KR101612449B1 - AM/FM/DMB Signal Repeaters and AM/FM/DMB Signal Repeating Method - Google Patents

Abstract

The present invention relates to an AM / FM / DMB signal relaying method using an AM / FM / DMB signal repeater and an AM / FM / DMB signal repeater, and more particularly, To receive AM / FM / DMB signal in the area, it receives RF signal through an antenna outside the building or tunnel and then selectively detects the AM / FM / DMB signal to remove noise and amplify it. It transmits signals of distortion-free signals and relay emergency signals as well as over-the-air broadcasts. It enables quick response when a disaster or an emergency occurs, FM / DMB signal repeater and AM / FM / DMB signal repeater using AM / FM / DMB signal repeater.

Description

(AM / FM / DMB Signal Repeater and AM / FM / DMB Signal Repeating Method using AM / FM / DMB Signal Repeater and AM /

More particularly, the present invention relates to an AM / FM / DMB signal relaying method using an AM / FM / DMB signal repeater and an AM / FM / DMB signal repeater, FM / DMB signal that transmits AM / FM / DMB signals to a shaded area where radio waves are not properly received in a building underground or inside a tunnel by selectively detecting AM / FM / DMB signals after receiving them, And an AM / FM / DMB signal relaying method using a repeater and an AM / FM / DMB signal repeater.

Generally, a repeater is a process of amplifying a signal to send a signal farther, and then transmitting the signal again.

Conventionally, it is impossible to provide an optimized signal level for signal transmission using a simple method of selecting a signal to be relayed, removing the noise, amplifying the signal again, and then transmitting the signal. There is a problem in that it can not be transmitted, and in particular, an emergency signal can not be relayed.

Registration Utility Model Bulletin 20-0340071 Published Patent Application No. 10-2005-0104572

The problem to be solved by the present invention is to relay the radio waves of the optimized power level to a shade area where radio waves such as underground buildings and tunnels are not properly reached to overcome the above problems.

Another problem to be solved by the present invention is to overcome the above-mentioned problem, and relay emergency signals as well as over-the-air broadcasting.

Another problem to be solved by the present invention is to overcome the above-mentioned problem, and to prevent the over-input by limiting the input RF signal.

The present invention relates to an AM / FM / DMB signal repeater, and more particularly, to an AM / FM / DMB signal repeater including an RF input unit 1100 for receiving AM, FM, and DMB signals as RF signals; A level limiting unit 1200 for limiting AM, FM, and DMB signal power by an amount of isolation between AM and FM signals and DMB signals received through the RF input unit 1100; A filter unit 1300 for blocking an external signal and a noise component from the RF signal through the level limiting unit 1200 and separating the RF signal into AM and FM signals and DMB signals; An RF (Amplitude and Frequency) signal for amplifying the AM and FM signals and the DMB signal separated by the filter unit 1300, adjusting the RF power level, outputting the amplified signals to the antenna unit 1500, A processing unit 1400; And an antenna unit 1500 for outputting the AM and FM signals processed by the RF processor 1400 and the DMB signals.

At this time, the RF processor 1400 amplifies the AM and FM signals and the DMB signal separated by the filter unit 1300 with low noise, and amplifies the AM, FM, and DMB signal power DC received through the detector 1450 An adjustment unit 1410 for performing automatic gain adjustment using a voltage; A level adjusting unit 1420 for adjusting the signal power to transmit the AM and FM signals and the DMB signal through the adjusting unit 1410 at a constant power; An amplifying unit 1430 amplifying the signals to output the AM and FM signals and the DMB signals through the level adjusting unit 1420 to an antenna; The AM and FM signals and the DMB signals are processed by the adjusting unit 1410, the level adjusting unit 1420, and the amplifying unit 1430, A portion 1440; And a detector 1450 for detecting the signal power DC voltage of the AM and FM signals and the DMB signal and outputting the detected signal power DC voltage to the controller 1410.

Also, the control unit 1410 may include a dual gate metal oxide semiconductor field effect transistor (MOSFET); And a bipolar junction transistor (Bipolar junction transistor).

