CN2643581Y - Multiband microwave small-sized mixed bridge - Google Patents
Multiband microwave small-sized mixed bridge Download PDFInfo
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- CN2643581Y CN2643581Y CNU032626983U CN03262698U CN2643581Y CN 2643581 Y CN2643581 Y CN 2643581Y CN U032626983 U CNU032626983 U CN U032626983U CN 03262698 U CN03262698 U CN 03262698U CN 2643581 Y CN2643581 Y CN 2643581Y
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Abstract
The utility model relates to a multi-frequency and small-sized microwave bridge, consisting of three dielectric slabs, namely 5, 7 and 9, two layers of coupled circuit boards, namely 6 and 8, a RF input port 1, a mainline output port 2, an isolation port 3 and a coupled output port 4. Wherein, the dielectric slabs and the coupled circuit boards are in alternative distribution, with the two layers of coupled circuit boards sandwiched respectively among the three layers of dielectric slabs. Moreover, the RF input port 1 and the mainline output port 2 are connected with the coupled circuit board (8), and the isolation port 3 and the coupled output port 4 are connected with the coupled circuit board (6), with the output amplitude of both the coupled output port 4 and the mainline output port 2 as 3dB but the phase position 90-degree away, and thereby various connections of the four ports can make of components of various purposes. The Bridge has the advantages of small volume, light weight, selectable bandwidth and favorable performance in a plurality of microwave regions, and thereby can widely be used for the wiring system in mobile communication base station or repeater station.
Description
Technical field:
The utility model relates to microwave technical field, and the small-sized mixed electrical bridge of specifically a kind of multiband microwave can be applicable to the wiring system of mobile communication base station or repeater.
Background technology:
Existing mixed electrical bridge technology generally all is the reentry formula coaxial line directional coupler circuit that adopts as shown in Figure 6, or branch's oriented coupler of coupler wire circuit shown in Figure 7, makes the Microwave Hybrid electric bridge.In Fig. 6, reentry formula coaxial line directional coupler circuit is made of two parallel coaxial lines, the inner wire of two coaxial lines does not contact mutually, and outer conductor welds together, and forms a bitubular conductor 11, by dielectric support bitubular conductor is packed in the can, four port ones, 2,3,4 are connected with external circuit, and wherein 1 is the RF input port, 2 delivery outlets of serving as theme, 3 is isolated port, and 4 are the coupling delivery outlet.See " structure of modern microwave filter and design ", sweet an ancient exorcistic ceremony, Wu Wanchun, Science Press, 1974.In Fig. 7, branch's oriented coupler of coupler wire circuit is made up of branch's oriented coupler of coupler wire circuit of little band or strip line.Wherein 1 is the RF input port, the 3rd, and isolated port, the 4th, the coupling delivery outlet, the 2nd, the main line delivery outlet, the 12nd, the air dielectric layer, the 6th, the branch line coupling circuit, the 7th, dielectric layer, the distribution of this coupling circuit 6 and dielectric layer 7 is individual layer.See M.Muraguchi, T.Yukitake and Y.Naito, optimum Design of 3-dB Branch LineCouplers Using Microstrip Ling, MTT-31 Arg.1983.pp674-678.More than two kinds of coupler circuits have all that volume is big, the shortcoming of Heavy Weight, can't adapt to the special requirement on some microwave engineering.
Technology contents:
The purpose of this utility model is to overcome the defective of prior art, provides a kind of multiband microwave small-sized mixed electrical bridge, to satisfy the special requirement on the microwave engineering.
The technical scheme that realizes the utility model purpose is as follows:
Use Circuit theory and the technology and the computer aided design cad of multilayer dielectricity plate microwave coupled transmission line, utilize odd mode impedance Z
0o, even mode impedance Z
0eMathematical relationship with the degree of coupling and standing-wave ratio VSWR, and the tolerance analysis of machining accuracy and technical indicator, set up the adjusting mechanism and the model of impedance, the degree of coupling and phase shift, optimal design multilayer dielectricity plate and double-deck coupling line circuit structure, whole electric bridge comprises three layers of dielectric-slab, two-layer coupling line circuit board and four coaxial N (K) type connectivity port, i.e. RF input port, main line output port, isolated port, coupling output port.Dielectric-slab and coupling line circuit board are alternately distributed, and two-layer coupling line circuit board is clipped in respectively between three layers of dielectric-slab.RF input port and main line output port are connected an end of one deck coupling line circuit board, and isolated port and coupling output port are connected the other end of another layer coupling line circuit board, see Fig. 1.
