CN104752801B - A kind of orientation electric bridge based on coaxial sling Transformation Matching - Google Patents
A kind of orientation electric bridge based on coaxial sling Transformation Matching Download PDFInfo
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- CN104752801B CN104752801B CN201510188212.1A CN201510188212A CN104752801B CN 104752801 B CN104752801 B CN 104752801B CN 201510188212 A CN201510188212 A CN 201510188212A CN 104752801 B CN104752801 B CN 104752801B
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Abstract
The invention discloses a kind of orientation electric bridge based on coaxial sling Transformation Matching, including cavity, coaxial cable, the first micro strip, the second micro strip and adjusting means, U-type groove absorber is provided with the cavity, described coaxial cable one end is fixed on cavity by joint, the internal and external conductor of the coaxial cable other end snaps into first micro strip, on the second micro strip respectively, adjusting means is screwed in by the cavity back side, positioned at the lower section of second micro strip.The present invention can be effectively improved coaxial balun to the interconnection matching problem of micro-strip, effectively improve the directionality of the orientation electric bridge based on balun and resistance power-devided circuit, reduce straight-through transmission loss, mechanical tuning device is simple in construction, cost is low, and adjustability is good, and engineering practicability is high.
Description
Technical field
The present invention relates to a kind of orientation electric bridge based on coaxial sling Transformation Matching.
Background technology
Orientation electric bridge based on coaxial balun and resistance power dividing technology is the crucial portion of microwave system and microwave measuring instrument
Part, convenient in broadband can complete to sample, has more than gradual change oriented coupler of coupler wire to incident, transmission, reflected signal
Flat Coupling frequency response and more preferably directionality.But coaxial balun easily evokes higher mode to the discontinuity of microstrip line transformation,
Make actual parameter off-design, and the reflection that the Transmission system mutation of coaxial connector and balun to micro-strip is brought can also deteriorate electricity
The directionality and the degree of coupling of bridge, the straight-through loss of increase.This patent proposes a kind of matching based on suspension micro-strip and tuning screw
Adjusting apparatus designing technique, improves coaxial-micro-strip Transformation Matching problem that connector and balun are transmitted to micro-strip, makes based on same
The combination orientation electric bridge performance of axle balun and resistance power-devided circuit is improved.
As a kind of scheme of signal directional separation, the work for the orientation electric bridge being made up of balun and resistance power-devided circuit is former
Reason is：In forward direction transmission, ratio distribution of power is completed by resistance power-devided circuit, a part of signal is exported from coupling port,
Another part transmits signal loading to a balance ports of balun, and another balance ports no signal loading, signal passes through not
Balance end is exported；During reverse transfer, signal is fed by balun unbalanced port, and it is defeated in balance end to obtain two-way by balun conversion
Go out, two balance ports outputs are completed after ratio distribution of power by resistance power-devided circuit, are reversely superimposed in coupling port constant amplitude, work(
Rate cancellation, coupling port is not exported, and realizes the uneven port of balun to the isolation of coupling port.But coaxial balun is to microstrip line
The discontinuity of conversion easily evokes higher mode, makes actual parameter off-design, and the coaxial-micro-strip Transmission system mutation is brought
Reflection can also deteriorate the directionality and the degree of coupling of electric bridge, the straight-through loss of increase.
It is close with the present invention in the impedance programs of the orientation electric bridge based on coaxial balun to resistance power-devided circuit
For the impedance matching mode of open-circuit line impedance matching mode and the impedance matching mode of warpage copper sheet, and loading absorbing material.
It is existing most close coaxial to be arrived with of the invention in the orientation electric bridge based on coaxial balun to resistance power-devided circuit
The impedance programs of micro-strip are mainly that ripple is inhaled in open-circuit line impedance matching mode and the impedance matching mode of warpage copper sheet and loading
The mode of material.Open-circuit line mode is substantially non-adjustable, high to conformity of production dependency degree, poor operability, product qualification rate compared with
It is low；Warpage copper sheet has certain adjustability, but BREATHABLE BANDWIDTH relative narrower, and unsuitable bending repeatedly is adjusted, poor repeatability,
Also higher is required to conformity of production；The transmission loss for loading absorbing material mode is big, using limited.
The content of the invention
To solve the deficiency that prior art is present, the invention discloses a kind of orientation electricity based on coaxial sling Transformation Matching
Bridge, the present invention realizes resistance power-devided circuit to suspend micro-strip, the increase screw tuning under suspension micro-strip to coaxial interconnecting nodes
Matched design, resonance matching is convenient, flexible, can effectively improve the coaxial resistance matching problem for arriving sling.
