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Millimeter-wave multi-port transceiver architectures dedicated to 60 GHz UWB short-range communications are proposed in this paper. Multi-port circuits based on 90 degree? hybrid couplers are intensively used for phased antenna array, millimeter-wave modulation and down-conversion, as a low-cost alternative to the conventional architecture. This allows complete integration of circuits including antennas, in planar technology, on the same substrate, improving the overall transceiver performances. With the rapid growth of wireless technologies, ubiquitous and always-on wireless systems in homes and enterprises are expected to emerge in the near future.
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