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Abstract: The
overcrowded wireless spectrum and the rapidly increasing need for Giga-bit per second
downlink data rate form the driving force of microwave frequency front-end module
research and development. The unlicensed 57-63 GHz frequency range is of great
importance to the realization of such high speed access point. Modern ferrite microwave
devices that are smaller, faster and consume m... read moreuch less power than their active
counterparts have been scaled down with help from metamaterials and nanofabrication.
Comparing to the traditional, bulky radio frequency ferrite device, their microwave
cousins are promising candidates for a critical role in the aforementioned high speed
applications. This thesis presents a complete design, simulation, fabrication and
testing of a self-bias, magnetic circulator operating at 60GHz. It features 15dB
isolation, 2mm by 2mm size and potential of further integration with CMOS or GaN
technology. Simulated and measured results are presented and analyzed together with a
detailed fabrication recipe and step by step microscopic photos. This device can be used
in applications such as integrated transceiver, phased array radar system, air traffic
control and navigation.
Thesis (M.S.)--Tufts
University, 2017.
Submitted to the Dept. of
Electrical Engineering.
Advisor: Mohammed
Afsar.
Committee: Mohammed Afsar, Valencia Koomson,
and Austin Napier.
Keyword: Electrical
engineering.read less
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