Alessandro Cazzorla

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The work presented in this paper is related with time synchronization for wireless networks. In particular, it is focused on the proposal and experimental evaluation of a low-cost and high precision timestamping technique based on Ultra Wide Band (UWB) signalling. In recent years, the use of such systems has gained an increasing success thanks to their(More)
This paper describes the design and realization of a 5.6-GHz ultrawide-bandwidth-based position measurement system. The system was entirely made using off-the-shelf components and achieves centimeter-level accuracy in an indoor environment. It is based on asynchronous modulated pulse round-trip time measurements. Both system level and realization details(More)
Wireless sensor networks are becoming widely diffused because of the flexibility and scalability they offer. However, distributed measurements are significant only if the readout is coupled to time information. For this reason, network-wide time synchronization is the main concern. The objective of this paper is to exploit a very simple hardware(More)
This paper presents the modeling and simulations of compact multi-band MEMS based LC tank resonator suitable for very low phase-noise VCO. The resonator is based on a high-Q spiral inductor and high capacitive ratio varicap fully integrated in FBK-irst MEMS manufacturing process. Simulation results show that the resonator allows for an overall tuning range(More)
This paper presents the design and testing of a MEMS Varactor for microwave applications. The tunable capacitor consists of a movable bridge shunt-connected to a 50Ω coplanar line on HR-silicon substrate. The design is based on double actuation mechanism with a mechanical central bond that inhibits the pull-in and allows for theoretically infinite(More)
This paper presents the design, manufacturing and testing of a MEMS SP16T switch to be used in open loop reconfigurable antenna systems. It consists of the hybrid integration of #5 MEMS SP4T switches (realized on HR Silicon substrate) on a multilayer substrate. The bilayer structure allows one to avoid RF and DC signal crossovers that could degrade the(More)
This paper presents the design and manufacturing of a novel Dual Gap MEMS varactor which operates before the pull-in ensuring continuous tuning range. The device is based on interdigitated DC and RF electrodes, allowing uniform distribution of the electrostatic force. The tunable capacitor has been embedded in the BEOL (Back End Of Line) metallization stack(More)
In this paper, a system for measuring moisture content of wood-chip samples is presented, based on propagation time measurements of electromagnetic pulses in a two wire probe. Both simulation and experimental results are reported, validated by concurrently performed TGA measurements. It is shown that the proposed approach may be advantageous, since it(More)
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