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Item type:Publication, Access status: without files , Directional couplers from 30 to 140GHz in siliconIn this paper directional couplers with reduced size, by lumped elements, inverted microstrip, and broadside coupled lines at 61, 110, and 122 GHz center frequency and up to 156-GHz bandwidth have been designed. The couplers show an isolation up to 40 dB. Different SiGe BiCMOS technologies with 250-nm and 130-nm feature width and 5 to 7 metal layers have been used. The measurement results have been compared to simulation results and good agreement has been observed.Publicationtype: Conference Paper85 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Six-Port-based Direction-Of-Arrival detection system(2010-12); ; ; Direction-Of-Arrival (DOA) detection is a fundamental procedure required by several monitoring and tracking systems for defense purposes and other security applications as well as industrial monitoring and measurement. The ability of a system to accurately determine the incident angle of an arbitrary electromagnetic wave incoming toward the observer device is an important as well as challenging task especially when low-cost and robustness are also key points for the overall tracking and detection or surveillance solution. Phase-measurement based DOA detection is commonly used in nowadays systems, but existing methods are based on traditional mixer architectures or expensive direct conversion devices increasing complexity and cost while compromising robustness. In this paper an innovative, robust and accurate technique is proposed to perform the DOA detection by means of Six-Port based Phase Measurement Detection.Publicationtype: Conference Paper45