When the conductors of an antenna have length greater than λ/4, where λ is the broadcast wavelength, the current distribution may have nodes where the current vanishes. If so, it would seem that the conductors could be cut at these nodes, creating small gaps, without any effect on the radiation of the antenna. The possibility of nodes in the current distribution of an antenna is suggested by th...

In this paper, a numerical model of rectangular enclosure with apertures and a real receiving dipole antenna is considered for the purpose of accurate electric shielding effectiveness calculation. Dipole antenna is often used in practice to measure the level of electromagnetic field at some points inside the enclosure in order to estimate its shielding efficiency. Transmission-line matrix (TLM)...

Many of the technical requirements proposed for the LWA are significantly expanded compared with the LWDA. Among the most significant changes in requirements is the wider operating band of the LWA, nominally 20 MHz to 80 MHz [1], compared with 60 MHz to 80 MHz for the LWDA. This presents new challenges in designing many of the system components including the antenna. Requirements for an LWA ant...

This Letter presents an accurate and stable method for the solution of transient electromagnetic response from conducting wire structures with the use of the time-domain electric-field integral equation (TD-EFIE). By using an implicit scheme with the central finite difference for the TD-EFIE, the transient responses from a wire scatterer illuminated by a plane wave and a wire antenna with an im...

Abstract—This paper presents the development of a standard surface mountable ceramic ball grid array (CBGA) package with an integrated patch antenna in low temperature cofired ceramic (LTCC) technology for emerging single-chip 60-GHz radios. It addresses the challenges of low-loss wire bonding interconnections required between the chip and the antenna as well as the package to allow efficient u...

This paper presents design and analysis of compact wire edge fed U-shape slot antenna. The proposed antenna has simple structure consisting U-shape slot on a circular patch of radious 13.1mm.The patch is designed on circular shape RTD substrate material of radious 13.2mm,with height of 5mm and whose permittivity is 2.2.By using only single patch a high impedance bandwidth is achieved. Simulated...

The potentially broad application area in engineering design using Genetic Algorithm (GA) has been widely adopted by many researchers due to its high consistency and accuracy. Presented here is the initial design of a wideband non-dispersive wire bow-tie antenna using GA for breast cancer detection applications. The ultimate goal of this design is to achieve minimal late-time ringing but at hig...

We report on investigations of the interaction of light with nanoscale antennae made from crystalline GaP nanowires (NWs). Using Raman scattering, we have observed strong optical antenna effects which we identify with internal standing wave photon modes of the wire. The antenna effects were probed in individual NWs whose diameters are in the range 40 < d < 300 nm. The data and our calculations ...

In this paper a novel differentially fed Ultra-Wide Band (UWB) antenna in low-temperature co-fired ceramics (LTCC) technology to be used in the 60 GHz band for integrated RF front-ends is presented. The antenna is based on the aperture stacked patch fed via H-shaped aperture to achieve more than 10 GHz operational bandwidth. The antenna is fed by a parallel-wire transmission line which enables ...