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A 2 × 2 array antenna with conical beam radiation is proposed. To achieve circular polarization (CP) with broad axial ratio (AR) bandwidth that can cover the WLAN 2.4 GHz band, each array patch element is loaded with a near semi-circular slot fed by an L-shaped probe, which is linked to a corporate feed network. Here, the conical beam radiation with a peak gain at 30 degrees theta (θ) angle is achieved...
This article summarizes the development of mature and highly integrated SiGe BiCMOS ICs for gigabit-per-second communications according to the requirements of the IEEE 802.15.3c and 802.11.ad-draft standards. A single-element transceiver chipset for point-to-point communications is described with emphasis on a feature-rich yet compact 60-GHz receiver. Next, a 16-element phased-array transceiver chipset...
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