KR101620681B1 - Isolator - Google Patents

Abstract

The present invention relates to an isolator, which is a non-reversible transmission circuit element, and includes an isolator housing and a lower disc-shaped pole piece and a disc-shaped cover, which are made of a conductor and into which a circulation resonator and a power detector can be inserted, an upper disc-shaped pole piece, The first and second ferrite resonators and the lower and upper permanent magnets are manufactured in an arbitrary form and the lower pole piece, the lower permanent magnet, the lower pole piece, the first ferrite resonator, and the second ferrite resonator are formed in the accommodating space of the isolator housing. And the upper pole piece, the power detector, and the upper pole piece are arranged in any form, and the disk-shaped cover presses the power detector downward, and the center conductor, the second ferrite resonator, the upper pole piece, the upper permanent magnet, And is fixed to the housing, so that the power detector The isolator of the operations including the power detection by the power-up detector do not increase the area is performed.

Isolator, circulator, power detector

Description

ISOLATOR WITH POWER DETECTOR INSIDE BOTTOM OF COVER

1 is a schematic view showing an example of a conventional isolator,

FIG. 2 is a perspective view of the isolator shown in FIG. 1,

3 is an assembled cross-sectional view of the isolator shown in Fig. 2,

Figure 4 is a schematic view of an isolator according to the present invention,

FIG. 5 is a perspective view of the isolator shown in FIG. 4,

FIG. 6 is an assembled cross-sectional view of the isolator shown in FIG. 5,

- Description of the main parts of the accompanying drawings -

100; Isolator housing, o o 100a; Threaded, o o o o110; Base,

110a; Register seating groove, o o 110b; Housing fastening groove,

120a, 120b, 120c; Storage exterior protrusion, o o o 200; The first resonator,

40; Center conductor, o o o 41; Input terminal, oo o 42, Output terminal,

43; A resistor terminal portion, o o o 400; A second resonator, o o o 500, 600; Permanent magnets,

Disc type pole piece, o o o o 70, disc type cover, o o 71, thread,

o o 60; Power detector, o o 61; Power conversion voltage output terminal,

8; Register, o o H10; Storage space, o o H20; Input terminal exposure space, o o H30; Output terminal exposed area, o o H40; Exposure space of register terminal.

The present invention relates to an isolator, and more particularly, to an isolator including a power detector by inserting a non-magnetic power detector into an isolator composed of an isolator housing and an isolator cover. A nonmagnetic power detector for detecting the intensity of the reflected power returned from the isolator output terminal is built in the bottom of the isolator cover to perform the isolator function while simultaneously performing the power detection function without increasing the cross sectional area. To an isolator in which the function is improved by including a power detection function using an isolator having the same cross-sectional area.

An isolator used in a radio wave transmission system is referred to as an irreversible transmission circuit element due to the characteristic of transmitting electromagnetic waves in one direction of the transmission line but suppressing the transmission of electromagnetic waves in the opposite direction.

Such an isolator uses a large Faraday rotation angle of a magnetic body. This is because the DC magnetic field is rotated in one direction due to the internal magnetic field in the magnetic body and the rotation of the electromagnetic wave feretode in a given environment, .

The isolator includes a center conductor as a propagation medium of a conductor material; A first and a second resonator of a ferrite material which surrounds the center conductor in a sandwich form and resonates a radio wave flowing through the center conductor; A permanent magnet for supplying magnetic force to the first and second resonators; A pole piece made of a magnetic material and magnetized by the permanent magnet to transmit a uniform magnetic force to the first and second resonators; An isolator housing of a conductive material in which these components are housed; A cover of a conductive material for keeping the magnetic field formed around the center conductor constant while compressing and sealing the components incorporated in the isolator housing; And a resistor for converting reflected radio waves from the center conductor into heat energy and radiating heat to the outside.

