WO2006039850A1 - Attenuateur variable - Google Patents

Attenuateur variable Download PDF

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Publication number
WO2006039850A1
WO2006039850A1 PCT/CN2005/000872 CN2005000872W WO2006039850A1 WO 2006039850 A1 WO2006039850 A1 WO 2006039850A1 CN 2005000872 W CN2005000872 W CN 2005000872W WO 2006039850 A1 WO2006039850 A1 WO 2006039850A1
Authority
WO
WIPO (PCT)
Prior art keywords
conductive sheet
diaphragm
resistor
variable attenuator
diaphragm resistor
Prior art date
Application number
PCT/CN2005/000872
Other languages
English (en)
Chinese (zh)
Inventor
Yuejun Yan
Yuepeng Yan
Original Assignee
Yuejun Yan
Yuepeng Yan
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yuejun Yan, Yuepeng Yan filed Critical Yuejun Yan
Priority to JP2007540477A priority Critical patent/JP2008516568A/ja
Priority to EP05755038A priority patent/EP1804329A4/fr
Publication of WO2006039850A1 publication Critical patent/WO2006039850A1/fr
Priority to US11/733,205 priority patent/US8089338B2/en
Priority to US12/703,859 priority patent/US8212648B2/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/22—Attenuating devices
    • H01P1/227—Strip line attenuators

