COMPACT MULTI BAND METAMATERIAL FEEDING APPARATUS AND MINIATURE MULTI BEAM FORMING AND SCANNING ANTENNAS USING THE SAME

摘要

The present invention relates to a technique for a feeding apparatus using a Butler matrix/Hadamard matrix for reducing the interface from an adjacent small cell and to effectively operate power for next generation wireless communication, and an antenna for a multibeam/beam scanning using the same. According to a compact multiband metamaterial feeding apparatus includes a double band phase shifter where a composite right-handed wave left-handed wave (CRLH), a blanch line coupler of CRLH double band, and a balance type crossover of the CRLH double band.