[PDF] Top 20 J. Microw. Optoelectron. Electromagn. Appl. vol.15 número3

... applications is depicted in [15]. In [19], a simple miniaturized triple-band antenna is realized by using a defected ground plane for WLAN/WiMAX applications. Double L-slot microstrip patch antenna array for WiMAX ... See full document

... the top of the upper substrate [14]. The elements of Fig. 2(c) and Fig. 2(d) printed on both sides of the bottom substrate are used as FSS layer (Fig. 3(a)).The main effect of 2 mm spacer is to reduce the coupling ... See full document

... In order to guarantee full control of excitation positions and waveform of partial discharges at the points P1 to P6 indicated in Fig.15, a new excitation schema shown by Fig.16 was developed in this work. ... See full document

... The most classical approach of broadband beamforming is to use tapped delay-lines (TDLs) or FIR filter to accomplish beamforming in time-domain. This time domain broadband beamformer is equivalent to a time domain ... See full document

... that realizes the impedance matching between the impedance of the feeding line built in microstrip line technology and the impedance of the component built in Substrate [r] ... See full document

... According to the results shown in the above table, we can show that the highest amplitudes of electric and magnetic fields radiated and total radiated power density are obtained for the[r] ... See full document

... In Fig. 2 are shown three situations of optimized microstrip antennas with full ground planes. For these designs were used FR-4 substrates with size 85 x 85 mm², relative permittivity 4.4, 1.57 mm of thickness, and loss ... See full document

... the amplification process occurs in a large fiber length compared to amplification schemes applying A correction method for the analytical model in Raman amplifiers systems based on en[r] ... See full document

... The passives elements are designed by compact architectures in a commercial 20-layer LTCC technology utilizing standard unfired thickness 114 µm DuPont 951PT tapes. The tapes have dielectric constant 7.8, loss tangent ... See full document

... This paper investigates one of the basic decision problems faced by a cognitive radio: given a time window of a specific size, a secondary user (SU) should decide if [r] ... See full document

... Rain attenuation can be conveniently defined as the product of specific attenuation (dB/km) corresponding to the point rain rate (typically measured at one end of the link) and the effective propagation path length (km) ... See full document

... [2] Coelho, Thiago V.N.; Pontes, M.Jose; Santos, Jose L.; dos Santos, A.Bessa; Silveira, Daniel D.; Silva, Vinicius N.H.; Lopez -Barbero, A.P.; Delgado, Felipe S.; Neto, Presley X., "A numerical and experimental ... See full document

... In (15), a > 0, b > 0 and z = a + ib , i.e., z is associated with an active PRI structure. Finally, note that lossless plasmonic scatterers with arbitrary radius have analytical expressions involving Bessel ... See full document

... interpolations of optical performance monitors (OPM) measurements, as well as in analytical models and numerical simulations [11]-[13]. The main figures of merit of QoT are the OSNR and the bit error rate (BER) [5]. The ... See full document

... The same is performed in Fig. 16 for the 25% best networks of topology 10. In Fig. 16, the interpretation for element (1,3), for example, is that 6.20% of internal void samples were misclassified as tracking by the best ... See full document

... In recent years, many researchers have sought energy-efficient solutions for telecommunications networks and computers and some energy models have been examined for wireless networks and ad hoc systems [4], [8], ... See full document

... Abstract — With the increase in demand to Backbone networks, one became fundamental the application of new telecommunication technologies for efficient use of devices and [r] ... See full document

... Quantum Particle Swarm Optimization for Synthesis of Non-uniformly Spaced Linear Arrays with Broadband Frequency Invariant.. Pattern.[r] ... See full document

... In Merged SLM scheme [2] a two stage IFFT is discussed to reduce complexity. Condex matrix based phase sequences [3] has achieved a 59% reduction in the computational overhead. To reduce the complexity of the ... See full document

... The geometry of this problem can be adequately described in terms of a cylindrically layered medium composed of both radial (horizontal) and vertical stratifications [17]. In the NMM formulation presented in [15], ... See full document