JP4985978B2 - 変換回路 - Google Patents
変換回路 Download PDFInfo
- Publication number
- JP4985978B2 JP4985978B2 JP2007542474A JP2007542474A JP4985978B2 JP 4985978 B2 JP4985978 B2 JP 4985978B2 JP 2007542474 A JP2007542474 A JP 2007542474A JP 2007542474 A JP2007542474 A JP 2007542474A JP 4985978 B2 JP4985978 B2 JP 4985978B2
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- resistor
- current
- signal
- output
- 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.)
- Expired - Fee Related
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- 238000006243 chemical reaction Methods 0.000 title claims description 6
- 239000003990 capacitor Substances 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 230000007850 degeneration Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3211—Modifications of amplifiers to reduce non-linear distortion in differential amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
- H03F1/22—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of cascode coupling, i.e. earthed cathode or emitter stage followed by earthed grid or base stage respectively
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
- H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/30—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/34—DC amplifiers in which all stages are DC-coupled
- H03F3/343—DC amplifiers in which all stages are DC-coupled with semiconductor devices only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/34—DC amplifiers in which all stages are DC-coupled
- H03F3/343—DC amplifiers in which all stages are DC-coupled with semiconductor devices only
- H03F3/345—DC amplifiers in which all stages are DC-coupled with semiconductor devices only with field-effect devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/06—A balun, i.e. balanced to or from unbalanced converter, being present at the input of an amplifier
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/294—Indexing scheme relating to amplifiers the amplifier being a low noise amplifier [LNA]
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/372—Noise reduction and elimination in amplifier
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/513—Indexing scheme relating to amplifiers the amplifier being made for low supply voltages
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Networks Using Active Elements (AREA)
- Amplifiers (AREA)
Description
Claims (3)
- 入力端子でシングルエンド入力信号を受け、一組の出力端子間に差動出力を与える不平衡又は平衡変換回路であって、
第一のトランジスタを含む第一の分岐部と、
第二のトランジスタと、第三のトランジスタと、を含む第二の分岐部と、
電流マッチング手段と、
可変容量コンデンサと、
固定容量コンデンサと、
を備え、
前記第一の分岐部は、さらに、
シングルエンド入力電圧信号を受けるための入力端子と、
前記入力端子と前記第一のトランジスタのエミッタとの間に接続され、前記第一のトランジスタを流れる電流信号を与える第一の抵抗と、
前記第一のトランジスタのコレクタに接続され、電圧出力信号を与える第二の抵抗と、
前記第一のトランジスタのコレクタと前記第二の抵抗との間に接続された第一の出力端子と、を含み、
前記第二の分岐部は、さらに、
前記第三のトランジスタを流れる電流信号に応じた出力信号を与える第三の抵抗と、
前記第二のトランジスタのコレクタと前記第三の抵抗との間に接続された第二の出力端子と、を含み、
前記電流マッチング手段は、前記第一の出力端子と前記第二の出力端子との間の出力電圧信号に応じて、前記第三の抵抗を流れる電流を前記第二の抵抗を流れる電流にほぼ等しくなるように保ち、
前記第二のトランジスタのコレクタは、前記第三の抵抗に接続され、
前記第二のトランジスタのエミッタは、前記第三のトランジスタのコレクタに接続され、
前記可変容量コンデンサは、前記第一のトランジスタのエミッタと前記第二のトランジスタのベースとの間に接続され、
前記固定容量コンデンサは、前記第一のトランジスタのベースと前記第二のトランジスタのエミッタとの間に接続された、変換回路。 - 前記電流マッチング手段は、前記第一の出力端子と前記第二の出力端子との間の電圧差を検知し、前記第三のトランジスタに信号を与え、前記第三のトランジスタを流れる電流を調整する電圧検知手段を備えた請求項1に記載の回路。
- 前記電流検知手段は差動増幅器を含む請求項2に記載の回路。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04106101 | 2004-11-26 | ||
EP04106101.1 | 2004-11-26 | ||
PCT/IB2005/053890 WO2006117599A2 (en) | 2004-11-26 | 2005-11-24 | Single - ended to differential transformer circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008522477A JP2008522477A (ja) | 2008-06-26 |
