| Patents for H03C 1 - Amplitude modulation (2,214) |
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| 05/05/1981 | CA1100616A1 Modulating signal and carrier signal generating circuit |
| 03/17/1981 | US4257122 Apparatus for improving the efficiency of the modulation stage of a transmitter |
| 03/03/1981 | CA1096945A1 Solid state power combiner |
| 02/10/1981 | US4250469 Filter for converting pulse width modulation to amplitude modulation |
| 01/28/1981 | EP0022990A1 Microstrip microwave balun |
| 01/27/1981 | US4247948 Automatic modulation control in transmitter |
| 01/06/1981 | US4243955 Regulated suppressed carrier modulation system |
| 12/09/1980 | CA1091311A1 Power-dividing and modulating arrangement |
| 12/02/1980 | US4237555 Automatic modulation system |
| 11/27/1980 | WO1980002625A1 Generator of electric oscillations |
| 11/18/1980 | CA1089967A1 Radio-frequency oscillator-modulator |
| 11/18/1980 | CA1089940A1 Surface wave modulator |
| 11/12/1980 | EP0018572A1 Semiconductor circuit for the amplitude modulation of a train of periodic alternating-current signals |
| 10/14/1980 | US4228368 Polarity correcting circuit |
| 10/14/1980 | CA1087699A1 Carrier converter comprising a variable impedance circuit pair or at least one balanced diode bridge |
| 10/07/1980 | CA1087257A2 Signal limit detection circuit |
| 09/30/1980 | US4225822 Amplitude modulation circuit for a transmitter |
| 08/05/1980 | US4216431 Integrated circuit for frequency conversion |
| 07/29/1980 | CA1082781A2 Window comparator |
| 06/25/1980 | EP0012657A1 Wideband passive ringmixer and receiver comprising such a mixer |
| 06/10/1980 | US4207525 Carrier control system for suppressed carrier modulators |
| 06/10/1980 | CA1079362A1 Adaptive audio compressor |
| 05/28/1980 | EP0011464A2 Circuit and method for generating modulated oscillations and a modulated oscillatory signal generated by the method |
| 05/27/1980 | US4205241 Quantized modulation systems |
| 04/22/1980 | US4199723 Automatic modulation control apparatus |
| 04/22/1980 | CA1076220A1 Balanced synchronous detector circuit |
| 04/15/1980 | CA1075844A1 Halogen-containing fire retardant additive with improved heat stability |
| 03/11/1980 | US4193033 Quadrature transposition stage |
| 03/04/1980 | CA1073061A1 Split-ring digital phase modulator |
| 02/26/1980 | US4190807 Sampled error phaselock or frequencylock systems |
| 01/29/1980 | US4186346 Amplitude modulated transmitter |
| 01/22/1980 | CA1070396A1 R f oscillator and modulator |
| 01/08/1980 | CA1069588A1 Vestigial-sideband transmission system for synchronous data signals |
| 12/25/1979 | US4180785 Modulator for forming the product of two input signals |
| 11/27/1979 | US4176319 Double sideband transmission system |
| 11/06/1979 | CA1065972A1 Complementary field effect transistor signal multiplier |
| 10/09/1979 | CA1064114A1 Frequency converter |
| 09/25/1979 | CA1063178A1 Modulation and filtering device |
| 08/07/1979 | US4163944 Compensation circuit for an electrical signal mixer |
| 07/24/1979 | CA1059224A1 Device for the amplitude modulation of an electrical signal |
| 07/10/1979 | US4160960 Power-dividing and modulating arrangement |
| 07/10/1979 | US4160959 R.F. modulator for use in T.V. games |
| 06/12/1979 | CA1056468A1 Variable attenuator type double sideband suppressed carrier modulator |
| 05/29/1979 | US4156851 Constant-phase delay network |
| 05/22/1979 | CA1055115A1 Alternating current control circuits |
| 05/01/1979 | US4152671 Oscillator-modulator apparatus and method therefor |
| 05/01/1979 | US4152661 Modulation amplifier |
| 04/10/1979 | US4149123 Attenuator |
| 04/03/1979 | US4147985 Low level modulation system for a radio transmitter |
