In this paper, we propose a compact four-port dual-band MIMO antenna with suppressed higher order modes (HOMs). First, complementary split ring resonator (CSRR) loading is used on square microstrip to achieve simultaneous miniaturization and response. Next, the HOMs in proposed CSRR loaded configuration are analysed using equivalent circuit model as well surface current distribution plots. By p...

A miniaturized planar Yagi-Uda antenna for integration with PicoSats or other SmallSat missions is proposed. Miniaturization techniques, such as meandering and 1-D artificial dielectric concepts to reduce the guided wavelength, are employed overcome space constraints imposed by footprint while still maintaining good performance FR-4 antenna. Simulations measurements have been carried out on Uni...

In this paper, a miniaturized ultra-wideband antipodal tapered slot antenna with exponential strip arms is presented. Two designed equations are optimized to reduce the lower edge cut-off frequency of impedance bandwidth from 1480 MHz 720 MHz, resulting in miniaturization by 51%. This approach also improves without compromising radiation characteristics. The dimension proposed structure includi...

A rat-race coupler is one of the essential components used in microwave circuits. Rat-race coupler has numerous applications in satellite communication, phased array radar antenna systems and radar. Recently, wireless communication systems usually require smaller device size, in order to meet circuit miniaturization. Thus, size reduction becoming major design considerations for practical applic...

Surface plasmon polaritons are electromagnetic waves that propagate tightly bound to metal surfaces. The concentration of the electromagnetic field at the surface as well as the short wavelength of surface plasmons enable sensitive detection methods and miniaturization of optics. We present an optical frequency plasmonic analog to the phased antenna array as it is well known in radar technology...

The rapid growth and demand of wireless based applications for commercial and personal communication increases the demand of microstrip antennas with the advantage of being low cost, low profile, small size, capable of being integrated with VLSI design [2], [12]. However microstrip antennas have some inherent limitations i.e. narrow bandwidth, low gain, low efficiency, low power handling, radia...

The article in hand deals with a new approach regarding the technique of miniaturization and the improvement of antennas done by the incorporation of metamaterials. Such an approach is manifested into two different structures of metamaterial antennas, which are implemented for the radio frequency identification technology in the UHF range. The left-hand metamaterials are presented first by the ...