CN204168257U - A kind of wideband microband amplitude equalizer - Google Patents
A kind of wideband microband amplitude equalizer Download PDFInfo
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- CN204168257U CN204168257U CN201420656874.8U CN201420656874U CN204168257U CN 204168257 U CN204168257 U CN 204168257U CN 201420656874 U CN201420656874 U CN 201420656874U CN 204168257 U CN204168257 U CN 204168257U
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Abstract
The utility model discloses a kind of wideband microband amplitude equalizer, comprise resonator, it is characterized in that, described resonator is transmission-line resonator, described transmission-line resonator comprises main transmission line, film resistor and microstrip line, and described main transmission line is provided with described film resistor and described microstrip line, described film resistor is connected with described microstrip line, described transmission-line resonator is made up of TEM transmission line section, and described TEM transmission line section is open-circuit line.The utility model can the amplitude-frequency that brings due to device loss such as transmission cable, frequency converter, amplifiers of effective compensation whole system inconsistent, the phenomenon particularly strengthened because loss in microwave signal transmission and amplification process increases with frequency; Can also effectively improve when carrying out signal transacting by intermediate-freuqncy signal, the larger amplitude unevenness degree that AD/DA process can produce, and radio-frequency head is after the upconversion of the signals balanced, than balanced at DA medium frequency output end, more can ensure to reach good phase place flatness.
Description
Technical field
The utility model relates to a kind of wideband microband amplitude equalizer, belongs to communication technical field.
Background technology
Along with the development of microwave material and technology, the bandwidth of the devices such as microstrip switch, amplifier, frequency mixer is more and more wider, but for gain and the such transmission characteristic of Insertion Loss, because microwave signal transmission loss is relevant with signal wavelength, the gain of device or Insertion Loss are difficult to accomplish in low frequency end and front end completely the same.In practical engineering application, the amplitude-frequency characteristic of wideband microwave device has fluctuating, normally gain reduces along with the increase of frequency, and fluctuating is had in frequency range, add the standing wave matching problem of upper element, the broadband microwave receiver be made up of microwave section assembly must have larger fluctuating, and this amplitude scintillation can reduce the signal to noise ratio of detected signal, thus the receiving sensitivity of influential system.
Equalizer mainly contains lumped parameter type, coaxial type, waveguide type and integrated transmission-line type four kinds of forms.Lumped parameter type, by the restriction of components and parts, is generally used for low-frequency range, is not suitable for high band; Coaxial type microwave equalizer is generally used for high-power circuit equilibrium; It is high-end that waveguide type is applicable to microwave frequency; And integrated transmission-line type microwave equalizer has the advantages such as little, lightweight, the convenient and solid-state circuit of volume is integrated.In addition, this integrated transmission-line type equalizer can utilize microwave circuit emulation technology to emulate fast, accurately, shortens
Amplitude equalizer effectively can compensate the amplitude-frequency inconsistency that whole system is brought due to devices such as transmission cable, frequency converter, amplifiers, the phenomenon particularly strengthened because loss in microwave signal transmission and amplification process increases along with frequency.And effectively can improve gain flatness at the appropriate location of radar transmitter radio frequency amplification system insertion amplitude-frequency equalizing network, index is met the demands, thus is conducive to the realization of entire system index.
Utility model content
For overcoming the defect that prior art exists, solve the technical problem of above-mentioned existence, the utility model provides a kind of wideband microband amplitude equalizer.
The utility model adopts following technical scheme: a kind of wideband microband amplitude equalizer, comprise resonator, it is characterized in that, described resonator is transmission-line resonator, described transmission-line resonator comprises main transmission line, film resistor and microstrip line, and described main transmission line is provided with described film resistor and described microstrip line, described film resistor is connected with described microstrip line, described transmission-line resonator is made up of TEM transmission line section, and described TEM transmission line section is open-circuit line.
Furthermore, the number of transmission-line resonator is 4.
Furthermore, the cascade of transmission-line resonator coupling forms.
Furthermore, the substrate of microstrip line is dielectric constant is 2.2, and thickness is Rogers RT/duroid 5880 substrate of 0. 254mm.
Furthermore, microstrip line spacing is more than or equal to 4 times of substrate thickness.
Furthermore, the width of microstrip line is 0.3mm.
