KR20150126110A - Isolator - Google Patents

Abstract

The present invention relates to an isolator, a non-reciprocal circuit, which is manufactured by a conductor, and which includes a circulation resonator, an isolator housing which can be inserted with a reverse power detector, disk-shaped lower pole pieces, a disk-shaped cover, disk-shaped upper pole pieces, the reverse power detector made of a magnetic material, a first and a second ferrite resonator, and a lower and an upper permanent magnet, manufactured in an arbitrary form. In a storage space of the isolator housing, the lower pole pieces, the lower permanent magnet, the lower pole pieces, the first ferrite resonator, a center conductor, the second ferrite resonator, the upper pole pieces, the upper permanent magnet, the upper pole pieces, the reverse power detector and the upper pole pieces are disposed in an arbitrary form. The disk-shaped cover is fixed to the isolator housing to securely fasten inner components, in the end the isolator performs an operation of magnetic force uniformization by the reverse power detector and an operation of a reverse power detection at the same time.

Description

{ISOLATOR} An isolator incorporating a power detector on the upper part of a Faraday resonator.

The present invention relates to an isolator, and more particularly, to an isolator in which a magnetic field reverse power detection unit is inserted into an isolator composed of an isolator housing and an isolator cover to incorporate magnetic force distribution control and reverse power detection functions in the same cross sectional area. An inverted power detector for detecting the intensity of the reflected power returned from the isolator output terminal is incorporated to perform the isolator function improvement by adjusting the magnetic force distribution and simultaneously perform the reverse power detection function. The present invention relates to an isolator in which a reverse power detection unit made of a magnetic body is incorporated without increasing the cross-sectional area of the isolator so that its function is improved.

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 ferrite material that surrounds the center conductor in a sandwich form and resonates a radio wave flowing through the center conductor; A permanent magnet for supplying a 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 whose 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 realized.

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

1, 2, and 3, the isolator housing 100 includes three accommodating portions made of a non-magnetic material or a magnetic material and having an arc mounting portion 110b and arc-shaped bending outwardly with the same radius of curvature 120a, 120b, and 120c protrude upward from the base 110 to form a circular storage space H10 opened upward and input / output terminal unit exposure spaces H20 and H30 opened laterally, And a resistor terminal portion exposure space H40 are formed. The pole pieces 51, 52, 53, and 54 and the curve 70 are made of a conductor magnetic material and have a disk shape. The diameter of the pole pieces 51, 52, 53, H10. On the other hand, the first and second resonators 12 and 14 are formed in the shape of a substantially triangular plate as a whole. The permanent magnets 161,162 and 163 are made of three separate materials so that the permanent magnets 161,162 and 163 can be sandwiched between the respective side portions of the first and second resonators 12 and 14 and the inner peripheral surface of the storage space H10. , The inner surface is formed in a straight shape, and the outer surface is formed in an arc shape. On the other hand, the center conductor 40 is formed in a substantially Y-shaped plate shape, and each of its ends is an input terminal portion 41, an output terminal portion 42, and a resistor terminal portion 43.

First, the pole pieces 51, 53 and 54 are placed on a flat surface, and the first resonator 12 is placed on the pole piece 51 so as to be centered. Then, The input and output terminal portions 41 and 42 and the resistor terminal exposure space H40 are positioned at the corner of the first resonator 12 and exposed to the corresponding exposure spaces H20, H30 and H40 of the isolator housing 100 The second resonator 14 is laminated on the first resonator 14 so as to correspond to the first resonator 12 and the other pole piece 52 and the cover 70 are sequentially laminated on the second resonator 14, The permanent magnets 161, 162, and 163 are fixed between the side portions of the first and second resonators 12 and 14 and the inner peripheral surfaces of the pole pieces 51 and 52. Then, (161, 162, 163). At this time, the thickness of the permanent magnets 161, 162, and 163 is set to be slightly smaller than the total thickness of the first and second resonators 12 and 14 and the center conductor 40. The assembled insert is inserted into the register 8 so that the input / output terminal portions 41 and 42 of the center conductor 40 and the resistor terminal exposure space H40 are exposed to the corresponding exposure spaces H20, H30 and H40 of the isolator housing 100, The front ends of the accommodating portions 120a, 120b and 120c protruded above the cover 70 are pressed by a press after the cover 70 is inserted into the housing 100 bonded to the register accommodating portion 110a, And is firmly fixed while being pressed at a predetermined pressure by the tips of the curved receiving parts 120a, 120b, and 120c. Thereafter, the register connection unit 43 and the register 8 are electrically connected (see FIG. 2).

