An ultra-wideband MMIC balanced frequency doubler using line-unified HEMTs

Author

Takenaka, Tsutomu ; Ogawa, Hiroyo

Author_Institution

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

Volume

40

Issue

10

fYear

1992

fDate

10/1/1992 12:00:00 AM

Firstpage

1935

Lastpage

1940

Abstract

A very small, ultrawideband, MMIC balanced frequency doubler that uses line-unified HEMT configurations is proposed. A chip size of 1.0 mm×0.9 mm is achieved with a conversion loss of 8-10 dB in the 4-40-GHz output harmonics frequency range and fundamental frequency signal isolation of better than 21 dB above the input fundamental frequency of 7 GHz. Circuit parameters are optimized in a novel and simple prediction using an equation derived from the HEMT´s DC characteristic and a linear-state CAD software package. The doubler has promise for realizing miniaturized, wideband MMIC transmitters/receivers

Keywords

MMIC; equivalent circuits; field effect integrated circuits; frequency multipliers; high electron mobility transistors; 4 to 40 GHz; 8 to 10 dB; balanced frequency doubler; line-unified HEMTs; monolithic microwave IC; ultra-wideband MMIC; ultrawideband; Circuits; Coplanar waveguides; Frequency; HEMTs; Impedance matching; MMICs; MODFETs; Microwave FETs; Slotline; Ultra wideband technology;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.159631

Filename

159631