| Patents for H03B 23 - Generation of oscillations periodically swept over a predetermined frequency range (246) |
|---|
| 07/17/1997 | WO1997025773A1 Method and device for modulating the frequency of a high-frequency signal |
| 07/17/1997 | DE19601013A1 Verfahren und Anordnung zur Frequenzmodulation eines hochfrequenten Signals Method and system for frequency modulation of a high-frequency signal |
| 06/24/1997 | US5642081 FMCW VCO closed loop linearizer |
| 06/24/1997 | US5642066 Linear ramp generator having two voltage controlled current sources |
| 04/16/1997 | CN1147705A Nonradiative dielectric line apparatus and instrument for measuring characteristics of circuit board |
| 03/11/1997 | US5610955 Circuit for generating a spread spectrum clock |
| 01/08/1997 | EP0752734A1 Nonradiative dielectric wave guide apparatus and instrument for measuring characteristics of a circuit board |
| 11/20/1996 | EP0743746A2 Digitally synchronized sweep signal source |
| 09/17/1996 | US5557560 Apparatus and method for pulse compression and pulse generation |
| 09/17/1996 | US5557241 Linear chirp generation using VCO tuning with polynomial predistortion |
| 08/01/1996 | WO1996023232A1 Spectrum analyzer |
| 06/26/1996 | EP0718979A2 Oscillator |
| 05/28/1996 | US5521532 Digital synthesizer controlled microwave frequency signal source |
| 08/08/1995 | US5440275 Marker sweep linearization system and method |
| 06/27/1995 | US5428836 Radio receiver for forming a baseband signal of time-varying frequencies |
| 06/27/1995 | US5428361 Large time-bandwidth chirp pulse generator |
| 01/03/1995 | US5379001 Closed loop linearizer for ramp modulated VCO |
| 10/12/1994 | EP0619050A1 Apparatus and method for pulse compression and pulse generation |
| 10/05/1994 | EP0618671A1 Arrangement for generating a continuous frequency sweep |
| 09/13/1994 | US5347176 Analog ramp generator with digital correction |
| 05/10/1994 | US5311193 Digital chirp generator |
| 04/12/1994 | US5303259 Frequency-hopped electronic signal transmitter |
| 01/26/1994 | EP0580461A1 Apparatus for the conversion of an electrical value in a frequency having the possibility to autocalibrate the conversion |
| 01/18/1994 | US5280290 Self-oscillating mixer circuits, and FMCW radar |
| 08/17/1993 | US5237291 Microwave frequency synthesizer having selectable oscillator sources and output power control |
| 07/22/1993 | WO1993014578A1 Radio receiver for forming a baseband signal of time-varying frequencies |
| 07/20/1993 | US5230011 Receiver |
| 05/26/1993 | EP0543431A1 Self-oscillating mixer circuits, and FMCW radar |
| 04/29/1993 | WO1993008643A1 Apparatus and method for pulse compression and pulse generation |
| 02/24/1993 | EP0528565A2 Digital chirp generator systems |
| 02/04/1993 | DE4222105A1 Swept RF and microwave frequency synthesised source |
| 01/27/1993 | EP0524382A2 Optical oscillator sweeper |
| 12/29/1992 | US5175509 Frequency control circuit for swept frequency oscillator |
| 12/23/1992 | EP0519601A1 Microwave synthesisers |
| 12/15/1992 | US5172123 Frequency feedback linearizer |
| 12/10/1992 | WO1992022130A1 Improved signal generator and testing apparatus |
| 12/10/1992 | WO1992022129A1 Improved signal generator and testing apparatus |
| 12/10/1992 | WO1992022128A1 Improved signal generator and testing apparatus |
| 09/29/1992 | US5151661 Direct digital FM waveform generator for radar systems |
| 09/23/1992 | EP0505121A2 Frequency control circuitry |
| 08/12/1992 | EP0498321A1 Method and device for producing a high frequency modulated electric signal |
| 07/14/1992 | US5130670 Phase-locking circuit for swept synthesized source preferably having stability enhancement circuit |
| 05/20/1992 | EP0486095A1 Digital receiver |
| 04/01/1992 | EP0478264A1 Digital chirp generator |
| 03/27/1992 | CA2052158A1 Digital chirp generator |
| 01/07/1992 | US5079522 Variable frequency signal generator |
| 11/05/1991 | US5063354 Frequency synthesizing device |
| 10/02/1991 | CN1055091A Method and circuit for controlling frequency of electronic inverter |
| 09/18/1991 | EP0446527A2 Method and circuit for controlling the frequency of an electronic inverter |
| 09/13/1991 | CA2036145A1 Method and circuit for controlling the frequency of an electronic inverter |
| 09/10/1991 | US5048065 Method and circuit for controlling the frequency of an electronic inverter |
