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—Multiband (MB) orthogonal frequency-division multiplexing (OFDM) ultra-wideband (UWB) wireless, which provides high data rate access, is required to be distributed by using optical fiber. The performance of MB-OFDM UWB over fiber transmission system is investigated considering optical modulation and demodulation impact. Theoretical analysis of the effect(More)
We investigate by theory and experiment the performance improvement of an orthogonal frequency division multiplexing (OFDM) ultra-wideband (UWB) transmitted in a radio-over-fiber (RoF) system using a linearized mixed polarization single-drive X-cut Mach-Zehnder modulator (sd-xMZM). The third-order nonlinearity is suppressed due to the polarization dependent(More)
In this paper, a mode converter between mode LP<sub>01</sub> and LP<sub>0m</sub> (m&gt;1) is proposed based on two-stage tapered fiber. Each LP<sub>01</sub>-LP<sub>0m</sub> converter is obtained by changing the parameters of a generic structure. Three converters between LP<sub>01</sub> and LP<sub>0m</sub>, m=2, 3, &amp; 4, are designed for C-band, with less(More)
A novel wideband high-gain Magneto-Electric dipole antenna is presented. The proposed Magneto-Electric antenna is composed of a fishtail-shaped electric dipole, a half-circular loop antenna that works as a magnetic dipole, a microstrip-to-coplanar stripline transition balun, a box-shaped reflector and the loading of T-shaped array of metamaterial elements(More)
In this paper, a new quasi-transverse electromagnetic (TEM) microstrip line, named as packaged microstrip line, is proposed for microwave and millimeter-wave applications. It is comprised of three dielectric substrates: a base layer to place the metal strip, a top layer to build the perfect magnetic conductor (PMC) shielding with periodic plated vias, and a(More)
Channel modeling is the starting point of effective, efficient body-centric communications. Many efforts [2]-[6] have been made to characterize the on-body area propagation channel in static scenarios at various frequency bands in an anechoic chamber. This paper presents an experimental investigation into the in-body channel in 400 MHz MICS Band. By taking(More)
A novel split ring slot antenna with multiband characteristics is proposed in this paper. The antenna consists of a split ring slot and a ring slot on top surface as the radiator. A novel split ring slot antenna is proposed to realize polarized radiation based on the SIW cavity. Three patch-like radiation patterns and one monopolar radiation pattern at four(More)
The dual wavelength linearization (DWL) technique using two lasers with different wavelengths is for the first time comprehensively studied theoretically and experimentally to improve output signal power and suppress second- and third-order nonlinearities in radio-over-fiber (RoF) systems using an electro-absorption modulator (EAM). Spurious-free dynamic(More)