| Patents for H03C 1 - Amplitude modulation (2,214) |
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| 05/16/2001 | EP1099299A1 A modulator |
| 05/09/2001 | EP1097509A1 Vectorial modulator |
| 05/02/2001 | CA2323982A1 Rf amplifier having a dual slope phase modulator |
| 05/01/2001 | US6225864 RF amplifier having a dual slope phase modulator |
| 04/18/2001 | CN1064794C Multiple access up converter/modulator and method |
| 04/10/2001 | US6216100 Method for the simulation of a nonlinear amplifier with envelope memory effect |
| 04/04/2001 | CN1290065A Orthogonal modulator with integrated distributive resistance-capacitance filter |
| 04/04/2001 | CN1290064A Orthogonal modulator with integrated distributive resistance-capacitance filter |
| 03/22/2001 | WO2001020773A1 Millimeter wave modulator and transmitter |
| 03/14/2001 | CN1063300C Quadrature modulator with integrated distributed RC filters |
| 03/08/2001 | WO2001017101A1 Amplitude modulator |
| 03/06/2001 | US6198780 Method and apparatus for symbol timing recovery of a vestigial sideband television signal |
| 02/28/2001 | EP1079574A2 Digitaler Restseitenbandmodulator |
| 02/28/2001 | CN1285686A Vestigial sideband digital modulator |
| 02/28/2001 | CN1285685A Wave-carried signal generator for complex modulator |
| 02/27/2001 | US6194978 Interrupt modulation method and apparatus |
| 02/27/2001 | CA2201352C Multi-channel transceiver having an adaptive antenna array and method |
| 12/27/2000 | EP1063770A2 A transmitter and a modulator therefor |
| 12/26/2000 | US6167247 Local oscillator leak cancellation circuit |
| 12/26/2000 | US6167241 Technique for performing amplitude modulation without cheating side-bands |
| 12/26/2000 | US6167099 Multi-channel digital transceiver and method |
| 12/26/2000 | CA2208453C Balanced modulator |
| 12/20/2000 | EP1060563A1 Method and apparatus for compensating for delays in modulator loops |
| 12/19/2000 | US6163231 Millimeter wave modulator and transmitter |
| 12/13/2000 | CN1276928A Multi-carrrier transmitting apparatus and method |
| 11/29/2000 | EP1055283A2 Phase modulating transmitter |
| 11/23/2000 | WO2000070745A1 Single sideband mixer |
| 11/16/2000 | DE19921921A1 Single-sided band mixer for HF signals has amplifier connected before each mixer to produce first signal; amplifiers have inputs connected via branched line to common signal source |
| 11/14/2000 | US6148320 Multichannel digital signal generation method and apparatus |
| 11/02/2000 | EP1048135A1 Testing in an rf communication system |
| 10/31/2000 | CA2214624C Digital amplitude modulation amplifier and television broadcasting machine |
| 10/25/2000 | CN1271484A Testing in an RF communication system |
| 10/12/2000 | WO2000045503B1 Vestigial sideband generator particularly for digital television |
| 10/11/2000 | CN1269921A Low noise gilbert (GILBERT) multiplier cells and quarature modulators, and related method |
| 10/05/2000 | WO2000059108A1 Method for modulating the amplitude of an antenna signal |
| 09/08/2000 | WO2000052817A2 Method and system for digital transmission using amplitude-modulated transmitters with modulation transformer |
| 09/07/2000 | DE19911437A1 Verfahren und Anordnung für digitale Übertragung mit amplitudenmodulierten Sendern mit Modulationstransformator Method and apparatus for digital transmission with amplitude-modulated transmitters with modulation transformer |
| 09/05/2000 | US6114921 Double-balanced modulator and quadri-phase shift keying device |
| 08/24/2000 | WO2000049710A1 Direct digital vestigial sideband (vsb) modulator |
| 08/23/2000 | CN1264260A Radio equipment including frequence synthesizer |
| 08/03/2000 | WO2000045503A1 Vestigial sideband generator particularly for digital television |
| 08/03/2000 | CA2361010A1 Vestigial sideband generator particularly for digital television |
| 07/25/2000 | CA2050350C Method of compensating for non-linearities in an end amplifier incorporated in a radio transmitter |
| 07/18/2000 | US6091940 Method and system for frequency up-conversion |
| 07/18/2000 | US6091306 Circuit configuration with main and subordinate oscillators |
| 07/12/2000 | CN1054488C 多模式信号处理 Multi-mode signal processing |
| 07/11/2000 | US6087904 Amplitude modulation and amplitude shift keying circuit |
| 07/06/2000 | WO2000039918A1 Analogue modulation method and monolithic integrated circuit with mixer stage comprising non-polarised field-effect transistors |
