KR101596408B1 - High-gain amplifier apparatus - Google Patents

High-gain amplifier apparatus Download PDF

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Publication number
KR101596408B1
KR101596408B1 KR1020140158076A KR20140158076A KR101596408B1 KR 101596408 B1 KR101596408 B1 KR 101596408B1 KR 1020140158076 A KR1020140158076 A KR 1020140158076A KR 20140158076 A KR20140158076 A KR 20140158076A KR 101596408 B1 KR101596408 B1 KR 101596408B1
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KR
South Korea
Prior art keywords
amplifier
waveguide
high gain
groove
seating
Prior art date
Application number
KR1020140158076A
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Korean (ko)
Inventor
이영철
Original Assignee
목포해양대학교 산학협력단
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Priority to KR1020140158076A priority Critical patent/KR101596408B1/en
Application granted granted Critical
Publication of KR101596408B1 publication Critical patent/KR101596408B1/en

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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/02—Manually-operated control
    • H03G3/04—Manually-operated control in untuned amplifiers
    • H03G3/06—Manually-operated control in untuned amplifiers having discharge tubes

Abstract

The present invention relates to a high gain amplifying device which can integrate a waveguide between portions where an amplifier in a metal case is seated to cover a cover of a metal case to completely isolate each amplifier to fundamentally suppress feedback. To this end, a high gain amplifying apparatus according to an embodiment of the present invention is a high gain amplifying apparatus having at least two amplifiers coupled to each other. The high gain amplifying apparatus includes a plurality of mounting portions on which the amplifiers are mounted, And a central waveguide for inputting an output signal of the amplifier mounted on the second mounting part to an amplifier mounted on the next mounting part and for blocking feedback of the signal of the amplifier mounted on the next mounting part.

Description

[0001] HIGH-GAIN AMPLIFIER APPARATUS [0002]

The present invention relates to a high gain amplifying device which can integrate a waveguide between portions where an amplifier in a metal case is seated to cover a cover of a metal case to completely isolate each amplifier to fundamentally suppress feedback.

Generally, high gain amplifiers are essential in millimeter wave wireless communication systems. In particular, implementation of a high gain amplifier of 20 dB or more is essential.

High gain amplifiers over 20dB are used by connecting two or more low-gain amplifiers or amplifier chips packaged on a PCB substrate by wire bonding or soldering. At this time, an attenuator is used between the amplification stages in order to adjust the gain to 30 dB or less, or to act as an impedance buffer between the input / output terminals of the amplifier to replace the matching effect.

The PCB substrate on which the amplifiers are mounted is assembled into a metal case to produce a high gain module. However, in the case of a module with a gain larger than 30 dB, a radiation signal due to discontinuity occurring at the input-output stage when the amplifier is mounted and assembled is reflected to the structure or metal case around the amplifier, The input signal is amplified, and the oscillation is generated by a feed back effect, which is then radiated and reflected. Due to such a problem, it is difficult to realize a high gain amplifier module of 30 dB or more. Also, since an attenuator is used, there is a problem that a single amplifier or a chip has to lose a certain amount of gain at the time of manufacture. In reality, when a high-gain stage of 30 dB or more is required, a single amplifier module may be connected in multiple stages using expensive waveguides or cables. Therefore, the manufacturing cost increases and the volume of the entire system becomes larger and more complicated.

Korean Patent Publication No. 10-2011-0061567 (June 10, 2011)

The present invention is to provide a high gain amplifying device which can integrate a waveguide between portions where an amplifier in a metal case is seated and cover a cover of a metal case to completely isolate the amplifiers, thereby suppressing a feedback phenomenon.

The present invention also provides a gain amplifying device which is capable of adjusting the overall gain of a high gain amplifying device by including a waveguide in a cover portion of a metal case and a gain adjusting means capable of adjusting the height of the waveguide.

