Abstract—A printed dipole antenna with back to back asymmetric dual-C-shape uniform strips capable of generating a wide operating band for digital television (DTV) signal reception in the 470–862 MHz band is presented. This antenna is associated with C-shape strips and asymmetric structure, and it operates band in 455–865MHz. By proper adjusting some parameters, it is possible to achieve a broa...

There are presented results of experimental-laboratory testing a new method to diagnose the right ventricular hypertrophy. The method is based upon the dipole electrocardiotopography (DECARTO) technique, proposed formerly by the authors and successfully applied for recognition of the left ventricular hypertrophy. The results obtained on reliably verified groups of normal and diseased persons sh...

We compare four different model geometries for particles with small-scale surface roughness. The geometries are based on regular and stochastic surface perturbations, as well as on 2Dand 3D-roughness models. We further compare T-matrix and discrete dipole computations. Particle size parameters of 5 and 50 are considered, as well as refractive indices of 1.6+0.0005i and 3+0.1i. The effect of sma...

Much of the work of Spectrum Planning Group is based on well established principles of ‘antennas and propagation’. Propagation matters have received a lot of attention over the years and much has been written on the topic but the ‘antennas’ part, although arguably simpler, may lack a suitable written reference that gathers much of the relevant material into one place. The primary purpose of thi...

In this paper a novel method for computing the radiation pattern and also the input impedance of a planar rectangular micro-strip antenna array with consideration of mutual coupling and mutual impedance is presented. Each two triangles with a common edge make an Edge element or RWG. Any such edge element is considered as an infinitesimal dipole. The electrical currents over each dipole can be c...

The log-periodic dipole array (LPDA) has become the most popular commercial antenna for reception of TV signal in VHF and UHF bands in Europe. The antenna consists of two booms of a square cross section to which dipoles are attached (Figure 1). The booms play the role of the feeding two-conductor line. The dimensions of the boom are relatively large compared to the wavelength and the dipole len...

A robust and versatile method is demonstrated to maintain, for an arbitrary time, quasiconstant and strong orientation for molecules with minute dipole moments. The procedure is based on submitting molecules in cyclic wave packets to periodic trains of nonresonant pulses in an electrostatic field. We show that approximate cyclic states can be created by suddenly switching off a long laser pulse...

Deduce the approximate form of the current in a center-fed linear dipole antenna of half height h when excited by a voltage source V0e iωt across the antenna terminals, whose gap width d is small compared to h. From this, give an expression for the impedance of the antenna (whose real part is the so-called radiation resistance). You may assume that the antenna conductors have radius a small com...

The radiation of an electric dipole emitter can be drastically enhanced if the emitter is placed in the nano-gap of a metallic dipole antenna. By assuming that only surface plasmon polaritons (SPPs) are excited on the antenna, we build up an intuitive pure-SPP model that is able to comprehensively predict the electromagnetic features of the antenna radiation, such as the total or radiative emis...

We consider the implications of experimental limits on the permanent electric dipole moment (EDM) of the electron and neutron for possible new parity-conserving (PC) time-reversal violating (TV) interactions. We show that the constraints derived from one-loop contributions to the EDM exceed previously reported two-loop limits by more than an order of magnitude and imply a lower bound on the new...