Masakazu Muraguchi

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A miniaturized MMIC analog phase shifter using two quarter-wave-length transmission lines is described. The number of transmission lines it uses is half that of a conventional analog phase shifter, which uses a 3-dB 90/spl deg/ branch-line hybrid. The chip size of the experimental GaAs MESFET MMIC analog phase shifter is less than 0.71 mm/sup 2/, and a(More)
19 GHz-band GaAs MESFET switch ICs have been demonstrated, intended for use in high-speed wireless LAN systems. The FET channel is fabricated on a SiO/sub 2/ insulator in order to reduce parasitic FET drain-source capacitance (Cds) which acts as off-state capacitance (Coff) in switches. The LOXI (Layered-Oxide-Isolation)-MESFET has enough DC and RF(More)
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