According to an exemplary embodiment of the present invention, there is provided a high-gain amplifying device having at least two amplifiers coupled, comprising: a plurality of mounting portions on which the respective amplifiers are mounted; and a plurality of mounting portions formed between the plurality of mounting portions, And a central waveguide for inputting an output signal of the amplifier to an amplifier mounted on a next seating part and for preventing feedback of a signal of the amplifier mounted on the next seating part.

The high gain amplifying device according to an embodiment of the present invention includes a first waveguide connected to a first seating portion of the plurality of seating portions and a second waveguide connected to a final seating portion of the plurality of seating portions .

In the embodiment of the present invention, the first waveguide includes a first groove for use that is connected to a transmission line corresponding to an input end of the amplifier that is seated on the first seating portion, and the second waveguide is seated on the last seating portion And a second groove for use in connection with a transmission line corresponding to an output end of the amplifier.

In the high gain amplifier according to the embodiment of the present invention, the center waveguide includes a groove for use in transition between a transmission line corresponding to an output end of the amplifier mounted on the previous seating part and the center waveguide, And an output-use groove for transiting between the transmission line corresponding to the input end of the mounted amplifier and the central waveguide.

The high gain amplifying apparatus according to an embodiment of the present invention may further include gain adjusting means disposed at a predetermined position in the central waveguide to change a transmission characteristic of the central waveguide.

In the high gain amplifier according to the embodiment of the present invention, the plurality of seating portions and the center waveguide are formed in a metal case, and the high gain amplifier is connected through a coupling between the metal case and the cover portion having the gain adjusting means .

In the high gain amplifier according to the embodiment of the present invention, the gain adjusting means includes an insertion groove formed in a part of a region corresponding to a position of the center waveguide formed on the front surface of the cover portion, And is connected to the central waveguide through a through groove formed in the central waveguide.

In the high gain amplifying device according to the embodiment of the present invention, the gain adjusting means is a screw which is inserted into the center waveguide through a predetermined depth of the insertion groove and the through groove.

A high gain amplifier according to an embodiment of the present invention is formed using two amplifiers having a gain of 20 dB or more.

According to the embodiments of the present invention, by integrating the waveguide between the portions where the amplifiers are seated in the metal case, covering the cover of the metal case and completely isolating each amplifier, the feedback phenomenon can be originally suppressed. This not only lowers the price of high gain amplifiers but also enables miniaturization.

According to the embodiments of the present invention, the gain of the high gain amplifier can be adjusted by providing a waveguide in the cover of the metal case and a gain adjusting means capable of adjusting the height of the waveguide.

1 is a diagram illustrating a detailed structure of a high gain amplifier according to an embodiment of the present invention;
FIG. 2 is a perspective view illustrating a structure of a metal case in which a high gain amplifying device according to an embodiment of the present invention is formed; FIG.
3 is a plan view showing a structure of a central waveguide in a metal case according to an embodiment of the present invention;
FIGS. 4A and 4B are perspective views illustrating a front surface and a rear surface of a cover unit coupled to a metal case according to an embodiment of the present invention;
5 is a graph showing a gain measurement result of the high gain amplifier according to the embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. The following detailed description is provided to provide a comprehensive understanding of the methods, apparatus, and / or systems described herein. However, this is merely an example and the present invention is not limited thereto.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intention or custom of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification. The terms used in the detailed description are intended only to describe embodiments of the invention and should in no way be limiting.

FIG. 1 is a diagram illustrating a detailed structure of a high gain amplifying apparatus 100 according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of a metal case 105 3 is a plan view showing a structure of a central waveguide 140 in a metal case 105 according to an embodiment of the present invention.

1 to 3, the metal case 105 in which the high gain amplifying device 100 is embodied is formed by first and second amplifiers 102 and 104, in which the first and second amplifiers 102 and 104 can be inserted and seated, A first waveguide 130 connected to an input end of a first amplifier 102 mounted on the first seating part 110 and a second waveguide 130 connected to a second amplifier And a central waveguide 140 formed between the first and second seating portions 110 and 120. The second waveguide 150 is connected to the output end of the first and second seating portions 110 and 120,

The first and second seating portions 110 and 120 can be seated by inserting first and second amplifiers 102 and 104, for example, amplifiers having an efficiency of 20 dB or more.

