JPH0348688B2 - - Google Patents
Info
- Publication number
- JPH0348688B2 JPH0348688B2 JP61043894A JP4389486A JPH0348688B2 JP H0348688 B2 JPH0348688 B2 JP H0348688B2 JP 61043894 A JP61043894 A JP 61043894A JP 4389486 A JP4389486 A JP 4389486A JP H0348688 B2 JPH0348688 B2 JP H0348688B2
- Authority
- JP
- Japan
- Prior art keywords
- band
- switching
- frequency
- channel
- inductor
- 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 - Lifetime
Links
- 230000004044 response Effects 0.000 claims description 14
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims 1
- 239000003990 capacitor Substances 0.000 description 38
- 230000003071 parasitic effect Effects 0.000 description 10
- 230000010355 oscillation Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/18—Automatic scanning over a band of frequencies
-
- 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
- H03J5/24—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 a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
- H03J5/242—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 a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection
- H03J5/244—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 a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection using electronic means
-
- 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
- H03B5/1203—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 being a single transistor
-
- 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
- H03B5/1237—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
- H03B5/1243—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 voltage variable capacitance diodes
-
- 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
- H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
- H03B2200/003—Circuit elements of oscillators
- H03B2200/004—Circuit elements of oscillators including a variable capacitance, e.g. a varicap, a varactor or a variable capacitance of a diode or transistor
-
- 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
- H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
- H03B2200/003—Circuit elements of oscillators
- H03B2200/0048—Circuit elements of oscillators including measures to switch the frequency band, e.g. by harmonic selection
-
- 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
- H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
- H03B2200/003—Circuit elements of oscillators
- H03B2200/0056—Circuit elements of oscillators including a diode used for switching
-
- 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
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Superheterodyne Receivers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/705,500 US4598423A (en) | 1985-02-28 | 1985-02-28 | Tuning circuit for a multiband tuner |
US705500 | 1985-02-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61212110A JPS61212110A (ja) | 1986-09-20 |
JPH0348688B2 true JPH0348688B2 (US06256357-20010703-M00001.png) | 1991-07-25 |
Family
ID=24833752
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP61043894A Granted JPS61212110A (ja) | 1985-02-28 | 1986-02-27 | 同調器 |
Country Status (9)
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2196197B (en) * | 1986-10-01 | 1990-09-19 | Telefunken Electronic Gmbh | Television tuner |
FR2612017A1 (fr) * | 1987-03-03 | 1988-09-09 | Aerospatiale | Oscillateur a circuit accorde reglable dans une large gamme de frequence |
FR2644647B1 (fr) * | 1989-03-15 | 1991-05-24 | Alcatel Transmission | Oscillateur hyperfrequence commande en tension |
DE3937934A1 (de) * | 1989-11-15 | 1991-05-16 | Thomson Brandt Gmbh | Schaltungsanordnung zur durchschaltung von hf-signalen |
DE4006018A1 (de) * | 1990-02-26 | 1991-08-29 | Thomson Brandt Gmbh | Schaltungsanordnung zur erzeugung einer sperrspannung fuer schaltdioden |
US5428828A (en) * | 1992-08-28 | 1995-06-27 | Thomson Consumer Electronics, Inc. | Television receiver tuning circuit |
US5550576A (en) * | 1995-04-17 | 1996-08-27 | Starsight Telecast Incorporated | Method and apparatus for merging television program schedule information received from multiple television schedule information sources |
US8539528B2 (en) * | 1995-04-17 | 2013-09-17 | Starsight Telecast, Inc. | Multi-source switching in a television system |
US5892410A (en) * | 1997-02-19 | 1999-04-06 | Motorola, Inc. | Method and apparatus for transmitting radio frequency signals |
JPH10270937A (ja) * | 1997-03-27 | 1998-10-09 | Murata Mfg Co Ltd | 電圧制御発振器 |
US6218909B1 (en) * | 1998-10-23 | 2001-04-17 | Texas Insturments Israel Ltd. | Multiple frequency band voltage controlled oscillator |
