Theory of ESPAR Design With Their Implementation in Large Arrays

Abstract

3359 VI. CONCLUSIONA buoyant, inkjet-printed, paper-based 3-D Lagrangian sensor for real-time flood monitoring has been presented. A new antenna design has been introduced comprising a dipole uniquely oriented on all the faces of a cube to achieve a near isotropic radiation pattern. The antenna performance has been demonstrated in an unconventional lossy medium of water and the sensor is able to communicate across a decent range both while in air as well as while half immersed in water. This work demonstrates a hybrid system utilizing a silicon chip integrated with an inkjet-printed circuit and antenna. This is a step forward in realizing all inkjet-printed, paper-based 3-D electronics. REFERENCES[1] L. "Evaluation of the real-time TRMM-based multi-satellite precipitation analysis for an operational flood prediction system

Advanced Dielectric Resonator Antenna Technology for 5G and 6G Applications

“…They are generally manufactured as three-dimensional dielectric components, which provide the flexibility to incorporate additional structures between DRA elements in an array configuration to mitigate parasitic mutual coupling [ 67 ]. Traditionally shaped beam-steerable DRA arrays ( Table 3 ) are demonstrated in isolated dielectric volumes and in-substrate compact array forms, where the steered beam can be realized by cascading phase-shifting circuitry or loading low-cost reactive loads to the feeds [ 34 , 68 , 69 ]. However, traditionally shaped DRAs usually have limited scanning angles because their fundamental resonating modes are not characterized by wide-beam radiation patterns.…”

Smart Antenna for Application in UAVs

“…These elements are charged according to a variable reactance originating from varicap diodes. The variation of the value of the reactance is reflected in the alteration of the main lobe of the radiation diagram [10]. The process of changing the main lobe is called beamforming.…”

Rotman Lens Design With Wideband Dra Array

“…Rotman-DRA phased arrays are suitable combinations to achieve a wide scanning range of the wideband phased array antenna. Recently, a low cost phased array with DRA elements based on ESPAR (Electronically Steerable Parasitic Array Radiator) theory and inexpensive reactive loads were reported [11,12]. Until nowadays, little attention is given to DRA phased array [13].…”