CN216121055U - Electronic tuner with dual RF inputs - Google Patents
Electronic tuner with dual RF inputs Download PDFInfo
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- CN216121055U CN216121055U CN202122941718.9U CN202122941718U CN216121055U CN 216121055 U CN216121055 U CN 216121055U CN 202122941718 U CN202122941718 U CN 202122941718U CN 216121055 U CN216121055 U CN 216121055U
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- isolation
- tuner
- groove
- ant
- sockets
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model provides a double-RF input electronic tuner which comprises an enclosing frame, wherein two ANT sockets are arranged on the enclosing frame, a PCB is arranged in the enclosing frame, a conductive isolating groove is formed in the PCB, an isolating cavity is formed in the isolating groove, the opening of the isolating groove faces the PCB, and the isolating groove is positioned between the two ANT sockets. The isolation groove with the isolation cavity is added between the two ANT sockets, so that the isolation index is greatly improved, mutual crosstalk between two radio-frequency signals can be effectively shielded, the enclosure frame framework of the tuner is strengthened, the grounding of the RF input end of the tuner is better, and the main performance indexes of the tuner, such as C/N, minimum receiving level, adjacent frequency suppression, limited noise sensitivity and the like, are improved to a certain extent.
Description
Technical Field
The utility model relates to the field of tuners, in particular to an electronic tuner with double RF inputs.
Background
The electronic tuner with double RF inputs is provided with two ANT sockets, two ANT sockets input a radio frequency signal respectively, the isolation index of two radio frequency signal input ends is very important, if the isolation is not good, the RF input signal of ANT1 can be radiated to an ANT2 port, the RF input signal of ANT2 can be radiated to an ANT1 port, and the two paths of RF signals cause mutual interference.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a dual-RF input electronic tuner to improve the isolation index and effectively shield the mutual crosstalk between two radio frequency signals.
The technical scheme adopted by the utility model for solving the technical problems is as follows: electronic tuner of two RF inputs is including enclosing the frame, encloses to be provided with two ANT sockets on the frame, encloses the inside PCB board that is provided with of frame, be provided with electrically conductive isolation groove on the PCB board, isolation inslot portion has the isolation chamber, and the opening of isolation groove is towards the PCB board, the isolation groove is located between two ANT sockets.
Furthermore, the opening part of isolation groove is provided with two at least supporting legss, the supporting legs welds in the PCB board.
Further, the isolation groove is connected with the enclosure frame through spot welding paste.
Further, the isolation groove is a metal groove.
The utility model has the beneficial effects that: the isolation groove with the isolation cavity is added between the two ANT sockets, so that the isolation index is greatly improved, mutual crosstalk between two radio-frequency signals can be effectively shielded, the enclosure frame framework of the tuner is strengthened, the grounding of the RF input end of the tuner is better, and the main performance indexes of the tuner, such as C/N, minimum receiving level, adjacent frequency suppression, limited noise sensitivity and the like, are improved to a certain extent.
Drawings
FIG. 1 is an exploded view of a dual RF input electronic tuner according to the present invention;
reference numerals: 1-enclosing a frame; 2-an isolation groove; 21-supporting feet; 3-PCB board.
Detailed Description
The utility model is further illustrated with reference to the following figures and examples.
The dual-RF input electronic tuner of the utility model, as shown in FIG. 1, comprises an enclosure frame 1, two ANT sockets for inputting two RF signals, namely RF1 and RF2, are arranged on the enclosure frame 1, a PCB 3 is arranged inside the enclosure frame 1, a conductive isolation slot 2 is arranged on the PCB 3, an isolation cavity is arranged inside the isolation slot 2, the opening of the isolation slot 2 faces the PCB 3, and the isolation slot 2 is located between the two ANT sockets.
The isolation groove 2 can adopt a metal groove, such as a copper groove, and the like, through adding the isolation groove 2 with an isolation cavity between two ANT sockets, the isolation cavity can play a role in isolating RF signals, the isolation index is greatly improved, mutual crosstalk between two radio frequency signals can be effectively shielded, the framework of the enclosure frame 1 of the tuner is also enhanced, the RF input end of the tuner is grounded better, and the main performance indexes of the tuner, such as C/N, minimum receiving level, adjacent frequency suppression, limited noise sensitivity and the like, are also improved to a certain extent.
Considering the connection point of the isolation groove 2 and the PCB 3, the stable connection of the isolation groove 2 and the enclosure frame 1 and the operation convenience of the isolation groove 2 during the whole tuner assembly, the opening of the isolation groove 2 is provided with at least two supporting feet 21, the supporting feet 21 are welded on the PCB 3, and the isolation groove 2 is connected with the enclosure frame 1 through spot welding paste. During the assembly, insert PCB board 3 with supporting legs 21 earlier, again with supporting legs 21 and 3 welded fastening of PCB board, then the enclosing frame 1 of facial make-up tuner, the top of isolation groove 2 with enclose frame 1 and contact, at the contact position point soldering paste, ensure isolation groove 2 and enclose frame 1 stable connection.
Through tests, after the isolation groove 2 is added, the isolation degree is improved by more than 20 dB.
Claims (4)
1. Electronic tuner of two RF inputs is including enclosing frame (1), encloses to be provided with two ANT sockets on frame (1), encloses frame (1) inside and is provided with PCB board (3), its characterized in that: be provided with electrically conductive isolation groove (2) on PCB board (3), isolation groove (2) inside has the isolation chamber, and the opening of isolation groove (2) is towards PCB board (3), isolation groove (2) are located between two ANT sockets.
2. The dual RF input electronic tuner of claim 1, wherein: the opening part of isolation groove (2) is provided with two at least supporting legs (21), supporting legs (21) weld in PCB board (3).
3. The dual RF input electronic tuner of claim 1 or 2, wherein: the isolation groove (2) is connected with the enclosure frame (1) through spot welding paste.
4. The dual RF input electronic tuner of claim 1, wherein: the isolation groove (2) is a metal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122941718.9U CN216121055U (en) | 2021-11-26 | 2021-11-26 | Electronic tuner with dual RF inputs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122941718.9U CN216121055U (en) | 2021-11-26 | 2021-11-26 | Electronic tuner with dual RF inputs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216121055U true CN216121055U (en) | 2022-03-22 |
Family
ID=80718925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122941718.9U Active CN216121055U (en) | 2021-11-26 | 2021-11-26 | Electronic tuner with dual RF inputs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216121055U (en) |
-
2021
- 2021-11-26 CN CN202122941718.9U patent/CN216121055U/en active Active
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