CN204029963U - Microwave narrow band high power equalizer - Google Patents
Microwave narrow band high power equalizer Download PDFInfo
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- CN204029963U CN204029963U CN201420467270.9U CN201420467270U CN204029963U CN 204029963 U CN204029963 U CN 204029963U CN 201420467270 U CN201420467270 U CN 201420467270U CN 204029963 U CN204029963 U CN 204029963U
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- high power
- narrow band
- equalizer
- microstrip line
- microwave
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Abstract
The utility model provides a kind of microwave narrow band high power equalizer, belong to microwave passive component technical field, comprise two identical straps resistance structure (1) and microstrip line (2), by microstrip line (2) connection between two identical straps resistance structure (1).The utility model is by connecting two identical strap resistance structures by microstrip line, the reflection that impedance variation is caused is cancelled out each other, thus ensure that equalizer full frequency band (1.2GHz ~ 1.6GHz) standing wave is less than 1.2, to meet specific amplitude equalization request.
Description
Technical field
The utility model relates to a kind of microwave narrow band high power equalizer, belongs to microwave passive component technical field.
Background technology
In existing microwave transmission system, because the transmission characteristic (mainly amplitude) of microwave active device (as LNA, PA etc.) and microwave passive component (as microwave transmission line etc.) is with frequency change, cause the distortion of bandwidth transmission signals.In order to revise this distortion, need amplitude equalizer.When the solution of low frequency, small-power amplitude equalizer can be applicable to high frequency (microwave), high-power situation, due to the limitation of series resistance and series inductance etc., realize difficulty larger.
Utilize parallel coupled line, can directional coupler be made, be coupled out characteristic frequency (coupled section length is 1/4 wavelength) signal from main transmission line.The degree of coupling is determined by coupling line spacing: pitch smaller, and the degree of coupling increases.Two-wire parallel coupled line frequency response curve is substantially fixing, can not meet specific amplitude equalization requirement.
Summary of the invention
The utility model provides a kind of microwave narrow band high power equalizer, to solve the more difficult realization under high frequency and high-power situation existed in the distortion correction technique of existing microwave transmission system, the problem that cannot meet specific amplitude equalization request, the utility model adopts following technical scheme for this reason:
A kind of microwave narrow band high power equalizer, comprises two identical strap resistance structures and microstrip line, is connected between two identical strap resistance structures by microstrip line.
The technical scheme that the utility model provides is by connecting two identical strap resistance structures by microstrip line, the reflection that impedance variation is caused is cancelled out each other, thus ensure that equalizer full frequency band (1.2GHz ~ 1.6GHz) standing wave is less than 1.2, to meet specific amplitude equalization request.Adopt multi-thread parallel coupling tape to hinder structure, adjust stiffness of coupling at different levels and length of transmission line can adjust main transmission line frequency response curve, strap resistance structure output coupled signal high power load absorbs, thus achieves and bear high power requirement.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of microwave narrow band high power equalizer described in the utility model;
Fig. 2 is the principle schematic of the microstrip line that the circuit printing plate of microwave narrow band high power equalizer described in the utility model is made;
Fig. 3 is the emulation S parameter schematic diagram of microwave narrow band high power equalizer described in the utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Provide a kind of microwave narrow band high power equalizer in embodiment of the present utility model, comprise between two identical strap resistance structures 1 and microstrip line 2, two identical straps resistance structures 1 and being connected by microstrip line 2.
Particularly, shown in Fig. 2 is the microstrip line that whole circuit printing plate is made, and is the Signal transmissions between microstrip line.The multi-thread parallel coupling tape formed by being hindered structure 1 by two identical straps hinders structure, common strap resistance joint is expanded to multistage strap resistance joint (can adopt the structure of four joints in this embodiment), centered by the length often saving microstrip line 2 about frequency 1/4 wavelength, most deutomerite connects 50 Ω power terminations by centre cap.Each joint coupling coefficient, length of transmission line and minor details load tap position are determined by required equalizer curve.By adjusting stiffness of coupling at different levels and length of transmission line can adjust main transmission line frequency response curve.Strap resistance structure output coupled signal high power load absorbs.Further, owing to have employed high power load, main transmission line is 50 Ω microstrip lines, thus achieves high power (>2000W) and low-loss (<0.3dB).If desired realize concrete mode provides with this different operating frequency or equalizer curve, then the method that each joint coupling coefficient, length of transmission line and minor details load tap method for determining position can provide according to this embodiment arranges the length of corresponding microstrip line 2.Shown in Fig. 2 is the circuit theory of the microwave narrow band high power equalizer that this embodiment provides, and shown in Fig. 3 is the emulation S parameter of the microwave narrow band high power equalizer that this embodiment provides, and abscissa wherein represents frequency.
Further, main transmission line characteristic impedance is 50 Ω, ensure that the outer standing wave of strap resistance joint band is good, and band standing internal wave can be deteriorated due to the impact be coupled.Two duplicate strap resistance structures are connected by 50 Ω 1/4 wave microstrip lines, and the reflection caused due to impedance variation is cancelled out each other, thus ensures that equalizer full frequency band (1.2GHz ~ 1.6GHz) standing wave is less than 1.2.
Following table is depicted as L-band narrow band high power amplitude equalizer exemplar measured data:
The above; be only the utility model preferably embodiment; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model embodiment discloses; the change that can expect easily or replacement, all should be encompassed within protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claim.
Claims (3)
1. a microwave narrow band high power equalizer, it is characterized in that, comprise two identical straps resistance structure (1) and microstrip line (2), by microstrip line (2) connection between two identical straps resistance structure (1).
2. microwave narrow band high power equalizer according to claim 1, is characterized in that, frequency 1/4 wavelength centered by the length of microstrip line (2).
3. microwave narrow band high power equalizer according to claim 1, it is characterized in that, structure is hindered by strap, frequency of fadings signal coupling will be needed to export, high power load is utilized to absorb, because power absorption components is high power load, but not series resistance, make equalizer can be operated in high-power state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420467270.9U CN204029963U (en) | 2014-08-18 | 2014-08-18 | Microwave narrow band high power equalizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420467270.9U CN204029963U (en) | 2014-08-18 | 2014-08-18 | Microwave narrow band high power equalizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204029963U true CN204029963U (en) | 2014-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201420467270.9U Active CN204029963U (en) | 2014-08-18 | 2014-08-18 | Microwave narrow band high power equalizer |
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| CN (1) | CN204029963U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129569A (en) * | 2016-05-19 | 2016-11-16 | 中电科仪器仪表有限公司 | A kind of power-adjustable equalizer with composite link |
| CN111220856A (en) * | 2020-03-18 | 2020-06-02 | 中国舰船研究设计中心 | Narrow-spectrum high-power microwave electromagnetic environment characteristic parameter measuring device |
-
2014
- 2014-08-18 CN CN201420467270.9U patent/CN204029963U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129569A (en) * | 2016-05-19 | 2016-11-16 | 中电科仪器仪表有限公司 | A kind of power-adjustable equalizer with composite link |
| CN106129569B (en) * | 2016-05-19 | 2020-04-28 | 中电科仪器仪表有限公司 | Adjustable power equalizer with combined link |
| CN111220856A (en) * | 2020-03-18 | 2020-06-02 | 中国舰船研究设计中心 | Narrow-spectrum high-power microwave electromagnetic environment characteristic parameter measuring device |
| CN111220856B (en) * | 2020-03-18 | 2022-02-01 | 中国舰船研究设计中心 | Narrow-spectrum high-power microwave electromagnetic environment characteristic parameter measuring device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |