JPH0438105U - - Google Patents

Info

Publication number
JPH0438105U
JPH0438105U JP8088190U JP8088190U JPH0438105U JP H0438105 U JPH0438105 U JP H0438105U JP 8088190 U JP8088190 U JP 8088190U JP 8088190 U JP8088190 U JP 8088190U JP H0438105 U JPH0438105 U JP H0438105U
Authority
JP
Japan
Prior art keywords
directional coupler
drains
field effect
sources
effect transistors
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP8088190U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP8088190U priority Critical patent/JPH0438105U/ja
Publication of JPH0438105U publication Critical patent/JPH0438105U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Non-Reversible Transmitting Devices (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案の一実施例による可変減衰器
を示す構成図、第２図は、従来の可変減衰器を示
す構成図である。 １は３ｄＢ方向性結合器、２ａ，２ｂ，２ｃ，
２ｄは入出力端子、３ａ，３ｂ，３ｃ，３ｄは電
界効果トランジスタ、４はドレイン端子、５はソ
ース端子、６はゲート端子、７ａ，７ｂ，７ｃ，
７ｄは抵抗、８はグランドである。なお、図中、
同一符号は同一、又は相当部分を示す。 FIG. 1 is a block diagram showing a variable attenuator according to an embodiment of this invention, and FIG. 2 is a block diagram showing a conventional variable attenuator. 1 is a 3dB directional coupler, 2a, 2b, 2c,
2d is an input/output terminal, 3a, 3b, 3c, 3d are field effect transistors, 4 is a drain terminal, 5 is a source terminal, 6 is a gate terminal, 7a, 7b, 7c,
7d is a resistor, and 8 is a ground. In addition, in the figure,
The same reference numerals indicate the same or corresponding parts.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] モノリシツクマイクロ波集積回路等の上に形成
された４端子を持つ３ｄＢ方向性結合器と、上記
３ｄＢ方向性結合器の２分配された２つの入出力
端子とグランドの間にそれぞれ設けられた、ドレ
イン−ソース間を直列に縦続接続された所定の数
の電界効果トランジスタと、前記電界効果トラン
ジスタのドレイン−ソース間のそれぞれ並列に接
続された所定の抵抗値を持つ抵抗とからなる可変
減衰器。 A 3 dB directional coupler with four terminals formed on a monolithic microwave integrated circuit or the like, and a 3 dB directional coupler provided between the two divided input/output terminals of the 3 dB directional coupler and the ground, respectively. A variable attenuator comprising a predetermined number of field effect transistors connected in series between drains and sources, and resistors each having a predetermined resistance value connected in parallel between the drains and sources of the field effect transistors.
JP8088190U 1990-07-30 1990-07-30 Pending JPH0438105U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8088190U JPH0438105U (en) 1990-07-30 1990-07-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8088190U JPH0438105U (en) 1990-07-30 1990-07-30

Publications (1)

Publication Number Publication Date
JPH0438105U true JPH0438105U (en) 1992-03-31

Family

ID=31626322

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8088190U Pending JPH0438105U (en) 1990-07-30 1990-07-30

Country Status (1)

Country Link
JP (1) JPH0438105U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015174138A1 (en) * 2014-05-15 2015-11-19 日本電気株式会社 Variable attenuator, attenuation adjustment circuit, and attenuation adjustment method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015174138A1 (en) * 2014-05-15 2015-11-19 日本電気株式会社 Variable attenuator, attenuation adjustment circuit, and attenuation adjustment method

Similar Documents

Publication Publication Date Title
JPS61124095U (en)
JPH0292202U (en)
JPS60139326U (en) High frequency signal amplification circuit
JPS6365334U (en)
JPS62158919U (en)
JPS6268320U (en)
JPS5933400U (en) Frequency selection sound image moving circuit
JPH0336217U (en)
JPS61163423U (en)
JPH0284415U (en)
JPS58132413U (en) push-pull amplifier circuit
JPS61166620U (en)
JPH01177612U (en)
JPS643213U (en)
JPS62129821U (en)
JPS63171021U (en)
JPS6140029U (en) signal attenuation device
JPS63187421U (en)
JPS58139719U (en) amplifier circuit
JPS62191216U (en)
JPH0366217U (en)
JPH0188524U (en)
JPH0429240U (en)
JPS6147518U (en) loudness circuit
JPH0463087U (en)