Divider and combiner line-unified FET´s as basic circuit function modules. I

Author

Tokumitsu, Tsuneo ; Hara, Shinji ; Takenaka, Tsutomu ; Aikawa, Masayoshi

Author_Institution

ATR Opt. & Radio Commun. Res. Lab., Japan

Volume

38

Issue

9

fYear

1990

fDate

9/1/1990 12:00:00 AM

Firstpage

1210

Lastpage

1217

Abstract

The purpose is to realize miniaturized and broadband function blocks with very simple configurations for multifunction monolithic microwave circuits. FET-sized combiners and dividers, in phase and out of phase, based on a novel line-unified-FET (LUFET) concept are described and demonstrated. Some effective extensions such as extended combiner LUFETs, magic T LUFETs, and phase inverter LUFETs are also described. The extension of the basic combiner and divider LUFETs allows the realization of various circuit functions in a very small area. The area of fabricated LUFETs is between 0.1 and 0.3 mm², and the operating frequency bandwidth approaches 20 GHz. The LUFET mitigates the size and complexity problems considerably and expands the application of combiners and dividers to various multifunction microwave monolithic integrated circuits (MMICs)

Keywords

MMIC; Schottky gate field effect transistors; field effect integrated circuits; solid-state microwave devices; waveguide components; 1 to 18 GHz; LUFET; MMICs; broadband function blocks; circuit function modules; combiners; dividers; line-unified-FET; magic T LUFETs; multifunction monolithic microwave circuits; operating frequency bandwidth; phase inverter LUFETs; Bandwidth; Circuits; Distributed amplifiers; Electrodes; Frequency conversion; Laboratories; MMICs; Microwave FETs; Optical amplifiers; Radio communication;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.58645

Filename

58645