The output amplitude of above-mentioned coupling output port and main line output port is 3dB, phase phasic difference 90 degree.
The position of above-mentioned main line output port and isolated port, perhaps the position of RF input port and coupling output port all can be exchanged.
The utility model compared with prior art, its volume and weight reduces greatly, comparative parameter as shown in Table 1 and Table 2.Wherein:
Table 1 is that the parameter of the utility model and existing reentry formula coaxial line mixed electrical bridge compares
Table 2 is that the parameter of the utility model and existing branch line mixed electrical bridge compares
Table 1
| Model | Reentry formula coaxial line mixed electrical bridge (prior art) | 0.2/04 the small-sized mixed electrical bridge of multiband microwave (the utility model) | Comparative result |
| Frequency (MHz) | 225～396 | 225～396 | Identical |
| Insertion Loss (contain and distribute loss) (dB) (nominal value is 3dB) | Coupling output port 2.398-2.986 main line output port 3.472-4.823 | Coupling output port 2.934-4.588 main line output port 2.065-3.487 | Be worse than prior art slightly |
| Phase shift (nominal value is 90 °) | 90.340-90.996 | 89.834-90.074 | Be better than prior art |
| VSWR | 1.253-1.647 | 1.072-1.170 | Be better than prior art |
| Isolation (dB) (min) | 14.697 | 23.204 | Be better than prior art |
| Maximum is allowed input power (W) | 100 | 100 | Identical |
| Temperature range (℃) | -25～60 | -25～60 | Identical |
| Relative humidity (%) | 0～90 | 0～90 | Identical |
| Weight (g) (not comprising joint) | 520 | 226 | It is 43% of prior art |
| Overall dimension (mm) (not comprising joint) | 225*41*31 | 130*29*25 | It is 33% of prior art |
| Joint length (mm) and weight (g) | 18，18 | 18，18 | Identical |
| Interface mode | JL18-KF(50Ω) | JL16-KF(50Ω) | Identical |
| Material | LY-12 | LY-12 | Identical |
Table 1 measured data shows that volume of the present utility model only is equivalent to 33% of prior art, and weight only is equivalent to prior art 43%, and electrical properties such as its phase shift, isolation all are better than existing reentry formula coaxial line mixed electrical bridge.
Table 2
| Model | 1.88/192 branch line mixed electrical bridge (prior art) | 1.8/2.5 the small-sized mixed electrical bridge of multiband microwave (the utility model) | Comparative result |
| Frequency (MHz) | 1880～1920 (relative bandwidths 2.1%) | 1850～2500 (relative bandwidths 30%) | Relative bandwidth is much better than prior art |
| Insertion Loss (contain and distribute loss) (dB) (nominal value is 3dB) | Coupling output port 2.89-3.087 main line output port 3.186-3.262 | Coupling output port 2.772-3.146 main line output port 2.994-3.303 | Be worse than prior art slightly |
| Phase shift (nominal value is 90 °) | 89.41-90.52 | 89.231-89.754 | Basic identical |
| VSWR | 1.034-1.109 | 1.032-1.239 | Be worse than prior art slightly |
| Isolation (dB) (min) | 26.133 | 23.793 | Be worse than prior art slightly |
| Maximum is allowed input power (W) | 100 | 100 | Identical |
| Temperature range (℃) | -25～60 | -25～60 | Identical |
| Relative humidity (%) | 0～90 | 0～90 | Identical |
| Weight (g) (not comprising joint weight) | 114 | 47 | 41% of suitable prior art |
| Overall dimension (mm) (not comprising joint) | 54*51*20 | 47*19*23 | 37% of suitable prior art |
| Joint length (mm) and weight (g) | 18 18 | 18 18 | Identical |
| Interface mode | NK(50Ω) | NK(50Ω) | Identical |
| Material | LY-12 | LY-12 | Identical |
Table 2 actual measurement shows that volume of the present utility model only is equivalent to 37% of prior art, and weight only is equivalent to prior art 41%.Frequency band is wider than prior art far away, can be widely used in the broadband engineering.
