KR200217238Y1 - ADSL POTS Splitter consist of pair-inductor made of magnetic-shielding-frame dual drum ferrite core - Google Patents

Abstract

The present invention combines a pair inductor made of a self-shielding double drum-shaped ferrite core on a balanced telephone subscriber line composed of first and second lines, and combines a capacitor in parallel with the pair inductor to a predetermined frequency band. A balanced line of subscriber subscribers comprising a first line and a second line of an ADSL pots splitter having a pair inductor using a magnetic shield structure double drum ferrite core. In the ADSL POTS splitter, in which the first line and the second line are coupled to a telephone through a predetermined filter means composed of a pair of inductor and a capacitor coupled to the line and coupled between the lines, The pair of inductors configured in the filter means have first to third flanges at both ends of the roll for winding the coil and at the center outer circumference. And a double drum ferrite core comprising: a first coil wound between a first flange and a second flange of the double drum ferrite core; a second coil wound between a second flange and a third flange of the double drum ferrite core; The first coil and the second coil is characterized in that it comprises a cylindrical ferrite core coupled to surround the outside of the ferrite core in the wound state.

Description

ADSL POTS Splitter consist of pair-inductor made of magnetic-shielding-frame dual drum ferrite core}

The present invention relates to an ADSL pot splitter, and more particularly, in combination with a paired inductor made of a self-shielding double drum-shaped ferrite core on a balanced telephone subscriber line composed of first and second lines. The present invention relates to an ADSL pots splitter having a pair inductor using a self shielding double-drum ferrite core configured to couple a capacitor in parallel with a pair inductor to filter a predetermined frequency band.

At present, an asymmetric digital subscriber line system has been developed and distributed to provide a voice call service through a telephone and to perform a high-speed data service at a low cost.

1 is a system schematic diagram showing a schematic configuration of a general asymmetric digital subscriber line (ADSL) system.

As shown in Fig. 1, the asymmetric digital subscriber system transmits a signal received from a data communication network 11, such as the Internet network, and a PSTN network 12, which provides a conventional telephone call service, through a network splitter 13. 30), and the service network system 10 for transmitting the data received from the subscriber system 20 to be described later by dividing the signal to the data communication network 11 and the PSTN network 12, and the service network. The signal received from the system 10 via the line 30 is divided into frequencies and transmitted to the modems 2 and 2, and the signals received from the computer terminal 23 through the modem 22 and the like. The signal received from the telephone 24 is transmitted to the service network system 10 through the line 30.

Here, the subscriber splitter 21 is commonly referred to as an ADSL (Pots) splitter or a micro filter in a communication system, which will be collectively referred to as a splitter hereinafter. As shown in Fig. 2 (A) shows a low-pass filter applied to a micro filter that does not require much attenuation at a specified frequency. An example of a lowpass filter that requires high attenuation at a given frequency required in a full DMT ADSL system.

That is, the low-pass filter shown in FIG. 2A is connected to the first inductor L1 and the second line, ie, the RING line, inserted into the first line of the line 30, that is, the tip TIP line. The second inductor L2 to be inserted and the capacitor C1 connected in parallel to the first inductor L1 and the second inductor L2, and FIG. 2B is a low range shown in (A). The low pass filter is configured by further including third and fourth inductors L3 and L4 and second to fourth capacitors C2 to C4 in the pass filter.

However, as shown in FIG. 2, when the splitter is formed by providing the inductors in the tip line and the ring line, the first inductor L1 and the second inductor coupled to the tip line and the ring line, respectively. The 12th inductor L12 and the 12th inductor L12 constituting L2 and the third inductor L3 and the 34th inductor L34 constituting the fourth inductor L4 cannot be maintained at a predetermined distance. If the 34 inductor L34 does not shield the magnetic flux emitted to the outside, the magnetic coupling degree between the twelfth inductor L12 and the 34th inductor L34 is changed, thereby causing a problem that the optimally set inductance value is changed. Therefore, in order to obtain the optimum inductance value without the magnetic coupling effect, a larger number of coils must be wound around the ferrite core, and the increase in the number of windings causes an increase in the DC resistance, which increases the insertion loss as well as the direct current. There is a problem that the superposition characteristics deteriorate.

Accordingly, the applicant has applied for an ADSL splitter comprising a double inductor on a balanced line as described in the application number 00-14234.

Here, the splitter is configured by combining a pair of inductor and a capacitor, and can be configured by combining a plurality of pairs of inductor and a capacitor, and the filtering characteristics of the splitter appear differently according to the coupling configuration.

For example, as shown in FIG. 3 (I), two pairs of pair inductors L and capacitors C are compared to the splitter A1 formed by combining a pair of pair inductors L and capacitors C. FIG. ), The filtering characteristic of the splitter A2 constituted by combining is good.

However, when the pair inductor 30 is coupled to the balance line to implement a splitter, the pair inductor is configured to have a shape as shown in FIG. 3 (J). In this case, the pair inductor 30 The magnetic flux (M) generated at is emitted to the outside, as shown in Figure 3 (J).

