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In this paper, a high-gain low-profile Fabry-Perot Cavity antenna with a wide 3-dB gain bandwidth is proposed. By employing a gradually increased wedge structure on the ground, the 3-dB gain bandwidth is improved from 17% to 24.2%. Moreover, this structure has almost no influences on the impedance bandwidth and the maximum realized gain of the Fabry-Perot cavity antenna.
This paper proposes a wideband polarization reconfigurable antenna design for WLAN applications. It consists of a shorted annular patch (SAP) antenna as the source, a partially reflective surface (PRS) structure to enhance the gain, and a reconfigurable Wilkinson power divider as the feed network. The antenna can electronically alter its polarization between linear polarization (LP), left-hand circular...
This paper concerns 18-40 GHz 1times 16 beam shaping and 1times 8 beam steering phased antenna arrays (PAAs) realized on a single low-cost printed circuit board substrate. The system consists of a wideband power divider with amplitude taper for sidelobe suppression, wideband microstrip-to-slotline transition, a low-cost true time piezoelectric transducer (PET)-controlled phase shifter, and wideband...
An electronically controlled beam focusing/ defocusing Phased Array Antenna (PAA) system is proposed for use in Microwave Imaging Reflectometry (MIR) systems, which are being developed to measure plasma density fluctuations. The design, construction and performance of a Ka-band 1times8 true time delay E-plane beam scanning and broadening phased array system based on piezoelectric transducer controlled...
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