Definitions

  • the present invention relates to a variable attenuator for electronics and communications, and more particularly to a variable attenuator that can be used in a variety of high frequency and microwave circuits and systems. Background technique
  • variable attenuators are one of the basic components commonly used in circuits and systems.
  • the existence of variable attenuators makes circuit fabrication and system debugging more flexible and convenient.
  • Variable attenuators have been widely used in circuits and systems below a few hundred MHz.
  • the existing structure is a three-dimensional variable attenuator made of a contact reed, a slider, a lead screw or the like, which has a large parasitic parameter and a low frequency characteristic. Summary of the invention
  • the technical problem to be solved by the present invention is to provide a variable attenuator that has good broadband characteristics and is suitable for use in high frequency and microwave circuits and systems.
  • the technical solution adopted by the present invention is: Providing a variable attenuator comprising: a substrate 11 further comprising a first diaphragm resistor 1 on the substrate 11 and connected to the first An input end 9 and an output end 10 of the diaphragm resistor 1; the two ends of the first diaphragm resistor 1 are also electrically connected to one end of the third diaphragm resistor 6 and one end of the fourth diaphragm resistor 7; The other ends 14 of the diaphragm resistor 6 and the fourth diaphragm resistor 7 are electrically connected to one end of the second diaphragm resistor 2, and the other end of the second diaphragm resistor 2 is electrically connected to the ground terminal 13;
  • the device further includes a first conductive sheet 3 that can be electrically contacted with the first diaphragm resistor 1 and the second diaphragm resistor 2, respectively, and used to change the impedance of the first diaphragm resistor 1
  • the invention has the beneficial effects that: according to the invention, the printed film resistor is formed on the substrate suitable for the high frequency and micro planar structure, and the contact area of the conductive sheet and the film resistor is changed by the insulator and the conductive sheet. In order to change the impedance of the diaphragm resistor, a variable attenuator function is realized.
  • the invention has the advantages of small volume, convenient adjustment, and is applicable to various miniaturized circuits and communication circuits; c. The invention has simple structure and low production cost;
  • FIG. 1 is a schematic view showing the structure of a variable attenuator of the present invention.
  • Figure 2 is an exploded view of the variable attenuator of the present invention.
  • FIG. 3 is a basic schematic diagram of the variable attenuator of the present invention.
  • Fig. 4 is a theoretical characteristic curve of impedance values of the first diaphragm resistor 1 and the second diaphragm resistor 2 when the insulator drives the conductive sheet to rotate clockwise after the variable attenuator of the present invention is applied.
  • Fig. 5 is a graph showing the variation of the attenuation amount of the variable attenuator when the insulator drives the conductive piece to rotate clockwise after the variable attenuator of the present invention is applied.
  • variable attenuator of the present invention comprises a substrate 11 and an input end 9 on the substrate 11, an arc-shaped first microstrip signal line 5 connected at one end to the input end 9, one end and the first An arc-shaped first diaphragm resistor 1 connected to the other end of the microstrip signal line 5 and an output terminal 10 connected to the other end of the first diaphragm resistor 1 are connected.
  • both ends of the first diaphragm resistor 1 are electrically connected to one end of the third diaphragm resistor 6 and one end of the fourth diaphragm resistor 7, respectively, and the other end 14 and the fourth diaphragm of the third diaphragm resistor 6
  • the other end 14 of the resistor 7 is simultaneously electrically connected to one end of the second diaphragm resistor 2
  • the other end of the second diaphragm resistor 2 is connected to the ground terminal 13, or is connected to the ground terminal 13 through the second microstrip signal line 8. .
  • the first diaphragm resistor 1, the second diaphragm resistor 2, the third diaphragm resistor 6 and the fourth diaphragm resistor 7 referred to above are all printed film resistors, the bottom of which is connected to the substrate 11, and the top is electrically conductive. Resistive material without insulation.
  • the impedance values of the third diaphragm resistor 6 and the fourth diaphragm resistor 7 are preferably the same.
  • the third diaphragm resistor 6 and the fourth diaphragm resistor 7 generally employ a diaphragm resistor having the same impedance value as the input and output impedance Zo. Usually 50 ⁇ .
  • a second conductive sheet 4 is also fixed to the board 12 and the insulator 12.
  • the first conductive sheet 3 and the second conductive sheet 4 are respectively fixed under the insulator 12 (i.e., the force-shifting plate).
  • the first conductive sheet 3 functions to change the impedance value of the first diaphragm resistor 1
  • the second conductive sheet 4 functions to change the impedance value of the second diaphragm resistor 2; the first conductive sheet 3 and the second The conductive sheets 4 are not in contact.
  • the first conductive sheet 3 and the second conductive sheet 4 rotate as the insulator 12 rotates. For example, when the insulator 12 (forced displacement plate) rotates clockwise, the first conductive sheet 3 simultaneously rotates in contact with the first microstrip signal line 5 and the first diaphragm resistor 1.
  • the first conductive sheet 3 is in contact with the first diaphragm resistor 1
  • the product becomes smaller from the small one, so that the impedance value of the first diaphragm resistor 1 becomes larger and smaller; the second conductive sheet 4 simultaneously rotates on the second microstrip signal line 8 and the second diaphragm resistor 2.
  • the contact area of the second conductive sheet 4 and the second diaphragm resistor 2 is greatly reduced, so that the impedance value of the second diaphragm resistor 2 is changed from small to large; by the change of the geometric area, that is, the conductive sheet and the resistive surface of the diaphragm
  • the change in contact can change the effective resistance values of the first diaphragm resistor 1 and the second diaphragm resistor 2, that is, the actual effect resistance values of the first diaphragm resistor 1 and the second diaphragm resistor 2 are changed.
  • the maximum rotation angle should be maintained such that the first conductive sheet 3 completely shorts or nearly completely shorts the first diaphragm resistor 1, the first conductive sheet 3
  • the length should cover or close to cover the first diaphragm resistor 1 and avoid contact with the second diaphragm resistor 2; when the second conductive sheet 4 rotates clockwise, the design is not required
  • a microstrip signal line 5 is in contact with the input terminal 9.
  • the maximum rotation angle of the second conductive sheet 4 should be maintained such that the second conductive sheet 4 does not contact the output end 10; the first conductive sheet 3 is reversed When the hour hand is rotated, it is not designed to be in contact with the ground terminal 13.
  • the first conductive sheet 3 and the second conductive sheet 4 may also be diaphragm resistors, and the two diaphragm resistors overlap and can be electrically contacted, which can be regarded as a parallel connection of two resistors, and can also change the impedance value of the diaphragm resistor. The effect is the same.
  • the first conductive sheet 3 is required to be in electrical contact with the first diaphragm resistor 1 for changing the impedance value of the first diaphragm resistor 1, and is not directly in contact with other microstrip signal lines or other diaphragm resistors;
  • the second conductive sheet 4 is required to be in electrical contact with the second diaphragm resistor 2 for changing the impedance value of the second diaphragm resistor 2, and is not directly in contact with other microstrip signal lines or other diaphragm resistors.
  • the first diaphragm resistor 1 and the second diaphragm resistor 2 can be formed on the level of the substrate 11 different from the other microstrip signal lines, the input and output terminals, and other diaphragm resistors.
  • the goal is to maintain the basic principle structure of the variable attenuator.
  • FIG. 3 is a basic schematic diagram of the variable attenuator of the present invention. Its principle of operation is equivalent to a continuously variable bridge T-type attenuator. It is a symmetrical broadband network with interchangeable inputs and outputs.
  • Figure 4 shows the ideal theoretical variation of the first diaphragm resistance 1 and the second diaphragm resistance 2 when the insulator 12 (i.e., the force displacement plate) is rotated clockwise.
  • the variation of the magnitude of the impedance of the first diaphragm resistor 1 and the second diaphragm resistor 2 is opposite.
  • Figure 5 shows the attenuation curve of the variable attenuator produced by the above-mentioned Fig. 4 variation curve when the insulator 12 (i.e., the force displacement plate) is rotated clockwise.
  • the first diaphragm resistance 1 and the second diaphragm resistance 2 are selected according to the variation curve of Fig. 4, and the amount of change in the amount of attenuation required for the displacement of the variable attenuator can be realized.
  • variable attenuator can be made in a variety of package types, such as surface mount type, lead type or plug type structure.
  • the present invention can add a silicone rubber film which can conduct electricity in the vertical direction between the substrate 11 and the insulator 12, and achieve stable contact between the film resistance and the conductive sheet, and prevent wear between the film resistance and the conductive sheet. effect.
  • the present invention can also process the trenches on the insulator 12, the first conductive sheet 3 and the second conductive sheet 4 are located in the trenches, and the first conductive sheets 3 and the second which are in contact with the short circuit in the trenches.
  • An elastic substance is added between the conductive sheets 4, and the substance has little influence on the high-frequency microwave characteristics, and the film resistance is stably contacted with the conductive sheets, and the wear between the film resistance and the conductive sheets is prevented.
  • the greatest feature of the present invention is that in one plane (which may be a plurality of layers), the impedance value of the first diaphragm resistor 1 and the second diaphragm resistor 2 is skillfully passed through the short circuit of the conductive sheet (ie, the resistance)
  • the value of the first conductive sheet 3, the second conductive sheet 4, the first diaphragm resistor 1 and the second diaphragm resistor 2 may be a circular arc shape, a rectangular shape or other geometric shapes. It realizes miniaturization of variable attenuators, low cost, and can be used in very high microwave frequency bands.

