JP4667924B2 - 可変容量回路および可変容量回路の制御方法 - Google Patents
可変容量回路および可変容量回路の制御方法 Download PDFInfo
- Publication number
- JP4667924B2 JP4667924B2 JP2005095482A JP2005095482A JP4667924B2 JP 4667924 B2 JP4667924 B2 JP 4667924B2 JP 2005095482 A JP2005095482 A JP 2005095482A JP 2005095482 A JP2005095482 A JP 2005095482A JP 4667924 B2 JP4667924 B2 JP 4667924B2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- variable capacitance
- circuit
- variable
- terminal
- 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
Links
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1231—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device the amplifier comprising one or more bipolar transistors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1206—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification
- H03B5/1212—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification the amplifier comprising a pair of transistors, wherein an output terminal of each being connected to an input terminal of the other, e.g. a cross coupled pair
- H03B5/1215—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification the amplifier comprising a pair of transistors, wherein an output terminal of each being connected to an input terminal of the other, e.g. a cross coupled pair the current source or degeneration circuit being in common to both transistors of the pair, e.g. a cross-coupled long-tailed pair
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1237—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
- H03B5/124—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance
- H03B5/1246—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance the means comprising transistors used to provide a variable capacitance
- H03B5/1253—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator the means comprising a voltage dependent capacitance the means comprising transistors used to provide a variable capacitance the transistors being field-effect transistors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1237—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator
- H03B5/1293—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device comprising means for varying the frequency of the generator having means for achieving a desired tuning characteristic, e.g. linearising the frequency characteristic across the tuning voltage range
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B2201/00—Aspects of oscillators relating to varying the frequency of the oscillations
- H03B2201/02—Varying the frequency of the oscillations by electronic means
- H03B2201/0208—Varying the frequency of the oscillations by electronic means the means being an element with a variable capacitance, e.g. capacitance diode
Landscapes
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Filters And Equalizers (AREA)
Description
fvco=1/(2π(L×C)1/2)・・・(式1)
インダクタンスLは、コイルL1およびL2により定まる。またキャパシタンスCは、バラクタVA1およびVA2の容量値と、キャパシタC1およびC2との合成容量により定まる。そしてバラクタVA1およびVA2の容量値は、制御電圧VTに応じて制御される端子間電圧VDによって可変とされる。すなわち、(式1)におけるキャパシタンスCを、制御電圧VTで制御することができる。その結果、出力信号foutの発振周波数fvcoを、制御電圧VTによって制御することが可能となる。
(付記1)
第1電圧が入力され、該第1電圧に応じて可変な第2電圧を出力する第2電圧制御回路と、
前記第1電圧が一端に印加され、前記第2電圧が他端に印加され、該第1電圧と該第2電圧との差電圧に応じて容量値が制御される少なくとも1つの可変容量素子と
を備えることを特徴とする可変容量回路。
(付記2)
前記第2電圧制御回路は、
前記第1電圧に対して前記第2電圧が負の相関を有するように、前記第2電圧を可変に調整することを特徴とする付記1に記載の可変容量回路。
(付記3)
前記第2電圧制御回路は、
前記第1電圧に対して前記第2電圧が正の相関を有するように、前記第2電圧を可変に調整することを特徴とする付記1に記載の可変容量回路。
(付記4)
付記1に記載の前記可変容量回路と、
該可変容量回路に備えられる前記可変容量素子に接続されるインダクタと、
該可変容量素子と前記インダクタとの接続経路上に備えられる接続用キャパシタと
を備えることを特徴とする電圧制御発振回路。
(付記5)
前記第2電圧制御回路の出力端子と前記可変容量素子との接続経路上に、抵抗素子を備えることを特徴とする付記4に記載の電圧制御発振回路。
(付記6)
第1電圧の値に応じて可変な第2電圧を出力するステップと、
該第1電圧と該第2電圧との差電圧に応じて可変容量素子の容量値を制御するステップと
を備えることを特徴とする可変容量回路の制御方法。
(付記7)
前記第1電圧に対して前記第2電圧が負の相関を有するように、前記第2電圧を可変に調整することを特徴とする付記6に記載の可変容量回路の制御方法。
(付記8)
前記第1電圧に対する前記可変容量素子の容量値の変化割合を大きくする場合には、前記第1電圧に対する前記第2電圧の減少割合を、該変化割合に応じて大きくし、
