CN110148825A - Active circulator without bias magnetic field - Google Patents
Active circulator without bias magnetic field Download PDFInfo
- Publication number
- CN110148825A CN110148825A CN201910448372.3A CN201910448372A CN110148825A CN 110148825 A CN110148825 A CN 110148825A CN 201910448372 A CN201910448372 A CN 201910448372A CN 110148825 A CN110148825 A CN 110148825A
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- China
- Prior art keywords
- microstrip
- interdigital
- magnetic field
- bias magnetic
- capacitor
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/32—Non-reciprocal transmission devices
- H01P1/38—Circulators
- H01P1/383—Junction circulators, e.g. Y-circulators
- H01P1/387—Strip line circulators
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- Microwave Amplifiers (AREA)
Abstract
The invention discloses a kind of active circulators without bias magnetic field, it is used for feed-in by three and feeds out the microstrip feed line of electromagnetic wave signal energy, three vertical with the feeder line group MIM capacitor of microstrip feed line input terminal, connect three groups of interdigital capacitors of microstrip feed line input terminal, three groups of microstrip resonance structure compositions.Three microstrip feed lines are symmetrical at 120 degree respectively, and three groups of matching MIM capacitors, slotting finger capacitor are symmetrical at 120 degree, and three groups of microstrip resonance structures are located at symmetrical at 120 degree between the angle of three microstrip feed lines formation.One group of microstrip resonance structure connects the power amplifier with 0dB gain by a three square ring microstrip structures and forms, and three square ring microstrip structures are parallel with microstrip feed line at two sides at 120 degree of angles.The present invention has many advantages, such as to be suitable for frequency microwave communication system without bias magnetic field, convenient for integrated, response frequency is high.
Description
Technical field
The present invention relates to microwave device technology fields, and in particular to a kind of active circulator without bias magnetic field.
Background technique
Circulator is one of device indispensable in microwave circuit system, is a kind of to have the characteristics that the multiterminal of directional transmissions
Port irreversible device.The developing direction of circulator is miniaturization, high band, broadband.Microwave structure has microstrip-type, waveguide
Formula, strip line and coaxial-type, wherein it is most with three end circulator of micro-strip, medium is done by Ferrite Material, using microwave in iron oxygen
Nonreciprocal propagation effect design in body medium is made.Change the direction of bias magnetic field, belt direction will change.
The positive higher integrated development of modern radio-frequency microwave integrated circuit, and traditional circulator is due to needing ferrite
Material, which is realized, changes bias magnetic field direction, and therefore, it is difficult to realize that on piece is integrated.
Application No. is the Chinese invention patent applications of 201380000128.1 (Publication No. CN 103403955A) to disclose
A kind of circulator, including shell and internal component, the shell are used to form the accommodation space for accommodating internal component；It is described
Internal component includes input port, output port and isolated port, and input port is used for the input of signal, and output port is for believing
Number output, isolated port is used to be isolated the opposite signal of sense of direction and fan-in mouth, the internal component
For making the mode gone in ring in one direction of signal inputted from input port to output port output signal；The shell includes
Ground pin, described ground pin is for the circulator to be grounded, the ground wire of described ground pin connection PCB；The one of described ground pin
End is for connecting circulator shell, and the other end is for connecting printed circuit board.The technical solution improves end to improve port performance
The quality of message number, but the circulator needs bias magnetic field, and is not easy to integrate.
Summary of the invention
For overcome the deficiencies in the prior art, realize that on piece integrates circulator, the invention proposes one kind without biasing magnetic
The active circulator of field.
A kind of active circulator without bias magnetic field, it is described including the microstrip line construction on substrate and the substrate
Microstrip line construction include:
Three groups of microstrip resonance structures, the microstrip resonance structure include three square ring microstrip structures and are connected to described three
Power amplifier on square ring microstrip structure；
Three input microstrip feed lines, are separately positioned between each group microstrip resonance structure；
It is connected to the MIM capacitor of the input terminal of the input microstrip feed line, the MIM capacitor and the input micro-strip are presented
Line is vertical；
With the interdigital capacitor of MIM capacitor cooperation.
