Communications: directive radio wave systems and devices (e.g. – Determining distance – Material level within container
Reexamination Certificate
2007-06-05
2007-06-05
Sotomayor, John B. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Determining distance
Material level within container
C342S175000
Reexamination Certificate
active
11109532
ABSTRACT:
A radar fill-level sensing device has a high-frequency unit that serves to generate and process radar signals of a predefined frequency and wavelength, an antenna for transmitting and/or receiving the radar signals, as well as circuitry, provided on a circuit board. That circuitry includes a microstrip circuit for connecting the high-frequency unit to the antenna, that microstrip circuit featuring a ground conductor. The ground conductor encompasses a first segment, a radial stub and a second segment, the length of the first segment corresponding essentially to one quarter of the predefined wavelength. The radial stub is positioned at the end of the first segment, the second segment connects to the end of the first segment and to the radial stub, and the second segment is grounded. Based on this design, a radar fill-level sensing device is obtained that can easily and reproducibly be implemented within the requirements of “intrinsically safe” ignition protection.
REFERENCES:
patent: 5109205 (1992-04-01), Hart et al.
patent: 5309163 (1994-05-01), Ngan et al.
patent: 5511238 (1996-04-01), Bayraktaroglu
patent: 5583523 (1996-12-01), Wallace, Jr.
patent: 6091355 (2000-07-01), Cadotte et al.
patent: 6246377 (2001-06-01), Aiello et al.
patent: 2004/0140814 (2004-07-01), Bletz et al.
patent: 2005/0264442 (2005-12-01), Bletz et al.
patent: 2006/0097906 (2006-05-01), Heide
patent: WO 94/28592 (1994-12-01), None
Bletz Achim
Musch Thomas
Cesari & McKenna LLP
Krohne S.A.
McKenna John F.
Sotomayor John B.
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