CN203326980U - A peripheral interface circuit capable of effectively removing signal differentials - Google Patents
A peripheral interface circuit capable of effectively removing signal differentials Download PDFInfo
- Publication number
- CN203326980U CN203326980U CN2013204125967U CN201320412596U CN203326980U CN 203326980 U CN203326980 U CN 203326980U CN 2013204125967 U CN2013204125967 U CN 2013204125967U CN 201320412596 U CN201320412596 U CN 201320412596U CN 203326980 U CN203326980 U CN 203326980U
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- differential
- radio
- input channel
- radio frequency
- peripheral interface
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Abstract
The utility model discloses a peripheral interface circuit capable of effectively removing signal differentials. The peripheral interface circuit comprises a capacitor C1, a capacitor C2 and a main chip. A first differential input port a and a second differential input port b of the main chip are connected with a first radio-frequency output port of a radio-frequency processing circuit through a first radio-frequency input channel. A first differential input port c and a second differential input port d of the main chip are connected with a second radio-frequency output port of the radio-frequency processing circuit through a second radio-frequency input channel. A first differential input line of the first radio-frequency input channel is connected in parallel with a second differential input line of the first radio-frequency input channel through the capacitor C1. A first differential input line of the second radio-frequency input channel is connected in parallel with a second differential input line of the second radio-frequency input channel through the capacitor C2. The differential mode-removing capacitors are utilized in the peripheral interface circuit, so that differential mode interferences of signals can be effectively removed, signal quality is effectively improved, equipment is protected to be safe; and the peripheral interface circuit is simple in structure and easy to realize.
Description
Technical field
The utility model relates to a kind of peripheral interface circuit that can effectively remove signal differential.
Background technology
When current electronic installation is used widely and is developed rapidly, the quality of electronic equipment and safety and performance are also progressively paid attention to, differential mode interference is the common a kind of interference signal of electronic equipment, it not only affects the normal operation of self circuit itself, also can enter other modules in the mode of conduction and radiation, pollute electromagnetic environment, and image documentation equipment normal operation, the safety of harm equipment, on the other hand, its existence also can produce electromagnetic interference signal, reduces signal quality, so must take some measures, gets rid of difference mode signal.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of utilization to remove differential mode capacitor, can effectively remove the differential mode interference in signal, effectively improves a kind of peripheral interface circuit that can effectively remove signal differential of signal quality.
The purpose of this utility model is achieved through the following technical solutions: a kind of peripheral interface circuit that can effectively remove signal differential, it comprises that first removes differential mode capacitor C1, second removes differential mode capacitor C2 and master chip, the first differential input end mouth a of master chip is connected with the first radio frequency output port of rf processing circuitry by the first radio frequency input channel respectively with the second differential input end mouth b, the first differential input end mouth c of master chip is connected with the second radio frequency output port of rf processing circuitry by the second radio frequency input channel respectively with the second differential input end mouth d, the first difference incoming line of the first radio frequency input channel is in parallel with the second difference incoming line of the first radio frequency input channel by capacitor C 1, the first difference incoming line of the second radio frequency input channel is in parallel with the second difference incoming line of the second radio frequency input channel by capacitor C 2.
Described master chip is MSM8625Q.
The beneficial effects of the utility model are:
Differential mode capacitor is removed in the utility model utilization, effectively removes the differential mode interference in signal, can effectively improve signal quality, has protected the safety of equipment, and thinking is ingenious, simple in structure, is easy to realize.
The accompanying drawing explanation
Fig. 1 is the utility model circuit diagram.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail: as shown in Figure 1, a kind of peripheral interface circuit that can effectively remove signal differential, it comprises that first removes differential mode capacitor C1, second removes differential mode capacitor C2 and master chip, the first differential input end mouth a of master chip is connected with the first radio frequency output port of rf processing circuitry by the first radio frequency input channel respectively with the second differential input end mouth b, the first differential input end mouth c of master chip is connected with the second radio frequency output port of rf processing circuitry by the second radio frequency input channel respectively with the second differential input end mouth d, the first difference incoming line of the first radio frequency input channel is in parallel with the second difference incoming line of the first radio frequency input channel by capacitor C 1, the first difference incoming line of the second radio frequency input channel is in parallel with the second difference incoming line of the second radio frequency input channel by capacitor C 2.
Described master chip is MSM8625Q.
Described first goes differential mode capacitor C1 and second to go differential mode capacitor C2 to be 1pF.
Claims (2)
1. the peripheral interface circuit that can effectively remove signal differential, it is characterized in that: it comprises that first removes differential mode capacitor C1, second removes differential mode capacitor C2 and master chip, the first differential input end mouth a of master chip is connected with the first radio frequency output port of rf processing circuitry by the first radio frequency input channel respectively with the second differential input end mouth b, the first differential input end mouth c of master chip is connected with the second radio frequency output port of rf processing circuitry by the second radio frequency input channel respectively with the second differential input end mouth d, the first difference incoming line of the first radio frequency input channel is in parallel with the second difference incoming line of the first radio frequency input channel by capacitor C 1, the first difference incoming line of the second radio frequency input channel is in parallel with the second difference incoming line of the second radio frequency input channel by capacitor C 2.
2. a kind of peripheral interface circuit that can effectively remove signal differential according to claim 1, it is characterized in that: described master chip is MSM8625Q.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204125967U CN203326980U (en) | 2013-07-12 | 2013-07-12 | A peripheral interface circuit capable of effectively removing signal differentials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204125967U CN203326980U (en) | 2013-07-12 | 2013-07-12 | A peripheral interface circuit capable of effectively removing signal differentials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203326980U true CN203326980U (en) | 2013-12-04 |
Family
ID=49666269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204125967U Expired - Fee Related CN203326980U (en) | 2013-07-12 | 2013-07-12 | A peripheral interface circuit capable of effectively removing signal differentials |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203326980U (en) |
-
2013
- 2013-07-12 CN CN2013204125967U patent/CN203326980U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20131204 Termination date: 20150712 |
|
| EXPY | Termination of patent right or utility model |