前記第1電圧に対する前記可変容量素子の容量値の前記変化割合を小さくする場合には、前記第1電圧に対する前記第2電圧の減少割合を、該変化割合に応じて小さくすることを特徴とする付記7に記載の可変容量回路の制御方法。
(付記9)
前記第1電圧に対して前記第2電圧が正の相関を有するように、前記第2電圧を可変に調整することを特徴とする付記6に記載の可変容量回路の制御方法。
(付記10)
前記第1電圧に対する前記可変容量素子の容量値の変化割合を小さくする場合には、前記第1電圧に対する前記第2電圧の増加割合を、該変化割合に応じて大きくし、
前記第1電圧に対する前記可変容量素子の容量値の前記変化割合を大きくする場合には、前記第1電圧に対する前記第2電圧の増加割合を、該変化割合に応じて小さくすることを特徴とする付記9に記載の可変容量回路の制御方法。
(付記11)
前記可変容量素子の目的容量範囲に応じて定まる差電圧の範囲の中心値と、
前記第1電圧および前記第2電圧によって定まる差電圧の範囲の中心値との差分に応じたオフセットを、前記第2電圧に付与することを特徴とする付記6に記載の可変容量回路の制御方法。
2 可変容量回路
3 キャパシタ部
10 電圧制御発振回路
11 容量値制御回路
C1、C2 キャパシタ
CNTOUT 出力電圧
CV バラクタ容量値
OS1 オフセット
OS2 オフセット
SA 変動幅
VA1、VA2 バラクタ
VD 端子間電圧
VT 制御電圧
Vcc 電源電圧
fout 出力信号
fvco 発振周波数
Claims (4)
- 第1電圧が入力され、該第1電圧の変動幅より狭い変動幅で該第1電圧と正の相関を有して可変する第2電圧を出力する第2電圧制御回路と、
前記第1電圧が一端に印加され、前記第2電圧が他端に印加され、該第1電圧と該第2電圧との差電圧に応じて容量値が制御される少なくとも1つの可変容量素子とを備え、
前記第2電圧制御回路は、前記可変容量素子の容量が前記差電圧に対して比例関係で変化する領域である前記差電圧の線形領域の範囲の中心値と、前記差電圧の上限値から下限値までの間の範囲である前記差電圧の変動範囲の中心値とが近づくように前記第2電圧にオフセットを付与して、前記変動範囲を調整することを特徴とする可変容量回路。 - 請求項1に記載の前記可変容量回路と、
該可変容量回路に備えられる前記可変容量素子に接続されるインダクタと、
該可変容量素子と前記インダクタとの接続経路上に備えられる接続用キャパシタと
を備えることを特徴とする電圧制御発振回路。 - 前記第2電圧制御回路の出力端子と前記可変容量素子との接続経路上に、抵抗素子を備えることを特徴とする請求項2に記載の電圧制御発振回路。
- 第1電圧が入力され、該第1電圧の変動幅より狭い変動幅で該第1電圧と正の相関を有して可変する第2電圧を出力するステップと、
前記第1電圧が一端に印加され前記第2電圧が他端に印加される可変容量素子において、該第1電圧と該第2電圧との差電圧に応じて前記可変容量素子の容量値を制御するステップとを備え、
前記第2電圧を出力するステップは、前記可変容量素子の容量が前記差電圧に対して比例関係で変化する領域である前記差電圧の線形領域の範囲の中心値と、前記差電圧の上限値から下限値までの間の範囲である前記差電圧の変動範囲の中心値とが近づくように前記第2電圧にオフセットを付与して、前記変動範囲を調整することを特徴とする可変容量回路の制御方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005095482A JP4667924B2 (ja) | 2005-03-29 | 2005-03-29 | 可変容量回路および可変容量回路の制御方法 |
US11/216,000 US7301412B2 (en) | 2005-03-29 | 2005-09-01 | Variable capacity circuit and control method of variable capacity circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005095482A JP4667924B2 (ja) | 2005-03-29 | 2005-03-29 | 可変容量回路および可変容量回路の制御方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006279524A JP2006279524A (ja) | 2006-10-12 |
JP4667924B2 true JP4667924B2 (ja) | 2011-04-13 |
Family
ID=37069662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005095482A Expired - Fee Related JP4667924B2 (ja) | 2005-03-29 | 2005-03-29 | 可変容量回路および可変容量回路の制御方法 |
Country Status (2)
Country | Link |
---|---|
US (1) | US7301412B2 (ja) |
JP (1) | JP4667924B2 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8208596B2 (en) * | 2007-01-17 | 2012-06-26 | Sony Corporation | System and method for implementing a dual-mode PLL to support a data transmission procedure |
US8106719B2 (en) * | 2007-01-23 | 2012-01-31 | Nec Corporation | Voltage-controlled oscillator, phase-locked loop circuit and clock data recovery circuit |
US8749316B2 (en) * | 2009-06-23 | 2014-06-10 | Qualcomm Incorporated | Programmable varactor and methods of operation thereof |
US8134418B2 (en) * | 2010-04-13 | 2012-03-13 | Xilinx, Inc. | Varactor circuit and voltage-controlled oscillation |
US9099956B2 (en) | 2011-04-26 | 2015-08-04 | King Abdulaziz City For Science And Technology | Injection locking based power amplifier |
US9485085B2 (en) * | 2015-03-10 | 2016-11-01 | Qualcomm Incorporated | Phase locked loop (PLL) architecture |
CN113330682B (zh) * | 2019-04-09 | 2022-11-04 | 华为技术有限公司 | 一种差分振荡器 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0637631A (ja) * | 1992-03-02 | 1994-02-10 | Sony Tektronix Corp | Pll発振装置 |
JPH0645826A (ja) * | 1992-04-20 | 1994-02-18 | Nec Corp | 電圧制御発振器 |
JP2003249852A (ja) * | 2002-02-22 | 2003-09-05 | Matsushita Electric Ind Co Ltd | 周波数制御装置 |
JP2004007037A (ja) * | 2002-05-30 | 2004-01-08 | Mitsubishi Electric Corp | 電圧制御発振器 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11168355A (ja) | 1997-12-02 | 1999-06-22 | Mitsumi Electric Co Ltd | 可変容量ダイオードの容量値制御回路及び該回路を有する可変周波数発振器 |
US6292065B1 (en) * | 2000-01-27 | 2001-09-18 | International Business Machines Corporation | Differential control topology for LC VCO |
