CN104752801A - Directional bridge based on coaxial sling transform-matching - Google Patents
Directional bridge based on coaxial sling transform-matching Download PDFInfo
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- CN104752801A CN104752801A CN201510188212.1A CN201510188212A CN104752801A CN 104752801 A CN104752801 A CN 104752801A CN 201510188212 A CN201510188212 A CN 201510188212A CN 104752801 A CN104752801 A CN 104752801A
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Abstract
The invention discloses a directional bridge based on coaxial sling transform-matching. The directional bridge comprises a cavity, a coaxial cable, a first microstrip, a second microstrip and a regulator. The cavity is internally provided with a U-slot absorber; one end of the coaxial cable is fixed to the cavity through a connector; inner and outer conductors of the other end of the coaxial cable are jointed to the first and second microstrips, respectively; the regulator is screwed in from the back of the cavity and is located below the second microstrip. The directional bridge has the advantages that the problem of interconnect matching from the BALUN to the microstrips is effectively improved, directionality of the directional bridge based on BALUN and a resistance power division circuit is effectively improved, cut-through transmission loss is reduced, and a tuning mechanism is simple in structure, low in cost, good in adjustability and high in engineering practicality.
Description
Technical field
The present invention relates to a kind of directed electric bridge based on coaxial sling Transformation Matching.
Background technology
Directed electric bridge based on coaxial Ba Lun and work of resistance point technology is the critical component of microwave system and microwave measuring instrument, in broadband, sampling can be completed to incidence, transmission, reflected signal easily, have more smooth Coupling frequency response and more preferably directivity than gradual change oriented coupler of coupler wire.But coaxial Ba Lun easily evokes higher mode to the discontinuity of microstrip line transformation, makes actual parameter off-design, and coaxial connector and Ba Lun also can worsen directivity and the degree of coupling of electric bridge to the suddenly change reflection that brings of the transmission system of micro-band, and loss is led directly in increase.This patent proposes a kind of Matching and modification apparatus design technology based on suspending micro-band and tuning screw, improve connector and Ba Lun coaxial-micro-band Transformation Matching problem to micro-band transmission, the directed electric bridge performance of combination based on coaxial Ba Lun and work of resistance parallel circuit is improved.
As a kind of scheme of signal directional separation, the operation principle of the directed electric bridge be made up of Ba Lun and work of resistance parallel circuit is: when forward transmits, power is completed surely than distribution by work of resistance parallel circuit, part signal exports from coupling port, another part signal transmission is loaded into a balance ports of Ba Lun, another balance ports no signal loads, and signal is exported by uneven end; During reverse transfer, signal is by the uneven port feed-in of Ba Lun, obtain two-way by Ba Lun conversion in balance end to export, two balance ports export and complete power surely than after distribution by work of resistance parallel circuit, oppositely superpose in coupling port constant amplitude, power disappears mutually, and coupling port does not export, and realizes the isolation of the uneven port of Ba Lun to coupling port.But coaxial Ba Lun easily evokes higher mode to the discontinuity of microstrip line transformation, makes actual parameter off-design, and the suddenly change reflection that brings of this coaxial-micro-tape transport system also can worsen directivity and the degree of coupling of electric bridge, and loss is led directly in increase.
Based on coaxial Ba Lun in the impedance programs of the directed electric bridge of work of resistance parallel circuit, the impedance matching mode of close with the present invention is open-circuit line impedance matching mode and warpage copper sheet, and load the impedance matching mode of absorbing material.
Based on coaxial Ba Lun in the directed electric bridge of work of resistance parallel circuit, the existing coaxial impedance programs to micro-band the most close with the present invention is mainly the impedance matching mode of open-circuit line impedance matching mode and warpage copper sheet and loads the mode of absorbing material.Open-circuit line mode is substantially non-adjustable, high to conformity of production dependency degree, poor operability, and conforming product rate is lower; Warpage copper sheet has certain adjustability, but BREATHABLE BANDWIDTH relative narrower, and be not suitable for the adjustment of bending repeatedly, poor repeatability, require also higher to conformity of production; The loss loading absorbing material mode is large, applies limited.
