| Patents for H03C 1 - Amplitude modulation (2,214) |
|---|
| 09/28/1988 | EP0284152A2 Amplitude modulation apparatus |
| 09/06/1988 | USH525 Device for providing a circuit with resistive and capacitive characteristics where the resistive characteristic is controllable by electromagnetic radiation |
| 08/30/1988 | US4768187 In a radio communication system |
| 08/30/1988 | US4768000 Monolithic double balanced single sideband modulator |
| 08/23/1988 | US4766400 Variable-transconductance four-quadrant Gilbert-type modulator with feedback circuitry in improved NMR transmission |
| 08/02/1988 | US4761798 Baseband phase modulator apparatus employing digital techniques |
| 07/26/1988 | US4760587 Device for transmitting high-frequency pulses in a certain pattern and a radio-navigation system including such a device |
| 07/26/1988 | US4760354 SSB pulse modulator |
| 07/05/1988 | US4755775 Microwave balun for mixers and modulators |
| 06/22/1988 | EP0271703A2 AM radio transmitter |
| 06/22/1988 | CN86100908B Method and apparatus for modulation of single-side band |
| 06/01/1988 | CN87107974A Amplitude-modulated broadcast transmitter |
| 05/24/1988 | US4747161 AM-RF transmitter with compensation for power supply variations |
| 05/17/1988 | US4745566 Angle modulated waveform synthesizer |
| 05/17/1988 | US4745368 Switching amplifier |
| 04/18/1988 | EP0192708A4 Nmr tuning procedure. |
| 04/12/1988 | US4737731 Method and apparatus for reducing distortion in amplifiers |
| 04/12/1988 | CA1235190A1 Polar loop transmitter |
| 03/23/1988 | EP0260378A2 Modulation method |
| 03/15/1988 | CA1234190A1 Am pulse duration modulator |
| 02/24/1988 | EP0256505A1 Power transmitter, in particular a power broadcasting transmitter |
| 02/23/1988 | US4727333 Circuitry for multiplying a PCM signal by a sinusoid |
| 02/09/1988 | US4724405 Modulator |
| 02/02/1988 | US4723318 Active polyphase filters |
| 02/02/1988 | US4723308 AM signal transmitter |
| 01/19/1988 | US4720683 Circuit for preventing retarding field oscillations in electron tubes, especially for a pulse-width modulation stage in transmitters |
| 01/07/1988 | EP0251703A2 Circuitry for multiplying a signal by a periodic waveform |
| 12/08/1987 | CA1230163A1 Polar loop transmitter |
| 11/10/1987 | US4705967 Multifunction floating FET circuit |
| 10/06/1987 | US4698637 Device for pulse modulation automatic control |
| 10/06/1987 | US4698603 RF amplitude modulator/mixer |
| 09/30/1987 | EP0239249A2 RF-AM transmitter with pulse-width modulator |
| 09/23/1987 | EP0237886A1 Method and arrangement for the anode modulation of a transmitter's final stage tube |
| 09/22/1987 | US4696055 RF tuning circuit which provides image frequency rejection |
| 09/09/1987 | EP0236068A2 AM-RF Transmitter with compensation for power supply variations |
| 09/02/1987 | EP0234936A2 AM radio transmitter |
| 08/26/1987 | CN86101090A Amplitude modulation apparatus with floating carrier |
| 08/12/1987 | EP0231541A1 Single side band harmonic frequency converter, in particular for high-frequency receiving and transmitting systems |
| 08/11/1987 | US4686705 Special vestigial sideband signal for use in communication systems |
| 07/28/1987 | US4683446 PRF coherent, pulsed oscillator apparatus |
| 07/28/1987 | US4683439 Digitally driven switching power amplifier system |
| 07/14/1987 | US4680726 Function generator |
| 06/24/1987 | EP0226255A2 Modulator |
| 06/24/1987 | CN86108884A Single side band harmonic frequency converter for high-frequency receiving and transmitting systems |
| 06/16/1987 | US4673887 Digital driver for fixed power amplifier |
| 05/13/1987 | EP0221632A1 Multifunction floating fet circuit |
| 04/21/1987 | US4660222 Special vestigial sideband signal for use in communication systems |
| 04/15/1987 | EP0218152A1 Switching amplifier |
| 04/07/1987 | US4656440 Single-sideband modulator and broadcast transmitter |
| 03/31/1987 | US4654608 Double sideband generation with serrodyne modulators |
| 03/31/1987 | US4654607 Modulation control circuit for an amplitude modulator |
| 03/17/1987 | US4651114 Pulse repetition modulator apparatus |
