Masanori Ejima

UWB automotive radar to mitigate impact on radio services using restricted band

A novel UWB SRR complying with the FCC new spectrum mask, and its key components, a carrier-leak-free BO, an antenna with notch filtering function, has been described. Furthermore, an incoherent receiving system which consists of SLD, variable gain LNA, SH has been presented, enabling simple and low-cost SRR. We make further efforts for developing simpler SRR with one-chip Tx- and one-chip Rx-modules.

UWB Radar RF Front-End to Mitigate Impacts on EESS and Radio Astronomy

A novel UWB short-range radar (SRR) which effectively mitigates its impacts on radio services using the restricted band such as radio astronomy or Earth Exploring Satellite Service is introduced. The essential components, a burst oscillator generating no carrier leak, and antennas with notch-filtering function are presented in detail. Other key MMICs, such as a high-speed square-law detector, variable gain LNA, a sample-hold circuit, etc. are also described with the performances of the SRR