CN203883870U - Amplitude equalizer - Google Patents
Amplitude equalizer Download PDFInfo
- Publication number
- CN203883870U CN203883870U CN201420166853.8U CN201420166853U CN203883870U CN 203883870 U CN203883870 U CN 203883870U CN 201420166853 U CN201420166853 U CN 201420166853U CN 203883870 U CN203883870 U CN 203883870U
- Authority
- CN
- China
- Prior art keywords
- microstrip line
- circuit microstrip
- short circuit
- open circuit
- amplitude equalizer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model belongs to the technical field of communication equipment, and specifically relates to an amplitude equalizer. The amplitude equalizer comprises a main transmission line, a chip resistor and a resonant cell, the main transmission line is connected with the resonant cell through the chip resistor, the resonant cell comprises a chip capacitor, a short circuit microstrip line and an open circuit microstrip line used for frequency fine tuning, and the chip resistor, the chip capacitor and the open circuit microstrip line are all connected with the short circuit microstrip line. According to the utility model, an inductor is replaced by the short circuit microstrip line, the reliability of the circuit is improved, at the same time, one open circuit microstrip line used for frequency fine tuning is added, the size of products is greatly reduced on the basis that the resonant frequency is continuously adjustable, and the amplitude equalizer is simple in structure and high in integration degree.
Description
Technical field
The utility model belongs to communication equipment technical field, is specifically related to a kind of amplitude equalizer.
Background technology
When signal transmits in device or system, device or system have different responses to different frequencies, inevitably can make signal distort, and the device that compensates this distortion is exactly equalizer, and common equalizer often has two kinds of implementations at present:
One as shown in Figure 1, a resistance 12 in parallel on main transmission line 11, the parallel resonance unit 13 of a lumped parameter of another termination of resistance 12, then links together with ground.This amplitude equalizer is when arrowband uses, and the value of components and parts is more discrete, can not reach the desirable resonance frequency needing, and the use of inductance can make the high low temperature of whole circuit performance change greatly, reliability reduction.
Another kind as shown in Figure 2, a film resistor 22 in parallel on main transmission line 21, long open circuit microstrip line of film resistor 22 another termination, form resonant element 23, the amplitude equalizer of this kind of distributed constant, when frequency is lower (as conventional mobile communication frequency range), resonant circuit size is very large, is unfavorable for integrated.
Summary of the invention
The purpose of this utility model is exactly the deficiency existing in order to solve above-mentioned background technology, and the amplitude equalizer that a kind of volume is little, reliability is high is provided.
The technical solution adopted in the utility model is: a kind of amplitude equalizer, comprise main transmission line, Chip-R and resonant element, described main transmission line is connected with resonant element by Chip-R, described resonant element comprises patch capacitor, short circuit microstrip line and the open circuit microstrip line for frequency trim, and described Chip-R, patch capacitor and open circuit microstrip line are all connected short circuit microstrip line.
The utility model, by replacing inductance with short circuit microstrip line, has increased the reliability of circuit, has increased the open circuit microstrip line that frequency trim is used simultaneously, has greatly dwindled small product size realizing on the continuously adjustable basis of resonance frequency, and simple in structure, integrated degree is high.
Brief description of the drawings
Fig. 1 is a kind of structural representation of prior art.
Fig. 2 is the another kind of structural representation of prior art.
Fig. 3 is structural representation of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, is convenient to be well understood to the utility model, but they do not form and limit the utility model.
As shown in Figure 3, the utility model comprises main transmission line 31, Chip-R 32 and resonant element, described main transmission line 31 is electrically connected with resonant element by Chip-R 32, described resonant element comprises patch capacitor 33, short circuit microstrip line 35 and the open circuit microstrip line 34 for frequency trim, and described Chip-R 32, patch capacitor 33 and open circuit microstrip line 34 are all electrically connected with short circuit microstrip line 35.Wherein one end open circuit of described open circuit microstrip line 34 finger microstrip lines, short circuit microstrip line refers to a wherein terminal shortcircuit of microstrip line, and the microstrip line 34 of opening a way in this patent is electrically connected with short circuit microstrip line 35, and their other one end is open circuit and short circuit respectively just.
The utility model adopts the resonant element of lumped parameter and the resonant element set of distributed constant, increase seldom with the circuit phase specific volume of full lumped parameter, significantly dwindle with the equalizer phase specific volume of full distributed constant, this equalizer has the continuously adjustable function of resonance frequency simultaneously.When application, first adopt lumped parameter design, then calculate equivalent short circuit micro belt line width and the length of inductance by specific purpose tool.If microstrip line is long, increase capacitance, shorten microstrip line length simultaneously, this work repeats, until microstrip line length meets setting range.For the ease of fine setting aborning, be used for compensating the inconsistency of processing, can in circuit, introduce open circuit microstrip line in parallel.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art person, do not departing under the prerequisite of the utility model principle; can also make some improvement distortion, these improvement and distortion also should be considered as protection range of the present utility model.The content not being described in detail in this specification belongs to the known prior art of professional and technical personnel in the field.
Claims (1)
1. an amplitude equalizer, comprise main transmission line (31), Chip-R (32) and resonant element, described main transmission line (31) is connected with resonant element by Chip-R (32), it is characterized in that: described resonant element comprises patch capacitor (33), short circuit microstrip line (35) and the open circuit microstrip line (34) for frequency trim, described Chip-R (32), patch capacitor (33) and open circuit microstrip line (34) are all connected short circuit microstrip line (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420166853.8U CN203883870U (en) | 2014-04-04 | 2014-04-04 | Amplitude equalizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420166853.8U CN203883870U (en) | 2014-04-04 | 2014-04-04 | Amplitude equalizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203883870U true CN203883870U (en) | 2014-10-15 |
Family
ID=51684329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420166853.8U Expired - Fee Related CN203883870U (en) | 2014-04-04 | 2014-04-04 | Amplitude equalizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203883870U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106027435A (en) * | 2016-07-29 | 2016-10-12 | 成都四威功率电子科技有限公司 | Adjustable equalizer |
| CN109150118A (en) * | 2018-08-30 | 2019-01-04 | 电子科技大学 | A kind of linearizer for travelling-wave tubes power amplifier pre-distortion |
-
2014
- 2014-04-04 CN CN201420166853.8U patent/CN203883870U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106027435A (en) * | 2016-07-29 | 2016-10-12 | 成都四威功率电子科技有限公司 | Adjustable equalizer |
| CN106027435B (en) * | 2016-07-29 | 2023-02-17 | 成都四威功率电子科技有限公司 | Adjustable equalizer |
| CN109150118A (en) * | 2018-08-30 | 2019-01-04 | 电子科技大学 | A kind of linearizer for travelling-wave tubes power amplifier pre-distortion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 |