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A 60GHz wideband circularly polarized E-shaped patch antenna array is designed using surface micromachining. The E-shaped patch is fully utilized to obtain good circular polarization performance. The antenna array is excited by four-way power divider. The four-way power divider is designed using rectangular micro-coaxial transmission line. The antenna array with the specified size of 12.5mm×5.7mm×0...
A new type of dual-polarization and dual-frequency multilayer-stacked microstrip array antenna is introduced. The feeding mechanism of the element is the aperture coupling for one polarization and the direct feeding for the orthogonal polarization. The microstrip element exhibits a wideband of operation. A slot etched on driven patch is used to improve isolation performance of the proposed antenna...
A novel four-way power divider based on substrate integrated waveguide is presented. Broadband performance is obtained by using a stepped coaxial line transformer together with tapered substrate integrated waveguides. Simulated and measured results show that good performance of insertion loss and impedance matching is achieved over a broad bandwidth from 4 GHz to 11 GHz. When the proposed power divider...
A new ultra-wide band-pass FSSs suitable for high frequency and wideband applications is presented. The band-pass structure consist only double layer FSSs and one kind of dielectric material with high dielectric constant. By designing three different arrangements, transmission characteristics of wideband and ultra-wide band in large oblique incidence are realized.
A novel broadband millimeter-wave FLAPS reflector antenna with three types elements has been presented. The progressive phase shift is achieved by square-annular patches, combined patches and rectangle patches. The choice of this three types elements can make the phase shift smoother and increased up to 360??. Using this technique, a 15??-beam-steering FLAPS reflector antenna operating at 95 GHz is...
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