Landscapes

  • Non-Reversible Transmitting Devices (AREA)
  • Attenuators (AREA)

Abstract

La présente invention se rapporte à un atténuateur variable. L'atténuateur comprend : un substrat sur lequel est située une première résistance à couche, les deux extrémités de la première résistance à couche étant respectivement reliées électriquement à un port d'entrée et à un port de sortie, les deux extrémités de la première résistance à couche sont également respectivement reliées électriquement à une extrémité d'une troisième résistance à couche et à une extrémité d'une quatrième résistance à couche, l'autre extrémité de la troisième résistance à couche et l'autre extrémité de la quatrième résistance à couche sont reliées électriquement à la même extrémité d'une seconde résistance à couche, et l'autre extrémité de la seconde résistance à couche est reliée à la masse ; un premier film conducteur et un second film conducteur qui sont respectivement reliés électriquement à la première résistance à couche et à la seconde résistance à couche afin de modifier respectivement la valeur ohmique de la première résistance à couche et la valeur ohmique de la seconde résistance à couche, enfin un isolant sur lequel sont fixés le premier film conducteur et le second film conducteur. La présente invention peut s'adapter pour s'appliquer dans des circuits et des systèmes en haute fréquence et en hyperfréquences, et elle présente tous les avantages dans une large bande, elle est de faible taille, se fabrique aisément et présente un faible coût.
PCT/CN2005/000872 2004-10-13 2005-06-17 Attenuateur variable WO2006039850A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2007540477A JP2008516568A (ja) 2004-10-13 2005-06-17 可変減衰器
EP05755038A EP1804329A4 (fr) 2004-10-13 2005-06-17 Attenuateur variable
US11/733,205 US8089338B2 (en) 2004-10-13 2007-04-10 Variable attenuator
US12/703,859 US8212648B2 (en) 2004-10-13 2010-02-11 Variable attenuator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200410051879.9 2004-10-13
CN 200410051879 CN1282303C (zh) 2004-10-13 2004-10-13 可变衰减器