It is used as the preferred technical solution of the present invention below:
Three square rings in the three square ring microstrip structures are isoceles triangle ring, and the apex angle of the isoceles triangle ring is 120 degree,
The power amplifier is arranged on the bottom edge of the isoceles triangle ring.
The apex angle of three isoceles triangle rings and etc. waist edges it is close to each other, and stay there are three gap strip, it is humorous to form three groups of micro-strips
Vibration structure.
Described three inputs microstrip feed lines be arranged in the waist edges such as adjacent isoceles triangle ring there are three gap strips in.
Three isoceles triangle rings etc. between waist edges and bottom edge use arc transition.
Three input microstrip feed lines are symmetrical at 120 degree；MIM capacitor positioned at microstrip feed line input terminal is perpendicular to micro-
Ribbon feeder；It inserts and refers to that capacitor is connected in parallel to microstrip feed line input terminal；Microstrip resonance structure is located at the folder of three microstrip feed lines formation
Symmetrical at 120 degree between angle, one group of microstrip resonance structure connects the function with 0dB gain by a three square ring microstrip structures
Rate amplifier composition, three square ring microstrip structures are parallel with microstrip feed line at two sides at 120 degree of angles.The i.e. described input micro-strip feedback
The waist edges such as line and adjacent isoceles triangle ring are parallel.The power amplifier is the power amplifier with 0dB gain.
MIM (metal-insulator-metal type) capacitor has connecting pin (i.e. three spaced companies that trident refers to
Narrow bars), for being connect with interdigital capacitor.
The interdigital capacitor is three interdigital, what MIM capacitor described in the interdigital insertion of the three of the interdigital capacitor had
Three is interdigital, forms certain interval, and cooperation MIM capacitor realizes the input matching of microstrip feed line input port.
The equivalent tank length for the resonance structure that the power amplifier of three square ring microstrip structures and 0dB gain forms ring thus
The wavelength of row device working frequency points.
Three square ring microstrip structures input electromagnetic wave energy from micro-strip at two sides realization parallel with microstrip feed line at 120 degree of angles
Feeder line is coupled into microstrip resonance structure, realizes resonance and the transmission of electromagnetic wave energy.
Most preferred technical solution are as follows:
Micro-strip width is 1.22mm in the three square ring microstrip structures, and the length of the power amplifier is 9.6mm,
The circular arc is with radius 2.4mm, 150 ° of circular arc, and the width of the input microstrip feed line is 1mm, the MIM electricity
The interdigital width of the interdigital and described interdigital capacitor of the three interdigital connecting pins held is 0.25mm, the MIM capacitor
It is interdigital and interdigital capacitor it is interdigital between be divided into 0.1mm, under above-mentioned condition, this circulator realize logical in-band insertion loss be less than-
1.8dB, isolation are greater than 25dB.The circulator is not necessarily to bias magnetic field, response frequency height, convenient for integrated.
Compared with prior art, the beneficial effects of the present invention are:
In the present invention, the equivalent tank for the resonance structure that the power amplifier of three square ring microstrip structures and 0dB gain forms
The wavelength of length circulator working frequency points thus.Three square ring microstrip structures are parallel with microstrip feed line real at two sides at 120 degree of angles
Now input electromagnetic wave energy is coupled into microstrip resonance structure from microstrip feed line, realizes resonance and the transmission of electromagnetic wave energy.This
Invention reduces the whole size of circulator, it can be achieved that integrated with microwave circuit without the active circulator of bias magnetic field；It improves
The working frequency of circulator.
The present invention has many advantages, such as to be suitable for frequency microwave communication system without bias magnetic field, convenient for integrated, response frequency is high
System.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the active circulator without bias magnetic field.
Fig. 2 is the scale diagrams of the active circulator without bias magnetic field.
Fig. 3 is that the working frequency designed according to the active circulator structure without bias magnetic field proposed is 1.62GHz
Circulator frequency response curve.
