JP6038493B2 - 同調回路 - Google Patents
同調回路 Download PDFInfo
- Publication number
- JP6038493B2 JP6038493B2 JP2012127403A JP2012127403A JP6038493B2 JP 6038493 B2 JP6038493 B2 JP 6038493B2 JP 2012127403 A JP2012127403 A JP 2012127403A JP 2012127403 A JP2012127403 A JP 2012127403A JP 6038493 B2 JP6038493 B2 JP 6038493B2
- Authority
- JP
- Japan
- Prior art keywords
- tuning
- frequency
- oscillation
- inductor
- capacitance
- 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.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
- H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/20—Continuous tuning of single resonant circuit by varying inductance only or capacitance only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
- H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J2200/00—Indexing scheme relating to tuning resonant circuits and selecting resonant circuits
- H03J2200/10—Tuning of a resonator by means of digitally controlled capacitor bank
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Superheterodyne Receivers (AREA)
Description
Claims (4)
- 一対のインダクタおよび同調用可変容量部を含み、前記同調用可変容量部の容量を変更することで同調周波数を調整し、受信信号から帯域が限定された同調信号を得る同調回路であって、
前記同調信号に対応する電流を流す発振用インダクタと、
前記発振用インダクタを含む系の発振周波数を調整する発振用可変容量部と、
前記発振周波数が希望同調周波数に対応する値になるように前記発振用可変容量部の容量を調整し、前記発振用可変容量部の調整された容量に応じて前記同調用可変容量部の容量を調整する制御部と、
を含む、同調回路。 - 前記発振用インダクタを含む系の発振周波数は、前記同調周波数の整数倍であり両者は相関して調整される、請求項1に記載の同調回路。
- 前記整数倍は4倍である、請求項2に記載の同調回路。
- 前記同調用可変容量部および前記発振用可変容量部はいずれも複数のキャパシタおよび複数のスイッチを有するキャパシタバンクであり、前記複数のスイッチをオンオフすることで容量を変更するようになっている、請求項1に記載の同調回路。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012127403A JP6038493B2 (ja) | 2012-06-04 | 2012-06-04 | 同調回路 |
CN201310217926.1A CN103457575B (zh) | 2012-06-04 | 2013-06-03 | 调谐电路 |
US13/909,143 US8862083B2 (en) | 2012-06-04 | 2013-06-04 | Tuning circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012127403A JP6038493B2 (ja) | 2012-06-04 | 2012-06-04 | 同調回路 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2013251876A JP2013251876A (ja) | 2013-12-12 |
JP2013251876A5 JP2013251876A5 (ja) | 2015-07-16 |
JP6038493B2 true JP6038493B2 (ja) | 2016-12-07 |
Family
ID=49670823
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012127403A Active JP6038493B2 (ja) | 2012-06-04 | 2012-06-04 | 同調回路 |
Country Status (3)
Country | Link |
---|---|
US (1) | US8862083B2 (ja) |
JP (1) | JP6038493B2 (ja) |
CN (1) | CN103457575B (ja) |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5970026A (ja) * | 1982-10-13 | 1984-04-20 | Hitachi Ltd | 発振回路 |
US4847572A (en) * | 1986-10-30 | 1989-07-11 | Toko, Inc. | Electronic tuning circuit for AM receiver |
JPH05268109A (ja) * | 1992-03-23 | 1993-10-15 | Sony Corp | 受信機用ic及びこれを使用した受信機 |
JPH06125280A (ja) * | 1992-10-12 | 1994-05-06 | Citizen Watch Co Ltd | 電子式周波数選択受信機 |
JP3264811B2 (ja) * | 1995-11-20 | 2002-03-11 | アルプス電気株式会社 | 電圧制御可変同調回路 |
JP3071138B2 (ja) | 1996-01-23 | 2000-07-31 | 三洋電機株式会社 | Amラジオ受信機 |
JPH10173565A (ja) * | 1996-12-10 | 1998-06-26 | Toko Inc | Amラジオ受信機 |
JP3974497B2 (ja) * | 2002-10-29 | 2007-09-12 | 新潟精密株式会社 | 受信機、デジタル−アナログ変換器および同調回路 |
CN1195252C (zh) * | 2002-12-25 | 2005-03-30 | 上海交通大学 | 电脑用外置式无线广播接收装置 |
CN1455518A (zh) * | 2003-05-26 | 2003-11-12 | 无敌科技(西安)有限公司 | 一种频率设定方法及其装置 |
TW200518484A (en) * | 2003-11-26 | 2005-06-01 | Niigata Seimitsu Co Ltd | AM/FM radio receiver and local oscillation circuit using the same |
JP2008141655A (ja) * | 2006-12-05 | 2008-06-19 | Alps Electric Co Ltd | 可変同調回路及びテレビジョンチューナ |
JP2008227728A (ja) * | 2007-03-09 | 2008-09-25 | Alps Electric Co Ltd | Fmチューナ回路 |
-
2012
- 2012-06-04 JP JP2012127403A patent/JP6038493B2/ja active Active
-
2013
- 2013-06-03 CN CN201310217926.1A patent/CN103457575B/zh active Active
- 2013-06-04 US US13/909,143 patent/US8862083B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN103457575B (zh) | 2016-08-10 |
US20130324067A1 (en) | 2013-12-05 |
CN103457575A (zh) | 2013-12-18 |
JP2013251876A (ja) | 2013-12-12 |
US8862083B2 (en) | 2014-10-14 |
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