Therefore, when the plurality of pair inductors 30 are arranged in close proximity as shown in FIG. 3 (K), the magnetic flux M between the first pair inductor and the second pair inductors is not magnetically shielded. ) Is linked to each other (Link), the change in the inductance value of the pair inductor 30, there is a problem that the filter characteristics in the initial design can not be obtained.

On the other hand, in view of the above circumstances, in order to have an optimal inductance value in the configuration as shown in Fig. 3J, the number of windings of the coil wound around the ferrite core 31 must be increased. The increase is a cause of increasing the DC resistance, thereby causing a problem that the filtering characteristics of the splitter having the double inductor 30 is deteriorated.

Accordingly, the present invention was conceived in view of the above circumstances, and after winding the first and second coils to the double drum-shaped ferrite cores, respectively, the predetermined cylindrical ferrite core is coupled to the outside of the coil wound ferrite core. A pair inductor using a self-shielding double-drum ferrite core that can improve the filtering characteristics of the splitter by coupling a pair of inductors configured to shield magnetic flux to a balance line and coupling a capacitor in parallel with the pair inductors. It is a technical object to provide an ADSL POSS splitter equipped with.

1 is a system schematic diagram showing a schematic configuration of a typical asymmetric digital subscriber line (ADSL) system.

FIG. 2 is a circuit diagram showing the configuration of the splitter shown in FIG.

Figure 3 is a view for explaining the characteristics of a conventional double inductor.

Figure 4 is a view showing the internal structure of the ADSL splitter splitter according to the present invention.

5 to 6 are views for explaining the configuration of the pair inductor 50 shown in FIG.

***** Brief description of the main parts of the drawings *****

50: twin inductor, 51: inductor,

511: double drum ferrite core, 512: coil,

52: support, 53: cylindrical ferrite core,

100: splitter,

L: inductor, C: capacitor,

SA: surge observer, M: flux

In order to achieve the above object, an ASL POS splitter equipped with a pair inductor using a dual shield ferrite core having a magnetic shield structure, a balanced line including a first line and a second line is coupled with a modem, In an ADSL pots splitter, in which the first line and the second line are coupled to a telephone through a predetermined filter means composed of pair inductors and capacitors coupled between the lines, a pair configured in the filter means. The inductor has a double drum ferrite core having first to third flanges formed at both ends and a center outer circumference of the roll for winding the coil, and a first coil wound between the first flange and the second flange of the double drum ferrite core. And a second coil wound between the second flange and the third flange of the double drum ferrite core, and the first coil and the second coil are wound. And a cylindrical ferrite core coupled to surround the outside of the ferrite core in a closed state.

That is, according to the present invention, in implementing a splitter for ASD to filter a predetermined frequency signal band by combining a pair of inductors and a capacitor on a balance line, the inductor is a dual drum-shaped ferrite core coil in two stages. It is wound up and the outer periphery of the coil wound ferrite core is surrounded by cylindrical ferrite core to shield the magnetic flux radiating to the outside, thereby preventing the external flux of magnetic flux generated from the inductor and preventing the inductance between the inductors. As a result, it is possible to maintain the filtering characteristics of the splitter as well as to reduce the size of the ADS splitter.

Next, an embodiment according to the present invention will be described with reference to the accompanying drawings.

Figure 4 is a view showing the internal configuration of the ADS POS splitter with a pair inductor using a double drum ferrite core according to the present invention.

As shown in Figure 4, the splitter 50 according to the present invention is coupled to the modem 22 in a balanced line (Balanced line) coupled with the line 30, such as lightning between both ends of each line Surge Absorber (SA) for over-voltage protection due to the shunt, the 10th and 20th inductors (L10, L20), the 10th capacitor (C10), the 30th and 40th inductors (L30, L40) and the 20th capacitor (C20) are each combined in parallel.

The thirtieth capacitor C30 and the forty th capacitor C40 are coupled in series with each other between the tenth capacitor C10 and the twentieth capacitor C20, respectively, in parallel with the thirtieth capacitor C30. The 30th inductor L30 is coupled to the 40th inductor L40 in parallel with the 40th capacitor C40.

That is, according to FIG. 4, a first filtering is performed on a signal applied from the line 30 by combining a tenth inductor L10, a twelfth inductor L20, and a tenth capacitor C10, and the 20th inductor L10. L20) and a combination of the 30th inductor L30 and the 20th to 40th capacitors C20 to C30 to perform secondary filtering on the primary filtered signal, thereby for example in a signal received through the circuit 30, for example. Signals in the 0-4 KHz band are filtered and sent to the telephone 24.

In this case, the splitter 100 may be configured by combining a plurality of filtering means composed of an inductor and a capacitor.

Meanwhile, in FIG. 4, the tenth and twelfth inductors L10 and L20 and the thirtieth and forty inductors L30 and L40 are implemented by paired inductors 50 as shown in FIG. 5. FIG. 5 is an exploded perspective view for explaining the configuration of the pair inductor 50 shown in FIG. 4.

