Graduate Thesis Or Dissertation
 

IC-Antenna Co-Integration for Efficient and Scalable Millimeter-Wave Antenna Interfaces

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/x920g304w

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  • Millimeter-wave (mm-wave) technology promises high speed, high system capacity and low latency interconnects with reduced cost. Applications like high data-rate wireless links, next generation automotive sensors and security body scanners highly depend on mm-wave technology innovations. As operating frequency moves to higher mm-wave bands, shrinking antenna dimensions enable co-integration of IC and antenna. Limited transistor output power at mm-wave requires multi-element arrays to satisfy communication and radar link budgets. This dissertation presents a wafer-scale compatible IC-antenna co-integration for efficient and scalable mm-wave antenna interfaces. The proposed IC-antenna co-integration approach is demonstrated through single antenna transmitters, a concurrent dual-polarization receiver front-end and polarization-duplex transmitter/receiver front-end. Chapter 2 discusses the challenge of mm-wave IC-antenna interfaces with prior art including antenna-in-package (AiP) and on-chip antennas. The 60 GHz efficient, scalable and wafer-scale compatible IC-antenna co-integration approach is presented demonstrating wide bandwidth and large efficiency which are comparable to system-level AiP techniques at a lower cost and fabrication complexity. Chapter 3 extends the proposed approach to a concurrent 60 GHz dual-polarization receiver front-end for short-range imaging/communication applications and polarization diversity based MIMO links. Active cancellation between orthogonal polarizations is adopted to achieve ∼ 30 dB cross-polarization leakage cancellation and concurrent dual-pol reception. Chapter 4 presents a 60 GHz simultaneous transmit and receive front-end to achieve efficient polarization-duplex operation based on dual-polarization IC-antenna co-integration. Transmitter leakage is suppressed at receiver input and output by intrinsic antenna isolation and a feed-forward passive canceller. Total average self-interference cancellation >40 dB is achieved for 1.07 GHz RF bandwidth at 60 GHz in the presence of a reflector.
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  • I would like to thank the Center for Design of Analog-Digital Integrated Circuits (CDADIC) for the research funding support.
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