Abstract: A method for determining the filling level of a product in a tank using electromagnetic signals, comprising: a) generating a transmission signal having a predetermined length; b) propagating the signal towards the product; c) receiving a reflected signal; d) determining whether the received signal overlaps the transmitted signal in the time-domain; e) setting an overlap-parameter to 1 if overlap is detected, otherwise setting the overlap-parameter to 0; if the state of the overlap parameter is not changed and if no overlap is detected, generate a signal having a length exceeding the previous length and repeat step b); and if the state of the overlap-parameter is not changed and if an overlap is detected, generate a signal having a length shorter than the previous length and repeat step b); and if the state of the overlap-parameter is changed, determine the filling level based on the length of the transmitted signal.

Abstract: A method for determining the filling level of a product in a tank using electromagnetic signals, comprising: a) generating a transmission signal having a predetermined length; b) propagating the signal towards the product; c) receiving a reflected signal; d) determining whether the received signal overlaps the transmitted signal in the time-domain; e) setting an overlap-parameter to 1 if overlap is detected, otherwise setting the overlap-parameter to 0; if the state of the overlap parameter is not changed and if no overlap is detected, generate a signal having a length exceeding the previous length and repeat step b); and if the state of the overlap-parameter is not changed and if an overlap is detected, generate a signal having a length shorter than the previous length and repeat step b); and if the state of the overlap-parameter is changed, determine the filling level based on the length of the transmitted signal.

Abstract: A radar level gauge system, for determining a filling level of a product contained in a tank, the radar level gauge system comprising: a transceiver for generating, transmitting and receiving electromagnetic signals; a propagating device electrically connected to the transceiver and arranged to propagate a transmitted electromagnetic signal towards a surface of the product contained in the tank, and to return echo signals resulting from reflections at impedance transitions encountered by the transmitted electromagnetic signal, including a surface echo signal resulting from reflection at the surface, back to the transceiver; processing circuitry connected to the transceiver and configured to determine the filling level based on the surface echo signal; and a bottom reflector arranged at a bottom of the tank.

Abstract: A radar level gauge system, for determining a filling level of a product contained in a tank, the radar level gauge system comprising: a transceiver for generating, transmitting and receiving electromagnetic signals; a propagating device electrically connected to the transceiver and arranged to propagate a transmitted electromagnetic signal towards a surface of the product contained in the tank, and to return echo signals resulting from reflections at impedance transitions encountered by the transmitted electromagnetic signal, including a surface echo signal resulting from reflection at the surface, back to the transceiver; processing circuitry connected to the transceiver and configured to determine the filling level based on the surface echo signal; and a bottom reflector arranged at a bottom of the tank.

Abstract: The present invention relates to a circuit for processing a signal and comprising an amplifier (20) having an input and an output. The circuit further comprises a first switching arrangement (S3, T3) and a second switching arrangement (S2, T2). The first switching arrangement being arranged between said input and ground and said second switching arrangement being arranged between said output and ground. The switching arrangements are operatively arranged to connect said input and output to said ground so that said amplifier attenuates said signal.

Abstract: The present invention refers to an arrangement in an antenna, the arrangement comprising: an electrically thin microwave phasing structure including a support member, a reflective arrangement for reflecting microwaves within a frequency operating band and supported by said supporting member, and a phasing arrangement of electromagnetically-loading structures, said electromagnetically-loading structures being interspaced from each other and disposed at a distance from said reflective arrangement by a support matrix to provide said emulation of said desired reflective surface of selected geometry. The electromagnetically-loading structures are arranged on at least two substrate layers in at least two planes.

Abstract: The present invention refers to an arrangement in an antenna, the arrangement comprising an electrically thin microwave phasing structure including a support member, a reflective arrangement for reflecting microwaves within a frequency operating band and supported by said supporting member, and a phasing arrangement of electromagnetically-loading structures, said electromagnetically-loading structures being interspaced from each other and disposed at a distance from said reflective arrangement by a support matrix to provide said emulation of said desired reflective surface of selected geometry. The electromagnetically-loading structures are arranged on at least two substrate layers in at least two planes.