TWI463810B - Radio signal receiving system - Google Patents

Description

Radio signal receiving system

The present invention relates to a radio wave signal receiving system, and more particularly to a radio wave signal receiving system that does not require the use of a conventional independent antenna.

Traditionally, receiver systems such as AM/FM receivers, Digital Audio Broadcasting (DAB) receivers, and digital TV (DTV) receivers require an external antenna or antenna. The frame serves as a receiving carrier for the electric wave signal.

However, the conventional external antenna is often only used with a small antenna or an antenna frame due to cost and space considerations, which often causes poor reception and inconvenience.

One of the objects of the present invention is that there is no need to externally connect an antenna or an antenna frame.

Another object of the present invention is to use a material such as an existing electrical wire or metal as a receiving carrier for a radio wave signal.

Still another object of the present invention is to provide a radio wave signal receiving system which is convenient and good to receive.

To achieve the above and other objects, a radio signal receiving system for providing a signal to a transceiver includes: a signal capturing module for transmitting electrical wires and metal casings in a power socket. One capture A radio signal; and a signal processing module for spreading the radio signal and increasing the intensity to adjust the signal to the transceiver.

In one embodiment, the signal acquisition module for capturing the electric wave signal through the metal casing comprises: a magnet member for magnetizing on the metal casing; and a coil group surrounding the The magnet component is electrically connected to the signal processing module for current sensing and the frequency of the wave signal is resonated by the setting of the inductance of the coil group to be provided to the signal processing module. The signal acquisition module for extracting the electric wave signal through the electric wire in the power socket comprises: a power plug for plugging into the power socket to capture the power transmitted by the electric wire of the power socket; a power plug for plugging into the power socket to capture power transmitted by the electrical lead of the power socket; a resonant circuit electrically connected to the power isolating conversion circuit for receiving the DC signal and being set The frequency of the radio signal in the DC signal can be resonated to be provided to the signal processing module.

In one embodiment, the signal processing module includes: a bandwidth adjustment matching circuit electrically connected to the signal acquisition module for expanding the frequency of the received signal; and a gain amplification circuit The bandwidth matching matching circuit is configured to maintain the signal amplitude of the radio signal in a predetermined range; and a standing wave adaptation matching circuit is electrically connected between the gain amplifying circuit and the receiver, The signal is generated according to the signal, and is used to eliminate the impedance mismatch when the signal is transmitted to the receiver.

In order to achieve the above and other objects, the present invention further provides a multi-functional radio wave signal receiving system, wherein the signal capturing module includes: a first signal capturing unit, a second signal capturing unit, and a first switching unit. The first signal The capturing unit extracts the electric wave signal through an electric wire in a power socket, and includes a power plug, an electric power isolation conversion circuit, and a resonance circuit; the second signal capturing unit captures the electric wave through the metal casing The signal includes: a magnet member and a coil group; the first switching portion is electrically connected to the first signal capturing portion and the second signal capturing portion, and is configured to selectively switch to the external setting according to the external setting The resonant circuit of the first signal capturing unit and the coil group of the second signal capturing unit output the extracted wave signal.

In one embodiment, the signal capture module further includes: a third signal capture unit and a second switch unit; the third signal capture unit is captured by an electrical wire in a cigarette lighter for a vehicle. The second switching portion is electrically connected between the power isolating conversion circuit and the resonant circuit and is electrically connected to the third signal capturing portion for selectively switching to the external setting. And outputting the captured wave signal by one of the power isolation conversion circuit and the third signal extraction unit of the first signal extraction unit.

Therefore, the present invention uses a material such as an electric wire or a metal as a receiving carrier of the electric wave signal to achieve a better receiving effect, and further provides an integrated multifunctional wave signal receiving system in a switching manner. To achieve a convenient use.

In order to fully understand the objects, features and advantages of the present invention, the present invention will be described in detail by the following specific embodiments and the accompanying drawings. First, please refer to FIG. 1 , which is a block diagram of a system of a radio signal receiving system according to an embodiment of the present invention. The radio wave signal receiving system 200 in the embodiment of the present invention comprises: a signal capturing module 210 and a signal processing module 250. The radio wave signal receiving system 200 is configured to capture the radio wave signal in the space through the radiation receiving carrier 100, and provide a signal to a transceiver 300 after internal processing.

