Wireless Inter-Chip Signal Transmission by Electromagnetic Coupling of Open-Ring Resonators

Abstract

Low loss and wide bandwidth wireless signal transmission structure between IC chips is realized with electromagnetic coupling of open-ring resonators. Open-ring resonators are placed on separate sapphire substrate and they are stacked, then, microwave signals with the resonant frequencies are passed to the other resonator through sapphire substrate. With 960 mm diameter rings, 18 GHz band signals are transmitted through 200 mm sapphire substrate. The transmission losses were only À1:54 dB and the bandwidth was 4.8 GHz wide. Since the structure is simple and insensitive to misalignments, the structure will be conveniently used for wireless or non-contact signal transmission for short distances. #

An Ultra Compact GaN 3x3 Matrix Converter

“…1, we have proposed the compact one-chip isolated gate driver with Drive-By-Microwave technology, which provides isolated gate signal and gate power, all together. The gate driver converts the input PWM signal to the modulated RF signal by an internal RF oscillator and a mixer, and regenerates the isolated gate signal by rectifying the modulated RF signal that is wirelessly transmitted through an electromagnetic resonant coupler [8] to offer ground isolation. It ensures very large isolation voltage between primary and secondary side in the diver, because the low loss and long distance power transmission can be achieved by an electro-magnetic resonant coupling.…”

Effects of wetting to wireless power transmission by open-ring resonators coupling

“…Electromagnetic coupling of open-ring resonators (ECOR) is an efficient non-contact power transmission technology [1] which can transmit microwave power through plastic plates. Combining an efficient rectenna circuit with a GaN Schottky barrier diodes (SBD), this technology offers a convenient power transmission system for battery charging of these devices.…”

“…OPEN-RING RESONATOR STRUCTURE ECOR is being developed for wireless signal interconnection between high-speed integrated circuits [1]. The rings are λ/2 resonators with the diameter of λ/2π.…”

60 GHz Wireless Interconnection Using Electromagnetic Coupling of Open-Ring Resonators

“…We have proposed electromagnetic coupling of open-ring resonators (ECOR) for wireless signal transmission between insulating substrates and experimental results at 15 GHz [1] and simulation results at 60GHz have been presented. [2] Here, we present the successful experimental results at 60GHz range.…”