A Switchable Band RF/Analog Processing Single-Sideband Mixer for Distributed Array Phase Synchronization

In this article, a sideband switchable RF/analog processing single sideband (SSB) mixer is proposed to synchronize the phase in open-loop distributed array system. The proposed SSB mixer is composed of single balanced mixer, Wilkinson power divider, switches, transmission line delays, RF Hilbert transformer, and T-junction combiner. The design theory is developed for phase synchronization in distributed array based on the sequential switched sideband signal, and detail design approach is developed for the proposed RF/analog processing switchable SSB mixer. By switching the transmission line delays, different sidebands are controlled in the proposed SSB mixer. To verify the design concept, a prototype SSB mixer is designed and validated in simulation and experiment, and the results align well with design theory. Different from other SSB mixer, this is first time a RF/analog processing switchable band SSB mixer is proposed to show great potential for exploring novel wireless communication technique.