In the embodiment of the present invention, the signal capture module 210 can be used as a receiving carrier to capture the electric wave signal through an electric wire in the power socket, an electric wire in the cigarette lighter for the vehicle, or a metal car shell. At the same time, the signal processing module 250 spreads the frequency signal and increases the intensity to adjust the signal to the transceiver 300.

2 is a block diagram of a signal processing module 250 in the radio signal receiving system 200 in an embodiment of the present invention. The signal processing module 250 includes a bandwidth adaptation matching circuit 251, a gain amplification circuit 253, and a standing wave adaptation matching circuit 255.

The bandwidth matching matching circuit 251 is electrically connected to the signal capturing module 210 for expanding the frequency of the received signal. In actual implementation, a filter of a conventional technique and a spread spectrum controller can be used for implementation. With the radio signal captured by the signal acquisition module 210 of the present invention, the bandwidth of about 100 MHz extracted can be expanded to a bandwidth of 400 MHz.

The gain amplifying circuit 253 is electrically connected to the bandwidth adaptive matching circuit 251 for maintaining the signal amplitude of the wave signal within a predetermined range. In an embodiment of the present invention, the gain amplifying circuit 253 may be, for example, an automatic gain control circuit (AGC) for maintaining The amplifier outputs a signal whose amplitude is approximately constant. In this circuit, the AGC is a negative feedback system that can be divided into two parts: a gain-controlled amplifier circuit and a control voltage-forming circuit. The gain controlled amplification circuit is located in the forward amplification path and its gain varies with the control voltage. The control voltage forming circuit basically includes an AGC detector and a low-pass smoothing filter. Regardless of the amplitude fluctuation of the signal input to the AGC, a DC signal proportional to the amplitude of the signal is sent, and the filtered DC signal and the smoothed output voltage of the signal are used as bias voltages and added to the previous stage with the correct polarity. Or the first few stages of the amplifying circuit to reduce its gain; the stronger the signal input to the AGC, the larger the gain is reduced. As a result, the small signal amplification gain is high, and the large signal amplification gain is small, so that the output signal amplitude is maintained within a certain range. The gain control effect is achieved to stabilize the intensity of the captured radio signal.

The standing wave adaptation matching circuit 255 is electrically connected between the gain amplifying circuit 253 and the receiver 300 to generate the signal according to the electric wave signal, and is used for eliminating the impedance mismatch when the signal is transmitted to the receiver 300. Since the high impedance of the receiver 300 varies with the design of different brands, due to the difference in impedance characteristics, a part of the electromagnetic wave energy is reflected back during transmission, causing an impedance mismatch and generating a standing wave on the transmission line. In order to alleviate this phenomenon, the present invention can implement the standing wave adaptation matching circuit 255 such as an Antenna Tuner Unit (ATU) to adjust the impedance to achieve a good voltage standing wave ratio (Voltage Standing Wave). Ratio, VSWR) output.

Next, please refer to FIG. 3A, which is a radio wave signal in the first embodiment of the present invention. Schematic diagram of the receiving system. In this embodiment, the signal capture module 210 captures the radio wave signal only through the electrical wires in the power socket of the radiation receiving carrier 100. The signal capture module 210 includes: a power plug 211, a The power isolating conversion circuit 212 and a resonant circuit 213.

The power plug 211 is configured to be plugged into the power socket 100 to capture power transmitted by the electrical wires of the power socket 100. The power signal includes the wave signal; and then, the power isolation of the power plug 211 is electrically connected. The circuit 212 (for example, a transformer) converts the power source into a DC signal; finally, the resonant circuit 213 electrically connected to the power isolating conversion circuit 212 receives the DC signal and resonates the frequency of the signal in the DC signal to Provided to the signal processing module 250. The resonant circuit 213 can be an LC circuit, which is set by the parameters of the capacitor C and the inductor L (for example, according to the formula: f=1/(2*π*(LC) ^1/2 ), where f For the resonant frequency, π is the phase), the frequency to be received, that is, the signal of the wave, can be resonated.

Next, please refer to FIG. 3B, which is a schematic diagram of a radio signal receiving system in a second embodiment of the present invention. In this embodiment, the signal capture module 210 captures the radio wave signal only through the metal cover of the radiation receiving carrier 100. The signal capture module 210 includes a magnet member 215 and a coil assembly 216. .

