can adopt electric capacity or the outer electric capacity realization of sheet in the sheet.Two flying capcitor Cc1 and Cc2 can adopt in the sheet electric capacity, the sheet dispatch from foreign news agency parasitic capacitance that perhaps is coupled to realize.When adopting the sheet external component to build, can adopt the outer transformer of a slice, its primary coil is as the first coil, and its secondary coil is as the second coil, and perhaps its secondary coil is as the first coil, and its primary coil is as the second coil; Two tunable capacitor array Cp, Cs and two flying capcitor Cc1, Cc2 can adopt the outer various types of electric capacity of sheet.
The described directional coupler of above-described embodiment, can be by connect transmitter, receiver, antenna, while of build-out resistor composition with transceiver (being that Receiver And Transmitter can the be worked simultaneously) system of frequently working under same frequency, such as radio-frequency identification reader (RFID Reader) system, as shown in figure 10, the various connected modes that wherein can adopt are described as follows:
1) shown in Figure 10 (a), 1 port is input, and 2 ports are straight-through end, and 4 ports are coupled end, and 3 ports are isolation end.1 port connects transmitter output (TX), and 2 ports connect antenna, and 3 ports connect 50 ohm of earth resistances, and 4 ports connect receiver inlet (RX).Corresponding parameter is defined as: S12 (S21) → insertion loss; S24 (the S42) → degree of coupling; S14 (S41) → isolation.Wherein, the loss between " Sab " expression port a and the port b, its implication is identical in each connected mode below.
2) shown in Figure 10 (b), 2 ports are input, and 1 port is straight-through end, and 3 ports are coupled end, and 4 ports are isolation end.2 ports connect transmitter output (TX), and 1 port connects antenna, and 4 ports connect 50 ohm of earth resistances, and 3 ports connect receiver inlet (RX).Corresponding parameter is defined as: S12 (S21) → insertion loss; S13 (the S31) → degree of coupling; S23 (S32) → isolation.
3) shown in Figure 10 (c), 3 ports are input, and 4 ports are straight-through end, and 2 ports are coupled end, and 1 port is isolation end.3 ports connect transmitter output (TX), and 4 ports connect antenna, and 1 port connects 50 ohm of earth resistances, and 2 ports connect receiver inlet (RX).Corresponding parameter is defined as: S34 (S43) → insertion loss; S24 (the S42) → degree of coupling; S23 (S32) → isolation.
4) shown in Figure 10 (d), 4 ports are input, and 3 ports are straight-through end, and 1 port is coupled end, and 2 ports are isolation end.4 ports connect transmitter output (TX), and 3 ports connect antenna, and 2 ports connect 50 ohm of earth resistances, and 1 port connects receiver inlet (RX).Corresponding parameter is defined as: S34 (S43) → insertion loss; S31 (the S13) → degree of coupling; S14 (S41) → isolation.
Above-described embodiment only is for the principle of technical solution of the present invention is described, in order to limit the present invention, all any equal variation and modifications of doing within the spirit and principles in the present invention all should not belong to protection scope of the present invention.
Claims (10)
1. the directional coupler based on transformer is characterized in that, comprising:
The first coil, its two ends are respectively input and straight-through end;
The second coil consists of transformer device structure with the first coil, and its two ends are respectively coupled end and isolation end;
Two tunable capacitors, one connect described input and described straight-through end, and another connects described coupled end and described isolation end; And
Two flying capcitors, one connect described straight-through end and described coupled end, and another connects described input and described isolation end.
2. the directional coupler based on transformer as claimed in claim 1, it is characterized in that: described the first coil and described the second coil lay respectively at the different metal layer, include but not limited to: the different substrate plane of planar technique, the different metal layer of pcb board; Described planar technique comprises CMOS technique.
3. the directional coupler based on transformer as claimed in claim 2 is characterized in that, between described the first coil and described the second coil covering is arranged, and perhaps covers without crossing.
4. the directional coupler based on transformer as claimed in claim 2 is characterized in that, the metal wire of described the first coil is wider than or is equal to or less than the metal wire separation of described the second coil.
5. the directional coupler based on transformer as claimed in claim 2 is characterized in that, described tunable capacitor is electric capacity or the outer electric capacity of sheet in the sheet, and described flying capcitor is electric capacity in the sheet, the sheet dispatch from foreign news agency parasitic capacitance that perhaps is coupled.
