A new concept: an electronically tunable MMIC flatness corrector

Author

Labarre, F. ; Cazaux, J.L. ; Goldztejn, C. ; Pichon, N. ; Soulard, M.

Author_Institution

Alcatel Espace, Levallois-Perret, France

fYear

1991

fDate

10-14 July 1991

Firstpage

285

Abstract

A novel concept resulting in a good insertion gain flatness in receiver applications is reported. The idea is based on inserting into a chain a device with an attenuation characteristic equal and opposite to the gain variation of the rest of the chain. An electronically tunable flatness corrector composed of coupled lines controlled by varactors has been realized in the Ku-band. This idea has been applied in a hybrid circuit used in a space telecommunications receiver. Insertion losses of 0.25 dB, dynamic correction of 1.5 dB, and input/output return losses of better than 15 have been measured.<>

Keywords

MMIC; gain control; receivers; tuning; varactors; 0.25 dB; 15 dB; Ku-band; MMIC; attenuation characteristic; coupled lines; electronically tunable; flatness corrector; hybrid circuit; insertion gain flatness; receiver applications; space telecommunications receiver; varactors; Coupling circuits; FETs; Filters; Insertion loss; Loss measurement; MMICs; Resonance; Resonant frequency; Tunable circuits and devices; Varactors;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 1991., IEEE MTT-S International

Conference_Location

Boston, MA, USA

ISSN

0149-645X

Print_ISBN

0-87942-591-1

Type

conf

DOI

10.1109/MWSYM.1991.146984

Filename

146984