CN203086411U - TV Antenna Built-in Amplifier - Google Patents

Abstract

A built-in amplifier for TV antenna is composed of signal receiver, filter, amplifier, choke coil and signal output unit, which are arranged on main circuit board. The method utilizes a high-frequency electronic micro-strip theory to calculate a component prototype from an inductance coil type filter and a choke coil, optimizes the component prototype by means of high-frequency simulation software, and then carries out actual sample debugging to finally determine a shaped printed circuit unit for replacing each functional component, wherein the component parameters reach the standard once during the production of the printed circuit unit without manual debugging in the later period, and the printed circuit unit is used as a part of a copper foil of a circuit board, has stable and reliable appearance structure, can not deform and damage in the whole process of production, transportation and use of products, thereby greatly improving the production efficiency of the products and greatly improving the final quality and performance stability of the products.

Description

TV Antenna Built-in Amplifier

【Technical field】

The utility model relates to a television antenna built-in amplifier.

【Background technique】

In the traditional TV antenna built-in amplifier design process, the "air-core inductance coil" wound with copper wire is generally used as the basic component unit of the filter circuit and choke circuit of the built-in amplifier. However, this circuit design method has many disadvantages:

1. Since the air-core inductance coil is wound with various copper wires of different diameters, its mechanical structure is easily deformed during production and use, resulting in low precision of the parameters of this component unit, which are easy to change, and the first-time pass rate of the product lower;

2. Due to the situation described above, during the production and debugging process of "air-core inductance coil" products, it is necessary to manually adjust the shape of the "air-core inductance coil" with professional high-frequency instruments to achieve basic parameter accuracy. However, this process requires high experience and quality of commissioning personnel, which also reduces production efficiency, thus requiring a large number of professional instruments and professionals to achieve production capacity, which ultimately increases production costs;

3. Due to the basic mechanical structure of the "air-core inductance coil", there are secondary deformations in all the transportation, assembly, use and other processes after the product is debugged, so the consistency of the product parameters produced by this design method is low, and finally Affects the user performance of the product.

【Content of utility model】

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a TV antenna built-in amplifier with reasonable structure, reliable quality and stable performance, which can improve production efficiency and will not be deformed during production, transportation and use. Change the magnification effect.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions:

A TV antenna built-in amplifier, including a signal receiver, a filter, an amplifier, a choke coil and a signal output device arranged on a main circuit board, and the filter and the choke coil are printed on the circuit board circuit unit.

In an improved solution to the built-in amplifier of the TV antenna, the printed circuit unit is in the shape of a serpentine or a spiral.

In an improved solution to the above TV antenna built-in amplifier, the circuit board of the serpentine printed circuit unit is a part of the main circuit board of the TV antenna built-in amplifier.

Compared with the prior art, the beneficial effect of the utility model is: because it utilizes " high-frequency electronic microstrip theory ", calculates the component prototype with the inductance coil type filter and the choke coil, then with the help of " high-frequency simulation simulation software" to optimize, and then carry out actual sample debugging to finally determine the stereotyped "printed circuit unit" that replaces each functional component. We know that the "printed circuit unit" adopts high-precision, high-efficiency "printed circuit" production technology, and the The board is formed and positioned at one time, so that the parameters of the components meet the standard at one time, and there is no need for manual debugging in the later stage. As a part of the copper foil of the circuit board, this "printing unit" has a stable and reliable appearance and structure. There will be no deformation and damage, which greatly improves the production efficiency of the product, and also greatly improves the final quality and performance stability of the product.

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail:

【Description of drawings】

FIG. 1 is a schematic diagram of Embodiment 1 of a TV antenna built-in amplifier;

Figure 2 is a schematic diagram of the second embodiment of the TV antenna built-in amplifier;

Figure 3 is a structural schematic diagram of the filter and choke coil of the built-in amplifier of the TV antenna at this stage;

Fig. 4 is the structural representation of embodiment one of filter and choke coil of the present utility model;

Fig. 5 is the structural representation under the embodiment of filter and choke coil of the present utility model.

【Detailed ways】

The utility model is a TV antenna built-in amplifier, as shown in Figures 1 and 2, which includes a signal receiver 2, a filter 3, an amplifier 4, a choke coil 5 and a signal output device arranged on a main circuit board 1 6. Here: the filter 3 and the choke coil 5 are printed circuit units 8 arranged on the circuit board 7 , as shown in FIG. 4 .

We know that there are mainly two ways of built-in amplifiers in TV antennas, as shown in Figures 1 and 2. Among them, the way in Figure 1 is to pass the received two frequency band signals through the respective previous filter 3, amplifier 4 and After being processed by the next filter 3, they are all output to the television receiving end by the shared signal output device 6; and the mode of Fig. 2 is to firstly process the received two channel signals respectively through the respective filter 3, and then pass through The shared amplifier 4 and signal output device 6 are output to the TV receiver.

At present, the traditional filter 3 and choke coil 5 adopt an air-core inductance coil structure 9, as shown in Fig. The prototype of the component is calculated in a circle, and then optimized with the help of "high-frequency simulation software", and then the sample is actually debugged to finally determine the stereotyped "printed circuit unit" that replaces each functional component, as shown in Figure 4; since the printed circuit unit uses high Accurate, high-efficiency printed circuit production technology, and one-time molding and positioning when producing circuit boards, so that component parameters can reach the standard at one time, without manual debugging in the later stage, and this "printing unit" is a part of the copper foil of the circuit board, the appearance structure Stable and reliable, so there will be no deformation and damage during the whole process of product production, transportation and use, which greatly improves the production efficiency of the product, and also greatly improves the final quality and performance stability of the product.

Normally, the circuit board 7 of the printed circuit unit 8 is the main circuit board 1 sharing the built-in amplifier of the TV antenna, that is, as a part of the main circuit board. Of course, the circuit board 7 of the printed circuit unit 8 can also be independent, but at this time, it is necessary to connect the two ends of the printed circuit unit 8 to the main circuit board 1 through wires. It can be seen that the built-in amplifier of the TV antenna sharing the circuit board is more reasonable in structure, higher in production efficiency, and more stable in work. The printed circuit unit 8 is usually serpentine (as shown in FIG. 4 ) or spiral (as shown in FIG. 5 ).

In summary, the above is only a preferred embodiment of the present utility model, and is not used to limit the scope of implementation of the present utility model, that is, all equivalent changes and modifications made according to the content of the utility model patent application should belong to the present utility model. New category of technology.

Claims (3)

1. a kind of built-in amplifier of TV antenna comprises signal receiver, filter, amplifier, choke coil and signal output device arranged on the main circuit board, it is characterized in that, described filter and choke coil are set Printed circuit unit on a circuit board. 2. The TV antenna built-in amplifier according to claim 1, wherein the shape of the circuit unit is spiral or is composed of several equal-length line segments and arc-shaped edges connecting these line segments end to end. composition. 3. The built-in TV antenna amplifier according to claim 1 or 2, characterized in that, the circuit board of the printed circuit unit is a part of the main circuit board of the TV antenna built-in amplifier. the

Images