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Technology of wireless connections between chips within a chip

28.02.2014

Packing multiple chips into a single package allows for greater integration, but it causes a lot of problems. One of them is the expensive procedure of wired connection of chips to each other. ThruChip specialists have developed a technology for wireless connections between chips within a ThruChip Interface (TCI) chip that can compete with interlayer connections (through-silicon via, TSV) between chips located on top of each other, and wire connections between chips located next to each other.

The idea behind TCI is the inductive interaction of circuits. The most important advantage of this approach is that it can be implemented using standard CMOS technology without any additional costs. The transceiver circuit is built with ordinary transistors, and the antennas are formed from metal conductors - the same as in the rest of the microcircuit. Moreover, you can place the antennas in a convenient part of the crystal.

The company, founded in 2007, has already tested its development on ten test chips. In particular, in one test, signals were transmitted through 128 layers using repeaters. The channel bandwidth reaches 1 TBit/s. Note that these connections are only suitable for data signals, not for power supplied through wired connections.

According to the developers, their technology is suitable for memory and other chips.

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