An ultra-wideband transmit/receive module using 10 to 35 GHz six-channel microstrip multiplexers and its applications to phased-array antenna transceiver systems

摘要

This dissertation introduces new and simple techniques for suppression of multispuriouspassbands, which are inherent to the conventional microstrip parallel couplelinebandpass filters. In addition, the operation of harmonic suppression is analyzedusing a simple model.Special emphasis is placed on the applications of several new filter designs formicrostrip diplexers and multiplexers. Compact, full-duplex beam scanning antennatransceiver systems with extremely broad bandwidth have also been developed.Recent advances in broadband monolithic microwave integrated circuit (MMIC)amplifiers make the realization of extremely broadband phased-array transceiver systemspossible. The ultra-wideband phased-array transceiver systems can be used in multi-bandmobile satellite communication systems and wideband radars. This dissertation presentsa multi-band, compact, full-duplex, beam scanning antenna transceiver system forsatellite communications and two designs of ultra-wideband, low-cost radar systems asapplications of the MMIC amplifiers. In addition, a multi-frequency antenna has been developed. A single-feed triplefrequency microstrip patch antenna is presented as an answer to the recent demand formulti-function systems in the wireless communications.In summary, the research presented in this dissertation covers every componentrequired to build an ultra-wideband, full-duplex beam scanning phased-array antennatransceiver. The work done in this dissertation should have many applications in thewireless communication systems and wideband radar technologies.