|1.||Optimized circuit for intra-connection on CMOS-LSIs|
|Sony has drawn on its years of experience in radio frequency technologies to realize compact, low power, millimeter-wave circuits optimal for use in intra-connection over CMOS-LSIs. Due to the small footprint of just 0.13mm2 the circuits can be built into a single chip, at very low cost.|
|2.||Injection lock method*2 realizes small size, low power consumption and sufficient transmission range for intra-connection.|
|Synchronized detection, which aligns the receiver with the transmitted carrier frequency, is an effective means of providing sufficient transmission range for intra-connection, while also ensuring low power consumption. However, the PLL (Phase Locked Loop) generally used for this synchronization has the disadvantage of requiring large, power-consuming circuitry to transmit at millimeter-wave frequency. By adopting an injection lock system that eliminates PLL, Sony has enabled synchronized detection over small size circuits, while also minimizing power consumption and providing sufficient transmission range for successful intra-connection.
This technology, used together with miniature antennas approximately 1mm in length, enable transmission speeds of 11Gbps over a distance of 14mm, with power consumption of 70mW. It is possible for this distance to be extended to around 50mm using high directivity antennas.
*1 Based on Sony research (as of January, 2010)
*2 A method of synchronization that injects incoming signals into the receiver's oscillator, and then aligns the oscillator to that signal.