| 02/24/1987 | US4646359 Method and apparatus for controlling the carrier of an amplitude-modulated transmitter |
| 02/04/1987 | EP0210688A2 Signal transmission system and a transmitter and a receiver for use in the system |
| 01/29/1987 | DE3526913A1 Method for amplitude modulation |
| 01/21/1987 | EP0209178A1 Device for transmitting high-frequency pulses according to a certain shape, and radionavigation system comprising such a device |
| 01/13/1987 | US4637069 Doubly balanced diode mixer comprising a ring modulator each leg of which comprises a high speed conventional diode in series with at least one diode of the "varactor" kind |
| 01/06/1987 | US4635004 Single-sideband generator suitable for integrated circuits |
| 01/06/1987 | US4635003 Oscillator mixer circuit with reaction-tree coupling |
| 01/06/1987 | US4634995 Electronic circuitry utilizing an inerted Darlington amplifier output stage to be operable with a low supply voltage |
| 12/30/1986 | US4633512 Amplitude-modulated transmitter with controlled carrier value |
| 12/16/1986 | US4630315 Polar loop transmitter |
| 11/26/1986 | EP0202985A1 Single sideband radiowave transmitter |
| 10/29/1986 | EP0199389A2 SSB pulse modulator |
| 10/21/1986 | US4618999 Polar loop transmitter |
| 10/14/1986 | US4617536 Amplitude modulation apparatus and method |
| 10/01/1986 | EP0196239A1 Audio frequency signal predistortion apparatus in a pulse width modulation system of an AM radiotransmitter |
| 09/24/1986 | EP0195403A2 Apparatus for the gated modulation of a radio-frequency carrier signal |
| 09/23/1986 | CA1211803A2 A.m. stereo receiver with inverse amplitude modulator |
| 09/10/1986 | EP0194033A2 Angle modulated waveform synthesizer |
| 09/10/1986 | EP0193655A1 Single sideband modulation process, single sideband modulator and radio-transmitter |
| 09/03/1986 | EP0192708A1 Nmr tuning procedure. |
| 08/20/1986 | CN86100908A Method and apparatus for modulation of single-side band and the radio emission |
| 08/13/1986 | EP0190166A1 Rf amplifier with frequency spectrum control. |
| 08/12/1986 | US4605910 AM pulse duration modulator |
| 08/06/1986 | EP0189931A1 amplitude modulator |
| 08/05/1986 | CA1209216A1 Amplitude modulator which forms two phase-shifted pulse trains and combines them |
| 07/23/1986 | EP0188329A2 AM signal transmitter |
| 07/22/1986 | US4602226 Apparatus for the gated modulation of a radio-frequency carrier signal |
| 07/15/1986 | US4600892 RF amplifier with frequency spectrum control |
| 06/25/1986 | EP0185417A2 Active polyphase filters |
| 06/25/1986 | EP0185416A2 Radio receiver/transmitter filters |
| 06/03/1986 | US4593410 Single-sideband transmitter and method for operating this transmitter |
| 06/03/1986 | US4593246 NMR tuning procedure |
| 05/27/1986 | US4591811 Generator for generating an amplitude modulated signal corresponding to a carrier signal modulated by an information signal |
| 05/20/1986 | US4590433 Doubled balanced differential amplifier circuit with low power consumption for FM modulation or demodulation |
| 04/22/1986 | US4584541 Digital modulator with variations of phase and amplitude modulation |
| 03/27/1986 | WO1986001905A1 Nmr tuning procedure |
| 01/21/1986 | US4565978 Integrable oscillator circuit |
| 01/21/1986 | CA1199690A1 Balanced modulator using logic gates |
| 01/16/1986 | WO1986000476A1 Rf amplifier with frequency spectrum control |
| 01/08/1986 | EP0167007A1 Oscillator-mixer circuit |
| 12/24/1985 | US4561111 Method of predistorting a single sideband system |
| 12/10/1985 | US4558283 Circuit for generating a sum or differential frequency signal |
| 11/27/1985 | EP0162278A1 Method for the control of the carrier of an amplitude-modulated transmitter, and circuit arrangement for carrying out the method |
| 10/30/1985 | EP0159524A1 Amplitude-modulated transmitter wih anode-B modulation |
| 10/15/1985 | US4547752 Amplitude modulator with three differential transistor pairs |
| 09/24/1985 | CA1194131A1 Polar loop transmitter |
| 09/10/1985 | US4541120 Transmitter-receiver module |
| 09/10/1985 | US4540957 Amplitude modulator forms two phase-shifted pulse trains and combines them |