Description of drawings:
Fig. 1 is the utility model structure chart
Fig. 2 is the utility model rough schematic view
Fig. 3 is the schematic diagram that the utility model is used for the circular polarized antenna feeding network
Fig. 4 is the schematic diagram that the utility model is used as power divider
Fig. 5 is that the utility model is used as along separate routes and closes road two paths of signals schematic diagram
Fig. 6 is the structure chart of existing reentry formula coaxial line mixed electrical bridge
Fig. 7 is the structure chart of existing branch mixed electrical bridge
Embodiment:
As shown in Figure 1, the utility model utilizes odd mode impedance Z on the basis of analysis-by-synthesis microwave coupled transmission line theory and technology
0o, even mode impedance Z
0eMathematical relationship with the degree of coupling and standing-wave ratio VSWR, and the tolerance analysis of machining accuracy and technical indicator, set up the adjusting mechanism and the model of impedance, the degree of coupling and phase shift, optimal design the small-sized mixed electrical bridge of multiband microwave of multilayer dielectricity plate and double-deck coupling line circuit structure.This electric bridge comprises dielectric layer 5, dielectric layer 7, dielectric layer 9, coupling line circuit layer 6, coupling line circuit layer 8, and four coaxial N (K) type connector, i.e. RF input port 1, coupling output port 4, main line output port 2 and isolated port 3.Dielectric layer and coupling line circuit layer are alternately distributed, accompany coupling line circuit layer 6 between dielectric layer 5 and the dielectric layer 7, accompany coupling line circuit layer 8 between dielectric layer 7 and the dielectric layer 9, each is identical with the dielectric constant of layer dielectric-slab, and the dielectric constant of each layer dielectric-slab is not necessarily identical.RF input port 1 and main line output port 2 are connected an end of coupling line circuit layer 8, and isolated port 3 and coupling output port 4 are connected the other end of coupling line circuit layer 6.The amplitude of coupling output port 4 and main line output port 2 is 3dB, phase phasic difference 90 degree.Can adjust odd mode impedance Z according to the requirement of impedance, the degree of coupling in the application
0o, even mode impedance Z
0eAnd phase shift, can reach the requirement of the degree of coupling, standing-wave ratio VSWR, phase shift and volume and weight thereof.Table 3 has provided the index parameter of the utility model different model.
Table 3
| Model | 0.3/0.4 | 0.8/1.0 | 1.8/2.5 |
| Frequency (MHz) | 344～396 | 800～1000 | 1880～2500 |
| Insertion Loss (contain and distribute loss) (dB) | ≤3.4 | ≤3.4 | ≤3.4 |
| Phase shift (°) | 90±1 | 90±1 | 90±1.5 |
| VSWR | ≤1.2 | ≤1.3 | ≤1.3 |
| Isolation (dB) | ≥20 | ≥20 | ≥20 |
| Maximum is allowed input power (W) | 100 | 100 | 100 |
| Temperature range (℃) | -25～60 | -25～60 | -25～60 |
| Relative humidity (%) | 0～90 | 0～90 | 0～90 |
| Weight (g) (not comprising joint) | 226 | 75 | 47 |
| Overall dimension (mm) (not comprising joint) | 130*29*25 | 65*19*25 | 47*19*23 |
| Joint length (mm) and weight (g) | 18 18 | 18 19 | 18 19 |
| Interface mode | JL16-KF(50Ω) | NK(50Ω) | NK(50Ω) |
| Material | LY-12 | LY-12 | LY-12 |
The utility model contour structures as shown in Figure 2, A is a mixed electrical bridge, in actual applications, by the difference of these four ports being connected the device that can constitute different purposes.
As shown in Figure 3, the main line output port 2 of the small-sized mixed electrical bridge A of multiband microwave of the present utility model and the position of isolated port 3 are exchanged, two input ports of coupling output port 4 and main line output port 2 access circular polarized antennas 10, as the circular polarized antenna feeding network, make it produce corresponding circularly polarised wave.This coupling output port 4 and main line output port 2 are two 3dB output ports, phase difference 90 degree.
As shown in Figure 4, the main line output port 2 of the small-sized mixed electrical bridge A of multiband microwave of the present utility model is exchanged with the position of isolated port 3, make RF input port 1 and isolated port 3 be positioned at the side of the small-sized mixed electrical bridge A of multiband microwave, main line output port 2 and coupling output port 4 are positioned at the opposite side of electric bridge A, and do not require phase difference 90 degree between main line output port 2 and the coupling output port 4, then can be used as the 3dB power divider.
As shown in Figure 5, the main line output port 2 of the small-sized mixed electrical bridge A of multiband microwave of the present utility model and the position of isolated port 3 are exchanged, make the input port of RF input port 1 as one road signal RF-1, isolated port 3 is as the input port of another road signal RF-2, RF-1 input signal and RF-2 input signal are through the distribution of mixed electrical bridge A, after separately input power is divided into half, close road output by output port again, the shunt that then can be used for two paths of signals with close the road, this moment, the output signal of main line output port 2 and coupling output port 4 was (RF-1+RF-2)/2.So just with two one-channel signals, the effect through electric bridge is transformed to the two-way composite signal, is transferred to signal respectively and closes road system 13 and 14.