The magnet member 215 is for magnetically absorbing on the metal casing, and for example, a cylindrical structure or other shaped structure as shown in Fig. 3B may be employed. The coil assembly 216 surrounds the magnet member 215 and is electrically connected to the signal processing module 250 for current sensing and by setting the inductance of the coil assembly 216. The frequency of the electric wave signal is resonated to be supplied to the signal processing module 250. In this embodiment, the magnetic lines of the magnet member 215 are converted to the metal shell that is in contact with the magnet housing 215. The coil assembly 216 and the magnet member 215 can also form an inductor, which is matched by the number of turns of the coil assembly 216. The amount of inductance required. The frequency of the desired resonance can be set to 1 μH to 1000 μH (Henry) for the metal car shell of this embodiment.

Next, please refer to FIG. 3C, which is a schematic diagram of a radio signal receiving system in a third embodiment of the present invention. In this embodiment, the two types of use, which are the metal casing of the radiation receiving carrier 100 and the electrical wires in the power socket, are integrated into one system. In actual implementation, the signal capturing module 210 and the signal processing module can be implemented. The 250 is integrated into a device housing and exposes the power plug 21 (including the connection line with the power isolation conversion circuit 212), the magnet member 215, and the coil assembly 216 (including the connection line).

For the purpose of the integration, the signal capture module 210 includes: a first signal capture unit (that is, the electrical signal is extracted through an electrical wire in the power socket as the radiation receiving carrier 100), and a second signal. The receiving portion (that is, the electric wave signal is captured by the metal casing as the radiation receiving carrier 100) and the first switching portion 221. The first switching unit 221 (for example, a path switch) is electrically connected to the first signal capturing unit and the second signal capturing unit, and is configured to selectively switch to the first user according to the setting of the external user. The resonant circuit 213 of the signal capturing unit or the coil group 216 of the second signal capturing unit outputs the extracted wave signal.

Next, please refer to FIG. 3D, which is a schematic diagram of a radio signal receiving system in a fourth embodiment of the present invention. In this embodiment, it is the third of the 3C chart. In the embodiment, a third signal extraction unit is connected. The third signal capturing unit captures the electric wave signal through an electric wire in a car cigarette lighter 218. The signal acquisition module 210 in the fourth embodiment further includes: the third signal extraction unit and the second switching unit 222. The second switching unit 222 is electrically connected between the power isolation conversion circuit 212 and the resonant circuit 213, and is electrically connected to the third signal capturing unit (ie, the vehicle cigarette lighter 218) for According to the external setting, the electric power isolating conversion circuit 212 of the first signal capturing unit or the vehicle cigarette lighter 218 of the third signal capturing unit is selectively switched to output the extracted electric wave signal. Accordingly, when the first switching unit 221 is switched to the resonant circuit 213 and the signal processing module 250 to be electrically connected to each other, the second switching unit 222 is effective. Otherwise, the first switching unit 221 That is, it is switched such that the signal processing module 250 is electrically connected to the coil assembly 216.

The three ways of using the metal casing of the radiation receiving carrier 100, the electrical wires in the power socket 211, and the electrical wires in the cigarette lighter 218 of the vehicle are integrated into one system. In actual implementation, the signal capturing module 210 can be implemented. And the signal processing module 250 is integrated in a device housing, and exposes the power plug 211 (including the connection line with the power isolation conversion circuit 212), the magnet member 215, the coil group 216 (including the connection line), and the cigarette light for the vehicle. 218 (including the connection line).

The invention has been described above in terms of the preferred embodiments, and it should be understood by those skilled in the art that the present invention is not intended to limit the scope of the invention. It should be noted that variations and permutations equivalent to those of the embodiments are intended to be included within the scope of the present invention. Therefore, the scope of protection of the present invention is defined by the scope of the patent application.

100‧‧‧radiation receiving carrier

200‧‧‧Electronic wave signal receiving system

210‧‧‧Signal capture module

211‧‧‧Power plug

212‧‧‧Power isolation conversion circuit

213‧‧‧Resonance circuit

215‧‧‧Magnetic parts

216‧‧‧ coil set

218‧‧‧Car cigarette lighter

221‧‧‧First Switching Department

222‧‧‧Second switching department

250‧‧‧Signal Processing Module

251‧‧‧Bandwidth adaptation matching circuit

253‧‧‧ Gain Amplifier Circuit

255‧‧‧Standed wave adaptation matching circuit

300‧‧‧ transceiver

FIG. 1 is a block diagram showing a system of a radio wave signal receiving system according to an embodiment of the present invention.

