<![CDATA[ Microwaves, Antennas & Propagation, IET - new TOC ]]>
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TOC Alert for Publication# 4126157 2015March 30<![CDATA[Fractal analysis of rainfall event duration for microwave and millimetre networks: rain queueing theory approach]]>k distribution (E_{k}) for both the service and overlap times, while exponential distribution (M) is suitable for inter-arrival time. The mean error statistics for the regimes give root-mean-square errors of 0.64, 1.3 and 2.02% for the service, inter-arrival and overlap distribution, respectively, with acceptable Chi-Squared (χ^{2}) statistics. The M/E_{k}/s/∞ steady-state analysis is later undertaken to investigate the performance of the proposed queue system. Based on the overall data, a power-law relationship is found to exist between the service time and peak rain rate per spike.]]>942913001036<![CDATA[State transition matrix of inhomogeneous planar layers]]>94301306280<![CDATA[Design of broadband and tunable terahertz absorbers based on graphene metasurface: equivalent circuit model approach]]>94307312427<![CDATA[A 60 GHz simple-to-fabricate single-layer planar Fabry–Pérot cavity antenna]]>94313318780<![CDATA[Electromagnetic band gap-dipole sub-array antennas creating an enhanced tilted beams for future base station]]>943193271405<![CDATA[Antenna <italic>Q</italic> calculation using radiated modes and reflection coefficient]]>Q values close to theoretical limits. In order to evaluate how closely these designs approach the limits, it is necessary to calculate their Qs from measured or simulated data. Many standard techniques are accurate for large Qs, but yield values significantly below the actual Q for low Q cases. In this study, equations are derived to bracket the actual value of Q, and the issues involved in attempting to determine an exact value are discussed. Both time-averaged and time-varying energies are considered. The derivations and conclusions are different from those previously published. Data from electromagnetic simulations of design examples are used to illustrate.]]>94328335529<![CDATA[Controllable triple band-notched monopole antenna for ultra-wideband applications]]>2. The measured results show that the antenna has a wide bandwidth from 2.8 to 12.5 GHz for voltage standing wave ratio less than 2 apart from the rejected bands from 3.0 to 3.8 GHz, 5.1 to 6.1 GHz and 7.8 to 8.9 GHz. Meanwhile, radiation patterns and gain at various frequencies have been given.]]>94336342962<![CDATA[Two-section asymmetric coupled-line impedance transforming directional couplers]]>f_{u}/f_{l} = 3:1 and impedance transformation ratio R = 2.]]>94343350547<![CDATA[Compact arc-shaped antenna with binomial curved conductor-backed plane for multiband wireless applications]]>S_{11}| ≤ -10 dB to cover 2.4/5.2/5.8 GHz wireless local area network, 2.5/3.5/5.5 GHz worldwide interoperability for microwave access and ultra-wideband applications simultaneously. The radiating elements of the monopole are composed of multiple arc-shaped strips. The radius of each arc-shaped strip varies proportionally to the arithmetic progression sequence. The proposed multiband antenna is studied with different shapes of conductor-backed plane through the variation in order N of binomial curve equation. The overall dimension of the proposed multiband antenna is 32 × 25 × 0.8 mm^{3}. The prototypes of the proposed multiband antenna are fabricated and tested. The radiation mechanism of the proposed multiband antenna is explained using simulated current distributions. Simulated and experimental results obtained for these antennas show that they exhibit good radiation behaviour within the operational frequency bands.]]>943513591191<![CDATA[Stacked microstrip antenna fed by an <italic>L</italic>-probe for quadruple band operation]]>L-probe feed. The impedance bandwidth is enhanced by using double resonance at all frequency bands. With simulations, the relationships between the antenna's geometrical parameters and operational frequencies are clarified. The operational principle for quadruple band is explained by the simulated electric currents. The antenna is designed for Wi-Fi (2.45/5.25/5.6 GHz bands) and mobile WiMAX (3.5 GHz band).]]>943603681048<![CDATA[Beamforming properties and design of the phased arrays in terms of irregular subarrays]]>943693791024<![CDATA[Design of injection-locked oscillator circuits using an HBT X-parameters™-based model]]>943803881039