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This paper highlights a 14nm Analog and RF technology based on a logic FinFET platform for the first time. An optimized RF device layout shows excellent Ft/Fmax of (314GHz/180GHz) and (285GHz/140GHz) for NFET and PFET respectively. A higher PFET RF performance compared to 28nm technology is due to a source/drain stressor mobility improvement. A benefit of better FinFET channel electrostatics can be...
Both research and practice have revealed that sensor devices running the 802.15.4 on their MAC layer may be competing for wireless communication on the 2.4 GHz ISM band with Wi-Fi, Bluetooth and other proprietary devices. Building upon a SunSPOT development platform, we evaluate the impact of channel hopping on interference mitigation in the 2.4 GHz ISM band and propose a channel hopping model that...
A novel method of producing multiple axial and tilted beams using eight feed double square loop (DSL) antenna is proposed. With varying permittivity value of dielectric substrate, the DSL antenna produces multiple beams and steer each of the beam produced at step of 45° throughout the 360° of space, thus offering wide range of option for any modern wireless device integrated with this antenna to focus...
IEEE 802.15.4 standard provides a viable MAC and PHY specification for wireless sensor networks. Performance evaluation of these networks has been reported in literature. Previous works focus largely on analyzing the CSMA/CA traffic and frame delay due to Guaranteed Time Slots (GTS) allocations. In this work, we propose a analytical model to understand and characterize the performance of GTS traffic...
A novel method of producing and switching multiple beams using double square loop (DSL) antenna is proposed. By switching the feed point, the pattern can be steered at a coarse step of 45?? throughout the 360?? of space and the associated beam can be directed in eight directions, thus offering a wide range of options for modern wireless devices to focus the beam at a desired target direction. Furthermore,...
Single arm rectangular spiral antenna with four open circuit switches over a high-impedance surface (HIS) is proposed for pattern reconfigurable applications. The HIS plane without vias is utilized to achieve a low-profile antenna design with a net thickness of 5.08 mm. This is equivalent to ~ lambdao/17 for the intended operating frequency of 3.3 GHz. By using the possible sixteen switching combinations...
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