US6194976B1 (en) * | 1999-03-29 | 2001-02-27 | Qualcomm Incorporated | Multiple band voltage controlled oscillator using impedance scaling |
JP3548819B2 (ja) * | 1999-10-29 | 2004-07-28 | 株式会社村田製作所 | 周波数切替型発振器及びそれを用いた電子機器 |
JP2001144535A (ja) * | 1999-11-16 | 2001-05-25 | Tdk Corp | マルチバンド型電圧制御発振器 |
US6504443B1 (en) | 2000-05-17 | 2003-01-07 | Nec America, Inc., | Common anode varactor tuned LC circuit |
CN1572107A (zh) * | 2001-10-16 | 2005-01-26 | Rf信息公司 | 在单片集成电路中实现接收机功能的方法与装置 |
US7199844B2 (en) * | 2002-05-28 | 2007-04-03 | Rfstream Corporation | Quadratic nyquist slope filter |
WO2003103131A2 (en) * | 2002-05-29 | 2003-12-11 | Ukom, Inc. | Image rejection quadratic filter |
WO2003103143A1 (en) * | 2002-05-29 | 2003-12-11 | Ukom, Inc. | Methods and apparatus for tuning using successive aproximation |
US6882245B2 (en) * | 2002-06-05 | 2005-04-19 | Rf Stream Corporation | Frequency discrete LC filter bank |
AU2003243422A1 (en) * | 2002-06-05 | 2003-12-22 | Rfstream Corporation | Quadratic video demodulation with baseband nyquist filter |
US6940365B2 (en) * | 2003-07-18 | 2005-09-06 | Rfstream Corporation | Methods and apparatus for an improved discrete LC filter |
EP1861925A2 (en) * | 2005-03-11 | 2007-12-05 | Corporation Rfstream | Radio frequency inductive-capacitive filter circuit topology |
US7358795B2 (en) * | 2005-03-11 | 2008-04-15 | Rfstream Corporation | MOSFET temperature compensation current source |
US20060217095A1 (en) * | 2005-03-11 | 2006-09-28 | Takatsuga Kamata | Wideband tuning circuit |
KR101147250B1 (ko) * | 2006-01-27 | 2012-05-18 | 삼성전자주식회사 | 적응적으로 펄스 폭 변조 신호를 복조하는 복조기 및 복조방법 |
US20090172544A1 (en) * | 2007-12-31 | 2009-07-02 | United Video Properties, Inc. | Interactive media guidance application with access to multiple data sets |
US20090172736A1 (en) * | 2007-12-31 | 2009-07-02 | United Video Properties, Inc. | Interactive media guidance application with access to multiple data paths |
ITMI20091685A1 (it) * | 2009-09-30 | 2011-04-01 | Siae Microelettronica Spa | Circuito risonante per oscillatori a microonde e oscillatore dotato di tale circuito risonante |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3264566A (en) * | 1962-07-13 | 1966-08-02 | Gen Instrument Corp | Electronic switching of tuned circuits |
GB1181386A (en) * | 1966-05-06 | 1970-02-18 | Orega Electro Mecanique | Improvements in or relating to UHF-VHF selector circuits |
DE2503785C3 (de) * | 1975-01-30 | 1984-07-12 | Telefunken electronic GmbH, 7100 Heilbronn | Kombituner für die Frequenzbereiche UHF und VHF |
JPS6046895B2 (ja) * | 1978-08-04 | 1985-10-18 | アルプス電気株式会社 | 電子同調チユ−ナ |
US4363135A (en) * | 1980-10-27 | 1982-12-07 | Zenith Radio Corporation | Four band VHF varactor tuner |
US4404686A (en) * | 1980-12-01 | 1983-09-13 | Zenith Radio Corporation | Four band VHF varactor tuner to cover extended CATV band utilizing two switching diodes per resonant circuit |
US4380827A (en) * | 1981-09-21 | 1983-04-19 | Zenith Radio Corporation | Oscillator for television tuner |
US4418427A (en) * | 1982-03-30 | 1983-11-29 | Rca Corporation | Tuning system for a multi-band television receiver |
FI75962C (fi) * | 1982-03-30 | 1988-08-08 | Rca Corp | Avstaemningssystem foer en flerbandig televisionsmottagare. |
DE3321262A1 (de) * | 1983-06-11 | 1984-12-13 | Telefunken electronic GmbH, 7100 Heilbronn | Abstimmschaltung fuer die bereiche uhf- und vhf |
-
1985
- 1985-02-28 US US06/705,500 patent/US4598423A/en not_active Expired - Lifetime
- 1985-12-11 KR KR1019850009303A patent/KR940005381B1/ko not_active IP Right Cessation
-
1986
- 1986-02-13 CA CA000501786A patent/CA1239234A/en not_active Expired
- 1986-02-27 DE DE19863606435 patent/DE3606435A1/de not_active Ceased
- 1986-02-27 FR FR868602732A patent/FR2578124B1/fr not_active Expired - Fee Related
- 1986-02-27 GB GB08604833A patent/GB2171867B/en not_active Expired
- 1986-02-27 JP JP61043894A patent/JPS61212110A/ja active Granted
-
1992
- 1992-02-03 SG SG100/92A patent/SG10092G/en unknown
-
1994
- 1994-03-10 HK HK196/94A patent/HK19694A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
GB8604833D0 (en) | 1986-04-03 |
CA1239234A (en) | 1988-07-12 |
DE3606435A1 (de) | 1986-08-28 |
GB2171867B (en) | 1989-02-15 |
HK19694A (en) | 1994-03-18 |
FR2578124B1 (fr) | 1990-03-16 |
FR2578124A1 (fr) | 1986-08-29 |
KR860006871A (ko) | 1986-09-15 |
SG10092G (en) | 1992-03-20 |
KR940005381B1 (ko) | 1994-06-17 |
US4598423A (en) | 1986-07-01 |
JPS61212110A (ja) | 1986-09-20 |
GB2171867A (en) | 1986-09-03 |
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