To achieve the above object, concrete scheme of the invention is as follows：
A kind of orientation electric bridge based on coaxial sling Transformation Matching, including cavity, coaxial cable, the first micro strip, second
U-type groove absorber is provided with micro strip and adjusting means, the cavity, described coaxial cable one end is fixed on chamber by joint
On body, the internal and external conductor of the coaxial cable other end snaps into first micro strip, on the second micro strip respectively, adjusting means by
The cavity back side is screwed in, positioned at the lower section of first micro strip.
First micro strip, the second micro strip are pasted onto cavity one end with double-tube glue respectively, the first micro strip, second micro-
Strap installation position is equipped with that certain altitude is poor, the inner wire interconnection of the micro strip of upper strata first and coaxial cable, while and P1, P3 two ends
Mouth interconnection, the micro strip of lower floor second is interconnected with coaxial cable outer conductor, while and interconnection between cavities.
The orientation electric bridge is to being externally provided with three interconnection ports P1, P2, P3, and port P1 and P3 are to be connected on micro strip
Two prevention at radio-frequency port, port P2 is connected to the uneven end of balun.
The port P1, P2 are straight-through port, and P3 is coupling/isolated port, and when signal forward direction is transmitted, P1 is input
Mouthful, P3 ports are coupled to via a part of power signal of resistance power-devided circuit, another part power signal leads directly to defeated through P2 ports
Go out；When signal inversion is transmitted, P2 ports be input port, imbalance of the power signal Jing Guo balun to balance conversion,
Balance end obtains the anti-phase two-way power signal of constant amplitude, and two-way power signal is realized respectively through power-devided circuit in P3 ports cancellation
Isolation, Partial Power signal is through the straight-through output in P1 ports.
Prefabricated power-devided circuit is distinguished on first micro strip, the second micro strip, the back side is not metallized, electric capacity is located at the
On one micro strip, the first micro strip, the second micro strip are pasted onto with double-tube glue close to the relevant position of cavity one end different height
On, the first micro strip, the second micro strip periphery are fixed on cavity, and the hanging spacing of cavity bottom is arrived in the middle of the first micro strip
From.
Described coaxial cable one end is fixed on cavity by joint, and the internal and external conductor of the other end snaps into described respectively
On one micro strip, the second micro strip, inner wire is connected on the first micro strip by soldering, and outer conductor is by being pressed in doubling repeatedly
One section of gold ribbon on be connected with the second micro strip, to ensure good contact.
Magnetic core is socketed with the coaxial cable.
The adjusting means is tuning screw.
Beneficial effects of the present invention：
1. improve the directionality of electric bridge.The switching of coaxial balun to micro-strip is matched, and improves signal transmission availability, profit
The amplitude-phase consistency of two-way balanced signal is controlled in improving coaxial balun resistance power-devided circuit, the direction of electric bridge is improved
Property.
2. reproducible, performance is stable.Compared to open-circuit line and warpage copper sheet, adjustability is good, and BREATHABLE BANDWIDTH is bigger, is adapted to anti-
Polyphony is tried, and has smaller transmission loss compared to the dispensing mode of loading absorbing material.
3. the present invention coaxial balun and resistance power-devided circuit combination orientation electric bridge in introduce based on suspension micro-strip and
The Matching and modification mechanism design of tuning screw, reduces the additive effect that Transmission system mutation is introduced, effectively suppresses higher hamonic wave
Excite, improve the efficiency of transmission of signal, orient the degree of coupling and directionality of electric bridge improves simultaneously.
4. the present invention can be effectively improved coaxial balun to the interconnection matching problem of micro-strip, straight-through transmission loss is reduced,
Mechanical tuning device is simple in construction, and cost is low, and adjustability is good, and engineering practicability is high.
Brief description of the drawings
Fig. 1 combination orientation electrical bridge principle figures；
Fig. 2 combination electric bridge suspension Circuit Matching structural scheme of mechanism；
Fig. 3 combination electric bridge suspension Circuit Matchings mechanism enlarged diagram；
In figure, 1, P2 ports, 2, P1 ports, 3, P3 ports, 4, coaxial cable, 5, magnetic core, the 6, first micro strip, 7, U-shaped
Groove absorber, 8, patch capacitor, 9, tuning screw, the 10, second micro strip, 11, air dielectric layer, 12, coaxial balun end face.
