An outstanding square slot element, for x-band wireless applications with asymmetric coplanar waveguide fed (CPW) is proposed. Various shapes of metallic strips are utilized as grounded stubs for providing Right Hand Circular Polarization (RHCP) functionality and wide-band properties. By adjusting the proposed stubs and hook-shaped radiator, length and positions, wider impedance band width is o...

A R T I C L E I N F O Radiator, Overall Heat transfer rate, Genetic Algorithm, Spacing ratio Received July 2013 Accepted July 2013 Available online December 2013 The present work aims at maximizing the overall heat transfer rate of an automobile radiator using Genetic Algorithm approach. The design specifications and empirical data pertaining to a rally car radiator obtained from literature are...

Thermal performance has long been recognized as a critical attribute for space systems. control surface coating is common method in passive thermal protection. Unfortunately, limited analyzing models and data on the influence of coatings’ α/ε (absorptivity/emissivity) power system have published to date. To fill this gap, we proposed multiphysics model that combined environmental temperature ca...

A compact UWB with WLAN notch-based four-element CPW fed MIMO/diversity antenna is presented in this paper. Multiple elements facilitate the design to transmit and receive signal from all directions enhancing channel capacity diversity performance. The inverted L-shaped stub attached ground enhances impedance bandwidth (10 dB) provides response. Plus cross-shaped decoupling structure accomplish...

A method for the calculation of spectral line broadening in plasma has been developed and implemented. The method is based on a numerical simulation of the motion of the interacting plasma particles (both ions and electrons) and the use of the resulting time-dependent field to obtain the evolution of the radiator system. The Fourier transform of the resulting radiator time-dependent dipole func...

A preventable subgroup of motor vehicle injuries is burns from motor-vehicle radiators. Such burns can have a significant impact on return to work and patient psychological wellbeing.1 These injuries are commonly scald burns, often occurring following attempts to remove the lid of a hot radiator with high pressure or explosion of the radiator. This results in a spray of superheated fluid and st...

Bistability is common in nonlinear dynamical systems, but there have been no reports of intrinsic instabilities in black-body emission of optically excited media. Intrinsically bistable photo-luminescence has been reported however in Yb-doped heavy metal halide crystals at cryogenic temperatures and also in room temperature experiments in rare-earth-doped laser glass and transition metal laser ...

A very thin, solid radiator, totally internally reflecting, imaging Cherenkov counter (DIRC) is described. This device is well matched to the hadronic charged particle identification requirements at an asymmetric e+eB Factory.

We discuss the development of a simplified model for the jet noise source that can be used in practical predictions of installed noise. In the proposed scheme, the source is prescribed on a radiator surface defining the boundary between the inner rotational jet flow and the outer linear pressure field. The source consists of wavepacket-type partial fields whose noise propagation can be computed...