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This paper is to investigate the dielectric properties of concrete slab and propagation characterization of ultra-wideband (UWB) frequency signals in the range of 3 to 5 GHz through the concrete slab. An insertion transfer function is obtained through frequency-domain measurement in free space in the presence and absence of the concrete slab. The dielectric constant and loss tangent of three concrete...
The design and time domain characterization of conical antennas have been studied. This kind of antenna is well known for its wide bandwidth and omni-directional radiation pattern, and is suitable for ultra-wideband (UWB) communications. Two fabricated conical antennas show good performance over the UWB frequency band (3.1-10.6 GHz). The transmission and reception transfer functions of these antennas...
It is well-understood that co-design of the transceiver circuit and the antenna can improve matching, efficiency and pulse shape in ultra-wideband (UWB) applications. Transfer function characterization of the UWB antennas is necessary in order for these to be designed together with the circuits. Transfer function characterization of UWB antennas based on frequency domain measurement has been studied...
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