In detail, since the magnetic force from the permanent magnet is uniformly transmitted to the first and second resonators through the pole piece, a constant magnetic field is formed in the first and second resonators and the center conductor having three terminals at an angle of 120 degrees The radio wave is rotated in one direction. In this state, when the radio wave is applied to one terminal of the center conductor, the Faraday rotation angle effect by the first and second resonators causes the output terminal of the center conductor where the radio wave is positioned at a 120- Lt; / RTI > On the other hand, the reflected radio wave reflected from the output terminal of the center conductor is led to a resistor terminal located at an angle of 120 degrees in the same direction with respect to the output terminal and at 240 degrees from the input terminal, converted into heat energy, Unnecessary radio waves reflected from the terminal are transmitted to the input terminal located at an angle of 120 degrees from the resistor terminal in the same direction and at 360 degrees from the input terminal so that the reflected radio wave is suppressed by the energy consumed at the resistor terminal at the input terminal, The isolation from the terminal to the input terminal is implemented.

Along with technological development, isolators are also being studied in various ways to improve the irreversible transmission characteristics, lowering the cost, improving the mass productivity and decreasing the volume, and some of them are widely used.

1, 2, and 3, a first and a second resonators 200 and 400 of ferrite material that surround a center conductor 40, which is a propagation medium of a conductor material, in a sandwich form and resonate a radio wave flowing through the center conductor 40 ); Permanent magnets (500, 600) for supplying magnetic force to the first and second resonators (200, 400); Pole pieces 51, 52, 53, 54 of magnetic material which are magnetized by the permanent magnets 500, 600 to transmit a uniform magnetic force to the first and second resonators 200, 400; A circular accommodating space H10 protruded upward from the base 110 with an arbitrary interval between the accommodating portions 120a, 120b and 120c and opened to the upper side, An isolator housing 100 made of a conductive magnetic material material in which a resistor terminal portion exposure space H40, a resistor seating portion 110a, and a fastening through hole 110b are formed; A conductive magnetic material material which keeps a constant magnetic environment formed around the center conductor 40 while sealing the constituent elements 54, 600, 51, 200, 40, 400, 52, 500, 53 housed in the storage space H10 of the isolator housing 100 Of the cover (70); And a resistor (8) for converting the return electric wave from the center conductor (40) into heat energy and radiating heat to the outside.

According to the present embodiment, the isolator housing 100 is formed integrally with the base 110 in the housings 120a, 120b and 120c and is made of a conductive magnetic material. The first and second resonators 200 and 400, The pole pieces 54 and 52 and the cover 70 are formed in a disc shape so that the pole piece 54 and the permanent magnet 600 are inserted into the accommodating space H10 of the isolator housing 100, The pole piece 51, the first resonator 200 and the center conductor 40, the second resonator 400, the pole piece 52 and the permanent magnet 500, and the pole piece 53 are sequentially stacked, The cover 70 is fixed to the isolator housing 100 while covering the upper surface of the laminated component. The diameter of the disc-shaped components 54, 600, 51, 200, 40, 400, 52, 500, 53, 70 is made slightly smaller so that these components can be easily inserted into the storage space H10.

Since the isolator housing 100 is made of a magnetic material and the entirety of the isolator housing 100 is magnetized by the permanent magnets 500 and 600 so that the permanent magnets 500 and 600 are not inserted into the first resonator 200, A uniform magnetic force is applied to the first resonator 200 through the isolator housing 100. Also, the magnetic force from the permanent magnets 500 and 600 is indirectly and uniformly applied to the second resonator 400 through the pole pieces 51, 52, 53 and 54 and the isolator housing 100.

Therefore, all portions except for the essential space for grounding, that is, the lateral exposure spaces H20, H30, and H40 of the isolator housing 100 are kept magnetized, so that the center conductor 40 and the first and second resonators An effective magnetic field environment is formed around the first and second magnetic poles (200, 400). Since the magnetic force from the permanent magnets 500 and 600 is uniformly applied through the isolator housing 100 and the pole pieces 51, 52, 53, and 54, irreversible transfer function of the isolator is greatly improved.