Embodiment：
The present invention is described in detail below in conjunction with the accompanying drawings：
As Figure 1-3, based on orientation electric bridge of the present invention by coaxial line balun with lumped parameter resistance power-devided circuit,
Fig. 1 show the schematic diagram of the combination orientation electric bridge based on coaxial balun and resistance power-devided circuit, and P1 ports 2 and P2 ports 1 are
Straight-through port, P3 ports 3 are coupling/isolated port.Resistance and patch capacitor 8 constitute sling resistance power-devided circuit, and signal is positive
During transmission, P1 ports 2 are input port, and Partial Power is coupled to P3 ports 3 and exported after work of resistance point, partly passes through P2 ports
1 straight-through output；When signals reverse is transmitted, P2 ports 1 be input port, P3 ports 3 be isolated port, signal power mainly by
The straight-through output in P1 ports 2.The discontinuity that coaxial balun is converted to micro strip easily evokes higher hamonic wave, deviates actual parameter and sets
Meter, can also deteriorate the directionality and the degree of coupling of electric bridge, the straight-through loss of increase.
Coaxial balun end face 12 and the clearance control of the first micro strip 6 are in .05~0.1mm, it is ensured that inner wire and the first micro-strip
The lap of splice of piece 6 is 0.3~0.35mm.It can at utmost ensure that the interconnecting transfer of coaxial cable 4 to micro strip Whole frequency band is imitated
Really.It is provided with cavity on U-type groove absorber 7, coaxial cable 4 and is socketed with magnetic core 5.
Present invention introduces the impedance matching adjusting apparatus designing technique based on suspension micro-strip and tuning screw combination, to suspend
Micro-strip realizes resistance power-devided circuit, and Founder sets tuning screw 9 to coaxial microband transform node under suspension micro-strip, is effectively improved
Coaxial cable 4 arrives the matching problem that micro-strip is converted.Most of power line of suspension micro-strip is concentrated in air, and positioned at suspension
Tuning screw 9 below micro-strip produces perturbation to electromagnetic field, equivalent to increase capacitive or perceptual effect, reaches impedance regulation matching
Purpose.Based on the impedance matching adjusting apparatus designing technique orientation electric bridge signal transmission availability improve, the degree of coupling and
Directionality improves simultaneously, and mechanical tuning device is simple, and cost is low, efficiency high, reliable in quality, is produced beneficial to improving product yield and improving
Efficiency.
Micro-strip is suspended based on suspended stripline technology, dielectric layer front printed circuit, and make printed resistor, surface patch
Patch capacitor 8 is filled, resistance power-devided circuit is constituted, the dielectric layer back side is not metallized, liftoff hanging certain altitude, air dielectric is filled
Layer 11.
It is respectively the first micro strip 6 and the second micro strip 10 containing two panels to suspend micro-strip, and cavity one end is pasted onto with double-tube glue,
First micro strip 6, the installation position of the second micro strip 10 are equipped with that certain altitude is poor, and the first micro strip of upper strata 6 in coaxial cable 4 with leading
Body is interconnected, while with P1 ports 2, the two-port of P3 ports 3 interconnection, the second micro strip of lower floor 10 is interconnected with the outer conductor of coaxial cable 4,
While and interconnection between cavities.
Although above-mentioned the embodiment of the present invention is described with reference to accompanying drawing, not to present invention protection model
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need to pay various modifications or deform still within protection scope of the present invention that creative work can make.
Claims (7)
1. a kind of orientation electric bridge based on coaxial sling Transformation Matching, it is characterized in that, including cavity, coaxial cable, the first micro-strip
U-type groove absorber is provided with piece, the second micro strip and adjusting means, the cavity, described coaxial cable one end passes through joint
It is fixed on cavity, the internal and external conductor of the coaxial cable other end snaps into first micro strip, on the second micro strip respectively, adjusts
Regulating device is screwed in by the cavity back side, positioned at the lower section of first micro strip；
First micro strip, the second micro strip are pasted onto cavity one end, the first micro strip, the second micro strip with double-tube glue respectively
Installation position is equipped with that certain altitude is poor, the inner wire interconnection of the micro strip of upper strata first and coaxial cable, while and P1, P3 two-port it is mutual
Even, the micro strip of lower floor second is interconnected with coaxial cable outer conductor.
2. a kind of orientation electric bridge based on coaxial sling Transformation Matching as claimed in claim 1, it is characterized in that, the orientation electricity
Bridge is two prevention at radio-frequency port being connected on micro strip, port to being externally provided with three interconnection ports P1, P2, P3, port P1 and P3
P2 is connected to the uneven end of balun.