Summary of the invention
For solving the deficiency that prior art exists, the invention discloses a kind of directed electric bridge based on coaxial sling Transformation Matching, the present invention realizes work of resistance parallel circuit to suspend micro-band, suspension micro-take coaxial interconnecting nodes under increase screw resonance matching design, resonance matching is convenient, flexible, effectively can improve the coaxial resistance matching problem to sling.
For achieving the above object, concrete scheme of the present invention is as follows:
A kind of directed electric bridge based on coaxial sling Transformation Matching, comprise cavity, coaxial cable, the first micro strip, the second micro strip and adjusting device, U-type groove absorber is provided with in described cavity, described coaxial cable one end is fixed on cavity by joint, the internal and external conductor of the coaxial cable other end snaps on described first micro strip, the second micro strip respectively, adjusting device is screwed in by the cavity back side, is positioned at the below of described first micro strip.
Described first micro strip, the second micro strip are pasted onto cavity one end with double-tube glue respectively, first micro strip, the second micro strip installation position are equipped with certain altitude difference, the inner wire of upper strata first micro strip and coaxial cable interconnects, simultaneously and P1, P3 two-port interconnects, lower floor second micro strip and coaxial cable outer conductor interconnect, simultaneously and interconnection between cavities.
Described directed electric bridge is externally provided with three interconnect port P1, P2, P3, and port P1 and P3 is two prevention at radio-frequency port be connected on micro strip, and port P2 is connected to Ba Lun imbalance end.
Described port P1, P2 are straight-through port, and P3 is coupling/isolated port, and when signal forward transmits, P1 is input port, are coupled to P3 port via work of resistance parallel circuit part power signal, and another part power signal is through the straight-through output of P2 port; When signal inversion is transmitted, P2 port is input port, power signal through Ba Lun imbalance to balance conversion, the anti-phase two-way power signal of constant amplitude is obtained in balance end, two-way power signal to disappear mutually at P3 port respectively through merit parallel circuit and realizes isolation, and Partial Power signal exports through P1 port is straight-through.
Respectively prefabricated merit parallel circuit on described first micro strip, the second micro strip, do not metallize in the back side, electric capacity is positioned on the first micro strip, first micro strip, the second micro strip double-tube glue are pasted onto on the relevant position of cavity one end differing heights, first micro strip, the second micro strip periphery are fixed on cavity, to the unsettled certain distance of cavity bottom in the middle of the first micro strip.
Described coaxial cable one end is fixed on cavity by joint, the internal and external conductor of the other end snaps on described first micro strip, the second micro strip respectively, inner wire is connected on the first micro strip by soldering, outer conductor is connected with the second micro strip by one section of gold ribbon being pressed in doubling repeatedly, to ensure good contact.
Described coaxial cable is socketed with magnetic core.
Described adjusting device is tuning screw.
Beneficial effect of the present invention:
1. improve the directivity of electric bridge.Coaxial Ba Lun mates to the switching of micro-band, improves Signal transmissions validity, is beneficial to improve coaxial Ba Lun and work of resistance parallel circuit and control the amplitude-phase consistency of two-way balanced signal, improves the directivity of electric bridge.
2. reproducible, stable performance.Compare open-circuit line and warpage copper sheet, adjustability is good, and BREATHABLE BANDWIDTH is larger, is applicable to repeatedly debugging, and comparing the dispensing mode loading absorbing material has less loss.
3. the present invention introduces the Matching and modification mechanism design based on the micro-band of suspension and tuning screw in the directed electric bridge of the combination of coaxial Ba Lun and work of resistance parallel circuit, reduce the additive effect that transmission system sudden change is introduced, exciting of effective suppression high order harmonic component, improve the efficiency of transmission of signal, the degree of coupling and the directivity of directed electric bridge are improved simultaneously.
4. the present invention effectively can improve the interconnection matching problem of coaxial Ba Lun to micro-band, reduces straight-through loss, and mechanical tuning device structure is simple, and cost is low, and adjustability is good, and engineering practicability is high.
