SG45891G - Frequency selective network - Google Patents
Frequency selective networkInfo
- Publication number
- SG45891G SG45891G SG458/91A SG45891A SG45891G SG 45891 G SG45891 G SG 45891G SG 458/91 A SG458/91 A SG 458/91A SG 45891 A SG45891 A SG 45891A SG 45891 G SG45891 G SG 45891G
- Authority
- SG
- Singapore
- Prior art keywords
- frequency selective
- selective network
- network
- frequency
- selective
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/50—Tuning indicators; Automatic tuning control
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/24—Continuous tuning of more than one resonant circuit simultaneously, the circuits being tuned to substantially the same frequency, e.g. for single-knob tuning
- H03J3/26—Continuous tuning of more than one resonant circuit simultaneously, the circuits being tuned to substantially the same frequency, e.g. for single-knob tuning the circuits being coupled so as to form a bandpass filter
-
- 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
- H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
-
- 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
- H04B1/20—Circuits for coupling gramophone pick-up, recorder output, or microphone to receiver
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Noise Elimination (AREA)
- Superheterodyne Receivers (AREA)
- Filters And Equalizers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/705,496 US4601062A (en) | 1985-02-28 | 1985-02-28 | Tracking image frequency trap |
Publications (1)
Publication Number | Publication Date |
---|---|
SG45891G true SG45891G (en) | 1991-07-26 |
Family
ID=24833736
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SG458/91A SG45891G (en) | 1985-02-28 | 1991-06-15 | Frequency selective network |
Country Status (8)
Country | Link |
---|---|
US (1) | US4601062A (fr) |
JP (1) | JPH0685499B2 (fr) |
KR (1) | KR930004132B1 (fr) |
CA (1) | CA1237480A (fr) |
DE (1) | DE3606433A1 (fr) |
FR (1) | FR2578131B1 (fr) |
GB (1) | GB2171872B (fr) |
SG (1) | SG45891G (fr) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4662001A (en) * | 1985-08-15 | 1987-04-28 | Zenith Electronics Corporation | Tunable notch filter for image frequency and conducted local oscillator leakage rejection |
US4894629A (en) * | 1986-03-04 | 1990-01-16 | Murata Manufacturing Co., Ltd. | Bandpass filter having magnetically coupled resonators |
US4835608A (en) * | 1988-05-31 | 1989-05-30 | Zenith Electronics Corporation | Image trap filter circuit |
US4996599A (en) * | 1989-04-14 | 1991-02-26 | Rca Licensing Corporation | Television tuner oscillator with three point tracking |
US4956710A (en) * | 1989-04-14 | 1990-09-11 | Rca Licensing Corporation | Television receiver tuner high pass input filter with CB trap |
US5054117A (en) * | 1989-08-01 | 1991-10-01 | Zenith Electronics Corporation | Tunable UHF filter for switchable VHF/UHF receiver |
GB2244403A (en) * | 1989-08-30 | 1991-11-27 | Jeremy Kenneth Arthur Everard | A high Q helical resonator |
FI91337C (fi) * | 1990-04-27 | 1994-06-10 | Nokia Mobile Phones Ltd | Kytkentäjärjestely harhatoiston eliminoimiseksi radiopuhelimen vastaanottimessa |
JPH0583149A (ja) * | 1991-09-20 | 1993-04-02 | Pioneer Electron Corp | トラツプ回路 |
US5630225A (en) * | 1992-08-17 | 1997-05-13 | Motorola, Inc. | Dielectric resonator image reject mixer and method |