A screw thread 71 is formed on the outer circumferential surface of the cover 70 and a corresponding screw thread 100a is formed on the inner circumferential surface of the upper end of the accommodating portions 120a, 120b and 120c of the isolator housing 100, 120b, and 120c of the isolator housing 100 (see FIG. 3).

However, even in this embodiment, the electric power inputted from the input terminal is transmitted to the output terminal, the electric power reflected from the output terminal is converted into the heat energy by the resistor terminal, and then dissipated through the housing to be destroyed and not transmitted to the input terminal. . Therefore, the input signal does not determine the abnormality of the output terminal of the isolator according to the intensity of the reflected power reflected from the output terminal, but only protects the input terminal. Therefore, do. There is a problem that the system must solve this problem because it does not include a function of evaluating the intensity of the reflected power in the isolator.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method of manufacturing a ferrite resonator having a lower pole piece, a lower permanent magnet, a lower pole piece, a first ferrite resonator and a center conductor, An upper permanent magnet, an upper pole piece, a nonmagnetic power detector, an upper pole piece, and the like are disposed in an arbitrary shape, and a disk-shaped cover is fixed to the isolator housing. Therefore, in order not to increase the isolator cross- And it is an object of the present invention to provide an isolator including a power detection function by a built-in inserted power detector.

According to an aspect of the present invention, there is provided an antenna device comprising: a center conductor as a propagation medium of a conductive material; A first and a second resonator of ferrite material which surrounds the center conductor in a sandwich form and resonates a radio wave flowing through the center conductor; Any type of permanent magnet that supplies magnetic force to the first and second resonators; A disk-shaped pole piece made of a conductive magnetic material which is magnetized by a permanent magnet and transmits a uniform magnetic force to the first and second resonators, a power detector made of a non-magnetic material; The three accommodating portions forming the same radius of curvature and protruding upward from the base at an arbitrary interval to form a circular accommodating space opened to the upper side and an exposed space of the input / An isolator housing having a base and a base; A disk-shaped cover which is pressed inside at a constant pressure; A disc-shaped magnetic force adjusting means made of a magnetic body and a permanent magnet; A pole piece, a first ferrite resonator and a center conductor, a second ferrite resonator, a pole piece at the lower portion of the cover, and a pole piece at a lower portion of the cover. The isolator includes a housing, A power detector disposed on the upper pole piece on the resonator, the permanent magnet being arranged in any shape; And the cover is fixed to the housing by any means while sealing the components in the accommodating space of the isolator housing, thereby finishing the remaining parts firmly.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be described in more detail with reference to the accompanying drawing figures.

4, 5 and 6 are views showing the isolator according to the present invention, and the same parts as those of FIGS. 1 to 3 showing the prior art are denoted by the same reference numerals and the description thereof will be omitted.