According to the present embodiment, since the permanent magnets 161, 162, and 163 are disposed in the lateral direction while being in contact with the side portions of the first and second resonators 12 and 14 having a triangular plate shape, the advantage that the entire thickness of the isolator becomes thin .

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, according to the strength of the backward reflected power, which is reflected from the output terminal of the input signal, it can not judge the abnormality of the output of the isolator, but only protects the input terminal. . There is a problem that the system needs to solve this problem because it does not include a function of evaluating the intensity of the backward reflected power amount in the isolator. Also, since the magnetic force uniformity due to the use of the disk-shaped pole piece causes the magnetic force concentration at the central portion due to the mutual relationship with the magnetic body housing, there arises a problem that the real magnetic force applied to the ferrite resonator becomes uneven, Due to the difference in strength, defective products frequently occur, resulting in mass productivity and a significant decrease in productivity, resulting in an increase in unit price.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems, and an object of the present invention is 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, The upper pole piece, the reverse power detection part made of a magnetic material, the upper pole piece, etc. are arranged in any form, and the disk-shaped cover is fixed to the isolator housing, so that the inner parts are finely fixed An object of the present invention is to provide an isolator capable of simultaneously performing a reverse power detection function and magnetic force uniformization by the inserted magnetic substance reverse power detection unit.

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 that surrounds the center conductor in a sandwich form and resonates a radio wave flowing through the center conductor; A permanent magnet of any type for supplying a magnetic force to the first and second resonators; A disc-shaped pole piece and a magnetic substance reverse power detector which are magnetized by a permanent magnet and transmit a uniform magnetic force to the first and second resonators; The three accommodating portions protrude upward from the base at an arbitrary interval so as to form the same curvature radius so as to form a circular accommodating space opened to the upper side, an input / output terminal portion exposed space opened laterally, and a resistor terminal portion exposed space An isolator housing having a base; A disk-shaped cover which is pressed inside at a constant pressure; A pole piece, a first ferrite resonator and a center conductor, a second ferrite resonator, a pole piece, and a permanent magnet are disposed in a housing space of the isolator housing. The isolator is composed of a resistor that converts return electromagnetic waves from the center conductor into heat energy and dissipates heat to the outside. A reverse power detection part of the magnetic body arranged in any form and located on the upper pole piece on the resonator; 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.

According to the present invention as described above,

The reverse power detector converts the high frequency power reflected from the isolator output terminal to a DC voltage and sends it to the voltage output terminal in any direction of the isolator. The voltage detected based on the reverse 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 the unique function of protecting the input side side system from the reflected power, Which is a means for maintaining the normal operation of the system. Particularly, the isolator housing is made of a non-magnetic material or a magnetic material, and magnetic force of the central portion can be additionally provided depending on whether the magnetic medium of the reflection power detecting portion located between the pole piece and the cover is included. The magnetic force strengthening effect and the edge strengthening effect of the magnetic force provided by the pole piece can be inferior and the magnetic force at the center portion of the first resonator and the second resonator can be more effectively equalized and irreversible transmission function can be improved.

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.

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, ooo o110; Base,
110a; Register seating groove, o o 110b; Housing fastening groove,
120a, 120b, 120c; Storage exterior protrusion, ooo 12; The first resonator,
40; Center conductor, ooo 41; Input terminal portion, oooo 42, output terminal portion,
43; A resistor terminal portion, ooo 14; A second resonator, ooo 161, 162, 163; Permanent magnets,
Oo 70, a disk-shaped cover, oo 60, a reverse power detection unit, oo 61, a reverse power conversion voltage output terminal, oo 8, Register, oo H10; Storage space, oo H20; Input terminal exposed space, oo H30; Output terminal exposed space, oo H40; Exposure space of register terminal.

