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In this paper, a flexible I shaped stacked novel ultra wideband (UWB) antenna with defected and reduced ground resonant at 1.26 GHz with an impedance bandwidth of 1.278 GHz (1.0596 GHz to 2.3374 GHz) has been proposed which can be suitably employed for satellite reconnaissance, amateur radio, future soil moisture and sea surface salinity mission applications. The material employed for substrate is...
In this talk, we will present a wideband microstrip antenna in dual-layer substrates. As is well known that, conventional low-profile microstrip antennas have the drawback of their inherent narrow bandwidth characteristics. As a result, it seriously limited their usages in high data rate wireless transmission applications, such as high precision radar detection, multi-inputmulti- output (MIMO) systems...
The design and realization of a low-profile wideband dual-polarized patch antenna with high isolation and low cross polarization has been presented. The aperture-coupled antenna element has four layers of substrates. Two microstrip lines terminated with circular patches are printed on the backside of the bottom substrate for feeding the radiating patches, while on the other side is a ground plane...
A reconfigurable antenna based on liquid crystal technology is presented in this paper. It comprises of a 1×4 microstrip patch antenna array, LC-based inverted microstrip line (IMSL) phase shifters, and RF-feeding and biasing networks. Nematic LC (N-LC) cell is used as tunable substrates for both the microstrip patch antenna array and the phase shifters. The dielectric tensor of N-LC is controlled...
Microstrip patch antennas are the most common form of printed antennas in antenna community. Besides the advantages of the microstrip patch antennas they have some unwanted features as surface wave excitation. Similarly, electromagnetic bandgap (EBG) structures are drawn major attraction with their interesting features in electromagnetics and antenna community. These structures are periodic in nature...
High order harmonic may affect antenna performance, reduce antenna efficiency and cause electromagnetic interference. So suppression of the harmonic has been a focus issue in the field of antenna design. It is demonstrated that the photonic band gap (PBG) structure and defect ground structure (DGS) provide an effective way for suppressing high order harmonics of antenna. In this paper, a novel antenna...
A multi-band square patch antenna based on shorted pins and asymmetric-circular shaped slots is proposed for L-band and S-band communication applications. The desired bandwidth can be obtained by adjusting the positions of these shorted pins and asymmetric-circular shaped slots. Also, the positions of the asymmetric-circular shaped slots can be used for choosing the desired resonance frequencies....
This paper presents a comparative study for designing and modeling patch antenna with different electromagnetic computer aided design (CAD) approaches as CST, HFSS, and FEKO. The patch antenna is an insert feed type with a copper patch and Roger RT/duroid substrate as a case study. The Wi-Fi operating frequency of 2.45 GHz is chosen for the resonator design. The effectiveness and limitations for each...
This paper presents high gain substrate slotted microstrip patch antenna design for X-band satellite applications. The proposed antenna has been designed by using the substrate of Flame Retardant 4 (FR4) having dielectric constant εr of 4.4. The ground, patch and the feedline are made of copper material having thickness of 0.02mm and conductivity of 5.58 × 106 Siemens/m. The proposed antenna has been...
The motive behind this research is to analyze the performance of different microstrip patch antennas employing different shapes of substrate and ground (circular, rectangular, square, elliptical and hexagonal) using flexible substrate material for UWB wireless applications. In this paper, the multifaceted novel UWB flexible microstrip patch antennas operating over 8.2 GHz frequency for indoor location...
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