KR20080078222A - Reduce apparatus of electromagnetic wave - Google Patents

Abstract

The present invention relates to an electromagnetic wave reduction device, comprising: an electromagnetic wave shield for absorbing electromagnetic waves generated in the transmission and reception antenna and an electromagnetic wave shield for absorbing electromagnetic waves generated by the transmission and reception antenna. A back voltage full wave rectifier comprising a plurality of diodes and capacitors that converts electromagnetic waves into voltages and doubles the voltage at the same time. By providing a device that includes an energy-consuming unit, it is simple to configure and does not need to take action on every signal line, so it can be applied to a device having a small space for attaching parts and a small mobile phone, and a signal emitted from a receiving antenna or an electromagnetic shielding unit. According to the size of If there the consuming device can be a variable has an effect, such as an easy application to various devices.

Description

Reduce apparatus of electromagnetic wave

1 is a plan view showing the configuration of a conventional electromagnetic shielding device for mobile phones.

Figure 2 is an exemplary view briefly showing the internal configuration of the electromagnetic shielding device for a conventional mobile phone.

Figure 3 is a simplified block diagram showing the configuration of the electromagnetic wave reduction device according to an embodiment of the present invention.

Figure 4 is a circuit diagram showing in detail the configuration of the electromagnetic wave reduction device according to an embodiment of the present invention.

** Description of the major symbols used in the drawings **

100: shielding device 200: antenna unit

210: electromagnetic shield 220: back pressure full wave rectifier

221: matching inductor 222, 223: diode

224, 225: capacitor 230: energy consumption unit

The present invention relates to a device for reducing electromagnetic waves, and more particularly, to an apparatus for shielding electromagnetic waves from an electronic communication device and using the electromagnetic waves as an energy source.

In general, the electromagnetic wave reduction device uses a filter or a shielding material in the case of a portable product that can not be connected to the ground, and in the case of a table-type or floor-mounted product has been known to reduce the electromagnetic wave through the ground, and representatively electromagnetic shielding As a prior art device, there is cited example 1 (Korean Patent Publication No. 2003-73380), which will be described in FIG.

1 is a plan view showing the configuration of an electromagnetic wave shielding device for a conventional mobile phone, as shown in the center of the elliptical substrate 120, the LED 130 to emit light by external energy such as electromagnetic waves, the LED Copper wires (110, 140) is connected to the 130 and is located to the left and right to induce electromagnetic waves, a copper foil plate that is connected to the ends of the copper wires (110, 140) to protrude to the outside and easily bent with a finger The copper wires 110 and 140 are formed to have a large surface area in the same space and are configured to absorb relatively many electromagnetic waves.

More specifically, FIG. 2 is an exemplary view briefly illustrating an internal configuration of a conventional electromagnetic wave shielding device for a mobile phone. As shown therein, an adhesive layer 160 is formed below the substrate 120 layer, and the substrate 120 is shown. The copper wire protection layer 180 is formed at the outermost of the layer so that the LED 130 and the copper wires 110 and 140 are surrounded by the copper wire protection layer 180 to be protected by external impact or contact. By the action of the adhesive layer 160, the shielding device 100 may be attached to a portion where electromagnetic waves are generated, and the adhesive layer 160 has an adhesive force that does not leave even when an external force is applied, It is made of adhesive that can be attached once and then removed again.

However, in the conventional electromagnetic shielding device, in the device using a countermeasure component including a filter, a countermeasure and complexity must be taken for a component or a circuit which generates electromagnetic waves. Whether or not a capacitor can be used is determined by the design method of the PCB, so if there is a lot of design experience or an expert on electromagnetic problems, there is a problem of finding a cause and a solution while undergoing a lot of trial and error.

In addition, the conventional electromagnetic wave shielding device is mainly used to directly consume the energy generated by the electromagnetic wave generated in the electrical appliances, passive components, because all parts or signal lines must be connected to the parts are subject to spatial constraints, In the case of trying to solve this by grounding or shielding material, there is a problem that the performance is significantly reduced when there is vibration or carrying because of poor reproducibility.

Accordingly, an object of the present invention is to provide a device using an electromagnetic wave generated by itself and an external reception high frequency as an energy source.

An electromagnetic wave reduction apparatus according to the present invention for achieving the above object, in the electromagnetic wave reduction apparatus for reducing the electromagnetic wave of the electronic communication device having a transmission and reception antenna, the electromagnetic shielding part for absorbing the electromagnetic waves generated in the transmission and reception antenna, A back pressure full wave rectifier comprising a plurality of diodes and capacitors that converts the electromagnetic wave absorbed by the electromagnetic wave shield into a voltage and doubles the voltage at the same time. Characterized in that it comprises an energy consumption for consuming the voltage.

Hereinafter, the configuration according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

3 is a block diagram briefly illustrating a configuration of an electromagnetic wave reducing apparatus according to an exemplary embodiment of the present invention.

4 is a circuit diagram showing in detail the configuration of the electromagnetic wave reduction device according to an embodiment of the present invention.