Furthermore, main transmission line is the wide 50 Ω transmission lines of 0.77mm.
The beneficial effect that the utility model reaches: (1) can the amplitude-frequency that brings due to device loss such as transmission cable, frequency converter, amplifiers of effective compensation whole system inconsistent, the phenomenon particularly strengthened because loss in microwave signal transmission and amplification process increases with frequency; (2) effectively can improve amplitude unevenness degree, and make the signal after frequency conversion balanced at intermediate frequency end at radio-frequency head ratio, can ensure to reach good phase place flatness.
Accompanying drawing explanation
Fig. 1 is circuit structure principle schematic of the present utility model.
Fig. 2 is topological diagram of the present utility model.
Fig. 3 is the schematic diagram of an embodiment of the present utility model.
Fig. 4 is the application block diagram of the utility model in radio frequency source system.
The implication marked in figure: 1-main transmission line, 2-film resistor, 3-microstrip line.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.Following examples only for clearly the technical solution of the utility model being described, and can not limit protection range of the present utility model with this.
Figure 1 shows that circuit structure principle schematic of the present utility model, essence is a single detail amplitude balancing circuit, on main transmission line 1 primary equalization part by one section about the open circuit microstrip line 3 of λ/4 and a film resistor 2 form, frequency wavelength centered by λ.The open circuit microstrip line of λ/4 is connected with film resistor, forms the series resonant circuit that resonance frequency, quality factor, relative bandwidth and equilibrium quantity are adjustable.Resonance frequency can be changed by regulating the open circuit microstrip line of λ/4; By regulating the width of microstrip line and the resistance of film resistor, can change quality factor and relative bandwidth, wherein the impact of film resistor is main, and the impact of micro belt line width is secondary.The resonator bandwidth that resonance minor matters length is longer is narrower.Equilibrium quantity is one and all related parameter of resonance frequency, quality factor and relative bandwidth, and the formula do not determined especially can calculate, and is generally obtained by emulation, optimization.
Figure 2 shows that topological diagram of the present utility model, for the circuit that equilibrium quantity is larger, adopt the cascade of multiple single detail equalizing circuit coupling to form.
Fig. 3 is as preferred a kind of embodiment, and adopt the cascade of 4 single detail equalizing circuit couplings, employing thickness is Rogers RT/duroid 5880 substrate of 0. 254mm, and its dielectric constant is 2.2.Microstrip line edge electric field extends to both sides, and electric field extended distance approximates greatly 2h (h is substrate thickness).Therefore be coupled between line for avoiding, microstrip line spacing and micro-outer box limit span that brings to are from remaining more than 4 times of substrate thickness.Due to lines be less than 0.1 mm time, be difficult to ensure dimensional accuracy, therefore design micro-band minor matters get 0.3mm.Main transmission line is the wide 50 Ω transmission lines of 0.77mm.
Fig. 4, as a preferred embodiment, is the application block diagram of the utility model in radio frequency source system.Insert amplitude-frequency equalizing network in the appropriate location of radar transmitter radio frequency amplification system and effectively can improve gain flatness, index is met the demands, thus is conducive to the realization of entire system index.
Operation principle of the present utility model: a kind of microstrip broadband amplitude equalizer that the utility model provides effectively can compensate the amplitude-frequency inconsistency that whole system is brought due to devices such as transmission cable, frequency converter, amplifiers, the phenomenon particularly strengthened because loss in microwave signal transmission and amplification process increases along with frequency; During owing to carrying out signal transacting to intermediate-freuqncy signal, AD/DA process can produce larger amplitude unevenness degree, thus signal flatness after influential system up-conversion, a kind of microstrip broadband amplitude equalizer that the utility model provides effectively can carry out equilibrium at radio-frequency head to this amplitude unevenness degree, thus the amplitude equalization substituted at intermediate frequency end, can ensure to reach good phase place flatness.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model know-why; can also make some improvement and distortion, these improve and distortion also should be considered as protection range of the present utility model.
Claims (7)
1. a wideband microband amplitude equalizer, comprise resonator, it is characterized in that, described resonator is transmission-line resonator, described transmission-line resonator comprises main transmission line, film resistor and microstrip line, and described main transmission line is provided with described film resistor and described microstrip line, described film resistor is connected with described microstrip line, described transmission-line resonator is made up of TEM transmission line section, and described TEM transmission line section is open-circuit line.
