An Experimental Demonstration of UWB-IR-over-Fiber System

Transmitting spectrum control by band pass tapered slot antenna on UWB-IR application

“…The transmitting pulse and the spectrum evaluation are examined in order to know the mask compatibility. Figure 7 shows the transmitting pulse (x-axis: 50.0ps/div, yaxis: 100mV/div) and its spectrum by Fourier transformation [5]. This pulse is processed so that the frequency spectrum may have null at GPS band, around 1.5GHz.…”

“…Moreover, the feature that we can simplify the system construction and reduce the load of the design is added. This antenna has been fabricated and tested in an actual UWB-IR system as mentioned in the literature [5], [6]. More attenuation has been demanded to fully satisfy the mask without phase distortion.…”

Electro-Optical Generation and Distribution of Ultrawideband Signals Based on the Gain Switching Technique

“…Several schemes for UWBoF have been proposed recently that depend on the optical generation of the impulse radio [7][8][9][10][11]. The generation of Gaussian monocycles and doublets as an impulse signal have been reported in many research schemes for UWB systems.…”

“…Several modulation schemes have been employed in order to satisfy the application and the design parameters such as pulse amplitude modulation (PAM), on-off keying (OOK), pulse position modulation (PPM), and binary phase-shift keying (BPSK) [13]. The implementation of an experimental UWBoF system for distributing IR-UWB signals based on OOK pulses has been carried out in [9,10] and the optical BPSK modulation scheme to generate biphase Gaussian monocycle pulses has been carried out in [11]. In this paper, we demonstrate two different approaches for the generation and distribution of electro-optic IR-UWB signals based on a GSL and PPM modulation scheme at a bit rate of 1.625 Gbps.…”