At this time, the processing filter unit 1440 includes a low pass filter (LPF) for removing noise of AM and FM signals; And a band-pass filter (BPF) for removing noise of the DMB signal.

The filter unit 1300 includes a Diplex Filter 1310 for separating the RF signal into AM and FM signals and a DMB signal.

Also, at this time, the antenna unit 1500 includes an AM / FM antenna unit 1510 for outputting the AM and FM signals through the detection unit 1450; And a DMB antenna unit 1520 for outputting the DMB signal through the detection unit 1450.

A method of relaying AM / FM / DMB signals using an AM / FM / DMB signal repeater, the AM / FM / DMB signal relay method comprising the steps of: (A) Limiting the power of the AM, FM and DMB signals as much as the degree of isolation of the signal; (B) isolating an external signal and a noise component from the RF signal and separating the RF signal into AM and FM signals and DMB signals; (C) amplifying the separated AM and FM signals and the DMB signal, adjusting an RF power level, amplifying the amplified AM and FM signals to output to the antenna unit 1500, and removing noise due to RF signal processing; (D) outputting the AM and FM signals and the DMB signal processed through the RF signal through the antenna unit 1500.

In the step (C), the separated AM and FM signals and the DMB signal are amplified with low noise, and the automatic gain control is performed using the power DC voltage of the AM, FM and DMB signals detected in step (C5) ; (C2) adjusting signal power to transmit the AM and FM signals and the DMB signal at a constant power; (C3) amplifying the signals to output the AM and FM signals and the DMB signals to an antenna; (C4) removing noise generated when the AM and FM signals and the DMB signal are processed according to the steps (C1), (C2), and (C3); (C5) Detecting the signal power DC voltage of the AM and FM signals and the DMB signal and making them available in the step (C1).

According to the present invention, there is an effect that the radio wave of the optimized power level is relayed to the shade area where the radio wave such as the building underground and the tunnel is not properly reached, and the radio wave of the signal without distortion is transmitted as much as possible.

In addition, according to the present invention, there is an effect that, in addition to the over-the-air broadcast, an emergency signal is relayed so that a disaster and an emergency can be dealt with promptly.

Also, according to the present invention, it is possible to protect weak component parts from excessive input by preventing input and output by limiting the input RF signal.

1 is a block diagram illustrating an AM / FM / DMB signal repeater according to an embodiment of the present invention.
2 is a block diagram illustrating a detailed configuration of an AM / FM / DMB signal repeater according to an embodiment of the present invention.
3 is a block diagram illustrating an RF processor 1400 according to an embodiment of the present invention.
4 is a flowchart illustrating an AM / FM / DMB signal relaying method according to an embodiment of the present invention.

Before describing the specific details for the practice of the invention, terms and words used in the specification and claims should be construed to enable the inventor to properly define the concept of a term in order to best describe its invention The present invention is not limited thereto.

It is to be noted that the detailed description of known functions and constructions related to the present invention is omitted when it is determined that the gist of the present invention may be unnecessarily blurred.

Hereinafter, an AM / FM / DMB signal repeater according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3. FIG.

1 is a block diagram illustrating an AM / FM / DMB signal repeater according to an embodiment of the present invention.

1, an AM / FM / DMB signal repeater according to a preferred embodiment of the present invention includes an RF input unit 1100 for receiving AM, FM and DMB signals as RF signals, A level limiting unit 1200 for limiting the AM, FM, and DMB signal power as much as the degree of isolation between the received AM and FM signals and the DMB signal, an external signal and a noise component from the RF signal through the level limiting unit 1200 A filter unit 1300 for separating the RF signal into AM and FM signals and a DMB signal, an amplifier unit 1300 for amplifying the AM and FM signals and the DMB signal separated by the filter unit 1300, An RF processor 1400 that amplifies the amplified signal to output the amplified signal to the RF processor 1400 and then removes noise due to the RF signal processing, And an antenna unit 1500.

In this case, the RF power is limited by the level limiting unit 1200 by limiting the RF power below a threshold value based on a preset threshold value, thereby detecting RF power as a DC voltage through the schottky diode, Diode is what limits RF power to isolation.

Also, the filter unit 1300 includes a Diplex Filter 1310 for separating the RF signal into AM and FM signals and a DMB signal.