JP4985978B2 true JP4985978B2 (ja) | 2012-07-25 |
Family
ID=37106340
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007542474A Expired - Fee Related JP4985978B2 (ja) | 2004-11-26 | 2005-11-24 | 変換回路 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7760028B2 (ja) |
EP (1) | EP1842285B1 (ja) |
JP (1) | JP4985978B2 (ja) |
CN (1) | CN101091306B (ja) |
WO (1) | WO2006117599A2 (ja) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100916542B1 (ko) * | 2007-02-08 | 2009-09-14 | 삼성전자주식회사 | 신호 변환기, 신호 변환 보상방법, 신호 변환기를 포함하는 rf 수신기, 및 rf신호 수신 방법 |
US8154347B2 (en) * | 2009-06-23 | 2012-04-10 | Fortemedia, Inc. | Audio processing circuit and preamplifier circuit |
US8264281B1 (en) * | 2011-06-03 | 2012-09-11 | Texas Instruments Incorporated | Low-noise amplifier with tuned input and output impedances |
US9031517B2 (en) * | 2011-09-28 | 2015-05-12 | Mediatek | Transmit-receive front end |
US8576008B2 (en) * | 2011-11-10 | 2013-11-05 | SiTune Corporation | Radio frequency signal gain control |
JP6305003B2 (ja) * | 2013-10-16 | 2018-04-04 | 三菱電機株式会社 | 180度移相器 |
EP2913922A1 (en) | 2014-02-28 | 2015-09-02 | Telefonaktiebolaget L M Ericsson (publ) | A low noise amplifier circuit |
KR101715446B1 (ko) | 2014-06-11 | 2017-03-14 | 이화여자대학교 산학협력단 | 차동 전달 임피던스 증폭기 |
CN105207629B (zh) * | 2015-09-21 | 2018-07-27 | 上海华虹宏力半导体制造有限公司 | 一种差分放大电路 |
US9774302B1 (en) | 2016-09-27 | 2017-09-26 | Globalfoundries Inc. | Amplifier circuit with single-ended input and differential outputs |
CN106656100B (zh) * | 2016-12-29 | 2019-03-15 | 福建利利普光电科技有限公司 | 一种单端转双端差分的模拟电路 |
KR101903281B1 (ko) * | 2017-04-26 | 2018-10-01 | 강원대학교산학협력단 | 전류 출혈 회로를 포함하는 저잡음 증폭기 |
CN112311340B (zh) * | 2020-11-06 | 2023-11-10 | 南京迈矽科微电子科技有限公司 | 一种基于开关电容阵列调控的毫米波可变增益功率放大器 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8001120A (nl) * | 1980-02-25 | 1981-09-16 | Philips Nv | Differentiele belastingsschakeling uitgevoerd met veldeffecttransistoren. |
DE3326066A1 (de) * | 1983-07-20 | 1985-01-31 | Robert Bosch Gmbh, 7000 Stuttgart | Verfahren zum betrieb einer gegentakt-verstaerkeranordnung und verstaerkeranordnung hierfuer |
US4675594A (en) * | 1986-07-31 | 1987-06-23 | Honeywell Inc. | Voltage-to-current converter |
US5886547A (en) * | 1996-12-16 | 1999-03-23 | Motorola, Inc. | Circuit and method of controlling mixer linearity |
US6100763A (en) * | 1999-03-29 | 2000-08-08 | Motorola, Inc. | Circuit for RF buffer and method of operation |
US6285259B1 (en) * | 1999-04-21 | 2001-09-04 | Infineon Technologies North America Corp. | System and method for converting from single-ended to differential signals |
US7555263B1 (en) * | 1999-10-21 | 2009-06-30 | Broadcom Corporation | Adaptive radio transceiver |
JP2002305429A (ja) * | 2001-04-05 | 2002-10-18 | Fujitsu Ltd | 変換回路 |
CN1141787C (zh) * | 2002-07-05 | 2004-03-10 | 清华大学 | 变增益的单端到差分的射频低噪声放大器 |
-
2005
- 2005-11-24 US US11/720,319 patent/US7760028B2/en not_active Expired - Fee Related
- 2005-11-24 EP EP05857779.2A patent/EP1842285B1/en not_active Not-in-force
- 2005-11-24 WO PCT/IB2005/053890 patent/WO2006117599A2/en active Application Filing
- 2005-11-24 CN CN2005800403980A patent/CN101091306B/zh not_active Expired - Fee Related
- 2005-11-24 JP JP2007542474A patent/JP4985978B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
WO2006117599A2 (en) | 2006-11-09 |
US7760028B2 (en) | 2010-07-20 |
JP2008522477A (ja) | 2008-06-26 |
EP1842285B1 (en) | 2016-01-20 |
CN101091306A (zh) | 2007-12-19 |
CN101091306B (zh) | 2010-05-26 |
US20080252381A1 (en) | 2008-10-16 |
WO2006117599A3 (en) | 2007-04-05 |
EP1842285A2 (en) | 2007-10-10 |
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