In the embodiment of the present invention, the central waveguide 140 may be connected to the input and output ends of the respective amplifiers inserted into and seated in the first and second seating portions 110 and 120. The central waveguide 140 is connected to the output of the first amplifier 102 inserted and seated in the first seating part 110 and connected to the output of the second amplifier 104 ). ≪ / RTI >

The first waveguide 130 may include a first use groove 132 connected to an input end of the first amplifier 102 mounted on the first seating part 110. Specifically, the first waveguide 130 may transition to a transmission line (input line) of the first amplifier 102 through the first use groove 132.

The second waveguide 150 may have a second groove for use 152 connected to an output end of the second amplifier 104 mounted on the second seating part 120. Specifically, the second waveguide 150 may be transited to the transmission line (output line) of the second amplifier 104 through the second use groove 152.

The central waveguide 140 includes an input sink using groove 142 connected to an output line which is a transmission line of the first amplifier 102 and an output sink utilizing groove 144 connected to an input line which is a transmission line of the second amplifier 104 . Herein, the input gear utilizing groove 142 can shift the transmission line of the first amplifier 102 and the central waveguide 140, and the output gear utilizing groove 144 can shift the transmission line of the second amplifier 104 and the center waveguide 140. [ (140).

The central waveguide 140 having the above-described structure receives a signal output through the input-use groove 142 and outputs the signal to the second amplifier 104 through the output-use groove 144 . Specifically, the central waveguide 140 completely isolates the first amplifier 102 and the second amplifier 104 that are seated on the first and second seating portions 110 and 120, The signal fed back from the first amplifier 104 can be originally cut off from being input to the first amplifier 102.

The first amplifier 102 is mounted on the first mounting portion 110 of the metal case 105 having the above structure and the second amplifier 104 is mounted on the second mounting portion 120, The high gain amplifier 100 can be completed by mounting the cover portion (400 in Fig.

The structure of the cover part 400 mounted on the metal case 105 as described above will be described with reference to Figs. 4A and 4B.

4A and 4B are perspective views illustrating a front surface and a rear surface of the cover unit 400 coupled to the metal case 105 according to the embodiment of the present invention.

4A and 4B, on the front surface of the cover part 400, an insertion groove 410 into which a gain adjusting unit 420 for adjusting the characteristics of the central waveguide 140 can be inserted is formed And a passage groove 430 through which the gain adjusting means 420 inserted into the insertion groove 410 can pass is formed in the rear surface of the cover portion 400.

The insertion groove 410 and the passage groove 430 are formed in a portion corresponding to the position of the central waveguide 140. The gain adjusting means 420 is inserted into the insertion groove 410 and passes through the passage groove 430 And is placed at a predetermined position of the central waveguide 140. Accordingly, since the internal structure of the central waveguide 140 is changed, the transmission characteristics can be changed accordingly. In other words, the internal impedance of the central waveguide 140 is changed in accordance with the internal position of the gain adjusting means 420 in the central waveguide 140, and the output of the first amplifier 102 through the output terminal of the first amplifier 102 The characteristics of the signal to be input to the second amplifier 104 may be changed and input to the input terminal of the second amplifier 104.

The gain adjusting means 420 is connected to the central waveguide 140 through the insertion groove 410 and the passing groove 430. The gain adjusting means 420 may be a screw, but is not limited thereto.

The transmission of the central waveguide 140 according to the depth at which the gain adjusting means 420 is inserted into the central waveguide 140 through the passage groove 430, the position at which it is inserted, and the size (e.g., diameter) The characteristics can be changed.

