| Patents for H03D 7 - Transference of modulation from one carrier to another, e.g. frequency-changing (7,673) |
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| 09/02/1987 | EP0234103A2 Tuner circuit |
| 09/01/1987 | US4691379 Mixer circuit |
| 08/27/1987 | WO1987005170A1 Method and device for converting the frequency of frequency modulated signals |
| 08/25/1987 | US4689806 In a communications receiver |
| 08/19/1987 | EP0232560A1 UHF amplifier-mixer circuit |
| 08/18/1987 | US4688005 Self-oscillating mixer with Darlington transistors |
| 08/12/1987 | EP0231541A1 Single side band harmonic frequency converter, in particular for high-frequency receiving and transmitting systems |
| 08/04/1987 | US4684833 Mixer stage |
| 08/04/1987 | CA1225127A1 Millimeter wave image guide band reject filter |
| 07/28/1987 | US4683499 Method for generating a pixel synchronizing signal in a picture input scanning apparatus and a reproduction record scanning apparatus and apparatus therefor |
| 07/22/1987 | CN86205568U U-v converter in common-use television antenna system |
| 07/21/1987 | US4682060 Noise suppression in an I-F substitution loop |
| 07/21/1987 | CA1224529A1 Shf receiver |
| 07/07/1987 | US4679249 Waveguide-to-microstrip line coupling arrangement and a frequency converter having the coupling arrangement |
| 06/30/1987 | US4677693 Frequency conversion circuit |
| 06/30/1987 | US4677692 Frequency conversion apparatus |
| 06/30/1987 | US4677691 Microwave receiver |
| 06/30/1987 | US4677690 Baseband demodulator for FM and/or AM signals |
| 06/24/1987 | CN86108884A Single side band harmonic frequency converter for high-frequency receiving and transmitting systems |
| 06/23/1987 | US4675911 Monolithic microwave integrated circuit broadband mixer |
| 05/27/1987 | EP0223287A1 Semiconductor device for use as a mixer |
| 05/20/1987 | CN86104796A Digital mixing apparatus |
| 05/19/1987 | US4667342 Tunable receiver input circuit |
| 05/13/1987 | EP0221632A1 Multifunction floating fet circuit |
| 05/12/1987 | CA1221741A1 Receiver systems for eliminating self-quieting spurious responses |
| 05/07/1987 | WO1987002842A1 Frequency doubling oscillator and mixer circuit |
| 05/06/1987 | EP0220914A1 Balanced oscillator and heterodyne circuit incorporating same |
| 05/05/1987 | US4663594 Electronic phase shifter circuit and method |
| 04/28/1987 | US4662000 Frequency conversion circuits |
| 04/28/1987 | US4661998 Double superheterodyne tuner |
| 04/28/1987 | US4661997 Mixer for use in a microwave system |
| 04/28/1987 | US4661995 Multi-superheterodyne receiver |
| 04/22/1987 | EP0219366A1 High order harmonic generator |
| 04/22/1987 | EP0219338A2 Digital color signal processing circuit |
| 04/22/1987 | EP0218913A1 Digital difference-frequency mixer |
| 04/14/1987 | US4658440 Single balanced self-oscillating dual gate FET mixer |
| 04/14/1987 | CA1220528A1 Microwave mixer |
| 04/08/1987 | EP0216803A1 Digital zero-if selectivity section. |
| 04/02/1987 | DE3533104A1 Frequency divider with a mixing stage |
| 04/01/1987 | CN86102114A Tissue signature tracking transceiver having upconverted if amplification |
| 03/31/1987 | US4654887 Radio frequency mixer |
| 03/31/1987 | US4654886 Local oscillator null circuit and method |
| 03/31/1987 | US4654607 Modulation control circuit for an amplitude modulator |
| 03/31/1987 | CA1219918A1 Microwave receiving apparatus using a wave-guide filter |
| 03/24/1987 | US4653117 Dual conversion FM receiver using phase locked direct conversion IF |
| 03/18/1987 | EP0214491A2 Battery or accumulator powered radio receiver |
| 03/17/1987 | US4651344 VHF-UHF mixer having a balun |