Claims (3)
1, the small-sized mixed electrical bridge of a kind of multiband microwave, comprise dielectric-slab, coupling line circuit board and RF input port (1), main line output port (2), isolated port (3) and coupling output port (4), it is characterized in that the coupling line circuit board is made as bilayer, dielectric-slab is made as three layers, coupling line circuit board (6), (8) and dielectric-slab (5), (7), (9) be alternately distributed, be that two-layer coupling line circuit board is clipped in respectively between three layers of dielectric-slab, RF input port (1) and main line output port (2) are connected an end of coupling line circuit board (8), and isolated port (3) and coupling output port (4) are connected the other end of coupling line circuit board (6).
2, the small-sized mixed electrical bridge of microwave as claimed in claim 1, the output amplitude of it is characterized in that being coupled output port (4) and main line output port (2) is 3dB, phase phasic difference 90 degree.
3, the small-sized mixed electrical bridge of microwave as claimed in claim 1 is characterized in that the position of main line output port (2) and isolated port (3), and perhaps the position of RF input port (1) and coupling output port (4) all can be exchanged, to constitute different application devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032626983U CN2643581Y (en) | 2003-08-29 | 2003-08-29 | Multiband microwave small-sized mixed bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032626983U CN2643581Y (en) | 2003-08-29 | 2003-08-29 | Multiband microwave small-sized mixed bridge |
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| Publication Number | Publication Date |
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| CN2643581Y true CN2643581Y (en) | 2004-09-22 |
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| CNU032626983U Expired - Fee Related CN2643581Y (en) | 2003-08-29 | 2003-08-29 | Multiband microwave small-sized mixed bridge |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904401A (en) * | 2014-04-08 | 2014-07-02 | 钟小茹 | Same-frequency combiner of 3dB electrical bridge with trapezoid separation rod |
| CN103904403A (en) * | 2014-04-08 | 2014-07-02 | 吴俊伟 | Identical-frequency combiner of 3 dB electric bridge with mutual interference portions |
| CN104733827A (en) * | 2015-04-14 | 2015-06-24 | 南京邮电大学 | High isolation microstrip branch line orientate coupler with short circuit section |
| CN107317083A (en) * | 2017-06-21 | 2017-11-03 | 西安电子科技大学 | Multilayer microstrip structure ultra wide band 3dB electric bridges |
| CN112448106A (en) * | 2019-08-30 | 2021-03-05 | 京东方科技集团股份有限公司 | Feed structure, microwave radio frequency device and antenna |
-
2003
- 2003-08-29 CN CNU032626983U patent/CN2643581Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904401A (en) * | 2014-04-08 | 2014-07-02 | 钟小茹 | Same-frequency combiner of 3dB electrical bridge with trapezoid separation rod |
| CN103904403A (en) * | 2014-04-08 | 2014-07-02 | 吴俊伟 | Identical-frequency combiner of 3 dB electric bridge with mutual interference portions |
| CN103904403B (en) * | 2014-04-08 | 2016-05-11 | 国家电网公司 | A kind of have a same frequency combiner of disturbing mutually the 3dB of portion electric bridge |
| CN103904401B (en) * | 2014-04-08 | 2016-05-25 | 国网山东省电力公司鄄城县供电公司 | A kind of same frequency combiner with trapezoidal declutcher control lever 3dB electric bridge |
| CN104733827A (en) * | 2015-04-14 | 2015-06-24 | 南京邮电大学 | High isolation microstrip branch line orientate coupler with short circuit section |
| CN107317083A (en) * | 2017-06-21 | 2017-11-03 | 西安电子科技大学 | Multilayer microstrip structure ultra wide band 3dB electric bridges |
| CN112448106A (en) * | 2019-08-30 | 2021-03-05 | 京东方科技集团股份有限公司 | Feed structure, microwave radio frequency device and antenna |
| CN112448106B (en) * | 2019-08-30 | 2022-04-26 | 京东方科技集团股份有限公司 | Feed structure, microwave radio frequency device and antenna |
| US11837796B2 (en) | 2019-08-30 | 2023-12-05 | Beijing Boe Sensor Technology Co., Ltd. | Feeding structure, microwave radio frequency device and antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |