DE2542980A1 - Modulator fuer einen rf-verstaerker - Google Patents
Modulator fuer einen rf-verstaerkerInfo
- Publication number
- DE2542980A1 DE2542980A1 DE19752542980 DE2542980A DE2542980A1 DE 2542980 A1 DE2542980 A1 DE 2542980A1 DE 19752542980 DE19752542980 DE 19752542980 DE 2542980 A DE2542980 A DE 2542980A DE 2542980 A1 DE2542980 A1 DE 2542980A1
- Authority
- DE
- Germany
- Prior art keywords
- circuit
- amplifier
- signal
- power
- modulator according
- 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.)
- Withdrawn
Links
- 230000008859 change Effects 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 2
- 239000004065 semiconductor Substances 0.000 claims 2
- 230000008054 signal transmission Effects 0.000 claims 1
- 239000003990 capacitor Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- 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
- H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
- H03G3/301—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable
- H03G3/3021—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable by varying the duty cycle
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L5/00—Automatic control of voltage, current, or power
- H03L5/02—Automatic control of voltage, current, or power of power
-
- 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
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
- H04B2001/0416—Circuits with power amplifiers having gain or transmission power control
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Amplifiers (AREA)
- Amplitude Modulation (AREA)
- Control Of Amplification And Gain Control (AREA)
- Transmitters (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/510,827 US3943446A (en) | 1974-09-30 | 1974-09-30 | Power and modulation control system |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2542980A1 true DE2542980A1 (de) | 1976-04-15 |
Family
ID=24032362
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19752542980 Withdrawn DE2542980A1 (de) | 1974-09-30 | 1975-09-26 | Modulator fuer einen rf-verstaerker |
Country Status (8)
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2831730A1 (de) | 1978-05-13 | 1979-11-22 | Marconi Co Ltd | Modulations-schaltung |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4066965A (en) * | 1976-09-28 | 1978-01-03 | The United States Of America As Represented By The Secretary Of The Navy | RF GTWT Saturating circuit |
US4122415A (en) * | 1977-03-21 | 1978-10-24 | Rca Corporation | AM transmitter with an offset voltage to the RF stage to compensate for switching time of the modulators |
DE2720930C3 (de) * | 1977-05-10 | 1980-12-11 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Amplitudenmodulierter Sender |
US4199723A (en) * | 1978-02-24 | 1980-04-22 | Rockwell International Corporation | Automatic modulation control apparatus |
US4216427A (en) * | 1978-06-14 | 1980-08-05 | Motorola, Inc. | Adaptive audio compressor |
JPS5595406A (en) * | 1979-01-16 | 1980-07-19 | Toshiba Corp | Amplitude modulator |
US4319359A (en) * | 1980-04-10 | 1982-03-09 | Rca Corporation | Radio transmitter energy recovery system |
US4614918A (en) * | 1980-10-27 | 1986-09-30 | The United States Of America As Represented By The Secretary Of The Navy | Frequency generator with digitally controlled phase modulation |
JPS63522A (ja) * | 1986-06-18 | 1988-01-05 | Kajima Corp | 地中連続壁 |
GB2201559A (en) * | 1987-01-23 | 1988-09-01 | Gen Electric Plc | Electrical signal mixer circuit |
US6121802A (en) * | 1999-03-02 | 2000-09-19 | Stmicroelectronics, S.R.L. | Method and circuit for generating triangular waveforms opposite in phase |
KR100346701B1 (ko) * | 1999-05-25 | 2002-08-01 | 삼성전자 주식회사 | 레이저 다이오드의 출력 제어 방법 및 이에 적합한 장치 |
FR2870406A1 (fr) * | 2004-05-14 | 2005-11-18 | St Microelectronics Sa | Modulation de charge d'un transporteur |
JP4622423B2 (ja) * | 2004-09-29 | 2011-02-02 | 日本テキサス・インスツルメンツ株式会社 | パルス幅変調信号発生回路 |
US20100054377A1 (en) * | 2008-08-28 | 2010-03-04 | Honeywell International Inc. | Systems and methods for spurious signal reduction in multi-mode digital navigation receivers |
KR101896921B1 (ko) * | 2011-05-17 | 2018-09-12 | 삼성전자주식회사 | 무선 전력 수신기 및 그 제어 방법 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3155838A (en) * | 1960-05-20 | 1964-11-03 | United Aircraft Corp | Pulse-width modulator |
US3080524A (en) * | 1961-01-10 | 1963-03-05 | Bell Telephone Labor Inc | Linear automatic volume control system |
US3115611A (en) * | 1961-09-07 | 1963-12-24 | Nat Company Inc | Pulse power resolving system |
US3262056A (en) * | 1963-05-24 | 1966-07-19 | Winston Res Corp | Variable power level frequency modulation transmitter |
US3506920A (en) * | 1966-02-10 | 1970-04-14 | Gates Radio Co | High efficiency transformer utilizing pulse duration modulation to eliminate audio-rf transformer coupling |
US3440566A (en) * | 1966-02-10 | 1969-04-22 | Gates Radio Co | Pulse duration modulator having trigger circuit utilizing a modified triangular waveform |
US3435378A (en) * | 1966-03-25 | 1969-03-25 | Communications Patents Ltd | Apparatus for generating modulated waves from pulse-type modulating signal |
US3486128A (en) * | 1968-02-07 | 1969-12-23 | Us Army | Power amplifier for amplitude modulated transmitter |
US3585517A (en) * | 1968-05-01 | 1971-06-15 | Westinghouse Electric Corp | High-efficiency power amplifier |
US3551851A (en) * | 1968-05-27 | 1970-12-29 | Westinghouse Electric Corp | Class a-b pulse width modulating amplifiers |
US3644832A (en) * | 1970-09-28 | 1972-02-22 | Gen Electric | Power control circuit |
DE2146690A1 (de) * | 1971-09-17 | 1973-03-22 | Siemens Ag | Schaltung zur genauen amplitudeneinstellung eines senders |
-
1974
- 1974-09-30 US US05/510,827 patent/US3943446A/en not_active Expired - Lifetime
-
1975
- 1975-09-04 NL NL7510433A patent/NL7510433A/xx not_active Application Discontinuation
- 1975-09-11 CA CA235,210A patent/CA1034213A/en not_active Expired
- 1975-09-15 GB GB37809/75A patent/GB1527762A/en not_active Expired
- 1975-09-26 DE DE19752542980 patent/DE2542980A1/de not_active Withdrawn
- 1975-09-29 FR FR7529804A patent/FR2286547A1/fr active Granted
- 1975-09-29 BE BE1006913A patent/BE833930A/xx not_active IP Right Cessation
- 1975-09-30 JP JP11730675A patent/JPS5528612B2/ja not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2831730A1 (de) | 1978-05-13 | 1979-11-22 | Marconi Co Ltd | Modulations-schaltung |
Also Published As
Publication number | Publication date |
---|---|
GB1527762A (en) | 1978-10-11 |
FR2286547A1 (fr) | 1976-04-23 |
JPS5161206A (US06605200-20030812-C00035.png) | 1976-05-27 |
US3943446A (en) | 1976-03-09 |
FR2286547B1 (US06605200-20030812-C00035.png) | 1982-07-02 |
JPS5528612B2 (US06605200-20030812-C00035.png) | 1980-07-29 |
CA1034213A (en) | 1978-07-04 |
BE833930A (fr) | 1976-03-29 |
NL7510433A (nl) | 1976-04-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8141 | Disposal/no request for examination |