Accompanying drawing explanation
Fig. 1 combines directed electrical bridge principle figure;
Fig. 2 combines electric bridge suspension Circuit Matching structural scheme of mechanism;
Fig. 3 combines electric bridge suspension Circuit Matching mechanism enlarged diagram;
In figure, 1, P2 port, 2, P1 port, 3, P3 port, 4, coaxial cable, 5, magnetic core, 6, first micro-band, 7, U-type groove absorber, 8, patch capacitor, 9, tuning screw, the 10, second micro strip, 11, air dielectric layer, 12, coaxial Ba Lun end face.
Embodiment:
Below in conjunction with accompanying drawing, the present invention is described in detail:
As Figure 1-3, the present invention is based on the directed electric bridge of coaxial line Ba Lun and lumped parameter work of resistance parallel circuit, Figure 1 shows that the schematic diagram of the directed electric bridge of combination based on coaxial Ba Lun and work of resistance parallel circuit, P1 port 2 and P2 port one are straight-through ports, and P3 port 3 is coupling/isolated port.Resistance and patch capacitor 8 form sling work of resistance parallel circuit, and during the transmission of signal forward, P1 port 2 is input port, exports to P3 port 3 through a work of resistance point rear section coupling power, and part exports by P2 port one is straight-through; When signals reverse is transmitted, P2 port one is input port, and P3 port 3 is isolated port, and signal power exports primarily of P1 port 2 is straight-through.The discontinuity that coaxial Ba Lun converts to micro strip line easily evokes high order harmonic component, makes actual parameter off-design, also can worsen directivity and the degree of coupling of electric bridge, increases straight-through loss.
Coaxial Ba Lun end face 12 and the first micro strip 6 clearance control, at 0.05 ~ 0.1mm, ensure that the lap of splice of inner wire and the first micro strip 6 is 0.3 ~ 0.35mm.At utmost can ensure the interconnecting transfer effect of coaxial cable 4 to micro strip Whole frequency band.Be provided with U-type groove absorber 7 in cavity, coaxial cable 4 be socketed with magnetic core 5.
The present invention introduces the impedance matching adjusting device designing technique based on the micro-band of suspension and tuning screw combination, work of resistance parallel circuit is realized to suspend micro-band, under the micro-band of suspension, Founder arranges tuning screw 9 to coaxial microband transform node, effectively improves the matching problem of coaxial cable 4 to micro-band conversion.The most of power line suspending micro-band concentrates in air, and the tuning screw 9 pairs of electromagnetic fields being positioned at the micro-band below of suspension produce perturbation, is equivalent to increase capacitive or perceptual effect, reaches the object of impedance adjustment coupling.Signal transmissions validity based on the directed electric bridge of this impedance matching adjusting device designing technique improves, and the degree of coupling and directivity are improved simultaneously, and mechanical tuning device is simple, and cost is low, and efficiency is high, reliable in quality, is beneficial to and improves product yield and enhance productivity.
Suspend micro-band to suspend based on band line technology, dielectric layer front printed circuit, and make printed resistor, surface mount patch capacitor 8, form work of resistance parallel circuit, do not metallize in the dielectric layer back side, liftoff unsettled certain altitude, fills air dielectric layer 11.
Suspend micro-band and be respectively the first micro strip 6 and the second micro strip 10 containing two panels, cavity one end is pasted onto with double-tube glue, first micro strip 6, second micro strip 10 installation position is equipped with certain altitude difference, upper strata first micro strip 6 interconnects with the inner wire of coaxial cable 4, simultaneously with P1 port 2, P3 port 3 two-port interconnects, and lower floor second micro strip 10 and coaxial cable 4 outer conductor interconnects, while and interconnection between cavities.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (8)
1. the directed electric bridge based on coaxial sling Transformation Matching, it is characterized in that, comprise cavity, coaxial cable, the first micro strip, the second micro strip and adjusting device, U-type groove absorber is provided with in described cavity, described coaxial cable one end is fixed on cavity by joint, the internal and external conductor of the coaxial cable other end snaps on described first micro strip, the second micro strip respectively, and adjusting device is screwed in by the cavity back side, is positioned at the below of described first micro strip.
