| Patents for H03D 7 - Transference of modulation from one carrier to another, e.g. frequency-changing (7,673) |
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| 08/24/1982 | CA1130484A1 Impedance matched tuning device having image trapping circuit |
| 08/11/1982 | EP0057480A1 Oscillator-mixer device stabilized by a dielectric resonator |
| 08/10/1982 | US4344188 Balanced modulator |
| 07/20/1982 | US4340975 Microwave mixing circuit and a VHF-UHF tuner having the mixing circuit |
| 07/20/1982 | CA1128135A1 Microwave mixing circuit |
| 06/08/1982 | US4334324 Complementary symmetry FET frequency converter circuits |
| 05/18/1982 | US4330868 Balun coupled microwave frequency converter |
| 05/12/1982 | EP0051179A1 Oscillation circuit which may take the form of an integrated circuit |
| 04/27/1982 | US4327445 Frequency converter |
| 03/23/1982 | US4321549 Switching quadrature detector |
| 03/17/1982 | EP0047686A1 Hybrid microwave mixer |
| 03/16/1982 | US4320531 Time shared frequency conversion system |
| 02/23/1982 | US4317231 Microwave circuit for a parametric upper sideband down converter |
| 02/23/1982 | US4317230 Broad-band passive ring mixer |
| 02/09/1982 | US4315333 Circuit arrangement for a wide-band VHF-UHF television double superheterodyne receiver |
| 02/09/1982 | CA1118050A1 Integrated mixer arrangement |
| 01/27/1982 | EP0044774A1 Hybrid up-converter |
| 01/26/1982 | US4313222 H-F Portion of TV receiver |
| 01/26/1982 | US4313221 Mixer/oscillator circuit |
| 01/26/1982 | CA1117189A1 Balanced active mixer circuit |
| 01/12/1982 | CA1116326A1 Tuner with peaking and trap circuits |
| 12/29/1981 | US4308473 Polyphase coded mixer |
| 12/15/1981 | US4306312 Symmetric mixer for millimeter waves and a receiver using such a mixer |
| 12/15/1981 | US4306311 Double-balanced mixer circuit |
| 11/04/1981 | EP0039275A1 Combined synthesis and demodulation device for a receiver of frequency-modulated waves, and receiver comprising it |
| 11/03/1981 | US4298990 Frequency converter of electromagnetic radiation in millimeter and submillimeter wavelength range |
| 10/27/1981 | CA1111500A1 Self-oscillation mixer circuits |
| 10/13/1981 | US4295105 Switched-capacitor modulator |
| 10/13/1981 | US4295102 Surface acoustic wave sensor sensing circuits |
| 10/06/1981 | US4293956 Double-balanced mixer |
| 10/06/1981 | US4293825 Frequency-shifting systems for frequency modulated signals |
| 10/06/1981 | CA1110356A1 Mesfet device surface-wave-device channel selector |
| 09/22/1981 | US4291415 Microwave integrated circuit double balanced mixer |
| 09/22/1981 | US4291277 Adaptive predistortion technique for linearizing a power amplifier for digital data systems |
| 08/19/1981 | EP0033920A1 Mixing circuit for UHF/VHF tuner employing a dual-gate MOS field-effect transistor |
| 08/18/1981 | CA1107404A1 Device for mixing signals |
| 07/21/1981 | CA1105572A1 Frequency converting filter |
| 06/30/1981 | US4276655 Integrated circuit planar high frequency mixer |
| 06/25/1981 | WO1981001762A1 Quadrature stage frequency converter |
| 05/26/1981 | US4270224 Microwave down converter |
| 05/19/1981 | US4268916 Frequency converting circuit |
| 05/12/1981 | US4267605 Interference eliminator in communication receiver |
| 04/28/1981 | US4264981 Circuit arrangement for compensating the change in input capacitance at a first gate electrode of a dual-gate MOS field-effect transistor |
| 04/28/1981 | US4264980 Self-oscillating converter for ultrashort wave radio receivers |
| 04/28/1981 | US4264975 Receiver for frequency modulated signals having two quadrature channels |
| 04/14/1981 | US4262361 Variable bandwidth filtering and frequency converting system |
