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In this paper, designs of both circular and octagonal microstrip patch antennas are presented on the Substrate Integrated Waveguide (SIW) for X- Band Applications. Both antennas are modelled and simulated using the full -wave simulator CST MWS. It can be concluded that the proposed antenna designs are able to achieve high gain and directivity with the miniature, compact, light, cost effective and...
L-band SiGe HBT active differential equalizers with variable positive or negative gain slopes have been designed and fabricated for frequency and temperature compensation of microwave and optical systems. The active equalizer employs series/parallel LC resonator-loaded bridged-T attenuators in the feedback path of the differential amplifier to achieve high gain and variable positive or negative gain...
The guidelines for designing a high efficiency and low distortion 2-stages Gallium Nitride (GaN) power amplifier (PA) are presented. In particular, the developed approach to mitigate the phase distortion (AM/PM) without worsening the efficiency and gain features is adopted to design a 7GHz PA based on 0.25 µm GaN process from TriQuint. When tested with continuous wave signals the PA shows a saturated...
The paper presents the results of a project leading to design and fabrication of a transmitting-receiving module destined for application in an active electronically scanned array (AESA). The module is supposed to operate in the band from 9 GHz to 10 GHz. GaAs technology core chip is applied and it is used to drive power amplifiers based on GaN technology. The shape of the module enclosure follows...
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