Antenna treatment method and system
AssigneeFrance Telecom
InventorsClaude Marro, Wolfgang Tager
Life of this patent
Estimating the term…
Abstract
The ratio of useful-signal power to the power of interference signals at an antenna (ANT) having plural sensors, and at least one sensor is obtained by filtering the antenna output signal with a filter having a transfer function (W(t), W(t, f)) equal to the ratio of two linear functions of the power ({circumflex over (p)}y(t), {circumflex over (p)}y(t, f)) at the output of the antenna to the power {circumflex over (p)}x(t), {circumflex over (p)}x(t, f)) at the input of the antenna (ANT).
Claims22
A method of improving the power ratio of useful signal to interference signals of an antenna having at least one sensor said method comprising filtering the signal from said antenna using a filter having a transfer function {W(t), W(t, f)} equal to the ratio of linear functions (F) and (G) of the power {{circumflex over (p)}y(t), {circumflex over (p)}y(t,f)} at the output of the antenna to the power {{circumflex over (p)}x(t), {circumflex over (p)}x(t,f)} at the input of the antenna, namely
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An antenna processing method comprising transforming into the frequency domain a signal transmitted from at least one sensor, filtering the signal resulting from said transformation, summing the respective signals following filtering, and transforming into the time domain the summing signal, wherein said filtering the signal from said antenna is performed with a filter having a transfer function {W(t, f)} equal to the ratio of two linear functions (F) and (G) of the power {{circumflex over (p)}y(t, f)} at the output of a summer to the power {{circumflex over (p)}y(t, f)} of the output signal(s) resulting from the transformation in the frequency domain:
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Antenna system comprising an antenna including at least one sensor apparatus for improving the useful-signal to interference-signals ratio of said antenna, the apparatus for improving comprising a filter for filtering the output signal of said antenna, the filter having a transfer function {W(t), W(t, f)} equal to the ratio of two linear functions (F) and (G) of the power {{circumflex over (p)}y(t), {circumflex over (p)}y(t, f)} at the output of the antenna to the power {{circumflex over (p)}x(t), {circumflex over (p)}x(t, f)}, namely
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Antenna system including a transformation unit to transform the or each signal transmitted by at least one sensor into the frequency domain, the antenna system comprising a channel filter to filter the signal from said transformation unit into the frequency domain, a summer to sum the signals respectively transmitted by said channel filters and a transformation unit for transforming into the time domain the signal at the output of said summer, a filter arrangement coupled to be responsive to the summer for driving the transformation unit for transforming into the time domain, the filter arrangement having a transfer function {W(t, f)} equal to the ratio of two linear functions (F) and (G) of the power {{circumflex over (p)}y(t, f)} of the output signal of the summer to the power {{circumflex over (p)}x(t, f)} of the output signals of said transformation unit into the frequency domain in accordance with
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Dependencies are inferred from the claim text.