| 03/11/1987 | EP0213562A2 Signal-processing circuit having a field-effect MOSFET and bipolar transistors |
| 03/03/1987 | US4648129 Frequency converter |
| 03/03/1987 | US4647875 Ultrahigh frequency active filter |
| 03/03/1987 | US4647847 Method and apparatus for eliminating harmonic skip |
| 03/03/1987 | CA1218707A1 Double-balanced mixer circuit |
| 02/24/1987 | CA1218416A1 R.f. circuit arrangement |
| 02/17/1987 | US4644561 Modem for RF subscriber telephone system |
| 02/10/1987 | US4642573 Phase locked loop circuit for demodulating suppressed carrier signals |
| 02/03/1987 | US4641369 Local oscillator and mixer assembly |
| 01/28/1987 | CN85105670A Frequency conversion apparatus |
| 01/27/1987 | CA1217236A1 Diode mixer with bias control and its use |
| 01/13/1987 | US4637070 UHF mixing circuit having π configured impedance converter |
| 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 |
| 01/13/1987 | US4637068 Ring hybrid mixing |
| 01/13/1987 | US4636663 Double-balanced mixer circuit |
| 01/13/1987 | CA1216666A1 Double conversion tuner for broadcast and cable television channels |
| 01/07/1987 | EP0207523A2 Radio-frequency signal processing unit |
| 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 | US4633520 Prescaler input circuit |
| 12/30/1986 | US4633188 Mixer/amplifier circuit |
| 12/30/1986 | US4633173 Apparatus for measuring a signal level |
| 12/23/1986 | US4631500 Microwave frequency divider having regenerative oscillation |
| 12/17/1986 | CN86100014A Modem for rf subscriber telephone system |
| 12/16/1986 | US4630082 Semiconductor device with multi-electrode construction equivalent to variable capacitance diode |
| 12/10/1986 | EP0204570A2 Digital mixing apparatus |
| 12/10/1986 | EP0204120A2 Monolithic distributed mixer |
| 12/03/1986 | EP0203895A2 Signal mixer for microwave radio systems |
| 12/02/1986 | US4627104 Mixer |
| 12/02/1986 | US4627100 Wide band radio receiver |
| 11/20/1986 | EP0201986A2 Intermodulation suppressing circuit |
| 11/19/1986 | CN85103670A Anti-interference method for mirrior frequency by mirrior-frequency rejector |
| 11/12/1986 | EP0201092A2 Radio receiver |
| 10/22/1986 | EP0198162A1 Frequency converter used for a receiver which receives signals of a UHF band or a microwave band |
| 10/21/1986 | US4619000 CATV converter having improved tuning circuits |
| 10/15/1986 | EP0197708A2 Digital zero IF circuit |
| 10/09/1986 | WO1986005936A1 Digital zero-if selectivity section |
| 10/07/1986 | CA1212457A1 Frequency converter, especially catv converter |
| 10/01/1986 | EP0196098A2 Broadband Amplifier/Mixer |
| 10/01/1986 | CN86101766A Digital zero-if selectivity section |
| 09/30/1986 | US4614911 Balanced modulator circuit |
| 09/23/1986 | CA1211834A1 Low noise catv converter |
| 09/17/1986 | EP0194309A1 Catv converter having improved tuning circuits |
| 09/10/1986 | EP0193899A1 Tissue signature tracking transceiver having upconverted if amplification |
| 09/10/1986 | EP0193849A2 Single balanced planar mixer |
| 09/02/1986 | US4610032 Sis mixer having thin film wrap around edge contact |
| 08/26/1986 | US4608710 Apparatus for receiving satellite broadcasts |
| 08/26/1986 | US4608539 FM detector with injection locked divider input circuit |
| 08/26/1986 | CA1210524A1 Use of a field effect transistor having a dual gate and an intermediate ohmic island for the rejection of a frequency band |
| 08/19/1986 | US4607394 Single balanced planar mixer |
| 08/19/1986 | US4607229 Phase shifter |
| 08/19/1986 | CA1210094A1 Crystal oscillator circuit with feedback control |
| 08/13/1986 | EP0190902A2 Mixer circuit |