| 03/27/1979 | CA1051529A1 High frequency modulator circuit |
| 03/06/1979 | US4143383 Controllable impedance attenuator having all connection contacts on one side |
| 03/06/1979 | CA1050120A1 Diode ring mixer |
| 02/27/1979 | US4142162 Low-distortion double sideband suppressed carrier monolithic modulator |
| 02/20/1979 | US4140982 Transistor microstrip oscillator and diode attenuator modulator |
| 01/23/1979 | US4136315 Low and high frequency oscillators having common voltage regulator circuit |
| 01/23/1979 | US4135427 Electronic musical instrument ring modulator employing multiplication of signals |
| 12/26/1978 | US4131850 Single side band radio apparatus |
| 12/26/1978 | CA1045209A1 Fm-am converter |
| 12/19/1978 | CA1044763A1 Narrow bandwidth, cssb transmission system and three-tone generator used therein |
| 10/31/1978 | US4123712 Symmetrical polyphase network |
| 10/24/1978 | US4122415 AM transmitter with an offset voltage to the RF stage to compensate for switching time of the modulators |
| 10/24/1978 | CA1041183A1 Balanced dual output mixer circuit |
| 10/10/1978 | US4119914 Double balanced mixer using single ferrite core |
| 10/03/1978 | US4118677 Pulse width modulating circuit |
| 09/26/1978 | US4116103 Pulse width modulation in a digital tone synthesizer |
| 08/29/1978 | US4110699 Adaptive audio compressor |
| 08/22/1978 | US4109216 Microwave generator |
| 08/15/1978 | US4107630 Pulse-modulated high-frequency transmitter |
| 06/27/1978 | US4097823 Transmitter wherein outputs of a plurality of pulse modulated diode oscillators are combined |
| 06/06/1978 | US4093919 Carrier converter comprising a variable impedance circuit pair or at least one balanced diode bridge |
| 05/09/1978 | US4088967 Split-ring digital phase modulator |
| 05/09/1978 | US4088956 Automatic modulation percentage control for amplitude modulated transmitters |
| 04/25/1978 | US4086536 Single sideband transmitter apparatus |
| 04/18/1978 | US4085389 Amplitude modulation circuit |
| 02/21/1978 | US4075565 Single side-band wave generation system |
| 12/13/1977 | US4063199 Radio frequency pulse width amplitude modulation system |
| 11/15/1977 | US4058771 Double-balanced frequency converter |
| 11/15/1977 | US4058769 Modulation system with carrier control |
| 10/18/1977 | US4054839 Balanced synchronous detector circuit |
| 10/11/1977 | US4052785 Method of making a transformer assembly |
| 10/04/1977 | US4052682 Multiple oscillator modulator circuit |
| 09/27/1977 | US4051439 Short pulse magnetron transmitter |
| 09/20/1977 | US4050070 Programmable microwave modulator |
| 09/06/1977 | US4047127 RF oscillator and modulator having regulated low harmonic output |
| 09/06/1977 | US4047121 RF signal generator |
| 08/09/1977 | US4041244 Composite stereophonic signal generator |
| 08/02/1977 | US4040081 Alternating current control circuits |
| 07/26/1977 | US4038603 Transmitter modulation limiter |
| 06/28/1977 | US4032967 Complementary field effect transistor signal multiplier |
| 06/28/1977 | US4032802 Reduction of intermodulation |
| 03/15/1977 | US4012586 Device for the amplitude modulation of an electrical signal |
| 01/11/1977 | US4003002 Modulation and filtering device |
| 01/04/1977 | US4001729 Fm to am converter |
| 01/04/1977 | US4001706 Single-ended/push-pull converter |
| 11/30/1976 | US3995236 Double sideband modulator |
| 11/16/1976 | US3992674 Balanced dual output mixer circuit |
| 10/12/1976 | US3986146 Double balanced modulator-demodulator |
| 09/28/1976 | US3983487 FM-AM converter |
| 08/10/1976 | US3974460 High frequency modulator, such as an amplitude modulator, including a frequency multiplier |
| 08/03/1976 | US3972259 Production of pulse width modulation tonal effects in a computor organ |