Description of symbols: 1, microstrip feed line is inputted；2, MIM capacitor；3, interdigital capacitor；4, microstrip resonance structure；5, three
Square ring microstrip structure；6, power amplifier.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
As shown in Figure 1, a kind of active circulator without bias magnetic field, including the micro-strip knot on substrate and substrate
Structure, microstrip line construction include: three groups of microstrip resonance structures 4, and microstrip resonance structure 4 includes three square ring microstrip structures 5 and connection
Power amplifier 6 on three square ring microstrip structures 5；Three input microstrip feed lines 1, are separately positioned on each group microstrip resonance structure
Between 4；It is connected to the MIM capacitor 2 of the input terminal of input microstrip feed line 1, MIM capacitor 2 is vertical with input microstrip feed line 1；With MIM
The interdigital capacitor 3 that capacitor 2 cooperates.
Three square rings in three square ring microstrip structures 5 are isoceles triangle ring, and the apex angle of the isoceles triangle ring is 120 degree, power
Amplifier 6 is arranged on the bottom edge of isoceles triangle ring.
The apex angle of three isoceles triangle rings and etc. waist edges it is close to each other, and stay there are three gap strip, it is humorous to form three groups of micro-strips
Vibration structure 4.Three input microstrip feed lines 1 be arranged in the waist edges such as adjacent isoceles triangle ring there are three gap strips in.Three etc.
Lumbar triangle ring etc. between waist edges and bottom edge use arc transition.
Three input microstrip feed lines 1 are symmetrical at 120 degree；Positioned at input 1 input terminal of microstrip feed line MIM capacitor 2 perpendicular to
Input microstrip feed line 1；Interdigital capacitor 3 is connected in parallel to input microstrip feed line 1；Microstrip resonance structure 4 is located at three input micro-strips
Symmetrical at 120 degree between the angle that feeder line 1 is formed, one group of microstrip resonance structure 4 connects one by a three square ring microstrip structures 5
Power amplifier 6 with 0dB gain forms, two sides and input microstrip feed line 1 of the three square ring microstrip structures 4 at 120 degree of angles
In parallel.
Interdigital capacitor 3 is three interdigital, and cooperation MIM capacitor 2 realizes the input matching of microstrip feed line input port, such as Fig. 2 institute
Show.
The equivalent tank length for the resonance structure 4 that the power amplifiers 6 of three square ring microstrip structure 5 and 0dB gains forms is
The wavelength of this circulator working frequency points.
Three square ring microstrip structures 5 input electromagnetic wave energy from micro- at parallel with the microstrip feed line realization in two sides at 120 degree of angles
Ribbon feeder 1 is coupled into microstrip resonance structure 4, realizes resonance and the transmission of electromagnetic wave energy.
Fig. 2 is the scale diagrams of the present embodiment, by designing and optimizing, finally determines this without the active of bias magnetic field
The preferred specific size (other to be not shown) of one of circulator.Wherein L1=9.6mm, L2=1.1mm, L3=1.5mm, L4=
1=150 ° of 2mm, L5=10.2mm, W1=1.22mm, W2=1mm, W3=0.25mm, W4=0.1mm, R1=2.4mm, θ, θ 2
=120 °.
Fig. 3 is the frequency response curve of the present embodiment.This circulator realizes logical in-band insertion loss and is less than -1.8dB,
Isolation is greater than 25dB.
Claims (10)
1. a kind of active circulator without bias magnetic field, including the microstrip line construction on substrate and the substrate, feature
It is, the microstrip line construction includes:
Three groups of microstrip resonance structures, the microstrip resonance structure is including three square ring microstrip structures and is connected to three square ring
Power amplifier on microstrip structure；
Three input microstrip feed lines, are separately positioned between each group microstrip resonance structure；
It is connected to the MIM capacitor of the input terminal of the input microstrip feed line, the MIM capacitor and the input microstrip feed line hang down
Directly；
With the interdigital capacitor of MIM capacitor cooperation.