| 03/31/1981 | US4259743 Transmit/receive microwave circuit |
| 03/11/1981 | EP0024763A1 Converter circuit for television signals |
| 03/10/1981 | US4255730 Microwave integrated circuit device |
| 02/24/1981 | US4253196 Frequency converter, as for first detector of heterodyne radio receiver |
| 02/03/1981 | US4249263 Mixer circuit |
| 01/20/1981 | US4246539 Frequency synthesizing system for AM·SSB transceiver |
| 01/13/1981 | US4245356 Frequency translator |
| 01/13/1981 | CA1093645A1 Radio receiver employing premixing and digital display |
| 01/07/1981 | EP0021426A1 Microwave and millimeter wave mixer |
| 12/30/1980 | CA1092733A1 Multi-band tuner |
| 12/16/1980 | US4240052 Balun filter apparatus |
| 11/25/1980 | US4236252 Double-converting FM tuner |
| 11/18/1980 | US4234966 Double balanced diode mixer with d.c. response |
| 11/04/1980 | US4232191 FM Receiving device |
| 11/04/1980 | CA1089028A1 Filter and demodulation arrangement |
| 10/28/1980 | US4230956 Doubly balanced mixer with optimized dynamic range |
| 10/14/1980 | US4228543 Programmable television receiver controllers |
| 10/01/1980 | EP0016695A1 Symmetrical mixer for millimeter waves and receiver using such a mixer |
| 09/30/1980 | US4225974 Double super-heterodyne receiver |
| 09/17/1980 | EP0015838A1 Wide-band hyperfrequency mixer |
| 08/26/1980 | US4219779 Self-oscillating mixer circuit |
| 08/05/1980 | US4216431 Integrated circuit for frequency conversion |
| 07/22/1980 | US4214218 Impedance matched tuning device having image trapping circuit |
| 07/22/1980 | US4214217 Electronic tuning circuit having image trapping element |
| 07/22/1980 | US4214212 Tuner device for a television receiver |
| 07/08/1980 | US4211977 Mixer circuit arrangement |
| 07/08/1980 | US4211975 Local signal generation arrangement |
| 06/25/1980 | EP0012657A1 Wideband passive ringmixer and receiver comprising such a mixer |
| 06/03/1980 | US4206412 Trap circuit for blocking spurious signals from a T.V. intermediate frequency amplifier |
| 05/20/1980 | CA1078023A1 Bias optimized fet mixer for varactor tuner |
| 04/15/1980 | US4198604 Heterodyne phase lock system |
| 04/15/1980 | CA1075774A1 Doubling mixer |
| 03/25/1980 | CA1074402A1 Sideband detector |
| 03/11/1980 | US4193036 Balanced active mixer circuit |
| 02/12/1980 | US4188584 Mixer |
| 02/05/1980 | US4187473 Electronic phase locked loop circuit |
| 01/29/1980 | US4186352 Signal converter apparatus |
| 01/15/1980 | US4184120 Mixing circuit |
| 01/09/1980 | EP0006760A1 Balanced active mixer circuit |
| 01/08/1980 | CA1069629A1 Multi-band tuner with fixed broadband input filters |
| 01/01/1980 | CA1069181A Radio receiver with plural converters and frequency control |
| 11/27/1979 | CA1067153A1 Plural band, single/double conversion radio receiver |
| 11/20/1979 | US4175254 Selectively tunable heterodyne receiver |
| 10/31/1979 | EP0005127A2 Improvement in systems of frequency translation of frequency-modulated signals |
| 10/30/1979 | CA1065410A1 Fm discriminator |
| 10/16/1979 | US4171515 Mixer termination for flat frequency response |
| 10/09/1979 | CA1064114A1 Frequency converter |
| 10/09/1979 | CA1064113A1 Combination waveguide and stripline down converter |
| 09/25/1979 | CA1063190A1 Frequency combining circuit |
| 08/21/1979 | CA1060956A1 Yig tuned mixer |
| 07/24/1979 | US4162452 Channel selection for a television receiver having low-gain high frequency RF-IF section |
| 07/24/1979 | US4162451 MESFET-device surface-wave-device channel selector |
| 07/24/1979 | US4162446 Transceiver with only one reference frequency |
| 07/17/1979 | US4161697 Automatically clarifying radio receiver |