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- A circular accommodating space H10 protruded upward from the base 110 with an arbitrary interval therebetween and having an upper opening and an input / output terminal portion exposure space (H20, H30) and a 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 reverse power detecting unit 60 made of a magnetic material having a voltage output terminal 61 in an arbitrary direction, the reverse power detecting unit 60 detecting reverse power at an output terminal and converting it to a DC voltage and outputting the output, The disk-shaped cover 70 and the first and second resonators 12 and 14, which are pressed with a pressure, are formed in a hexagonal shape as a whole. First and second resonators 12 and 14 made of ferrite material that surrounds a center conductor 40, which is a propagation medium of a conductive material, in the form of a sandwich, and resonates a radio wave flowing through the center conductor 40; Permanent magnets (161, 162, 163) arranged on sides to supply magnetic force to the first and second resonators (12, 14); Disc-shaped pole pieces 51, 52, 53, 54, 55 magnetized by the permanent magnets 161, 162, 163 to transmit uniform magnetic force to the first and second resonators 12, 14; 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 having input / output terminal portion exposed spaces H20 and H30 and a register terminal portion exposed space H40 formed therein; (55,54,51,12,40,14,161,162,163,52,60,61,53) in the storage space (H10) of the isolator housing (100) are formed around the center conductor (40) A disc-shaped cover 70 made of a magnetic material and maintaining a magnetic field environment constant; And a resistor (8) for converting the return electric 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 reverse power detecting portion 60 of a magnetic body having a voltage output terminal 61 in an arbitrary direction of the isolator is located between the pieces 53. [ The cover 70 is formed in a disk shape so that the first resonator 12 and the center conductor 40, the second resonator 14, the pole pieces 51, 52, 120b and 120c of the isolator housing 100 are arranged such that the cover 70 is fixed while compressing the upper surface of the components and the permanent magnets 161,162,163 and the permanent magnets 161,162,163, And is bent and fixed onto the cover 70. The diameter of the disk and all the components are made slightly smaller so that these components can be inserted into the storage space H10.

According to the present invention shown in FIG. 4 to FIG. 6, the reverse power detector 60 of a magnetic or non-magnetic body converts the high frequency power reflected from the isolator output terminal to a voltage and sends it to the voltage output terminal 61 in an arbitrary direction of the isolator give. The voltage detected based on the reverse 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 the unique function of protecting the input side side system from the reflected power, Which is a means for maintaining the normal operation of the system. In particular, since magnetic force reinforcement of the central portion can be additionally performed depending on whether the magnetic medium of the reflected power detecting portion 60 located between the isolator housing 100, the pole pieces 52, 53 and the cover 70 is included, It is possible to enhance the edge magnetic force by the edge effect and to strengthen the edge strengthening effect of the magnetic force provided by the pole piece and to more effectively equalize the magnetic force of the center portion of the first resonator and the second resonator, Can be improved.

It is used in a system that requires matching and protection between the amplified signal and the antenna in relation to the signal amplification issued in the transmission and reception process of the mobile communication system.

Not applicable

Claims (1)

A center conductor which is a propagation medium of a conductor material; A first and a second resonator of ferrite material that surrounds the center conductor in a sandwich form and resonates a radio wave flowing through the center conductor; A laterally disposed permanent magnet for supplying a magnetic force to the first and second resonators; A pole piece magnetized by the permanent magnet to transmit a uniform magnetic force to the first and second resonators; The three housing units having the same radius of curvature are protruded upward from the base at an arbitrary interval to form a circular accommodating space opened to the upper side, an input / output terminal unit exposed space opened laterally, and an exposed space of the resistor terminal unit, ; A cover made of a magnetic material material which keeps a magnetic field environment formed around the center conductor while sealing components contained in the accommodating space of the isolator housing; 1. An isolator comprising a resistor for converting a return electric wave from a center conductor into heat energy and radiating heat to the outside,
The isolator housing is made of a non-magnetic material or a magnetic material, and the pole piece for magnetic force uniformization is made in a disk shape, and includes a magnetic body for converting the reverse power to DC voltage between the pole piece or the cover, An inverse reflected power detection unit in which a voltage output terminal is located in an arbitrary direction; a center conductor that is a propagation medium of a conductive material; A first and a second resonator of ferrite material that surrounds the center conductor in a sandwich form and resonates a radio wave flowing through the center conductor; Permanent magnets arranged on three sides to supply magnetic force to the first and second resonators; A pole piece magnetized by the permanent magnet to transmit a uniform magnetic force to the first and second resonators; A circular accommodating space protruding upward from the base with an arbitrary interval between the three accommodating sections with the same radius of curvature, a circular accommodating space opened to the upper side, an input / output terminal section exposed space opened laterally and a register terminal terminal exposure space, 70); A cover made of a magnetic material material which keeps a magnetic field environment formed around the center conductor while sealing components contained in the accommodating space of the isolator housing; A resistor for converting a return electric wave from the center conductor into thermal energy and radiating heat to the outside; Characterized in that a magnetic force-homogenizing magnetic substance reverse power detector is incorporated in the isolator-specific function.

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