As shown in FIG. 5, the pair inductor 50 includes an inductor 51 formed by winding a coil 512 in two stages in a double-drum ferrite core 511, an inductor support 52, and It is composed of a cylindrical ferrite core 53 is formed in a cylindrical shape to surround the outer periphery of the inductor 51 to form a magnetic flux of the magnetic flux generated in the ferrite core 511 of the inductor 51.

Here, the inductor 511 is a roll 511a for winding the coil, and the first coil 512a and the second coil 512b formed on the outer peripheries of both ends and the center of the roll 511a and wound. The first to third flanges (511b; 511b _{1 to} 511b ₃ ) for fixing the grooves, the first to third flanges 511b to form a predetermined groove (511c), the ferrite core 511 In winding the first coil 512a and the second coil 512b wound on the roll 511a, windings of the same number of times are wound and prevented from being disturbed even after being wound.

In addition, the first coil 512a and the second coil 512b are connected to the coupling pins of the support 52 to be soldered and coupled to the balance line through the coupling pins. A cylindrical body 521 for seating the inductor 51, a locking projection 522 for supporting the inductor 51 to protrude to both sides of the inner surface of the body 521, the upper portion of the body 521 Guide grooves 523 formed side by side to guide the paths of the first coil 512a and the second coil 512b, and the first and second coils 512 guided through the guide grooves 523. Combination pins 524 for coupling to both ends of the, and is configured at the lower end of the body 521 is composed of a support pin 525 for supporting the body 521.

That is, the inductor 51 is supported by the support 52 to be fixed to a predetermined PCB substrate for implementing the splitter 100.

Meanwhile, in FIG. 5, the cylindrical ferrite core 53 is formed of the same material as the ferrite core, and FIG. 6 is a view showing the external shape of the twin inductor 50 shown in FIG. 5.

In Figure 6 (X) is an external perspective view of the twin inductor 50 according to the present invention, (Y) is a coupling cross-sectional view of the twin inductor 50 according to the present invention, twin inductor 50 according to the present invention is As shown in 6 (Y), the magnetic flux M generated in the inductor 51 is prevented from leaking to the outside by the cylindrical ferrite core 53 coupled to the outer circumference of the inductor 51.

Therefore, according to the above embodiment, in the implementation of the DSL splitter for filtering a predetermined frequency signal band by combining a pair inductor and a capacitor on a balance line, the inductor is provided with two stages of coils in a double drum-shaped ferrite core. It is possible to maintain good filtering characteristics of the splitter by winding the coil and winding the outer periphery of the ferrite core wound with the coil with the cylindrical ferrite core.

That is, the pair inductor constituting the splitter has a predetermined magnetic path shape means to prevent the external flux of the magnetic flux generated in the inductor, and also prevent the external magnetic flux from interlinking with the coil inside the pair inductor. Therefore, there is a reduction in the number of turns of the coil, thereby reducing the size of the double inductor, thereby reducing the size of the ADS splitter.

On the other hand, the present invention is not limited to the above embodiments and can be carried out in various modifications without departing from the technical spirit of the present invention.

As described above, according to the present invention, in implementing a splitter for ASD to filter a predetermined frequency signal band by combining a pair of inductors and a capacitor on a balance line, the inductor is a coil in a double drum-shaped ferrite core. It is wound in two stages, and the outer periphery of the coil wound ferrite core is surrounded by the cylindrical ferrite core to shield the magnetic flux emitted from the outside, thereby preventing external leakage of the magnetic flux generated from the inductor, and linkage between the inductors. It is possible to prevent the occurrence and as a result maintain the filtering characteristics of the splitter as well as to reduce the size of the ADS splitter.

Claims (2)

A balanced line composed of a first line and a second line is coupled with a modem, and the first line and the second line are coupled with a telephone through a predetermined filter means composed of pair inductors and capacitors coupled between the lines. In ADSL Pots Splitter, The pair inductor configured in the filter means includes a double drum ferrite core having first to third flanges formed at both ends of the roll for winding the coil and the center outer circumference thereof; A first coil wound between the first flange and the second flange of the double drum ferrite core, A second coil wound between the second flange and the third flange of the double drum ferrite core, An AD provided with a pair inductor using a magnetic shield structure double drum ferrite core, characterized in that it comprises a cylindrical ferrite core coupled to surround the outside of the ferrite core in the first coil and the second coil wound state SL Pods Splitter. The method of claim 1, The filter means of the pair inductor is configured in combination with a predetermined support, The support is formed in a cylindrical body for seating the filter means, the engaging projection for supporting the filter means to protrude to both sides of the inner side of the body, parallel to the upper side of the body and the first coil and the first Guide grooves for guiding the path of the two coils, coupling pins for coupling with both ends of the first and second coils guided through the guide grooves, and support pins for supporting the body is configured at the bottom of the body ADSL pot splitter with a pair inductor using a magnetic shield structure dual-drum ferrite core, characterized in that consisting of.