JPS6430315A - High frequency attenuator - Google Patents

High frequency attenuator

Info

Publication number
JPS6430315A
JPS6430315A JP18714487A JP18714487A JPS6430315A JP S6430315 A JPS6430315 A JP S6430315A JP 18714487 A JP18714487 A JP 18714487A JP 18714487 A JP18714487 A JP 18714487A JP S6430315 A JPS6430315 A JP S6430315A
Authority
JP
Japan
Prior art keywords
condition
fets
attenuating quantity
attenuation
attenuating
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
JP18714487A
Other languages
Japanese (ja)
Inventor
Tadayoshi Nakatsuka
Shutaro Nanbu
Seiji Sakashita
Hiroaki Ozeki
Ippei Jinno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP18714487A priority Critical patent/JPS6430315A/en
Publication of JPS6430315A publication Critical patent/JPS6430315A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To reduce a high frequency distortion by combining a field effect transistor FET serially or in parallel, and using respective FETs in either of an ON condition or an OFF condition mainly. CONSTITUTION:When a desired attenuating quantity is 0dB, FETs 101-105 are all in the ON condition (condition of minimum attenuating quantity). This is realized by making the potential of attenuating quantity control terminals 117-121 into '0' V. Thereafter, in accordance with the prescribed attenuating quantity, the attenuation is executed by the combination of the ON condition and the OFF condition (condition of maximum attenuating quantity) of the FETs 101-105. In any case, the gate potential of FETs 106 and 107 is controlled by an impedance control terminal 122 and the input output impedance is matched. Thus, since only two points of the ON condition (minimum attenuation) and the OFF condition (maximum attenuation) of the FETs 101-105 can be used, the low distortion is obtained.
JP18714487A 1987-07-27 1987-07-27 High frequency attenuator Pending JPS6430315A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18714487A JPS6430315A (en) 1987-07-27 1987-07-27 High frequency attenuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18714487A JPS6430315A (en) 1987-07-27 1987-07-27 High frequency attenuator

Publications (1)

Publication Number Publication Date
JPS6430315A true JPS6430315A (en) 1989-02-01

Family

ID=16200889

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18714487A Pending JPS6430315A (en) 1987-07-27 1987-07-27 High frequency attenuator

Country Status (1)

Country Link
JP (1) JPS6430315A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19511370A1 (en) * 1994-03-28 1995-10-05 Toshiba Kawasaki Kk Analogue variable attenuator with FET switch and three current sources
WO2005064791A1 (en) * 2003-12-25 2005-07-14 Matsushita Electric Industrial Co., Ltd. Variable attenuator
JP2006173868A (en) * 2004-12-14 2006-06-29 Nippon Telegr & Teleph Corp <Ntt> Variable attenuator
CN103001661A (en) * 2011-09-16 2013-03-27 瑞萨电子株式会社 Antenna switch and communication device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19511370A1 (en) * 1994-03-28 1995-10-05 Toshiba Kawasaki Kk Analogue variable attenuator with FET switch and three current sources
WO2005064791A1 (en) * 2003-12-25 2005-07-14 Matsushita Electric Industrial Co., Ltd. Variable attenuator
JP2006173868A (en) * 2004-12-14 2006-06-29 Nippon Telegr & Teleph Corp <Ntt> Variable attenuator
CN103001661A (en) * 2011-09-16 2013-03-27 瑞萨电子株式会社 Antenna switch and communication device
JP2013066056A (en) * 2011-09-16 2013-04-11 Renesas Electronics Corp Antenna switch and communication apparatus

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