4, 5, and 6, the isolator housing 100 according to the present invention is made of a non-magnetic material or a magnetic material, has a resistor mounting portion 110b, and has an arc- The three accommodating portions 120a, 120b and 120c protrude upward from the base 110 at an arbitrary interval to form a circular receiving space H10 which is opened upward, The exposure spaces H20 and H30 and the resistor terminal portion exposure space H40 are formed. The pole pieces 51, 52, 53, 54, and 55 are made of a conductor magnetic material and have a disk shape. The diameter of the pole pieces 51, 52, 53, 54, and 55 is set to be smaller than that of the accommodating space H10 A power detector 60 made of a nonmagnetic material embedded in the lower portion of the isolator cover and having a voltage output terminal 61 on the right side where power is detected at the output terminal and converted to a voltage and output, The disk-shaped cover 70, the first and second resonators 200 and 400 that press the first and second resonators 200 and 400 at a constant pressure are manufactured in a disk shape as a whole. A first and a second resonators 200 and 400 made of ferrite material that surrounds a center conductor 40 as a propagation medium of a conductor material in a sandwich form and resonates a radio wave flowing through the center conductor 40; Permanent magnets (500, 600) for supplying magnetic force to the first and second resonators (200, 400); Disc-shaped pole pieces 51, 52, 53 magnetized by the permanent magnets 500, 600 to transmit a uniform magnetic force to the first and second resonators 200, 400; Disc-shaped pole pieces (54, 55) of magnetic material which are magnetized by the permanent magnets (500, 600) and transmit uniform magnetic force to the first and second resonators (200, 400); A circular receiving space H10 protruding upward from the base 110 with an arbitrary interval between the three receiving parts 120a, 120b and 120c with the same radius of curvature, An isolator housing 100 in which input / output terminal unit exposure spaces H20 and H30 and a register terminal unit exposure space H40 are formed; The magnetic field environment formed around the center conductor 40 is constantly maintained while compressing and sealing the constituent elements 54,600,51,200,400,55,500,53,54,60,55 in the storage space H10 of the isolator housing 100 A disk-shaped cover 70 made of a magnetic material; And a resistor 8 for converting the reflected wave from the center conductor 40 into heat energy and radiating heat to the outside.

It should be noted that the isolator housing 100 is formed of a magnetic body or a non-magnetic body while the receiving portions 120a, 120b and 120c are integrally formed with or connected to the base 110, A nonmagnetic power detector 60 having a voltage output terminal 61 on the right side of the isolator between the pieces 55 is located at a position where the nonmagnetic power detector 60 is embedded in the lower portion of the isolator cover. The cover 70 is manufactured in a disc shape so that the first resonator 200 and the center conductor 40, the second resonator 400, the pole pieces 51, 52, 53 and the permanent magnets 500 and 600 are arbitrarily arranged and the cover 70 is fixed to the isolator housing 100 by the screws 71 and 100a while covering the upper surface of the components. The diameter of the disk and all the components 54, 600, 51, 200, 400, 52, 500, 53, 54, 60, 55, 70 are made slightly smaller so that these components can be inserted into the storage space H10. The non-magnetic power detector 60 located between the isolator housing 100, the pole pieces 54 and 55 and the cover 70 according to the present invention as shown in FIGS. 4 to 6 has high frequency power reflected from the isolator output terminal Voltage to the voltage output terminal 61 on the right side of the isolator. The detected voltage based on the reflected power is a reference that can be compared with its normal operation when an abnormal operation occurs at the output end of the isolator output, so that the isolator judges whether the isolator has abnormal function in addition to the isolator's unique function of protecting the input side system from reflected power. Which is a means for maintaining the normal operation of the system.

According to the present invention as described above,

The isolator housing is made of a non-magnetic or magnetic material and a power detector made of a non-magnetic material positioned between the pole piece and the pole piece or between the pole piece and the cover to increase the bottom cross-sectional area of the isolator, Voltage can be output to the left and right sides of the isolator. The detected voltage based on the reflected power is a reference that can be compared with its normal operation when an abnormal operation occurs at the output end of the isolator output, so that the isolator judges whether the isolator has abnormal function in addition to the isolator's unique function of protecting the input side system from reflected power. Which is a means for maintaining the normal operation of the system.

It is needless to say that the present invention is not limited to the above-described embodiment, and various modifications may be made without departing from the scope of the following claims.

Claims (1)

The isolator housing is made of a non-magnetic material or a magnetic material and is provided with a pressure inside by a cover fastened with a thread, and the pole piece, the first and second resonators, the center conductor and the permanent magnet disposed in the inner space of the housing, In which power detection is performed by a power detector incorporated between a pole piece and a pole piece or between a pole piece and a cover, A power detector that converts input / output power or reflected power into voltage between the pole piece and the pole piece or between the pole piece and the cover is made of a non-magnetic material so that the cross sectional area of the isolator is not increased and is embedded in the housing to function as an isolator and a power detector And the second insulating layer.

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