2. a kind of directed electric bridge based on coaxial sling Transformation Matching as claimed in claim 1, it is characterized in that, described first micro strip, the second micro strip are pasted onto cavity one end with double-tube glue respectively, first micro strip, the second micro strip installation position are equipped with certain altitude difference, the inner wire of upper strata first micro strip and coaxial cable interconnects, simultaneously and P1, P3 two-port interconnect, lower floor second micro strip and coaxial cable outer conductor interconnect.
3. a kind of directed electric bridge based on coaxial sling Transformation Matching as claimed in claim 1, it is characterized in that, described directed electric bridge is externally provided with three interconnect port P1, P2, P3, port P1 and P3 are two prevention at radio-frequency port be connected on micro strip, and port P2 is connected to Ba Lun imbalance end.
4. a kind of directed electric bridge based on coaxial sling Transformation Matching as claimed in claim 3, it is characterized in that, described port P1, P2 is straight-through port, P3 is coupling/isolated port, and when signal forward transmits, P1 is input port, be coupled to P3 port via work of resistance parallel circuit part power signal, another part power signal is through the straight-through output of P2 port; When signal inversion is transmitted, P2 port is input port, power signal through Ba Lun imbalance to balance conversion, the anti-phase two-way power signal of constant amplitude is obtained in balance end, two-way power signal to disappear mutually at P3 port respectively through merit parallel circuit and realizes isolation, and Partial Power signal exports through P1 port is straight-through.
5. a kind of directed electric bridge based on coaxial sling Transformation Matching as claimed in claim 1 or 2, it is characterized in that, respectively prefabricated merit parallel circuit on described first micro strip, the second micro strip, do not metallize in the back side, electric capacity is positioned on the first micro strip, first micro strip, the second micro strip double-tube glue are pasted onto on the relevant position of cavity one end differing heights, and the first micro strip, the second micro strip periphery are fixed on cavity, to the unsettled certain distance of cavity bottom in the middle of the first micro strip.
6. a kind of directed electric bridge based on coaxial sling Transformation Matching as claimed in claim 1, it is characterized in that, described coaxial cable one end is fixed on cavity by joint, the internal and external conductor of the other end snaps on described first micro strip, the second micro strip respectively, inner wire is connected on the first micro strip by soldering, outer conductor is connected with the second micro strip by one section of gold ribbon being pressed in doubling repeatedly, to ensure good contact.
7. a kind of directed electric bridge based on coaxial sling Transformation Matching as described in claim 1 or 6, is characterized in that, described coaxial cable is socketed with magnetic core.
8. a kind of directed electric bridge based on coaxial sling Transformation Matching as claimed in claim 1, it is characterized in that, described adjusting device is 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 |
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| 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 |
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| Publication Number | Publication Date |
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| CN104752801A true CN104752801A (en) | 2015-07-01 |
| CN104752801B CN104752801B (en) | 2017-08-11 |
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| 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106816679A (en) * | 2017-03-24 | 2017-06-09 | 西安科技大学 | A kind of orientation electric bridge based on parallel-plate transmission line |
| CN112003570A (en) * | 2020-08-31 | 2020-11-27 | 中电科仪器仪表有限公司 | Millimeter wave noise source with high-frequency broadband and preparation method thereof |
Citations (4)
| 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 |
| US20060001505A1 (en) * | 2004-06-30 | 2006-01-05 | Fojas Uriel C | Directional bridge coupler |
| 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 |
-
2015
- 2015-04-20 CN CN201510188212.1A patent/CN104752801B/en not_active Expired - Fee Related
Patent Citations (4)
| 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 |
| US20060001505A1 (en) * | 2004-06-30 | 2006-01-05 | Fojas Uriel C | Directional bridge coupler |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106816679A (en) * | 2017-03-24 | 2017-06-09 | 西安科技大学 | A kind of orientation electric bridge based on parallel-plate transmission line |
| CN112003570A (en) * | 2020-08-31 | 2020-11-27 | 中电科仪器仪表有限公司 | Millimeter wave noise source with high-frequency broadband and preparation method thereof |
| 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 |
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| CN104752801B (en) | 2017-08-11 |
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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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Granted publication date: 20170811 Termination date: 20210420 |