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Name
AMS Acta
Type
Institutional Repository
Items
4038 Publications
Compatibility
OpenAIRE 3.0 (OA, funding)
OAI-PMH
http://amsacta.cib.unibo.it/cgi/openaire
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  • Finite Ground Coplanar Waveguide Shunt MEMS Switches for Switched Line Phase Shifters

    Switches with low insertion loss and high isolation are required for switched line phase shifters and for transmit/receive switches at the front end of communication systems. The design, fabrication, and characteristics of a Finite Ground Coplanar (FGC) waveguide capacitive shunt MEMS switch implemented on high resistivity Silicon is presented. The switch has a measured insertion loss and return loss of less than 0.35 dB and greater than 11 dB respectively, over the frequency range of 3 to 50...

    Optimization of InGaAsP-based BRAQWET heterostructures

    A new class of optical switching structures has been recently proposed, the barrier resevoir and quantum well electron transfer structures (BRAQWETS), which are based on the voltage-control transfer of electrons in multiple-quantum wells. This type of modulators provides stronger electro-absorption and refraction than structures based on the quantum confined Stark effect, although the optical confinement is smaller due to the necessarily limited number of quantum wells. The purpose of this pr...

    Substrate effects in wideband SiGe HBT mixer circuits

    In this paper the influence from substrate effects on the performance of wideband SiGe HBT mixer circuits is investigated. Equivalent circuit models including substrate networks are extracted from on-wafer test structures and compared with electromagnetic simulations. Electromagnetic simulations are also applied to predict short distance substrate couplinge effects. Simulation results using extracted equivalent circuit models and substrate coupling networks are compared with experimental resul...

    MM-wave on-wafer characterization of electro-optic devices: a new, simple approach

    A new simple experimental set-up both for on-wafer and in-package electrical and electro-optic characterization of electro-optic devices up to 40 GHz is presented. The technique makes only use of a conventional network vector analyzer (NVA) and of a calibrated high-speed photodetector. The electro-optic transmission coefficient is simply deembedded from the electrical S21 using the detector calibrated responsivity. The RF calibration of the set-up implements the RSOL technique. The results ob...
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