JPS6348205B2 - - Google Patents
Info
- Publication number
- JPS6348205B2 JPS6348205B2 JP55027111A JP2711180A JPS6348205B2 JP S6348205 B2 JPS6348205 B2 JP S6348205B2 JP 55027111 A JP55027111 A JP 55027111A JP 2711180 A JP2711180 A JP 2711180A JP S6348205 B2 JPS6348205 B2 JP S6348205B2
- Authority
- JP
- Japan
- Prior art keywords
- band
- voltage
- gate
- switching
- diode
- 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
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000003321 amplification Effects 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/74—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of diodes
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/72—Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G1/00—Details of arrangements for controlling amplification
- H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
- H03G1/0017—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid state elements of the amplifier
- H03G1/0029—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid state elements of the amplifier using FETs
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Control Of Amplification And Gain Control (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2711180A JPS56123113A (en) | 1980-03-04 | 1980-03-04 | High frequency amplifying circuit |
| US06/239,607 US4379269A (en) | 1980-03-04 | 1981-03-02 | RF Amplifier having automatic gate bias switching in response to band selection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2711180A JPS56123113A (en) | 1980-03-04 | 1980-03-04 | High frequency amplifying circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56123113A JPS56123113A (en) | 1981-09-28 |
| JPS6348205B2 true JPS6348205B2 (US20050065096A1-20050324-C00069.png) | 1988-09-28 |
Family
ID=12211958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2711180A Granted JPS56123113A (en) | 1980-03-04 | 1980-03-04 | High frequency amplifying circuit |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4379269A (US20050065096A1-20050324-C00069.png) |
| JP (1) | JPS56123113A (US20050065096A1-20050324-C00069.png) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4511813A (en) * | 1981-06-12 | 1985-04-16 | Harris Corporation | Dual-gate MESFET combiner/divider for use in adaptive system applications |
| DE3509516C1 (de) * | 1985-03-16 | 1986-09-18 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Schaltungsanordnung der Eingangsstufen eines Fernsehtuners |
| JPH0416494Y2 (US20050065096A1-20050324-C00069.png) * | 1985-11-21 | 1992-04-14 | ||
| JPS6352510A (ja) * | 1986-08-22 | 1988-03-05 | Toshiba Corp | 電子同調チユ−ナ |
| US4905306A (en) * | 1988-02-26 | 1990-02-27 | Rca Licensing Corporation | Filter switching arrangement for a tuner |
| JPH03211904A (ja) * | 1990-01-16 | 1991-09-17 | Fujitsu Ltd | 高周波増幅器 |
| US5229732A (en) * | 1990-01-16 | 1993-07-20 | Fujitsu Limited | High frequency amplifier having stable amplification operation |
| JPH04111540A (ja) * | 1990-08-30 | 1992-04-13 | Matsushita Electric Ind Co Ltd | ダブルスーパチューナ |
| JP2001168647A (ja) * | 1999-12-13 | 2001-06-22 | Hitachi Ltd | 高周波電力増幅モジュール及び無線通信装置 |
| JP3108712U (ja) * | 2004-11-11 | 2005-04-28 | アルプス電気株式会社 | 可変利得増幅回路 |
| WO2008073075A1 (en) * | 2006-12-11 | 2008-06-19 | Thomson Licensing | Automatic gain control with improved cross-modulation |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5115315A (en) * | 1974-07-29 | 1976-02-06 | Hitachi Ltd | Vhf terebichuunano kongokairo |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4048598A (en) * | 1976-05-28 | 1977-09-13 | Rca Corporation | Uhf tuning circuit utilizing a varactor diode |
-
1980
- 1980-03-04 JP JP2711180A patent/JPS56123113A/ja active Granted
-
1981
- 1981-03-02 US US06/239,607 patent/US4379269A/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5115315A (en) * | 1974-07-29 | 1976-02-06 | Hitachi Ltd | Vhf terebichuunano kongokairo |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56123113A (en) | 1981-09-28 |
| US4379269A (en) | 1983-04-05 |