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US11/733,205 Continuation US8089338B2 (en) 2004-10-13 2007-04-10 Variable attenuator
US11/733,205 Continuation-In-Part US8089338B2 (en) 2004-10-13 2007-04-10 Variable attenuator

Publications (1)

Publication Number Publication Date
WO2006039850A1 true WO2006039850A1 (fr) 2006-04-20

Family

ID=35046702

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2005/000872 WO2006039850A1 (fr) 2004-10-13 2005-06-17 Attenuateur variable

Country Status (4)

Country Link
EP (1) EP1804329A4 (fr)
JP (1) JP2008516568A (fr)
CN (1) CN1282303C (fr)
WO (1) WO2006039850A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2190116B1 (fr) * 2007-08-11 2018-03-21 Yantel Corporation Atténuateur variable
CN101546989B (zh) * 2008-03-26 2014-09-17 深圳市研通高频技术有限公司 可变衰减器
DE102009017689A1 (de) * 2009-04-16 2010-10-21 Asc-Tec Ag Antennen-Satelliten-Communication-Technik Pegelsteller
US20110193624A1 (en) * 2010-02-08 2011-08-11 Harris Corporation Tunable impedance inverter for doherty amplifier circuit
JP5110333B2 (ja) * 2010-06-21 2012-12-26 Ｔｄｋ株式会社 減衰器
CN109703998B (zh) * 2018-12-25 2020-07-31 湖州通元石料有限公司 一种移动式石料输送下料装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2810891A (en) * 1954-03-03 1957-10-22 Itt Attenuators
US2961620A (en) 1955-10-06 1960-11-22 Sanders Associates Inc Phase shifter for high frequency transmission line
US3659233A (en) * 1970-07-07 1972-04-25 Collins Radio Co Microstrip rf variable attenuator
JPH02297902A (ja) * 1989-05-11 1990-12-10 Copal Electron Co Ltd 可変抵抗器の抵抗体
JP2000196302A (ja) * 1998-12-25 2000-07-14 Sumitomo Electric Ind Ltd 分配可変移相器
CN1338790A (zh) * 2000-08-12 2002-03-06 Kmw株式会社 用于改变n个输入信号的相位的信号处理装置
US6522221B1 (en) * 1999-01-04 2003-02-18 Nippon Telegraph And Telephone Corporation Phase shifter, attenuator, and nonlinear signal generator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10242711A (ja) * 1997-02-25 1998-09-11 Miharu Tsushin Kk 筒型可変減衰器
KR20000075389A (ko) * 1999-05-19 2000-12-15 김덕용 입력된 신호의 위상천이 및 감쇄를 위한 신호 처리장치
GB0305619D0 (en) * 2003-03-12 2003-04-16 Qinetiq Ltd Phase shifter device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2810891A (en) * 1954-03-03 1957-10-22 Itt Attenuators
US2961620A (en) 1955-10-06 1960-11-22 Sanders Associates Inc Phase shifter for high frequency transmission line
US3659233A (en) * 1970-07-07 1972-04-25 Collins Radio Co Microstrip rf variable attenuator
JPH02297902A (ja) * 1989-05-11 1990-12-10 Copal Electron Co Ltd 可変抵抗器の抵抗体
JP2000196302A (ja) * 1998-12-25 2000-07-14 Sumitomo Electric Ind Ltd 分配可変移相器
US6522221B1 (en) * 1999-01-04 2003-02-18 Nippon Telegraph And Telephone Corporation Phase shifter, attenuator, and nonlinear signal generator
CN1338790A (zh) * 2000-08-12 2002-03-06 Kmw株式会社 用于改变n个输入信号的相位的信号处理装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1804329A4 *

Also Published As

Publication number Publication date
EP1804329A1 (fr) 2007-07-04
JP2008516568A (ja) 2008-05-15
CN1282303C (zh) 2006-10-25
CN1674351A (zh) 2005-09-28
EP1804329A4 (fr) 2007-10-10

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