6. the directional coupler based on transformer as claimed in claim 1, it is characterized in that: described the first coil and described the second coil are positioned at same metal layer, include but not limited to: the same substrate plane of planar technique, the same metal layer of pcb board; Described planar technique comprises CMOS technique.
7. the directional coupler based on transformer as claimed in claim 6 is characterized in that, described the first coil and described the second coil respectively enclose interphase distribution.
8. such as each described directional coupler based on transformer of claim 2-7, it is characterized in that the winding mode of described coil includes but not limited to: with one heart multi-turn coiling, parallel coiling, intersection coiling, center convolution coiling.
9. such as each described directional coupler based on transformer of claim 2-7, it is characterized in that the shape of described coil includes but not limited to: circular, oval, polygon.
10. the directional coupler based on transformer as claimed in claim 1, it is characterized in that, the mode that described directional coupler adopts the sheet external component to build realizes: described transformer is the outer transformer of sheet, and its primary coil and secondary coil are respectively as described the first coil and described the second coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210114033.XA CN103378394B (en) | 2012-04-17 | 2012-04-17 | A kind of directional coupler based on transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210114033.XA CN103378394B (en) | 2012-04-17 | 2012-04-17 | A kind of directional coupler based on transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103378394A true CN103378394A (en) | 2013-10-30 |
| CN103378394B CN103378394B (en) | 2016-03-02 |
Family
ID=49463187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210114033.XA Expired - Fee Related CN103378394B (en) | 2012-04-17 | 2012-04-17 | A kind of directional coupler based on transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103378394B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218939A (en) * | 2014-09-17 | 2014-12-17 | 王少夫 | Adjustable hybrid coupler circuit |
| CN104733452A (en) * | 2013-12-19 | 2015-06-24 | 深圳市中兴微电子技术有限公司 | Transformer, manufacturing method thereof and chip |
| CN106100595A (en) * | 2015-11-20 | 2016-11-09 | 厦门宇臻集成电路科技有限公司 | A kind of power amplifier of band wide-band coupler |
| CN106159406A (en) * | 2015-04-13 | 2016-11-23 | 聚牛科技(北京)有限公司 | A kind of frequency and the tunable directional coupler of isolation and autotuning algorithm thereof |
| CN107852142A (en) * | 2015-07-24 | 2018-03-27 | 华为技术有限公司 | Radio Frequency Duplexer |
| CN108631036A (en) * | 2018-04-09 | 2018-10-09 | 北京翰飞电子科技有限公司 | The orthogonal 3dB directional couplers of single-chip |
| CN112904079A (en) * | 2021-01-22 | 2021-06-04 | 新郦璞科技(上海)有限公司 | Bidirectional radio frequency power detector, working method and system |
| CN113130181A (en) * | 2019-12-31 | 2021-07-16 | 深南电路股份有限公司 | Transformer and electromagnetic device using same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1119793A (en) * | 1994-09-30 | 1996-04-03 | 张萍 | Wide frequency band low insertion loss directional coupler |
| CN1419313A (en) * | 2001-11-12 | 2003-05-21 | 乾坤科技股份有限公司 | Double-frequency directional coupler |
| CN101150219A (en) * | 2006-09-20 | 2008-03-26 | 株式会社瑞萨科技 | Directional coupler and RF circuit module |
| EP2387097A2 (en) * | 2010-05-03 | 2011-11-16 | Korea Advanced Institute of Science and Technology | Compact directional coupler using semiconductor process and mobile RFID reader transceiver system using the same |
-
2012
- 2012-04-17 CN CN201210114033.XA patent/CN103378394B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1119793A (en) * | 1994-09-30 | 1996-04-03 | 张萍 | Wide frequency band low insertion loss directional coupler |
| CN1419313A (en) * | 2001-11-12 | 2003-05-21 | 乾坤科技股份有限公司 | Double-frequency directional coupler |
| CN101150219A (en) * | 2006-09-20 | 2008-03-26 | 株式会社瑞萨科技 | Directional coupler and RF circuit module |
