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This paper proposes a practical alternative to the traditional link budget approach for Impulse-based UWB systems (I-UWB), which is based on the Friis formula. The proposed link budget approach overcomes the narrowband limitations of the traditional link budget by proposing the use of an antenna-pulse coupling gain. This gain is specific for an antenna tx-rx pair and the I-UWB pulse used and can be easily determined by taking a frequency or a time domain measurement. The paper introduces the approach and then verifies its accuracy by presenting the results of several measurements at distances ranging from 1 to 20 m.
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