The gain measurement result when the high gain amplifier device 100 is implemented by inserting the first and second amplifiers 102 and 104 using the metal case 105 and the cover part 400 having the above- As shown in FIG. 5, the 20 dB gain of each of the first and second amplifiers 102 and 104 is combined without loss and exhibits a gain of more than 40 dB.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, . Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by equivalents to the appended claims, as well as the appended claims.

100: High gain amplifying device
102, 104: first and second amplifiers
105: metal case
110, 120: first and second seat portions
130. 150: First and second waveguides
132, 152: first and second use grooves
140: central waveguide
142: home using input cloth
144: Home using the output cloth
400:
410: insertion groove
420: gain adjustment means
430: passing home

Claims (9)

A high gain amplifying device having at least two amplifiers coupled,
A plurality of mounting portions on which the amplifiers are respectively mounted,
An output signal of an amplifier formed between the plurality of seating portions and seated in the previous seating portion is input to an amplifier seated in the next seating portion and a central waveguide for blocking feedback of the signal of the amplifier placed in the next seating portion Wherein the high gain amplifying device comprises:
The method according to claim 1,
The high gain amplifying device includes:
A first waveguide connected to the first seating part of the plurality of seating parts,
And a second waveguide connected to the final seating portion of the plurality of seating portions.
3. The method of claim 2,
Wherein the first waveguide includes a first groove for use in connection with a transmission line corresponding to an input end of the amplifier that is seated in the first seating portion,
Wherein the second waveguide includes a second groove for use that is connected to a transmission line corresponding to an output end of the amplifier that is seated in the final seating portion.
The method according to claim 1,
The central waveguide includes:
A groove for use in the transition between the transmission line corresponding to the output end of the amplifier mounted on the previous seating part and the central waveguide,
And an output-use groove for transiting between the transmission line corresponding to an input end of the amplifier mounted on the next seating part and the center waveguide.
The method according to claim 1,
The high gain amplifying device includes:
And a gain adjusting unit disposed at a predetermined position inside the center waveguide to change transmission characteristics of the center waveguide.
6. The method of claim 5,
The plurality of seating portions and the central waveguide are formed in a metal case,
Wherein the high gain amplifier is formed by coupling between the metal case and a cover portion having the gain adjusting means.
The method according to claim 6,
The gain adjusting means is connected to the central waveguide through an insertion groove formed in a part of a region corresponding to a position of the central waveguide and a passing groove formed in a rear surface of the cover portion corresponding to the insertion groove, And a high gain amplifier.
8. The method of claim 7,
Wherein the gain adjusting means is a screw which is inserted through the insertion groove and the through groove to a predetermined depth of the central waveguide.
The method according to claim 1,
Wherein the high gain amplifier is formed using two amplifiers having a gain of 20 dB or more.
KR1020140158076A 2014-11-13 2014-11-13 High-gain amplifier apparatus KR101596408B1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05206710A (en) * 1992-01-27 1993-08-13 Mitsubishi Electric Corp Microwave circuit device
JPH06164265A (en) * 1992-11-16 1994-06-10 Toshiba Corp Microwave amplifier
JPH10107519A (en) * 1996-09-30 1998-04-24 Toshiba Corp High frequency module
JP2011514110A (en) * 2008-03-11 2011-04-28 テールズ Multi-source spatial output amplifier
KR20110061567A (en) 2008-09-25 2011-06-09 소니 주식회사 Millimetre wave transmission device, millimetre wave transmission method, and millimetre wave transmission system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05206710A (en) * 1992-01-27 1993-08-13 Mitsubishi Electric Corp Microwave circuit device
JPH06164265A (en) * 1992-11-16 1994-06-10 Toshiba Corp Microwave amplifier
JPH10107519A (en) * 1996-09-30 1998-04-24 Toshiba Corp High frequency module
JP2011514110A (en) * 2008-03-11 2011-04-28 テールズ Multi-source spatial output amplifier
KR20110061567A (en) 2008-09-25 2011-06-09 소니 주식회사 Millimetre wave transmission device, millimetre wave transmission method, and millimetre wave transmission system

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