Efficient mm-Wave Antenna-On-Chip through Effective Illumination of Integrated Artificial Magnetic Conductor

Yiyang Yu, Atif Shamim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Artificial magnetic conductors (AMC) employed underneath the antenna-on-chip (AoC) can provide the in-phase reflection as well as the isolation from the lossy silicon substrate. The gain of an AMC-backed AoC is proportional to the AMC area. However, the relatively large AMC cannot be illuminated effectively due to the limited space in the stack-up. This means the AMC-backed AoC cannot achieve its optimum performance. In this paper, we propose to resolve this issue through custom-designed coupling enhancement structures (CESs), which enable the energy coupling from the well-illuminated unit cells (in the center) to the less or non-illuminated unit cells (at the peripheries). Compared to a conventional AMC, the proposed CES-based AMC enhanced the AoC gain by 3.5 dB and radiation efficiency by 23% at 94 GHz. The fabricated prototype of the proposed AMC-backed AoC demonstrated a gain of 9.8 dBi which was 25 times greater than an AoC without AMC.
Original languageEnglish (US)
Title of host publication2023 17th European Conference on Antennas and Propagation (EuCAP)
PublisherIEEE
DOIs
StatePublished - May 31 2023

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