LONDON – Researchers the Institute of Microelectronics (IME) in Singapore have developed a silicon-based cavity-backed slot antenna that has demonstrated a 30 times stronger signal transmission over on-chip antennas at 135-GHz.
Measuring 1.6-mm by 1.2-mm, it is the smallest silicon-based CBS antenna reported to date for ready integration with active circuits, the developers claim. The antenna, in combination with other millimeter-wave building blocks, can support wireless speed of 20-Gbits per second, more than 200 times faster than present day Wi-Fi.
"The novel use of polymer filling enables more than 70 percent antenna size shrinkage and a record high gain of 5.68-dBi at 135-GHz," Hu Sanming, the researcher leading the antenna project at IME. "By filling the antenna cavity with polymer instead of air, we can achieve a flat surface for subsequent processing by standard technology that is amenable to mass production," he added.
Sanming added that the IME team has designed a three-dimensional technique to integrate the antenna with active circuits to form a fully integrated wireless millimeter-wave system-in-package that maintains high performance with low susceptibility to electromagnetic interference.
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