Communications: directive radio wave systems and devices (e.g. – Presence detection only
Reexamination Certificate
2007-01-09
2007-01-09
Gregory, Bernarr E. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Presence detection only
C342S021000, C342S070000, C342S118000, C342S134000, C701S300000, C701S301000
Reexamination Certificate
active
10450045
ABSTRACT:
The present invention relates to an ultrawideband radar. It also relates to a modulator, in particular for switching microwaves over a very short duration. The radar includes a modulator modulating a carrier microwave, this modulator including a microwave mixer means for generating a modulation signal. The microwave enters on one input of the mixer and the modulation signal on the other input of the mixer, the output signal from the mixer being provided to the transmission means of the radar. Advantageously, the modulation signal may be pulsed and of very short duration. A local oscillator, operating as a free oscillator, provides the microwave to be modulated. The invention applies in particular in respect of aiding the parking of motor vehicles. More generally, it applies in respect of all applications which require low-cost high distance resolution radar detection.
REFERENCES:
patent: 2666134 (1954-01-01), Dicke
patent: 4325138 (1982-04-01), Zscheile, Jr.
patent: 4357610 (1982-11-01), Kingston et al.
patent: 4937580 (1990-06-01), Wills
patent: 5049839 (1991-09-01), Jun
patent: 0998064 (2000-05-01), None
Cornic Pascal
Laviec Philippe
Liabeuf Bernard
Melero Francisco
Gregory Bernarr E.
Lowe Hauptman & Berner LLP
Thales
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