The antenna unit 1500 includes an AM / FM antenna unit 1510 for outputting the AM and FM signals through the detection unit 1450 and a DMB antenna unit 1510 for outputting the DMB signals through the detection unit 1450. [ (1520).

2 is a block diagram illustrating a detailed configuration of an AM / FM / DMB signal repeater according to an embodiment of the present invention.

3 is a block diagram illustrating an RF processor 1400 according to an embodiment of the present invention.

2 to 3, the RF processor 1400 amplifies the AM and FM signals and the DMB signal separated by the filter unit 1300 with low noise, and outputs the amplified signals to the detector 1450 A control unit 1410 for performing automatic gain control using the power DC voltage of the AM, FM and DMB signals received through the control unit 1410, a signal power control unit 1410 for transmitting the AM and FM signals through the control unit 1410 and the DMB signal at a constant power, An amplifier 1430 for amplifying a signal for outputting the AM and FM signals and the DMB signal through the level adjuster 1420 to the antenna, a demodulator 1430 for amplifying the AM and FM signals and the DMB A processing filter unit 1440 for removing noise generated when the signal is processed by the adjusting unit 1410, the level adjusting unit 1420 and the amplifying unit 1430 and then outputting the noise to the antenna unit 1500; FM signal and the signal power of the DMB signal By detecting a voltage comprises a detection unit 1450 for outputting to the control unit (1410).

In addition, the controller 1410 may include a dual gate metal oxide semiconductor field effect transistor (Dual Gate MOSFET) and a bipolar junction transistor.

In addition, a preferred embodiment of the level adjusting unit 1420 is a? -Decreasing circuit composed of four PIN diodes.

In addition, a preferred embodiment of the configuration of the amplification unit 1430 is an AMP (Amplifier) followed by a Drive AMP (Drive Amplifier).

In addition, the processing filter unit 1440 includes a low pass filter (LPF) for removing noise of AM and FM signals and a band pass filter (BPF) for removing noise of a DMB signal.

In addition, a preferred embodiment of the detector 1450 detects the DC voltage through the Schottky diode, amplifies the detected DC voltage by the OPAMP, and outputs the signal power DC voltage to the regulator 1410.

Hereinafter, an AM / FM / DMB signal relaying method using an AM / FM / DMB signal repeater according to a preferred embodiment of the present invention will be described in detail with reference to FIG.

As shown in FIG. 4, in the AM / FM / DMB signal relaying method according to the preferred embodiment of the present invention, the AM, FM, and DMB signal power (S401).

Next, an external signal and a noise component are cut off from the RF signal, and the AM signal and the FM signal are separated from the RF signal into a DMB signal (S402).

Next, the separated AM and FM signals and the DMB signal are amplified and the RF power level is adjusted, amplified for output to the antenna unit 1500, and then noise due to the RF signal processing is removed (S403).

Next, the AM and FM signals processed by the RF signal and the DMB signal are output through the antenna unit 1500 (S404).

At this time, in a preferred embodiment of limiting the RF power in the step S401, the RF power is limited to less than a threshold value based on a preset threshold value, thereby detecting the RF power as a DC voltage and limiting the RF power by the degree of isolation .

In operation S403, the amplified AM and FM signals and the DMB signal are amplified with low noise, and automatic gain control is performed using the power DC voltage of the AM, FM, and DMB signals detected in operation C5 C1).

Next, the signal power is adjusted to transmit the AM and FM signals and the DMB signal at a constant power (C2).

Next, a signal is amplified to output the AM and FM signals and the DMB signal to an antenna (C3).

Next, the AM and FM signals and the DMB signal are processed according to the steps (C1), (C2), and (C3) to remove noise generated (C4).

Next, the signal power DC voltage of the AM and FM signals and the DMB signal is detected and used in the step (C 1) (C 5).

In addition, the preferred embodiment of step (C5) is to detect the DC voltage of the RF signal and amplify the detected DC voltage so that the signal power DC voltage can be used in step (C1).

