Today, the specific absorption rate has become an important and necessary measurement when designing implementing any type of antenna. In recent years, various devices have appeared that use different frequencies for wireless communication systems, which are a source electromagnetic radiation. The M-slot antenna is designed in this paper to operate multi-band communications using computer simul...

Abstract In this paper, a circular polarized patch antenna at NaviC and S-band is presented for Indian Regional Navigational Satellite System (IRNSS) receiver applications. For application proposed satisfying the criteria of polarisation with bandwidth 2477 MHz to 2508 MHz. The shape exhibits good gain which required operation communication systems IRNSS. Antenna operating frequency 2492.08 (S-...

results the results showed that the epoxy plates 6 and 2 mm thick had the highest and the lowest averages of shielding effectiveness at 4.48 db and 1.90 db, respectively. however, increasing the thickness was useful up to 4 mm. in addition, in a similar attenuation pattern, x-band frequency was divided into lower, middle, and upper sections. the lower section had the highest shielding effective...

A novel ultra-wideband (UWB) bandpass filter (BPF) with notched band based on microstrip/slotline ring resonators is presented in this paper. The UWB BPF is fabricated with two microstrip ring resonators on the top copper layer and a slotline ring resonator on the bottom ground layer. Thus, an ultra-wide passband can be achieved owing to the coupling effects and microstrip/slotline transitions ...

113 INTRODUCTION The growing demand from the commercial and military sectors for on-the-move communications at high data rates has generated interest in a new type of satellite terminal. These terminals can provide broadband communications from maritime vessels, trains, airplanes, land vehicles, and other transportation systems. Although the interest in the commercial sector is primarily in bro...

A satellite communications system is based on antennas in a stable orbit above the earth. Satellites serve as relay stations in the sky. The basic idea of satellite communications is that two stations on earth discuss via one or more satellites. So a little bit of satellite-related terminology: 1. Earth station is an antenna on or near the surface of the earth. 2. Uplink is a transmission from ...

This study presents a double-inverse-epsilon-shaped, triple-band epsilon-negative (ENG) metamaterial with two split ring resonators (SRRs). The proposed unit cell comprises single slit SRRs inverse-epsilon-shaped metal bits. Rogers RT6002, of dimension 10 × 1.524 mm3, is used as substrate. An electromagnetic simulator CST microwave studio to investigate the effective medium parameters material....

TerraSAR-X, the first national German radar satellite, is scheduled for launch in 2006. It carries an X-band highresolution synthetic aperture radar instrument featuring imaging modes like StripMap, ScanSAR and, particularly, SpotLight in a variety of different polarization modes [1] [2]. Thus the TerraSAR-X mission will provide both the scientific [3] and commercial [4] user community with a v...