Analysis of transmit-receive characterization of UWB impulse signals

In the paper, the time domain electric field integral equation (TD-EFIE) in conjunction with the reciprocity principle is applied to synthesize the transmitting impulse signals on condition that the receiving signals have already been known. In addition, the effects of light-of-sight (LOS) and non-light-of-sight (NLOS) propagation paths on the transmitting and receiving impulse signals are also discussed. Furthermore, a novel averaged scheme has been proposed in the paper to keep the balance between eliminating oscillation phenomena and keeping the accuracy of computational results. In the analysis, impulse waveform and the shape of the antenna are arbitrarily given. The bowtie antennas excited by Gaussian monocycle pulses and ultra-wide band (UWB) slot antennas excited by prolate spheroidal wave functions (PSWF)-type UWB pulses are taken as examples and the computed results are compared with the originally known receiving impulse signals. The good agreement between them shows the correctness and effectiveness of the method proposed. The method also possesses the merits of clarity in conception and simplicity in computation.