SWITCHED-BEAM END-FIRE PLANAR ARRAY AND INTEGRATED FEED NETWORK FOR 60-GHZ CHIP-TO-CHIP SPACE-SURFACE WAVE COMMUNICATIONS

摘要

A multichip system includes a plurality of processor chips each having one or more cores and a plurality of antenna module for establishing interchip wireless communication. Each antenna module is disposed on a chip. At least one antenna module includes an antenna element array and a Butler matrix. The antenna element array includes n circular patch antenna elements for 360° degree end-fire scanning, where n is equal to 4 or a multiple thereof. The Butler matrix has n/4 submatrices. Each submatrix include two input 90o hybrids each having two outputs and two inputs for selectively receiving signals from a transceiver. The Butler matrix also includes two output 90° degree hybrids each having two outputs and two inputs. The two inputs of each output 90° degree hybrid are coupled to an output of different ones of the input 90° degree hybrids. Each output of the output 90° degree hybrids are coupled to a different antenna element.