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Method for a wave propagation channel for an interchip wireless interconnect

IP.com Disclosure Number: IPCOM000033858D
Publication Date: 2004-Dec-30
Document File: 3 page(s) / 48K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method for a wave propagation channel for an interchip wireless interconnect. Benefits include improved performance and improved ease of implementation.

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Method for a wave propagation channel for an interchip wireless interconnect

Disclosed is a method for a wave propagation channel for an interchip wireless interconnect. Benefits include improved performance and improved ease of implementation.

Background

      The number of processed input/out (I/O) transactions is expected to increase. Recently developed frequency and code division multiplexing can be used to replace the I/Os with wireless channels, which reduces I/O counts while maintaining the parallel I/O architecture. However, some key issues for this type of interconnect scheme are the wave transmission and reception associated with overhead and latency. Research topics, such as cellular networks and beam forming, are on-going. However, no ideal solution makes the architecture work perfectly.

              Transmitter/receiver designs enable wireless interconnection for high-speed I/O. Optimal wave propagation channels and high-efficiency antennas are two of the bottlenecks to qualify the entire signal path.

      Conventionally, the problem is solved by improving reception/transmission (RX/TX) efficiency and improving coding schemes, such as code division multiple access (CDMA) modulation.

      For example, the wireless interconnect scheme can be applied to a multiple die system. (Assume several antennas are used for the system.) The conventional solution includes building antennas underneath heatsink. However, the efficiency of this type antenna is low. Moreover, with multiple wave scattering and reflections, the overhead and latency are difficult to handle on the receiver side (see Figures 1 and 2).

General description

              The disclosed method enhances wave propagation efficiency so that waves received at the receiver point have a strong and clean waveform.

              The key elements of the method include:

•             Motherboard (MB) backside as a wave channel

•             Smart antenna, such as a patch antenna etched on the MB

•             Electromagnetic interference (EM...