阅读说明：本技术 一种用于电视天线接收的信号直通和放大兼容模块 (Signal direct connection and amplification compatible module for television antenna receiving ) 是由 张伟强 于 2019-04-30 设计创作，主要内容包括：本发明公开了一种用于电视天线接收的信号直通和放大兼容模块,其连接于天线和机顶盒之间以用于将天线接收到的信号输送至机顶盒,包括有相互并联的直通电路和放大电路、以及直流控制电路；所述直流控制电路的输入端与预设于室内的直流电源相连接,而其输出端分别与直通电路和放大电路相连接,当直流控制电路输出直流电压时,所述直通电路截止,而所述放大电路导通,当直流控制电路无直流电压输出时,所述直通电路导通,而所述放大电路截止。(The invention discloses a signal direct connection and amplification compatible module for receiving a television antenna, which is connected between an antenna and a set top box and used for transmitting a signal received by the antenna to the set top box, and comprises a direct connection circuit, an amplification circuit and a direct current control circuit which are mutually connected in parallel; the input end of the direct current control circuit is connected with a direct current power supply preset indoors, the output end of the direct current control circuit is respectively connected with the through circuit and the amplifying circuit, when the direct current control circuit outputs direct current voltage, the through circuit is cut off, the amplifying circuit is conducted, when the direct current control circuit does not output direct current voltage, the through circuit is conducted, and the amplifying circuit is cut off.)

1. A signal pass-through and amplification compatible module for television antenna reception, connected between an antenna (1) and a set-top box (2) for conveying signals received by the antenna (1) to the set-top box (2), characterized in that: comprises a through circuit (3), an amplifying circuit (4) and a direct current control circuit (5) which are connected in parallel; the input end of the direct current control circuit (5) is connected with a preset direct current power supply, the output end of the direct current control circuit is respectively connected with the through circuit (3) and the amplifying circuit (4), when the direct current control circuit (5) outputs direct current voltage, the through circuit (3) is cut off, the amplifying circuit (4) is conducted, when the direct current control circuit (5) does not output direct current voltage, the through circuit (3) is conducted, and the amplifying circuit (4) is cut off.

2. A signal pass-through and amplification compatible module for television antenna reception as defined in claim 1, wherein: the direct current circuit (3) is connected with a radio frequency switch (31) in series, wherein the output end of the direct current control circuit (5) is connected with the control end of the radio frequency switch (31), when the direct current control circuit (5) outputs direct current voltage, the radio frequency switch (31) is closed to enable the direct current circuit (3) to be cut off, and when the direct current control circuit (5) does not output direct current voltage, the radio frequency switch (31) is opened to enable the direct current circuit (3) to be conducted.

3. A signal pass-through and amplification compatible module for television antenna reception as defined in claim 1, wherein: LNA amplifier (41) is connected in series on amplifying circuit (4), wherein, the output of direct current control circuit (5) respectively with the input and the output of LNA amplifier (41) are connected, when direct current control circuit (5) output direct current voltage, LNA amplifier (41) open so that amplifying circuit (4) switches on, when direct current control circuit (5) do not have direct current voltage output, LNA amplifier (41) close so that amplifying circuit (4) cuts off.

4. A signal pass-through and amplification compatible module for television antenna reception as defined in claim 1, wherein: the direct current power supply is provided by the set top box (2) or is an independent power supply arranged indoors.

5. A signal pass-through and amplification compatible module for television antenna reception as defined in claim 1, wherein: the amplifying circuit (4) further comprises two switching diodes (6) which are respectively connected in series with the input end and the output end of the LNA (41), and when the through circuit (3) is conducted, the two switching diodes (6) are cut off so that the through circuit (3) is isolated from the amplifying circuit (4).

6. A signal pass-through and amplification compatible module for television antenna reception as defined in claim 1, wherein: the module is arranged in a preset vibrator box.

Technical Field

The invention relates to the technical field of wireless communication, in particular to a signal direct-connection and amplification compatible module for television antenna receiving.

Background

When the television receives signals through an outdoor antenna, two working states of a straight-through type and an amplification type are usually available, the existing antenna can only realize one working state singly, the user cannot freely and flexibly select the antenna according to the strength of the signals in the area where the user is located, the trial experience of the user is seriously influenced, and when the user needs to replace the antenna, the general antenna is erected at an outdoor high place, great inconvenience is caused to the work of maintenance personnel, and certain potential safety hazards are caused.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a signal direct-connection and amplification compatible module for television antenna reception, which can effectively improve the signal reception quality and the user experience and has good applicability.

In order to achieve the purpose, the scheme provided by the invention is as follows: a signal direct connection and amplification compatible module for receiving television antenna is connected between the antenna and a set-top box for transmitting the signal received by the antenna to the set-top box, and comprises a direct connection circuit, an amplification circuit and a direct current control circuit which are connected in parallel; the input end of the direct current control circuit is connected with a direct current power supply preset indoors, the output end of the direct current control circuit is respectively connected with the through circuit and the amplifying circuit, when the direct current control circuit outputs direct current voltage, the through circuit is cut off, the amplifying circuit is conducted, when the direct current control circuit does not output direct current voltage, the through circuit is conducted, and the amplifying circuit is cut off.

