A printed dipole antenna integrated with a duplex RF switch used for mobile base station antenna beam steering is presented. A coplanar waveguide to coplanar strip transition was adopted to feed the printed dipole. A novel RF switch circuit, used to control the RF signal fed to the dipole antenna and placed directly before the dipole, was proposed. Simulated and measured data for the CWP-to-CPS...

EEG is a noninvasive technique useful for the human brain mapping and for the estimation of neural electrical activities in human brain. A goal of processing EEG signals of a subject is the localization of neural current sources in human brain known as dipoles. Although this location estimation problem can be modeled as a particular kind of parameter estimation problem as in array signal proces...

We describe the dipole-dipole interactions between a linear array of optically driven silver metallic nanospheres (MNSs). These model calculations incorporate the full electric field generated by an oscillating dipole and predict several interesting effects due to the retardation of the field. The distribution of the power associated with MNSs along the array shows a strong variation on a scale...

To date, CubeSat radars and imagers have been limited to operations beyond S-band due the challenges associated with design of wideband, compact, low-frequency antennas. Concurrently, frequencies at VHF/UHF bands can image through clouds foliage, are very attractive for ice, water biomass sensing. There is thus a need develop wideband antennas that operate which low cost, light-weight, packable...

Within the context of modern digital phased array (DPA) radios, differential Radio Frequency (RF) front-ends provide much greater immunity to noise and distortion by suppressing second order harmonics. Recent advancements in RF offer high dynamic range, linearity, low transceiver chain. However, a major roadblock fully systems is presence common-mode resonances. In this article, we present nove...

Hertzian dipole radiation from narrow circumferential slots on a conducting circular cylinder is studied. Eigenfunction expansions are used and boundary conditions are enforced to obtain a set of simultaneous equations. A fast convergent series formulation is obtained and numerical results are shown. Our theory provides a viable model for dipole radiation from a circumferential slot array on a ...