| 08/13/1991 | US5039955 Circuit for generating a stable control signal |
| 07/09/1991 | US5030891 Photoelectric switch |
| 07/02/1991 | US5028886 Swept frequency slope correction system for synthesized sweeper |
| 06/13/1991 | WO1991008615A1 Method and apparatus for generating a composite and pulse shaped frequency sweep signal |
| 06/13/1991 | WO1991008614A1 Device generating a frequency modulated signal of the 'ramp signal' type using a surface wave dispersive filter generation |
| 06/11/1991 | US5023571 Digitally-synchronized sweep signal source |
| 05/14/1991 | US5016202 Interpolated swept parameter system for synthesized sweeper |
| 04/24/1991 | EP0423941A2 Variable frequency signal generator |
| 04/16/1991 | US5008845 Method and apparatus for generating a chirp signal |
| 04/03/1991 | EP0420082A2 Digitally synchronized sweep signal source |
| 04/02/1991 | US5005018 (U) modulator to provide a continuous stepped frequency signal format |
| 03/05/1991 | US4998217 Sweep generator linearization system and method |
| 02/20/1991 | EP0413404A2 Tunable oscillator |
| 01/09/1991 | EP0406949A1 Oscillator circuit |
| 11/15/1990 | DE3917510C1 Digital valve corrector for start and/or stop voltages of wobbulator - modulates output frequency with frequency raster generating equidistant frequency marks |
| 07/24/1990 | US4943779 Digital sweep generator |
| 07/04/1990 | EP0375880A1 Frequency synthesis device |
| 06/06/1990 | EP0371478A2 Photoelectric switch |
| 06/05/1990 | US4931749 Phase locked loop sweep frequency synthesizer |
| 03/13/1990 | US4907863 Digital frequency synthesizer for use with precision AO scanning and positioning |
| 02/27/1990 | US4904956 Linear digital frequency sweep synthesizer |
| 09/26/1989 | US4870366 Signal generator with programmable variable frequency |
| 06/13/1989 | US4839583 Signal analyzer apparatus with analog partial sweep function |
| 05/31/1989 | EP0318114A2 Frequency synthesizer |
| 01/04/1989 | EP0297589A1 Signal analyzer apparatus with analog partial sweep function |
| 11/08/1988 | US4783632 Multi-arm frequency sweep generator |
| 10/12/1988 | EP0286623A2 Circuit arrangement for the acquisition of chirp-modulated signals, especially for the acquisition of chirp-modulated ultrasonic signals |
| 06/21/1988 | CA1238376A1 Apparatus for compensating non-linearities in frequency-modulated signal |
| 06/21/1988 | CA1238365A1 Device for generating a frequency modulated signal |
| 06/01/1988 | CN87204508U Test signal generator for tape recorders |
| 03/22/1988 | US4733234 Remote calibrated power source system and method |
| 01/07/1988 | EP0251908A1 Programmable variable-frequency signal generator |
| 10/21/1987 | EP0241742A2 Remote calibrated power source system and method |
| 07/07/1987 | US4679161 Calibrated overlapping frequency sweep |
| 05/19/1987 | US4667151 Calibrated radio frequency sweep |
| 04/21/1987 | US4659999 Direct frequency synthesizer which is step-wise variable and has phase continuity and phase reproducibility when switching frequencies |
| 03/03/1987 | US4647873 Adaptive linear FM sweep corrective system |
| 07/29/1986 | US4603305 Apparatus and method for sweep oscillator calibration |
| 05/20/1986 | US4590445 Device for generating a frequency modulated signal |
| 12/24/1985 | US4560960 Digital frequency synthesizer for generating a frequency-modulated signal and radio frequency apparatus including such a device |
| 10/08/1985 | US4546328 PLL Swept frequency generator with programmable sweep rate |
| 08/06/1985 | US4533866 Circuit for automatically setting a predetermined frequency component of the sweep oscillator of a spectrum analyzer to a prescribed point of the frequency coordinates of a display device |
| 05/08/1985 | EP0140579A1 Signal processing apparatus |
| 04/23/1985 | US4513256 Swept frequency signal generator |
| 02/12/1985 | US4499435 System for linearizing sweep of voltage controlled oscillator |
| 01/02/1985 | EP0130112A1 Device for the generation of a frequency-modulated signal |
| 11/13/1984 | US4482872 Swept frequency oscillators having time constant-controlled signal level detector |
| 10/30/1984 | US4480232 Method and apparatus for digital automatic frequency control of chirped oscillator |
| 09/11/1984 | CA1174295A1 Sweep control circuit for a voltage-controlled oscillator |