3. a kind of orientation electric bridge based on coaxial sling Transformation Matching as claimed in claim 2, it is characterized in that, the port
P1, P2 are straight-through port, and P3 is coupling/isolated port, and when signal forward direction is transmitted, P1 is input port, via work of resistance point
A part of power signal of circuit is coupled to P3 ports, and another part power signal is through the straight-through output in P2 ports；When signal inversion is passed
When defeated, P2 ports are input port, and imbalance of the power signal Jing Guo balun obtains constant amplitude anti-to the conversion of balance in balance end
The two-way power signal of phase, two-way power signal is realized respectively through power-devided circuit in P3 ports cancellation isolates, Partial Power letter
Number through the straight-through output in P1 ports.
4. a kind of orientation electric bridge based on coaxial sling Transformation Matching as claimed in claim 1, it is characterized in that, described first is micro-
Prefabricated power-devided circuit is distinguished on strap, the second micro strip, the back side is not metallized, electric capacity is located on the first micro strip, and first is micro-
Strap, the second micro strip are pasted onto on the relevant position of cavity one end different height with double-tube glue, the first micro strip, second
Micro strip periphery is fixed on cavity, and the hanging certain distance of cavity bottom is arrived in the middle of the first micro strip.
5. a kind of orientation electric bridge based on coaxial sling Transformation Matching as claimed in claim 1, it is characterized in that, the coaxial electrical
Cable one end is fixed on cavity by joint, and the internal and external conductor of the other end snaps into first micro strip, the second micro-strip respectively
On piece, inner wire is connected on the first micro strip by soldering, and outer conductor is by being pressed on one section of gold ribbon of doubling repeatedly and
Two micro strips are connected, to ensure good contact.
6. a kind of orientation electric bridge based on coaxial sling Transformation Matching as described in claim 1 or 5, it is characterized in that, it is described same
Magnetic core is socketed with shaft cable.
7. a kind of orientation electric bridge based on coaxial sling Transformation Matching as claimed in claim 1, it is characterized in that, the regulation dress
It is set to tuning screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510188212.1A CN104752801B (en) | 2015-04-20 | 2015-04-20 | A kind of orientation electric bridge based on coaxial sling Transformation Matching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510188212.1A CN104752801B (en) | 2015-04-20 | 2015-04-20 | A kind of orientation electric bridge based on coaxial sling Transformation Matching |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104752801A CN104752801A (en) | 2015-07-01 |
| CN104752801B true CN104752801B (en) | 2017-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510188212.1A Expired - Fee Related CN104752801B (en) | 2015-04-20 | 2015-04-20 | A kind of orientation electric bridge based on coaxial sling Transformation Matching |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106816679B (en) * | 2017-03-24 | 2017-12-05 | 西安科技大学 | A kind of orientation electric bridge based on parallel-plate transmission line |
| CN112003570B (en) * | 2020-08-31 | 2022-07-19 | 中电科思仪科技股份有限公司 | Millimeter wave noise source with high-frequency broadband and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2243719Y (en) * | 1995-10-30 | 1996-12-25 | 东南大学 | Small size hanging micro-band two way filter |
| CN101950840A (en) * | 2010-09-30 | 2011-01-19 | 浙江纺织服装职业技术学院 | Air strip line bridge |
| CN104319450A (en) * | 2014-10-24 | 2015-01-28 | 中国电子科技集团公司第四十一研究所 | Ultra wide band bridge based on thick film manufacturing technology |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7095294B2 (en) * | 2004-06-30 | 2006-08-22 | Agilent Technologies, Inc. | Directional bridge coupler |
-
2015
- 2015-04-20 CN CN201510188212.1A patent/CN104752801B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2243719Y (en) * | 1995-10-30 | 1996-12-25 | 东南大学 | Small size hanging micro-band two way filter |
| CN101950840A (en) * | 2010-09-30 | 2011-01-19 | 浙江纺织服装职业技术学院 | Air strip line bridge |
| CN104319450A (en) * | 2014-10-24 | 2015-01-28 | 中国电子科技集团公司第四十一研究所 | Ultra wide band bridge based on thick film manufacturing technology |
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| CN104752801A (en) | 2015-07-01 |
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Effective date of registration: 20190220 Address after: 266555 No. 98 Xiangjiang Road, Huangdao District, Qingdao City, Shandong Province Patentee after: China Electronics Technology Instrument and Meter Co., Ltd. Address before: 266555 No. 98 Xiangjiang Road, Qingdao economic and Technological Development Zone, Shandong Patentee before: The 41st Institute of CETC |
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