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.
The multipath propagation of millimeter waves are complicated in the near field. Unknown obstacles in side the area will create different delayed signals compared with the main signal. At 135 Ghz this needs to be tested practically and to be verified with the simulated results. if it goes well then for future we get miniaturized communication systems for our use with big bandwidth and in turn faster communications.