ES8300231A1 - Perfeccionamientos en un paso de entrada de radiofrecuencia para receptores de television. - Google Patents
Perfeccionamientos en un paso de entrada de radiofrecuencia para receptores de television.Info
- Publication number
- ES8300231A1 ES8300231A1 ES506832A ES506832A ES8300231A1 ES 8300231 A1 ES8300231 A1 ES 8300231A1 ES 506832 A ES506832 A ES 506832A ES 506832 A ES506832 A ES 506832A ES 8300231 A1 ES8300231 A1 ES 8300231A1
- Authority
- ES
- Spain
- Prior art keywords
- coupling network
- frequency
- field effect
- effect transistor
- impedance
- 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
Links
- 230000008878 coupling Effects 0.000 abstract 6
- 238000010168 coupling process Methods 0.000 abstract 6
- 238000005859 coupling reaction Methods 0.000 abstract 6
- 230000001419 dependent effect Effects 0.000 abstract 5
- 230000005669 field effect Effects 0.000 abstract 5
- 230000009466 transformation Effects 0.000 abstract 1
- 230000001131 transforming effect Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/28—Impedance matching networks
-
- 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
- H03F1/26—Modifications of amplifiers to reduce influence of noise generated by amplifying elements
-
- 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
- H03F3/193—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only with field-effect devices
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Networks Using Active Elements (AREA)
- Amplifiers (AREA)
- Filters And Equalizers (AREA)
Abstract
ETAPA DE ENTRADA DE RADIOFRECUENCIA PARA RECEPTORES DE TELEVISION. CONSTA DE UNOS TRANSISTORES DE EFECTO DE CAMPO (26 Y 33) QUE TIENEN UNO DE SUS ELECTRODOS DE CONTROL CONECTADO A UNA ENTRADA DE ANTENA (2) A TRAVES DE UNOS CIRCUITOS DE ACOPLAMIENTO (12 A 23, 30 Y 31) DEPENDIENTES DE LA FRECUENCIA. UNO DE ESTOS CIRCUITOS (12 A 23) TERMINA EN UNA RESISTENCIA (24) CUYO VALOR SE SELECCIONA DE TAL FORMA QUE, POR UNA PARTE, EL CIRCUITO TENGA UNA TERMINACION LIBRE DE REFLEXIONES DENTRO DE LIMITES ACEPTABLES Y, POR OTRA PARTE, QUE LA COMBINACION EN PARALELO DE ESTA RESISTENCIA CON OTRA (25) Y CON LA IMPEDANCIA DEL CIRCUITO SEA IGUAL A LA IMPEDANCIA OPTIMA PARA RUIDO DEL TRANSISTOR DE EFECTO DE CAMPO (26).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8006059A NL8006059A (nl) | 1980-11-06 | 1980-11-06 | Hf-ingangstrap voor tv-ontvangers met breedbandkarakteristiek. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES8300231A1 true ES8300231A1 (es) | 1982-10-01 |
| ES506832A0 ES506832A0 (es) | 1982-10-01 |
Family
ID=19836118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES506832A Granted ES506832A0 (es) | 1980-11-06 | 1981-11-04 | Perfeccionamientos en un paso de entrada de radiofrecuencia para receptores de television. |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US4414688A (es) |
| JP (1) | JPS57109432A (es) |
| AR (1) | AR226613A1 (es) |
| AU (1) | AU544926B2 (es) |
| BR (1) | BR8107120A (es) |
| DE (1) | DE3142711C2 (es) |
| ES (1) | ES506832A0 (es) |
| FR (1) | FR2493632B1 (es) |
| GB (1) | GB2087182B (es) |
| HK (1) | HK99184A (es) |
| IT (1) | IT1139680B (es) |
| NL (1) | NL8006059A (es) |
| SG (1) | SG76984G (es) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4956710A (en) * | 1989-04-14 | 1990-09-11 | Rca Licensing Corporation | Television receiver tuner high pass input filter with CB trap |
| US5042085A (en) * | 1989-05-12 | 1991-08-20 | Motorola, Inc. | Radio frequency data communication band pass filter |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL6517121A (es) * | 1965-12-30 | 1967-07-03 | ||
| US3482167A (en) * | 1967-06-12 | 1969-12-02 | Rca Corp | Automatic gain control system employing multiple insulated gate field effect transistor |
| NL6803411A (es) * | 1968-03-09 | 1969-09-11 | ||
| US4048598A (en) * | 1976-05-28 | 1977-09-13 | Rca Corporation | Uhf tuning circuit utilizing a varactor diode |
-
1980
- 1980-11-06 NL NL8006059A patent/NL8006059A/nl not_active Application Discontinuation
-
1981
- 1981-09-30 AR AR286953A patent/AR226613A1/es active
- 1981-10-07 US US06/309,311 patent/US4414688A/en not_active Expired - Fee Related
- 1981-10-28 DE DE3142711A patent/DE3142711C2/de not_active Expired
- 1981-11-02 GB GB8132998A patent/GB2087182B/en not_active Expired
- 1981-11-03 IT IT24827/81A patent/IT1139680B/it active
- 1981-11-03 BR BR8107120A patent/BR8107120A/pt unknown
- 1981-11-04 FR FR8120679A patent/FR2493632B1/fr not_active Expired
- 1981-11-04 ES ES506832A patent/ES506832A0/es active Granted
- 1981-11-04 AU AU77101/81A patent/AU544926B2/en not_active Ceased
- 1981-11-05 JP JP56176609A patent/JPS57109432A/ja active Granted
-
1984
- 1984-10-31 SG SG769/84A patent/SG76984G/en unknown
- 1984-12-19 HK HK991/84A patent/HK99184A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2493632B1 (es) | 1984-06-29 |
| US4414688A (en) | 1983-11-08 |
| AR226613A1 (es) | 1982-07-30 |
| HK99184A (en) | 1984-12-28 |
| NL8006059A (nl) | 1982-06-01 |
| DE3142711C2 (de) | 1986-01-23 |
| GB2087182A (en) | 1982-05-19 |
| AU7710181A (en) | 1982-05-13 |
| JPS6336167B2 (es) | 1988-07-19 |
| SG76984G (en) | 1985-04-26 |
| BR8107120A (pt) | 1982-07-20 |
| AU544926B2 (en) | 1985-06-20 |
| ES506832A0 (es) | 1982-10-01 |
| FR2493632A1 (es) | 1982-05-07 |
| DE3142711A1 (de) | 1982-05-27 |
| IT8124827A0 (it) | 1981-11-03 |
| IT1139680B (it) | 1986-09-24 |
| JPS57109432A (en) | 1982-07-07 |
| GB2087182B (en) | 1984-09-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD1A | Patent lapsed |
Effective date: 19970303 |