Further, a radio frequency switch is connected in series to the through circuit, wherein an output end of the direct current control circuit is connected to a control end of the radio frequency switch, when the direct current control circuit outputs a direct current voltage, the radio frequency switch is turned off to turn off the through circuit, and when the direct current control circuit does not output the direct current voltage, the radio frequency switch is turned on to turn on the through circuit.

Further, an LNA amplifier is connected in series to the amplifying circuit, wherein an output end of the dc control circuit is connected to an input end and an output end of the LNA amplifier, respectively, when the dc control circuit outputs a dc voltage, the LNA amplifier is turned on to turn on the amplifying circuit, and when the dc control circuit does not output a dc voltage, the LNA amplifier is turned off to turn off the amplifying circuit.

Further, the direct current power supply preset indoors is a set top box or an independent power supply.

Furthermore, the amplifying circuit further comprises two switching diodes which are respectively connected in series with the input end and the output end of the LNA amplifier, and when the through circuit is conducted, the two switching diodes are cut off so that the through circuit is isolated from the amplifying circuit.

Compared with the prior art, the invention has the advantages that the receiving state of the antenna can be directly switched by a user indoors according to the signal condition of the area, the universality is strong, the antenna is not required to be replaced, the operation is simple, convenient and safe, the use experience of the user is greatly improved, and the receiving quality of the television signal is also effectively improved; and the module has simple structure, low manufacturing difficulty and cost and is suitable for large-scale production.

Drawings

Fig. 1 is a block schematic diagram of the present invention.

Fig. 2 is a schematic circuit diagram of the present invention.

The system comprises an antenna 1, a set-top box 2, a direct-through circuit 3, a radio frequency switch 31, an amplification circuit 4, an LNA amplifier 41, a direct current control circuit 5 and a switching diode 6.

Detailed Description

The invention will be further illustrated with reference to specific examples:

referring to fig. 1 and 2, the present invention is a signal direct-through and amplification compatible module for receiving a television antenna, which is connected between an antenna 1 and a set-top box 2, and is configured to transmit a signal received by the antenna 1 to the set-top box 2, and includes an impedance matching circuit, a direct-through circuit 3 and an amplification circuit 4 that are connected in parallel, and a direct-current control circuit 5, where the direct-through circuit 3 is configured to transmit a received television signal directly to the set-top box 2 with low loss, and the amplification circuit 4 is configured to amplify the received television signal and then transmit the amplified television signal to the set-top box 2; the input end of the dc control circuit 5 is connected to a preset dc power supply (in this embodiment, the dc power supply is provided by the set-top box 2), the output end is connected to the through circuit 3 and the amplifying circuit 4, when the dc control circuit 5 outputs a dc voltage, the through circuit 3 is turned off, the amplifying circuit 4 is turned on, and when the dc control circuit 5 does not output a dc voltage, the through circuit 3 is turned on, and the amplifying circuit 4 is turned off.

In some embodiments, the dc power source is a separate dc power source located indoors.

Through the module, a user can directly adopt a mode of remotely controlling the set top box 2 indoors or directly operate the set top box 2 to select the working state of the module according to the strength of an actual local signal, for example, the local signal is weak (the area far away from a transmitting base station), the user supplies direct current voltage to the module by setting the set top box 2, so that the amplifying circuit 4 is switched on, the direct current circuit 3 is switched off, and a signal received from the antenna 1 is subjected to impedance matching through the impedance matching circuit, amplified through the amplifier of the amplifying circuit 4 and finally transmitted to the set top box 2; if the signal of the area is strong (the area near the transmitting base station), the user does not conduct direct current voltage to the module by setting the set top box 2, so that the amplifying circuit 4 is cut off, and the direct current circuit 3 is conducted, so that the signal after impedance matching is directly transmitted to the set top box 2 through the direct current circuit 3, and the self-excitation phenomenon caused by high gain is avoided; the user experience is greatly improved, and the signal receiving quality is greatly improved.

In this embodiment, the radio frequency switch 31 is connected in series to the through circuit 3, the output terminal of the dc control circuit 5 is connected to the control terminal of the radio frequency switch 31, and when the dc control circuit 5 outputs a dc voltage to the radio frequency switch 31, the radio frequency switch 31 is turned to a closed state, that is, the through circuit 3 is turned off; the amplifier circuit 4 is connected in series with the LNA amplifier 41, the output terminal of the dc control circuit 5 is connected to the input terminal and the output terminal of the LNA amplifier 41, and when the dc control circuit 5 outputs a dc voltage to the LNA amplifier 41, the LNA amplifier 41 is turned to a conduction amplification state, that is, the amplifier circuit 4 is turned on to operate.

In the present embodiment, the rf switch 31 has a model of BF1108R, and the LNA amplifier 41 is composed of a series of transistors having a model of BF 776.

In this embodiment, the amplifying circuit 4 further includes two switching diodes 6 respectively connected in series to the input terminal and the output terminal of the LNA amplifier 41, and when the through circuit 3 is turned on, the two switching diodes 6 are turned off to isolate the through circuit 3 from the amplifying circuit 4, so that the interference of the amplifying circuit 4 when the dc circuit works is effectively avoided, and the signal receiving quality is improved.

In the present embodiment, the switching diode 6 is of the type BAP 65-02.

In this embodiment, the module is mounted in a vibrator case.

In addition, it should be noted that the names of the parts and the like of the embodiments described in the present specification may be different, and the equivalent or simple change of the structure, the characteristics and the principle described in the present patent idea is included in the protection scope of the present patent. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.