A metaloop antenna (1FD-MetaLPA), made of C-type metaatoms and having a single feed point, F L ', is created to radiate left-hand circularly polarized (LHCP) axial beam at frequency f xmlns:xlink="http://www.w3.org/1999/xlink">LH-1FD = 2.55 GHz right-hand (RHCP) xmlns:xlink="http://www.w3....

A Substrate Integrated Waveguide (SIW) planar array is presented using a right handed circularly polarized (RHCP) element with four crossed tilted radiating slots. In addition, a pair of metallic tuning vias is included to really improve the reflection of longest slots. A corporate feeding network over SIW has been designed for distributing the input signal to 128 radiating elements, divided in...

Hard sphere crystal growth is a delicate interplay between kinetics and thermodynamics, where the former is commonly thought to favour a random hexagonal close packed structure and the latter leads to a face centered cubic crystal. In this article, we discuss the influence of slanted stacking faults on the growth of sedimentary colloidal crystals from dispersions with high initial volume fracti...

In this paper, the application and development of a highly integrated GPS receiver that employs reflected GPS signals for ground object detection and flood flow is described. Both righthand circular polarization (RHCP) and left-hand circular polarization (LHCP) antennas are employed so that the direct and reflected signals can be simultaneously obtained. The objective of this study is to use th...

A compact two-port feeding circuit that supports a dielectric resonator (DR) element is presented for applications requiring polarization diversity. The L-band structure consists of cylindrical DR can generate right-handed circular (RHCP), left-handed (LHCP), and linearly polarized radiation. dimensions have been optimized considering relative constant ε <sub xmlns:mml="http://www.w3.org/1998/M...

Synthetic Aperture Radar (SAR) is a multipurpose sensor that can be operated in all-weather and day-night time. Recently, the SAR sensor is operated in linear polarization (HH, VV and its combination) with limited retrieved information. The characteristic of the conventional SAR sensor is bulky, high power, sensitive to Faraday rotation effect etc. Recently, we are developing the Circularly Pol...

Aiming to the limitations of traditional reconfigurable antennas, this paper proposes a novel antenna that can achieve four polarizations and continuously-tunable frequency. The proposed is based on liquid metal, i.e. eutectic gallium indium (EGaIn). pattern slots be controlled by changing amount metal inserted in 3-D printed channels. work under polarization modes: left-hand circular (LHCP), r...

Despite the antenna’s privileged position as the first line of defense against interferers, jammers and spoofers, most detection and mitigation techniques are realized in the receiver’s backend signal processing blocks. Nonetheless, these solutions often require considerable additional hardware added to the receiver’s frontend and antenna design. For example, multi-antenna arrays replace a sing...

This paper presents a feasibility study of singlylayered dual-band reflectarray for space applications. The data links should operate simultaneously at K-band downlink frequency band 17.7-20.2 GHz with left-hand circular polarization (LHCP) and Ka-band uplink 27-30 right-hand (RHCP). main aim is to present how can be designed so as allow reconfigurability its radiation pattern, especially in te...