Multiband receiver for Gb/s communication at mm-wave frequencies

A low power receiver at V band for multi users Gb/s communication is reported. The device operates in three bands from 52GHz to 57GHz. The die includes a wide band LNA, a sub harmonic mixer, an IF amplifier and a driver to 50 Ohm output load. The direct conversion architecture was chosen to achieve a high adjacent channel rejection. The receiver requires an external lower frequency LO signal thanks to the sub-harmonic mixer. The LNA consumes 32mW and achieves a peak gain of 14dB and a minimum NF of 5dB. Its 3dB measured bandwidth is 37% (52-75GHz). The whole receiver consumes 76mW and achieves a maximum conversion gain of 29dB with a high IF bandwidth of 2.5GHz in an area of 0.3mm2.