2. a kind of wideband microband amplitude equalizer according to claim 1, is characterized in that, the number of described transmission-line resonator is 4.
3. a kind of wideband microband amplitude equalizer according to claim 2, is characterized in that, the cascade of described transmission-line resonator coupling forms.
4. a kind of wideband microband amplitude equalizer according to claim 2, is characterized in that, the substrate of described microstrip line is dielectric constant is 2.2, and thickness is Rogers RT/duroid 5880 substrate of 0. 254mm.
5. a kind of wideband microband amplitude equalizer according to claim 4, is characterized in that, described microstrip line spacing is more than or equal to 4 times of described substrate thickness.
6. a kind of wideband microband amplitude equalizer according to claim 5, is characterized in that, the width of described microstrip line is 0.3mm.
7. a kind of wideband microband amplitude equalizer according to claim 6, is characterized in that, described main transmission line is the wide 50 Ω transmission lines of 0.77mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420656874.8U CN204168257U (en) | 2014-11-06 | 2014-11-06 | A kind of wideband microband amplitude equalizer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420656874.8U CN204168257U (en) | 2014-11-06 | 2014-11-06 | A kind of wideband microband amplitude equalizer |
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| CN204168257U true CN204168257U (en) | 2015-02-18 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108540214A (en) * | 2018-03-23 | 2018-09-14 | 西安空间无线电技术研究所 | A kind of wideband phase equalization methods suitable for array transponder |
| CN110138353A (en) * | 2019-05-27 | 2019-08-16 | 肖泽 | 6~18GHz Wideband Equalizer circuit |
| CN111129680A (en) * | 2019-12-30 | 2020-05-08 | 南京邮电大学 | Broadband adjustable equalizer based on coaxial resonant cavity |
| CN111224907A (en) * | 2019-11-21 | 2020-06-02 | 中电科仪器仪表有限公司 | Large-bandwidth broadband variable frequency link amplitude equalization method |
| CN112636714A (en) * | 2020-12-18 | 2021-04-09 | 中国兵器装备集团上海电控研究所 | Broadband miniature amplitude equalizer, construction method and system |
| CN113193320A (en) * | 2021-04-20 | 2021-07-30 | 电子科技大学 | Stepping substrate integrated waveguide equalizer based on microwave resistor |
| CN114744388A (en) * | 2022-03-25 | 2022-07-12 | 电子科技大学 | Grounded coplanar waveguide spiral line defected ground structure gain equalizer |
| CN114899565A (en) * | 2022-05-26 | 2022-08-12 | 南京国睿防务系统有限公司 | Broadband high-power positive slope equalizer |
-
2014
- 2014-11-06 CN CN201420656874.8U patent/CN204168257U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108540214A (en) * | 2018-03-23 | 2018-09-14 | 西安空间无线电技术研究所 | A kind of wideband phase equalization methods suitable for array transponder |
| CN108540214B (en) * | 2018-03-23 | 2021-02-09 | 西安空间无线电技术研究所 | Broadband phase equalization method suitable for array transponder |
| CN110138353A (en) * | 2019-05-27 | 2019-08-16 | 肖泽 | 6~18GHz Wideband Equalizer circuit |
| CN111224907A (en) * | 2019-11-21 | 2020-06-02 | 中电科仪器仪表有限公司 | Large-bandwidth broadband variable frequency link amplitude equalization method |
| CN111129680A (en) * | 2019-12-30 | 2020-05-08 | 南京邮电大学 | Broadband adjustable equalizer based on coaxial resonant cavity |
| CN112636714A (en) * | 2020-12-18 | 2021-04-09 | 中国兵器装备集团上海电控研究所 | Broadband miniature amplitude equalizer, construction method and system |
| CN113193320A (en) * | 2021-04-20 | 2021-07-30 | 电子科技大学 | Stepping substrate integrated waveguide equalizer based on microwave resistor |
| CN114744388A (en) * | 2022-03-25 | 2022-07-12 | 电子科技大学 | Grounded coplanar waveguide spiral line defected ground structure gain equalizer |
| CN114899565A (en) * | 2022-05-26 | 2022-08-12 | 南京国睿防务系统有限公司 | Broadband high-power positive slope equalizer |
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| GR01 | Patent grant |