FIG. 2 is a block diagram of a signal processing module in a radio wave signal receiving system according to an embodiment of the present invention.

Fig. 3A is a schematic diagram of a radio wave signal receiving system in the first embodiment of the present invention.

FIG. 3B is a schematic diagram of a radio wave signal receiving system in the second embodiment of the present invention.

Fig. 3C is a schematic diagram of a radio wave signal receiving system in the third embodiment of the present invention.

3D is a schematic diagram of a radio wave signal receiving system in a fourth embodiment of the present invention.

100‧‧‧radiation receiving carrier

200‧‧‧Electronic wave signal receiving system

210‧‧‧Signal capture module

250‧‧‧Signal Processing Module

300‧‧‧ transceiver

Claims (4)

A radio signal receiving system for providing a signal to a transceiver, comprising: a signal capturing module for extracting a radio wave through one of an electric wire and a metal casing in a power socket And a signal processing module for spreading the frequency signal to increase the intensity to adjust the signal to the transceiver, wherein the signal is captured by the metal casing The capture module includes: a magnet member for magnetizing on the metal car shell; and a coil group surrounding the magnet member and electrically connected to the signal processing module for current sensing and by The inductance of the coil set is set to resonate the frequency of the electric wave signal to be supplied to the signal processing module; and the signal acquisition module that extracts the electric wave signal through the electric wire in the power socket The utility model comprises: a power plug, which is used for plugging into the power socket to capture the power source transmitted by the electric wire of the power socket; a power isolation conversion circuit electrically connecting the power plug for converting the power source into one And a resonant circuit electrically connected to the power isolating circuit for receiving the DC signal and configured to resonate the frequency of the signal in the DC signal to provide to the signal processing mode group. A radio signal receiving system is configured to capture a radio wave signal and convert it into a signal provided to a transceiver, comprising: a signal capturing module, comprising: a first signal capturing unit, transmitting a power source The electric wire in the socket captures the electric wave signal, and the first signal capturing part comprises: a power plug for plugging into the power socket, and the power plug electrically connected to the power plug and used for transmitting the power socket a power isolation conversion circuit for the continuous current signal, and a resonant circuit electrically connected to the power isolation conversion circuit and configured to resonate the frequency of the wave signal in the DC signal; a second signal acquisition unit The electric wave signal is captured through the metal casing, and the second signal capturing portion includes: a magnet member magnetically attracted to the metal casing, and a magnetic component surrounding the magnet member for current sensing and the inductance of the coil. a coil group for resonating the frequency of the radio signal; and a first switching portion electrically connected to the first signal capturing portion and the second signal capturing portion for setting according to an external Selectively switching between the resonant circuit of the first signal capturing portion and the coil group of the second signal capturing portion to output the extracted wave signal; and a signal processing module The group is electrically connected to the first switching unit for spreading the received wave signal and increasing the intensity to adjust the signal provided to the transceiver. The radio signal receiving system according to claim 2, wherein the The signal acquisition module further comprises: a third signal acquisition unit that extracts the electric wave signal through an electric wire in a cigarette lighter; and a second switching portion electrically connected to the power isolation conversion The third signal extraction unit is electrically connected between the circuit and the resonant circuit, and is configured to be selectively switched to the power isolation conversion circuit and the third signal by the first signal extraction unit according to an external setting. The signal acquisition unit outputs one of the extracted radio signals. The radio signal receiving system of claim 1 or 3, wherein the signal processing module comprises: a bandwidth matching matching circuit electrically connected to the first switching part of the signal capturing module, Extending the frequency of the received signal of the electric wave; a gain amplifying circuit electrically connecting the bandwidth matching matching circuit for maintaining the signal amplitude of the electric wave signal within a predetermined range; and a standing wave matching matching circuit, The signal is electrically connected between the gain amplifying circuit and the receiver to generate the signal according to the signal, and is used for eliminating impedance mismatch when transmitting the signal to the receiver.