| EP2387097A2 (en) * | 2010-05-03 | 2011-11-16 | Korea Advanced Institute of Science and Technology | Compact directional coupler using semiconductor process and mobile RFID reader transceiver system using the same |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9543073B2 (en) | 2013-12-19 | 2017-01-10 | Zte Corporation | Transformer, method for manufacturing transformer and chip |
| CN104733452A (en) * | 2013-12-19 | 2015-06-24 | 深圳市中兴微电子技术有限公司 | Transformer, manufacturing method thereof and chip |
| EP3062317A4 (en) * | 2013-12-19 | 2016-12-07 | Zte Corp | Transformer, manufacturing method therefor, and chip |
| CN104218939A (en) * | 2014-09-17 | 2014-12-17 | 王少夫 | Adjustable hybrid coupler circuit |
| CN106159406A (en) * | 2015-04-13 | 2016-11-23 | 聚牛科技(北京)有限公司 | A kind of frequency and the tunable directional coupler of isolation and autotuning algorithm thereof |
| CN107852142A (en) * | 2015-07-24 | 2018-03-27 | 华为技术有限公司 | Radio Frequency Duplexer |
| CN106100595A (en) * | 2015-11-20 | 2016-11-09 | 厦门宇臻集成电路科技有限公司 | A kind of power amplifier of band wide-band coupler |
| CN106100595B (en) * | 2015-11-20 | 2019-04-26 | 厦门宇臻集成电路科技有限公司 | A kind of power amplifier with wide-band coupler |
| CN108631036A (en) * | 2018-04-09 | 2018-10-09 | 北京翰飞电子科技有限公司 | The orthogonal 3dB directional couplers of single-chip |
| CN108631036B (en) * | 2018-04-09 | 2023-10-20 | 王宇晨 | Single-chip orthogonal 3dB directional coupler |
| CN113130181A (en) * | 2019-12-31 | 2021-07-16 | 深南电路股份有限公司 | Transformer and electromagnetic device using same |
| CN113130181B (en) * | 2019-12-31 | 2024-06-07 | 深南电路股份有限公司 | Transformer and electromagnetic device using same |
| CN112904079A (en) * | 2021-01-22 | 2021-06-04 | 新郦璞科技(上海)有限公司 | Bidirectional radio frequency power detector, working method and system |
| CN112904079B (en) * | 2021-01-22 | 2024-04-16 | 新郦璞科技(上海)有限公司 | Bidirectional radio frequency power detector, working method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103378394B (en) | 2016-03-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103378394B (en) | A kind of directional coupler based on transformer | |
| KR101119910B1 (en) | Mobile RFID Reader Transceiver System | |
| CN104685713B (en) | Impedance inverter circuit and radio communication device | |
| CN101673865B (en) | A barron device manufactured by using integrated passive component process | |
| US10084225B2 (en) | Directional coupler | |
| CN105122645A (en) | High frequency module | |
| CN103620957B (en) | Antenna assembly and communication terminal | |
| EP3062317B1 (en) | Transformer, manufacturing method therefor, and chip | |
| US9653771B2 (en) | Directional coupler | |
| CN102544768A (en) | Antenna device and communication terminal apparatus | |
| CN102714351A (en) | Transformer having high degree of coupling, electronic circuit and electronic device | |
| US20160248450A1 (en) | Transformer and communication terminal device | |
| KR101174400B1 (en) | Space-adaptive self-resonator for wireless power transfer based on resonance | |
| CN103138037B (en) | A kind of integrated directional coupler based on standard CMOS process | |
| CN105453428A (en) | High frequency module | |
| CN102683779B (en) | Communication cavity device and elliptic function type high-pass filtering channel thereof | |
| CN114679149A (en) | IPD (inverse phase-locked loop) process-based N77 band-pass filter | |
| CN103378393B (en) | A kind of integrated directional coupler based on printed circuit board (PCB) | |
| CN204244192U (en) | LC filter circuit and high-frequency model | |
| US11699056B2 (en) | RFID inlay | |
| CN110380689B (en) | Passive balun on silicon substrate with side edge coupled winding structure | |
| CN110474608B (en) | Broadband quadrature phase generation network based on transformer | |
| CN108598644A (en) | A kind of n-layer radio frequency substrate and design method | |
| EP1307972B1 (en) | Coupler for wireless communications | |
| WO2015156056A1 (en) | Non-reciprocal circuit element and high-frequency module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 Termination date: 20190417 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |