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This study presents the design of a dual-band cavity-backed phased array antenna with wide-angle scanning capability in K/Ka bands for the geostationary (GSO)-fixed satellite service (FSS). To reduce the losses and mutual coupling, a novel antenna element similar to the cavity-backed Strip-Slot-Air-Inverted-Patch (SSAIP) is proposed as an element of designed array of 81 elements. Wide-angle scanning...
This paper compares two different SIW-integrated high gain patch antennas operating at Ka-band. Each design configuration shows a different linear polarized (LP) radiation, vertical or horizontal. The gain enhancement and polarization are controlled by the integrated SIW cavity and the excitation slot orientation, respectively. The simulated results for reflection coefficient, gain and radiation pattern...
A small and low profile patch antenna in low temperature co-fired ceramics (LTCC) is presented. Wide bandwidth and stable boresight radiation pattern is realized installing a metal cavity with corrugated walls. The cavity suppresses surface wave propagations and a boresight radiation is obtained. The corrugated walls realize a wide bandwidth. In simulation, the return loss below −10 dB in the frequency...
The effect of cylindrical metallic enclosure on the resonant frequency of a suspended annular ring microstrip antenna (ARMSA) is investigated using HFSS simulation software and theoretically calculated using modal expansion cavity model and circuit theory concept. Theoretical result shows close agreement with simulated results. Variation in resonant frequency with air gap height and inner patch radius...
Integrating an antenna onto a specific platform of small size often requires its placement in a metallic cavity. The main consequence is the reduction of the antenna bandwidth. The objective of our study is to investigate the maximum possible bandwidth at a fixed frequency of 2.3 GHz for a patch antenna in a small square cavity. For this study, square cavities of sizes 32mm (0.245λ0), 40mm (0.3λ0)...
A patch antenna at Ka-band frequency based on GaAs micromachined technologies is presented in this paper. The antenna fabricated on 300μm-thick GaAs substrate with a cavity etched in it produces a low effective dielectric region around the patch leading to improvement of bandwidth and radiation. The bandwidth of 4.1%, gain of 7.27dB and radiation efficiency of 79.5% at 36.3GHz have been simulated...
This paper presents a compact, single substrate, active substrate integrated waveguide (SIW) cavity backed patch antenna oscillator. In the last years, the fast development of wireless communications spurred a great demand for low profile antennas. Cavity backed antennas have been widely studied as they offer several design advantages such as increased efficiency due to surface wave suppression, and...
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