JP2002290152A (ja) | 2001-03-28 | 2002-10-04 | Nippon Dempa Kogyo Co Ltd | 電圧制御発振器 |
JP2004056720A (ja) | 2002-07-24 | 2004-02-19 | Sharp Corp | 電圧制御発振器並びにそれを用いた高周波受信器及び高周波送信器 |
US7026883B2 (en) * | 2004-03-12 | 2006-04-11 | Intel Corporation | Feedback loop for LC VCO |
-
2005
- 2005-03-29 JP JP2005095482A patent/JP4667924B2/ja not_active Expired - Fee Related
- 2005-09-01 US US11/216,000 patent/US7301412B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0637631A (ja) * | 1992-03-02 | 1994-02-10 | Sony Tektronix Corp | Pll発振装置 |
JPH0645826A (ja) * | 1992-04-20 | 1994-02-18 | Nec Corp | 電圧制御発振器 |
JP2003249852A (ja) * | 2002-02-22 | 2003-09-05 | Matsushita Electric Ind Co Ltd | 周波数制御装置 |
JP2004007037A (ja) * | 2002-05-30 | 2004-01-08 | Mitsubishi Electric Corp | 電圧制御発振器 |
Also Published As
Publication number | Publication date |
---|---|
US7301412B2 (en) | 2007-11-27 |
JP2006279524A (ja) | 2006-10-12 |
US20060220755A1 (en) | 2006-10-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR100491280B1 (ko) | 멀티 단자형 mos 바랙터 | |
JP4667924B2 (ja) | 可変容量回路および可変容量回路の制御方法 | |
US6509805B2 (en) | LC resonance circuit and voltage-controlled oscillation circuit | |
CN1812252B (zh) | 压控振荡器 | |
US7183867B2 (en) | Voltage controlled variable capacitor | |
US7564318B2 (en) | Switch capacitance and varactor banks applied to voltage controlled oscillator having constant frequency tuning sensitivity | |
US20050190002A1 (en) | Voltage-controlled oscillator, radio communication apparatus and voltage-controlled oscillation method | |
JP4089938B2 (ja) | 電圧制御発振器 | |
US20060181356A1 (en) | Quadrature voltage controlled oscillator | |
US20090289732A1 (en) | Semiconductor integrated circuit device and frequency synthesizer | |
US20060232348A1 (en) | Inductor unit and oscillator using the inductor unit | |
US7369008B2 (en) | MOS varactor and voltage-controlled oscillator using the same | |
US7675374B2 (en) | Voltage controlled oscillator with switching bias | |
WO2007072551A1 (ja) | 電圧制御リングオシレータ | |
US8098109B2 (en) | Differential varactor circuit for a voltage controlled oscillator | |
US20050206465A1 (en) | Voltage control oscillator | |
US7268636B2 (en) | Voltage controlled oscillator | |
US20090072919A1 (en) | Voltage-controlled oscillator with wide oscillation frequency range and linear characteristics | |
US8222963B2 (en) | Voltage-controlled oscillator | |
KR20080112813A (ko) | 능동 인덕터를 이용한 전압제어 발진기 | |
US8217728B2 (en) | LC voltage-controlled oscillator | |
JP4390105B2 (ja) | 可変容量機能のオンオフスイッチ付き可変容量回路、及びこの可変容量回路を用いた電圧制御発振器 | |
JP2008306331A (ja) | 半導体集積回路装置 | |
JPH1051238A (ja) | 電圧制御発振器 | |
JP4539161B2 (ja) | 電圧制御発振器 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20070517 |
|
RD03 | Notification of appointment of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7423 Effective date: 20070521 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20080228 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080422 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20080623 |
|
A711 | Notification of change in applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A712 Effective date: 20080728 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20090707 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20090904 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20100706 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20101001 |
|
RD03 | Notification of appointment of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7423 Effective date: 20101001 |
|
A911 | Transfer to examiner for re-examination before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20101014 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20110111 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20110112 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140121 Year of fee payment: 3 |
|
R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |