A study for milimeter-wave oscillation and radiation in integrations of resonant tunneling structures and fine thin-filn antennas

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1. Studies on triple-barrier resonant tunneling diodes (TBRTDs)1-1) Variable capacitance characteristics on GaInP/GaAs triple-barrier resonant tunneling diodes were investigated.1-2) Shortly collector GaInP/GaAs TBRTDs were fabricated and characterized.1-3) Noise properties and microwave imposed characteristics on GaInP/GaAs TBRTDs were studied.1-4) SPICE model for TBRTDs are proposed by physics based expression of current-voltage characteristics1-5) Fast atom beam etching process were investigated to form semiconductor mesa structures1-6) Structural design of TBRTDs by introducing estimation function2. Study for planar on-chip spiral inductors2-1) Size roduction rule of spiral inductors are investigated focusing on the inductance and the quality factor.3. Studies on self-complimentary antenna3-1) Effect of feeding port structure on radiation properties of log-periodic spiral antennas are studied.3-2) Teraherz radiation properties of bow tie antenna are studied and the equivalent circuit model is evaluated.