| Patents for H03D 7 - Transference of modulation from one carrier to another, e.g. frequency-changing (7,673) |
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| 10/13/1993 | EP0565299A1 Double-balanced active mixer with single-ended-to-differential voltage-current conversion circuits |
| 10/12/1993 | US5252866 Frequency mixing circuit |
| 09/28/1993 | US5249203 Phase and gain error control system for use in an i/q direct conversion receiver |
| 09/22/1993 | EP0561559A1 Electrically-and-magnetically-coupled, batteryless, portable frequency divider |
| 09/15/1993 | EP0560228A1 Mixer circuit |
| 09/12/1993 | CA2091103A1 Mixer circuit |
| 09/08/1993 | EP0559102A1 Frequency converter |
| 09/01/1993 | EP0557741A1 HF mixer stage in common base |
| 08/31/1993 | US5241702 D.c. offset compensation in a radio receiver |
| 08/31/1993 | US5241298 Electrically-and-magnetically-coupled, batteryless, portable, frequency divider |
| 08/31/1993 | US5241228 UHF transistor mixer circuit |
| 08/18/1993 | EP0555689A2 Arrangement for downconverting microwave signals |
| 08/18/1993 | CN1075386A Arrangement for downconverting microwave signals |
| 08/12/1993 | DE4203206A1 Mixer for input and LO signals - filters at least part of mixer prods. by matching to transformer electric line lengths |
| 08/05/1993 | WO1993015560A1 Balanced mixer circuit |
| 08/03/1993 | US5233311 Differential amplifier and oscillator mixer comprising said amplifier |
| 07/22/1993 | WO1993014578A1 Radio receiver for forming a baseband signal of time-varying frequencies |
| 07/21/1993 | EP0551857A2 Mixer circuit using pulse-doped GaAs MESFET |
| 07/20/1993 | US5230099 System for controlling phase and gain errors in an i/q direct conversion receiver |
| 07/20/1993 | US5230097 Offset frequency converter for phase/amplitude data measurement receivers |
| 07/20/1993 | US5230011 Receiver |
| 07/15/1993 | CA2086981A1 Mixer circuit using pulse-doped gaas mesfet |
| 07/06/1993 | CA1319957C2 Subscriber unit for wireless digital telephone system |
| 06/30/1993 | EP0549411A1 Frequency converter and method therefor |
| 06/30/1993 | EP0549296A1 R.F. Mixer |
| 06/30/1993 | EP0549043A1 Integrated circuit comprising an amplifier with variable gain |
| 06/30/1993 | EP0548982A2 Non-coherent PSK demodulator using delaye detection |
| 06/24/1993 | DE4213178A1 Double balanced diode mixer for HF range - has symmetrical stripline transducers coupled on either side of diode bridge with centre tap-off terminal |
| 06/23/1993 | EP0547782A1 Diode mixer |
| 06/22/1993 | US5222253 Transient suppression circuit for a time domain duplex transceiver |
| 06/22/1993 | US5222016 Frequency converter |
| 06/16/1993 | EP0546719A1 I/Q modulator and demodulator |
| 06/16/1993 | EP0546322A1 Quadrature modulator |
| 06/16/1993 | EP0545992A1 Transient suppression circuit for a time domain duplex transceiver |
| 06/15/1993 | US5220688 Frequency translating circuit with multiple stages using common local oscillator |
| 06/14/1993 | WO1993012603A1 Frequency translation apparatus and method |
| 06/09/1993 | EP0545342A1 Superheterodyne receiver |
| 05/26/1993 | EP0543431A1 Self-oscillating mixer circuits, and FMCW radar |
| 05/26/1993 | CN1021002C Channel frequency generator for use with multi-frequency output generator |
| 05/25/1993 | US5214796 Image separation mixer |
| 05/25/1993 | US5214397 Modulator using low-pass filter as delay element |
| 05/19/1993 | EP0519015A4 Offset frequency converter for phase/amplitude data measurement receivers |
| 05/18/1993 | US5212835 Frequency-conversion mixer |
| 05/18/1993 | US5212824 Mixer for frequency converting both ground and satellite broadcasting signals |
| 05/12/1993 | EP0541305A1 A method to generate different frequency signals in a digital radio telephone |
| 05/12/1993 | EP0541031A1 Signal transmitting and receiving apparatus |
| 05/11/1993 | US5210504 Semiconductor device for tv tuner and tv tuner using the same |
| 05/06/1993 | CA2082099A1 Method to generate frequencies in a digital radiotelephone operating on two different frequency bands |
| 04/28/1993 | EP0539133A1 A transformer |
| 04/21/1993 | EP0537750A1 Quadrature modulation and demodulation circuit |
| 04/21/1993 | EP0302100B1 Improved phase lock loop |
| 04/20/1993 | US5204983 Dual conversion reflex receiver |
| 04/20/1993 | US5204972 Arrangement for compensating for temperature dependent performance characteristics of surface acoustic wave filter |
