Ultra-Thin Artificial Magnetic Conductor for Gain Enhancement of Antenna-on-Chip
نویسندگان
چکیده
System-on-chip (SoC) has become an attractive solution to achieve highly integrated wireless systems. However, the antenna-on-chip (AoC) suffers from poor radiation due lossy silicon substrate in standard complementary metal–oxide–semiconductor (CMOS) processes. Artificial magnetic conductors (AMCs) with ground plane above can enhance radiation; however, fitting AMC completely thin stack-up (~10–15 $\mu \text{m}$ ) is extremely challenging, particularly for frequencies below 100 GHz. In this article, metallic posts (MPs) and embedded guiding structures (EGSs) have been investigated reduce thickness by employing available vias metal layers stack-up. An in-house CMOS-compatible process used realize AoC, where typical low-conductivity adhesion avoided undesired losses using surface roughness a unique fashion. With MP EGS approaches, be reduced 33% 41%, respectively. The fits within oxide of 16 . A monopole antenna, backed AMC, demonstrates gain 5.85 dBi efficiency 57% at 94 GHz, bettering 9.15 dB 42%, respectively, compared case without AMC.
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ژورنال
عنوان ژورنال: IEEE Transactions on Antennas and Propagation
سال: 2022
ISSN: ['1558-2221', '0018-926X']
DOI: https://doi.org/10.1109/tap.2022.3140528