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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)
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)
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)
A novel compact slotted dielectric substrate loaded broadband Vivaldi antenna is proposed. This antenna consists of a typical antipodal SIW Vivaldi antenna and two pieces of FR4 substrate with uneven thickness and periodic slots, two pieces of FR4 substrate is symmetrically loaded on Vivaldi antenna above and under respectively. The effects of different(More)
In this paper, a triple-band substrate integrated waveguide(SIW) antenna is presented. The proposed antenna consists of a T-shaped radiator, where it is etched on the top side of the common dielectric substrate and fed by a substrate integrated waveguide(SIW) feed-line. Embedded in the E-plane of the antenna are two arrays of zero-index matamaterials (ZIM)(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)
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)