Title :
Multilayer MMIC branch-line hybrid using thin dielectric layers
Author :
Banba, Seiichi ; Hasegawa, Takao ; Ogawa, Hiroyo
Author_Institution :
ATR Opt. & Radio Commun. Res. Lab., Kyoto, Japan
Abstract :
A miniature monolithic microwave integrated circuit (MMIC) branch-line hybrid circuit utilizing a multilayer structure composed of thin-film transmission lines is proposed. The branch-line hybrid circuit is designed for a center frequency of 20 GHz and fabricated in a 0.49-mm*0.53-mm area. A coupling loss of 5.5 dB+or-0.5 dB over a 3-GHz bandwidth is achieved.<>
Keywords :
MMIC; strip line components; 20 GHz; 3 GHz; 5.5 dB; MMIC; SHF; branch-line hybrid; coupling loss; monolithic microwave integrated circuit; multilayer structure; thin dielectric layers; thin-film transmission lines; Coupling circuits; Dielectric thin films; Distributed parameter circuits; Frequency; Hybrid integrated circuits; MMICs; Microwave integrated circuits; Monolithic integrated circuits; Nonhomogeneous media; Thin film circuits;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