1000: AM / FM / DMB Minimal Output Repeater
1100: RF input unit
1200: level limit unit
1300:
1310: Diplex Filter
1400: RF processor
1410:
1420:
1430:
1440:
1450:
1500: Antenna part
1510: AM / FM antenna unit
1520: DMB antenna section

Claims (8)

In an AM / FM / DMB signal repeater,
An RF input unit 1100 for receiving AM, FM and DMB signals as RF signals;
A level limiting unit 1200 for limiting AM, FM, and DMB signal power by an amount of isolation between AM and FM signals and DMB signals received through the RF input unit 1100;
A filter unit 1300 for blocking an external signal and a noise component from the RF signal through the level limiting unit 1200 and separating the RF signal into AM and FM signals and DMB signals;
An RF (Amplitude and Frequency) signal for amplifying the AM and FM signals and the DMB signal separated by the filter unit 1300, adjusting the RF power level, outputting the amplified signals to the antenna unit 1500, A processing unit 1400; And
An antenna unit 1500 for outputting the AM and FM signals processed by the RF processor 1400 and the DMB signals; , ≪ / RTI &
The RF processor 1400
A control unit for amplifying the AM and FM signals and the DMB signal separated by the filter unit 1300 with low noise and performing automatic gain control using the power DC voltage of AM, FM and DMB signals received through the detector 1450 A portion 1410;
A level adjusting unit 1420 for adjusting the signal power to transmit the AM and FM signals and the DMB signal through the adjusting unit 1410 at a constant power;
An amplifying unit 1430 amplifying the signals to output the AM and FM signals and the DMB signals through the level adjusting unit 1420 to an antenna;
The AM and FM signals and the DMB signal are processed by the adjusting unit 1410, the level adjusting unit 1420 and the amplifying unit 1430 and then output to the antenna unit 1500, A portion 1440; And
A detector 1450 for detecting the signal power DC voltage of the AM and FM signals and the DMB signal and outputting the detected signal power DC voltage to the controller 1410;
And an AM / FM / DMB signal repeater.
delete The method according to claim 1,
The control unit 1410
A dual gate metal oxide semiconductor field effect transistor (Dual Gate MOSFET); And
A bipolar junction transistor;
And an AM / FM / DMB signal repeater.
The method according to claim 1,
The processing filter unit 1440
A low-pass filter (LPF) that removes noise in AM and FM signals; And
A band pass filter (BPF) for removing noise of the DMB signal;
And an AM / FM / DMB signal repeater.
The method according to claim 1,
The filter unit 1300 includes:
A Diplex Filter 1310 for separating the RF signal into AM and FM signals and DMB signals;
And an AM / FM / DMB signal repeater.
The method according to claim 1,
The antenna unit 1500 includes:
An AM / FM antenna unit 1510 for outputting the AM and FM signals through the detection unit 1450; And
A DMB antenna unit 1520 for outputting the DMB signal through the detection unit 1450;
And an AM / FM / DMB signal repeater.
In an AM / FM / DMB signal relaying method,
(A) restricting AM, FM and DMB signal power as much as the isolation of the AM and FM signals and the DMB signal from the received RF signal;
(B) isolating an external signal and a noise component from the RF signal and separating the RF signal into AM and FM signals and DMB signals;
(C) amplifying the separated AM and FM signals and the DMB signal, adjusting the RF power level, amplifying the amplified signals to output to the antenna unit 1500, and removing noise due to the RF signal processing;
(D) outputting the AM and FM signals processed by the RF signal and the DMB signal through the antenna unit 1500; , ≪ / RTI &
The step (C)
(C1) amplifying the separated AM and FM signals and the DMB signal with low noise, and performing automatic gain control using the power DC voltage of the AM, FM and DMB signals detected in step (C5);
(C2) adjusting signal power to transmit the AM and FM signals and the DMB signal at a constant power;
(C3) amplifying the signals to output the AM and FM signals and the DMB signals to an antenna;
(C4) removing noise generated when the AM and FM signals and the DMB signal are processed according to the steps (C1), (C2), and (C3);
(C5) detecting the signal power DC voltage of the AM and FM signals and the DMB signal and making them available in the step (C1);
Wherein the AM / FM / DMB signal relay method comprises:
delete

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