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Since time-varying and random components of channel response can be suppressed by using a passive time-reversal scheme, the scheme can efficiently decrease the clutter responses in a rich-clutter environment such as forest. Simulations are performed based on a realistic forest channel model to demonstrate the time-reversal scheme can be used to detect a target.
In this paper, we propose a passive phase-conjugation scheme which has a lower system complexity than that of the active time-reversal detection scheme. Moreover, the proposed scheme does not use an additional signal processing to estimate either the target or clutter response so that the target detection can be performed very simple. MATLAB simulations are provided to show the processed result.
In this paper, we design a compact LTCC (low-temperature co-fired ceramic) package for UWB single-chip radios. This package has an internal space for the integration of single chip transceiver die and contains planar UWB antenna and feeding network. In addition, for the practical applications and measurement, the package is designed with conventional PCB (printed circuit board).
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