2. the active circulator according to claim 1 without bias magnetic field, which is characterized in that the three square ring micro-strips
Three square rings in structure are isoceles triangle ring, and the apex angle of the isoceles triangle ring is 120 degree, and the power amplifier is arranged in institute
On the bottom edge for stating isoceles triangle ring.
3. the active circulator according to claim 2 without bias magnetic field, which is characterized in that three isoceles triangle rings
Apex angle and etc. waist edges it is close to each other, and stay there are three gap strip, form three groups of microstrip resonance structures.
4. the active circulator according to claim 3 without bias magnetic field, which is characterized in that three inputs are micro-
Ribbon feeder be arranged in the waist edges such as adjacent isoceles triangle ring there are three gap strips in.
5. the active circulator according to claim 2 without bias magnetic field, which is characterized in that three isosceles three
Square ring etc. between waist edges and bottom edge use arc transition.
6. the active circulator according to claim 2 without bias magnetic field, which is characterized in that the input micro-strip feedback
The waist edges such as line and adjacent isoceles triangle ring are parallel.
7. the active circulator according to claim 1 without bias magnetic field, which is characterized in that the power amplifier
For a power amplifier with 0dB gain.
8. the active circulator according to claim 1 without bias magnetic field, which is characterized in that the MIM capacitor band
There are three interdigital connecting pins.
9. the active circulator according to claim 1 without bias magnetic field, which is characterized in that the interdigital capacitor is
Three is interdigital, and MIM capacitor described in the interdigital insertion of the three of the interdigital capacitor has three interdigital.
10. the active circulator according to claim 5 without bias magnetic field, which is characterized in that three square rings are micro-
Micro-strip width is 1.22mm in band structure, and the length of the power amplifier is 9.6mm, and the circular arc is with radius
The width of 2.4mm, 150 ° of circular arc, the input microstrip feed line are 1mm, the interdigital connecting pin of the three of the MIM capacitor
The interdigital width of interdigital and described interdigital capacitor be 0.25mm, the fork of the interdigital and interdigital capacitor of the MIM capacitor
0.1mm is divided between finger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910448372.3A CN110148825A (en) | 2019-05-28 | 2019-05-28 | Active circulator without bias magnetic field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910448372.3A CN110148825A (en) | 2019-05-28 | 2019-05-28 | Active circulator without bias magnetic field |
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| Publication Number | Publication Date |
|---|---|
| CN110148825A true CN110148825A (en) | 2019-08-20 |
Family
ID=67593283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910448372.3A Pending CN110148825A (en) | 2019-05-28 | 2019-05-28 | Active circulator without bias magnetic field |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4174506A (en) * | 1976-12-24 | 1979-11-13 | Nippon Electric Co., Ltd. | Three-port lumped-element circulator comprising bypass conductors |
| CN1372348A (en) * | 2001-04-04 | 2002-10-02 | 株式会社村田制作所 | Lumped constant wave filter, antenna shared device and communication thereof |
| CN104868212A (en) * | 2014-02-25 | 2015-08-26 | 南京理工大学 | Mixed integrated active circulator based on GaN MMIC power amplifier |
-
2019
- 2019-05-28 CN CN201910448372.3A patent/CN110148825A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4174506A (en) * | 1976-12-24 | 1979-11-13 | Nippon Electric Co., Ltd. | Three-port lumped-element circulator comprising bypass conductors |
| CN1372348A (en) * | 2001-04-04 | 2002-10-02 | 株式会社村田制作所 | Lumped constant wave filter, antenna shared device and communication thereof |
| CN104868212A (en) * | 2014-02-25 | 2015-08-26 | 南京理工大学 | Mixed integrated active circulator based on GaN MMIC power amplifier |
Non-Patent Citations (2)
| Title |
|---|
| STEVE W. Y. MUNG 等: ""Active Three-Way Circulator Using Transistor Feedback Network"", 《IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS》 * |
| 许慧: ""基于耦合模理论的多模谐振耦合电路研究"", 《中国优秀硕士学位论文全文数据库 信息科技辑》 * |
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Application publication date: 20190820 |
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| RJ01 | Rejection of invention patent application after publication |