| 04/15/1993 | WO1993007676A1 Method for digitally demodulating a composite signal |
| 04/13/1993 | US5203032 Station selecting apparatus |
| 04/07/1993 | EP0535800A2 General-purpose synthesizer for a radio apparatus |
| 04/06/1993 | US5201064 Multiple-line superheterodyne transmission and reception device |
| 04/06/1993 | US5200826 TV signal receiving double conversion television tuner system having automatic gain control provisions |
| 04/01/1993 | WO1993006654A1 High frequency converter |
| 03/31/1993 | EP0534278A1 High frequency converter |
| 03/31/1993 | EP0216803B1 Digital zero-if selectivity section |
| 03/24/1993 | EP0533230A1 Differential amplifier and mixer oscillator incorporating the same |
| 03/23/1993 | US5196742 Low voltage differential circuit |
| 03/18/1993 | WO1993005583A1 An integrated circuit including a surface acoustic wave transformer and a balanced mixer |
| 03/18/1993 | DE4130357A1 Active mixer circuit for HF signals - uses counter clock current control in series with active mixer. |
| 03/03/1993 | EP0528848A1 Frequency converter for a radio communications system. |
| 03/02/1993 | CA1314080C Method and apparatus for quadrature modulation |
| 02/18/1993 | DE4126774A1 Converter for Astra satellite signal reception - selects two local oscillator frequencies so that second or third order mixing products fall between channels |
| 02/16/1993 | CA1313693C Tuned oscillator utilizing thin film ferromagnetic resonator |
| 02/02/1993 | US5184136 Pulse radar and components therefor |
| 02/02/1993 | US5184084 Double band frequency converting system |
| 01/21/1993 | DE4219357A1 Digitaler empfaenger fuer mehrere simulananwender und digitales empfangsverfahren Digital empfaenger for several simulananwender and digital reception method |
| 01/20/1993 | EP0523938A1 A radio receiver |
| 01/13/1993 | EP0522525A1 Process for compensation of AM/PM distortion of a transmitter by modulation of the local oscillator phase, and associated compensation circuit |
| 01/13/1993 | CN1068004A Device for modulator |
| 01/12/1993 | US5179732 Mixer having balun mounted to a support block |
| 01/12/1993 | US5179731 Frequency conversion circuit |
| 01/12/1993 | US5179730 Selectivity system for a direct conversion receiver |
| 01/12/1993 | US5179729 Tuner station selecting apparatus |
| 01/12/1993 | US5179728 Spurious product and local oscillator radiation suppression system for use in superheterodyne radio receivers |
| 01/07/1993 | WO1993000738A1 Arrangement for a modulator |
| 01/07/1993 | EP0521403A1 Radio receiver capable of suppressing a frequency drift in an intermediate frequency |
| 01/07/1993 | EP0521238A1 Frequency synthesizer circuit for a transceiver |
| 01/07/1993 | DE4121027A1 Anordnung fuer einen video- und tonmodulator Arrangement for a video and tonmodulator |
| 01/05/1993 | US5177741 Subscriber unit for wireless digital telephone system |
| 12/29/1992 | US5175885 CRT update wideband double balanced mixer |
| 12/23/1992 | EP0519015A1 Offset frequency converter for phase/amplitude data measurement receivers |
| 12/16/1992 | EP0517977A1 Pulse radar and components therefor |
| 12/15/1992 | US5172394 Method for reducing the content of spurious signals in the output signals of a mixer, and mixer for carrying out the method |
| 12/15/1992 | US5172079 Balanced modulator designed for low supply voltage |
| 12/15/1992 | US5172070 Apparatus for digitally demodulating a narrow band modulated signal |
| 12/10/1992 | DE4205486A1 Low voltage balanced mixer with parallel differential amplifiers - has third pair of transistors in parallel instead of cascade connection and with separate current sources |
| 12/02/1992 | CN1019346B Waveguide-type fet mixer |
| 12/01/1992 | US5168507 For a wireless digital telephone network |
| 11/25/1992 | EP0514655A1 Semiconductor device for TV tuner and TV tuner using the same |
| 11/24/1992 | US5166645 For sustaining the vibration and providing a mixed frequency output |
| 11/04/1992 | WO1992020144A1 Digital frequency synthesizer having afc and modulation applied to frequency divider |
| 11/04/1992 | EP0511604A2 Image recovery mixer |
| 11/04/1992 | EP0323996B1 Oscillator network and quadrature network for radio receiver |
| 10/27/1992 | US5159710 Zero IF receiver employing, in quadrature related signal paths, amplifiers having substantially sinh-1 transfer characteristics |