As shown in FIG. 3, the electromagnetic wave reduction device according to the present invention includes an electromagnetic wave shielding portion 210 that absorbs electromagnetic waves generated by the antenna unit 200 having a transmission / reception antenna, and the electromagnetic wave shielding portion 210 absorbed by the electromagnetic wave shielding portion 210. The voltage converted by the back pressure full wave rectifier 220 and the back pressure full wave rectifier 220 including the first and second diodes 222 and 223 and the capacitors 224 and 225 which converts electromagnetic waves into voltages and doubles the voltage. An energy consumption unit 230 for consuming, and as shown in Figure 4 includes a matching inductor 221 for matching the electromagnetic shield 210 and the back pressure full-wave rectifier 220.

In addition, the first and second diodes 222 and 223 and the capacitors 224 and 225 have an anode of the first diode 222 whose anode is connected to one end of the variable inductor 221 through the first node N1. Is connected in series to one side of the first capacitor 224 through a second node N2, the other side of the first capacitor 224 is connected in parallel to one side of the second capacitor 225, and the second capacitor ( The other side of 225 is connected to the anode of the second diode 223 through a third node N3, and the cathode of the second diode 223 is connected to the first diode 222 through the first node N1. It is connected in parallel to the anode of), and a diode and a capacitor are composed of one pair connected in series, and operate according to the polarity (+ or-) of the voltage.

In addition, the energy consumption unit 230 may employ a zener diode or an LED, and a capacitor may be used due to high frequency characteristics. In this embodiment, an LED is employed, and one side of the LED 230 is connected to the second node N2 between the first diode 222 and the first capacitor 224, and the other side is the second diode 223. ) And the third node N3 between the second capacitor 225.

Referring to the accompanying drawings, the operation process according to an embodiment of the present invention configured as described above will be described in detail as follows.

As shown in FIG. 4, the electromagnetic shield 210 absorbs and shields internal electromagnetic waves generated from the antenna unit 200, and has a predetermined distance from the antenna unit 200 in which electromagnetic waves are strongly generated. It is formed of a conductive material in the enclosed form or coated laminated state.

Thereafter, the back pressure full wave rectifying unit 220 converts the internal electromagnetic wave absorbed by the electromagnetic shielding unit 210 into a voltage, and the antenna unit 200 secures resonance characteristics at a frequency used to maximize signal reception. You should tune it so that it can.

For this purpose, the inductor value is changed in the matching inductor 221 so that the antenna tuning always resonates at the use frequency.

In addition, the back pressure full-wave rectifier 220 includes two diodes 222 and 223 and capacitors 224 and 225. One diode and one capacitor are formed in a pair connected in series, and the polarity of the voltage (+ Or-) respectively.

That is, the diode 222 and the capacitor 224 to operate when the positive voltage, and the diode 223 and the capacitor 225 to operate when the negative voltage (-) energy consumption unit ( In the case of adopting an LED (LED) as 230, it is possible to prevent the problem of operating only one of + or-voltage depending on the polarity, and to operate regardless of the direction of the frequency received by the antenna unit 200. To improve the directionality of the.

Here, the first and second capacitors 224 and 225 may temporarily charge the input voltage, that is, the microscopic peak voltage, or charge the charge according to the input voltage to mitigate shock when consumed by the energy consuming part. do. In addition, it functions as a compound ash through the discharge during the charge only.

The voltage back-pressured by the back pressure full wave rectifying unit 220 is consumed by the energy consumption unit 230. In other words, the method consumes heat and consumes light. The method consumes heat uses a zener voltage of a zener diode or a plurality of diodes in a forward direction to make a desired voltage.

In addition, the method of consuming light is a method using a device for emitting light, such as LED (LED, 230), as shown in Figure 4, a capacity suitable for the size of the signal emitted from the electromagnetic shielding unit 210 LEDs are used.

In addition, since the original signal is a high frequency, a certain amount of effect is obtained even by using a capacitor.

As described above, the electromagnetic wave reduction device according to the present invention is simple in configuration and does not have to take action on every signal line, and thus can be applied to a device and a small mobile phone that have insufficient space to attach parts, and receive antenna or electromagnetic shielding portion. The energy consumption device can be varied according to the size of the signal emitted from the device, and thus it is easy to apply to various devices.

Claims (4)

In the electromagnetic wave reducing apparatus for reducing the electromagnetic waves of the electronic communication device having a transmission and reception antenna, An electromagnetic shielding part for absorbing electromagnetic waves generated from the transmission / reception antenna; A back pressure full wave rectifier comprising a plurality of diodes and capacitors for converting the electromagnetic wave absorbed by the electromagnetic shielding part into a voltage and doubling the voltage at the same time; A matching inductor for matching the electromagnetic shielding unit and the back pressure full-wave rectifying unit; And an energy consumption unit for consuming the voltage converted by the back pressure full wave rectifier. The method of claim 1, The energy consuming unit is a electromagnetic wave reduction device, characterized in that the zener diode or LED (LED) or a capacitor. The method of claim 1, wherein the back pressure full-wave rectifying unit The cathode of the first diode, the anode of which is connected to one end of the matching inductor through a first node, is connected in series with one side of the first capacitor via a second node, and the other side of the first capacitor is parallel to one side of the second capacitor. The other side of the second capacitor is connected to the anode of the second diode through a third node, and the cathode of the second diode is connected in parallel to the anode of the first diode through the first node. Electromagnetic wave reduction device. The method of claim 1, wherein the energy consumption portion One side is connected to the second node between the first diode and the first capacitor, and the other side is connected to the third node between the second diode and the second capacitor.

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