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Antenna isolator

A technology of antenna isolation and core wire, which is applied in the direction of TV, cable transmission adaptation, color TV parts, etc., can solve the problems of low mass production efficiency, poor product consistency, unfavorable TV sets, etc., and achieve high mass production efficiency , low cost, good shielding effect

Active Publication Date: 2016-09-07
JIANGSU HUAXING ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The shortcomings of the above-mentioned prior art are: the connection between the circuit board and each capacitor adopts manual welding, the batch production efficiency is low and the cost is high, and manual welding easily leads to poor product consistency; the product is large in size, which is not conducive to direct installation in the tv

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as Figures 1 to 3 , the antenna isolator of the present embodiment is I type, and it comprises: the large and small shielding case that opening end is oppositely arranged, and the opening end of small shielding case 5 stretches in the opening of described large shielding case 3; Large and small shielding case The outside of the shielding layer joint 9 and the second shielding layer joint 10 are respectively provided, and the first core wire joint 6 and the second core wire joint 2 distributed by the coaxial line are fixed inside the first and second shielding layer joints, There are a plurality of ground line blocking capacitors 8 and a signal DC blocking capacitor 1 inside the large and small shielding covers; a plurality of through holes are symmetrically arranged on the large and small shielding covers. Each through hole is located in the center of the corresponding pit.

[0033] The ground wire DC blocking capacitor 8 and the signal DC blocking capacitor 1 ar...

Embodiment 2

[0038] The production method of the type I antenna isolator of above-mentioned embodiment 1, it comprises the steps:

[0039] A. Set solder paste on the two electrodes of each capacitor or on the mounting holes of the large and small shields, or on multiple sets of relative through holes on the large and small shields;

[0040] B. The first and second core wire joints are respectively fixed in the first and second shielding layer joints through the insulating block 12, and at the same time, the inner ends of the first and second shielding layer joints are respectively fixed and fitted in the large , In the installation hole of the small shield;

[0041] C. The large and small shields are horizontally arranged relatively, and the DC blocking capacitors of the local lines are respectively arranged between multiple sets of relative through holes on the large and small shields, and the signal DC blocking capacitors are set Between the inner ends of the first and second shield joi...

Embodiment 3

[0045]Based on the antenna isolator of Embodiment 1 or 2 above, such as Figure 4-7 , the antenna isolator of this embodiment is L-shaped, that is, the first and second core wire connectors are vertically distributed, and the inner ends of the first and second core wire connectors are respectively connected to the two poles of the signal DC blocking capacitor through metal wires using backflow Welding.

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Abstract

The invention relates to an antenna isolator which is characterized by comprising a pair of shielding cases forming a shielding cavity, wherein a first shielding layer connector and a second shielding layer connector are arranged on the outside of each shielding case; a first core wire connector and a second core wire connector are fixedly arranged inside the first shielding layer connector and the second shielding layer connector; a plurality of ground wire blocking capacitors and a signal blocking capacitor which is connected with the first core wire connector and the second core wire connector respectively are arranged inside each shielding case; and the ground wire blocking capacitors are leadless or chip capacitors; two poles of each ground wire blocking capacitor are welded with the pair of the shielding cases through fluid welding respectively. According to the antenna isolator, the capacitors are leadless or chip capacitors, the line loss is small, the high frequency characteristic of a transmission signal can be guaranteed, at the same time, reflow soldering is facilitated, manual welding is not needed, and the antenna isolator is suitable for batch production, so that effects of higher batch production efficiency, lower cost and better product consistency are achieved; and shielding cases can adopt stamping parts, A PCB is not required in the whole product, an original plug-in unit and manual welding are not required, and the product consistency can be easily guaranteed.

Description

technical field [0001] The invention relates to an auxiliary device of a television set, in particular to an antenna isolator for ensuring the transmission quality of high-frequency signals. Background technique [0002] The grounding of the cable television set is generally connected with the power supply ground, and the grounding of the TV signal output by the cable television system is generally the metal shell of the set-top box, so when their potentials are not equal (for example, the external TV signal cable is struck by lightning or connected to the external power supply) A short circuit accident occurs in the line), the current will flow from the high potential point to the low potential point, causing interference and even heating of the cable TV or spontaneous combustion of the cable TV. In order to solve this problem, it was proposed to install a DC blocking capacitor between the signal output terminal of the cable TV system and the signal input terminal of the ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/10H04N5/44
CPCH04N7/10
Inventor 徐志明李明锁
Owner JIANGSU HUAXING ELECTRONICS CO LTD
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