US5285179A (en) * | 1992-08-28 | 1994-02-08 | Thomson Consumer Electronics, Inc. | Double tuned circuit with balanced output and image trap |
US5392011A (en) * | 1992-11-20 | 1995-02-21 | Motorola, Inc. | Tunable filter having capacitively coupled tuning elements |
JPH06224644A (ja) * | 1993-01-25 | 1994-08-12 | Nec Corp | 半導体装置 |
JPH09162766A (ja) * | 1995-12-04 | 1997-06-20 | Alps Electric Co Ltd | 衛星放送受信チューナ |
JPH09270602A (ja) * | 1996-04-01 | 1997-10-14 | Matsushita Electric Ind Co Ltd | 受信装置 |
US6215374B1 (en) | 1998-03-16 | 2001-04-10 | Broadband Innovations, Inc. | Magnetically coupled resonators for achieving low cost narrow band pass filters having high selectivity, low insertion loss and improved out-of-band rejection |
DE102005056486A1 (de) * | 2005-11-20 | 2007-05-31 | Atmel Germany Gmbh | Eingangsfilter zur Spiegelfrequenzunterdrückung |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR771210A (fr) * | 1934-04-04 | 1934-10-03 | Hazeltine Corp | Dispositif pour transmission optimum d'une fréquence désirée et suppression optimum d'une fréquence indésirable |
NL36084C (fr) * | 1931-07-07 | |||
AT142712B (de) * | 1933-04-05 | 1935-09-10 | Hazeltine Corp | Siebkreisanordnung. |
US2075683A (en) * | 1933-04-05 | 1937-03-30 | Hazeltine Corp | Image frequency rejection system |
GB417410A (en) * | 1933-08-03 | 1934-10-04 | British Acoustic Films Ltd | Filters for super-heterodyne circuits for wireless reception |
GB470002A (en) * | 1936-01-31 | 1937-08-03 | Percy Armstrong Le Marchant | Improvements in and relating to wireless and like receivers |
US2250277A (en) * | 1940-08-02 | 1941-07-22 | Johnson Lab Inc | Coupled circuit regenerative receiving system |
US2449148A (en) * | 1942-12-30 | 1948-09-14 | Rca Corp | Permeability tuned image attenuation circuits |
US3289087A (en) * | 1959-03-24 | 1966-11-29 | Motorola Inc | Image rejection circuit |
US3487339A (en) * | 1967-01-04 | 1969-12-30 | Rca Corp | Intermediate frequency coupling network having a sharply tuned sound carrier cancellation trap inductively coupled to the input circuit |
US3519737A (en) * | 1967-06-07 | 1970-07-07 | Rca Corp | Resonant bandpass filter having two undesired frequency cancellation traps |
JPS5133916A (en) * | 1974-09-17 | 1976-03-23 | Matsushita Electric Ind Co Ltd | Vhf terebijonchuuna no nyuryokukairo |
-
1985
- 1985-02-28 US US06/705,496 patent/US4601062A/en not_active Expired - Lifetime
-
1986
- 1986-02-13 CA CA000501778A patent/CA1237480A/fr not_active Expired
- 1986-02-26 KR KR1019860001342A patent/KR930004132B1/ko not_active IP Right Cessation
- 1986-02-27 DE DE19863606433 patent/DE3606433A1/de active Granted
- 1986-02-27 GB GB08604835A patent/GB2171872B/en not_active Expired
- 1986-02-27 FR FR868602729A patent/FR2578131B1/fr not_active Expired - Fee Related
- 1986-02-28 JP JP61045126A patent/JPH0685499B2/ja not_active Expired - Fee Related
-
1991
- 1991-06-15 SG SG458/91A patent/SG45891G/en unknown
Also Published As
Publication number | Publication date |
---|---|
FR2578131B1 (fr) | 1992-03-20 |
KR860006892A (ko) | 1986-09-15 |
FR2578131A1 (fr) | 1986-08-29 |
US4601062A (en) | 1986-07-15 |
GB2171872A (en) | 1986-09-03 |
JPH0685499B2 (ja) | 1994-10-26 |
DE3606433C2 (fr) | 1991-11-21 |
GB2171872B (en) | 1988-10-05 |
CA1237480A (fr) | 1988-05-31 |
GB8604835D0 (en) | 1986-04-03 |
DE3606433A1 (de) | 1986-08-28 |
KR930004132B1 (ko) | 1993-05-20 |
JPS61205026A (ja) | 1986-09-11 |
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