Title :
Very small, ultra-wideband MMIC magic-T and applications to combiners and dividers
Author :
Tokumitsu, T. ; Hara, Shinji ; Aikawa, Masayoshi
Author_Institution :
ATR Optical & Radio Commun. Res. Lab., Kyoto, Japan
Abstract :
An FET-size, 1-18-GHz MMIC (monolithic microwave integrated circuit) magic-T (180 degrees hybrid) which combines two different dividers, electrically isolated from each other, in a novel GaAs FET electrode configuration based on the LUFET (line-unified FET) concept is proposed. An advantage of the proposed magic-T is that it markedly reduces MMIC chip size and operates in an ultrawide band, due to the minimum use of GaAs FETs and the absence of spiral inductors. Applications of this module to miniaturized RF signal processing modules such as dividers, combiners, and switches are described.<>
Keywords :
MMIC; field effect integrated circuits; waveguide components; waveguide couplers; 1 to 18 GHz; FET electrode configuration; GaAs; MMIC chip size; RF signal processing modules; combiners; dividers; line-unified FET; switches; ultra-wideband MMIC magic-T; Electrodes; FET integrated circuits; Gallium arsenide; Hybrid integrated circuits; MMICs; Microwave FET integrated circuits; Microwave FETs; Microwave integrated circuits; Monolithic integrated circuits; Ultra wideband technology;
Conference_Titel :
Microwave Symposium Digest, 1989., IEEE MTT-S International
Conference_Location :
Long Beach, CA, USA
DOI :
10.1109/MWSYM.1989.38882