| 06/28/2000 | EP1014560A1 Radio apparatus including a frequency synthesizer and method for phase and/or frequency modulation in a frequency synthesizer |
| 06/28/2000 | EP1013517A2 System and method for the transmission of data in a security device for a vehicle |
| 06/28/2000 | EP1012964A1 Single side-band modulation system for use in digitally implemented multicarrier transmission systems |
| 06/28/2000 | EP1012963A1 Low noise gilbert multiplier cells and quadrature modulators, and related methods |
| 06/28/2000 | EP1012962A1 Multi-carrier transmitting apparatus and method |
| 06/22/2000 | WO2000036742A2 Phase modulating transmitter |
| 06/14/2000 | CN1256553A New-type modem and its power source controlling method |
| 05/09/2000 | US6061551 Method and system for down-converting electromagnetic signals |
| 05/03/2000 | EP0998024A2 Modulator structure for a transmitter and a mobile station |
| 05/02/2000 | CA2191098C Multiple access up converter/modulator and method |
| 05/02/2000 | CA2174930C Power supply modulator circuit for transmitter |
| 04/27/2000 | WO2000024120A1 Method and system for ensuring reception of a communications signal |
| 04/27/2000 | WO2000024117A1 Method and system for down-converting an electromagnetic signal |
| 04/27/2000 | WO2000024116A1 System and method for frequency up-conversion |
| 04/19/2000 | EP0704117B1 Compensated digital frequency synthesizer |
| 04/12/2000 | CN1051422C Equipment for and method of analog-to-digital conversion and digital-to-analog conversion of voice signal |
| 03/30/2000 | WO2000018002A1 Multi-carrier transmitting apparatus and method |
| 03/22/2000 | CN1248099A Local oscillator leak cancel circuit |
| 03/21/2000 | US6041082 Digital amplitude modulation amplifier and television broadcasting machine |
| 03/14/2000 | US6038428 Power control circuit for transmission apparatus |
| 03/08/2000 | EP0746901A4 Digital signal processor exciter |
| 03/07/2000 | US6034574 Modulation apparatus |
| 02/10/2000 | WO2000007308A1 Testing in an rf communication system |
| 02/03/2000 | WO2000005807A1 A modulator |
| 02/02/2000 | EP0977408A2 ASK modulation apparatus and method |
| 01/30/2000 | CA2279065A1 Ask modulation apparatus and method |
| 01/20/2000 | WO2000003475A1 Vectorial modulator |
| 01/19/2000 | EP0973254A1 Local oscillator leak reduction circuit |
| 12/29/1999 | CN1047896C Power amplifier having nested amplitude modulation controller and phase modulation controller |
| 12/22/1999 | CN1239350A Load regulation technique and its communication method |
| 12/07/1999 | US5998781 Apparatus for millimeter-wave signal generation |
| 11/23/1999 | CA2173641C Switched-inverter modulator |
| 11/09/1999 | US5982446 Video modulator arrangement |
| 10/27/1999 | EP0952664A1 Sub-harmonic modulator |
| 10/26/1999 | US5973576 Mixer for mixing carrier signals and data signals |
| 10/12/1999 | US5966645 Transmitter with low-level modulation and minimal harmonic emissions |
| 09/28/1999 | US5959491 Apparatus and method for noise suppression in a balanced modulating device |
| 09/14/1999 | CA2187967C Balanced modulator |
| 09/07/1999 | US5949297 Balanced modulator |
| 09/07/1999 | US5949296 Power supply modulator circuit for transmitter |
| 08/31/1999 | US5945860 CLM/ECL clock phase shifter with CMOS digital control |
| 08/25/1999 | EP0862816B1 Method and device for removing signal residues in quadrature signal modulator-demodulators |
| 08/17/1999 | US5939951 For processing an input signal to generate a combined signal |
| 08/12/1999 | WO1999040680A1 Method and apparatus for compensating for delays in modulator loops |
| 08/12/1999 | CA2320215A1 Method and apparatus for compensating for delays in modulator loops |
| 06/22/1999 | US5914620 Frequency doubling of a quadrature-amplitude modulated signal using a frequency multiplier |
| 06/15/1999 | US5912927 Multi-channel transmitter having an adaptive antenna array |
| 06/15/1999 | CA2122582C Electric power distribution system for active cathodic protection of reinforced concrete constructions |
| 06/01/1999 | US5909153 Method and apparatus for compensating for delays in modulator loops |
| 05/18/1999 | US5905388 Frequency synthesizer |
| 04/20/1999 | US5896421 Use of low pass filter and equalizer for noise reduction in direct up-conversion schemes |
| 04/20/1999 | US5896182 Amplitude modulator |