Communications: directive radio wave systems and devices (e.g. – Determining distance – Material level within container
Patent
1994-02-14
1995-08-08
Lobo, Ian J.
Communications: directive radio wave systems and devices (e.g.,
Determining distance
Material level within container
342132, 73290R, G01S 1334
Patent
active
054403103
ABSTRACT:
A bandwidth synthesized radar level measurement system includes a transceiver for generating a transmitted signal and a sweep signal. An antenna coupled to the transceiver sends the transmitted signal toward a level corresponding to a product surface and receives a reflected signal therefrom. A sweep generator generates a chirp slope signal in response to the reflected signal. An intermediate frequency (IF) processor receives the chirp slope signal and a difference signal mixed from the transmitted and reflected signals. The IF processor produces an amplified IF signal and a sweep control receives the amplified IF signal to adaptively control the sweep generator and to produce an output signal including a distance from the antenna to the level corresponding to the product surface.
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Lobo Ian J.
Motorola Inc.
Nehr Jeffrey D.
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