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Tuner components for antenna isolators that ensure the quality of high-frequency signal transmission

A high-frequency head and isolator technology, applied in color TV parts, TV system parts, electrical components, etc., can solve the problems of low mass production efficiency, poor product consistency, unfavorable TV sets, etc. High chemical production efficiency, low cost, good shielding effect

Active Publication Date: 2018-09-07
JIANGSU HUAXING ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 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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  • Tuner components for antenna isolators that ensure the quality of high-frequency signal transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 , the tuner assembly for television of the present embodiment comprises: an outer shield 2, a tuner unit circuit 10 located in the outer shield 2; the signal input end of the tuner unit circuit 10 is isolated from an antenna The signal output terminal of the antenna isolator is connected; the antenna isolator includes: large and small shielding covers with opposite openings, the opening end of the small shielding cover 5 extends into the opening of the large shielding cover 3; the outer side of the small shielding cover 5 is provided There is a shielding layer joint 9, and the core wire joint 6 of coaxial distribution is fixedly arranged in the shielding layer joint 9, and the rear port of the large shielding cover 3 is connected with the front opening of the outer shielding cover 2; There are 4, 5 or 6 ground wire DC blocking capacitors 8 and a signal DC blocking capacitor 1; a plurality of through holes are symmetrically arranged on the large and smal...

Embodiment 2

[0034] The production method of the antenna isolator in the tuner assembly of above-mentioned embodiment 1, it comprises the steps:

[0035] A. Fix solder paste on the two electrodes of each capacitor, or on the large and small shields;

[0036] B. The core wire joint is fixed in the shielding layer joint through the insulating block 11, and at the same time, the inner side end of the shielding layer joint is fixedly fitted in the installation hole of the large shielding case or the small shielding case;

[0037] C. The large and small shielding covers are arranged horizontally opposite each other, and the shielding layer connectors are set downwards, and the DC blocking capacitors for each line are respectively arranged between multiple sets of relative through holes on the large and small shielding covers Between, the signal DC blocking capacitor is set on the inner end of the shielding layer connector;

[0038] D. Send it to the reflow soldering device to complete the solder...

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Abstract

The invention relates to a high-frequency head assembly with an antenna isolator for guaranteeing the transmission quality of a high-frequency signal, and the high-frequency head assembly comprises a high-frequency head unit circuit and the antenna connected with a signal input end of the high-frequency head unit circuit. The high-frequency head unit is disposed in an external shielding cover. The antenna isolator comprises a pair of shielding covers, wherein the opening ends of the shielding covers are oppositely arranged so as to form a shielding cavity. An outer side of one shielding cover is provided with a shielding layer connector, and the rear end opening of the other shielding cover is connected with the front end opening of the external shielding cover. The capacitors employed in the antenna isolator in the high-frequency head assembly are no-lead capacitors or chip capacitors, so the line loss is low and the high-frequency characteristics of a transmitted signal can be guaranteed. Meanwhile, the implementation of reflow soldering is facilitated, manual welding is not needed and the high-frequency head assembly is suitable for batch production, thereby achieving effects of higher batch production efficiency, lower cost and better product consistency. The shielding covers can employ stamping parts, and the whole product does not need a PCB. Moreover, the high-frequency head assembly does not need an original insert part, does not need to manual welding, and easily guarantees the product consistency.

Description

technical field [0001] The invention relates to components of a television set, in particular to a high-frequency head assembly with an antenna isolator, and the antenna isolator is used to ensure the transmission quality of high-frequency signals. Background technique [0002] Tuner: Commonly known as a tuner, it is a device used by a TV to receive high-frequency signals and demodulate video information. The existing tuners are generally divided into digital signal tuners (referred to as digital tuners) and analog tuners. Signal tuner (abbreviated as analog tuner). [0003] The function of the digital high-frequency head is to receive digital TV high-frequency signals, and perform channel selection, high-frequency signal amplification and frequency conversion processing, and some also have intermediate frequency signal amplification and high-frequency digital signal demodulation functions. , the output digital signal is TS stream (also called transport stream), which is a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/50
CPCH04N5/50
Inventor 徐志明李明锁
Owner JIANGSU HUAXING ELECTRONICS CO LTD
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