Improved MMIC active filters based on passive LC resonators with active negative resistance circuits

Author

Kaunisto, Risto ; Webster, Danny ; Haigh, David

Author_Institution

Electron. Circuit Design Lab., Helsinki Univ. of Technol., Espoo, Finland

fYear

1996

fDate

35398

Firstpage

42430

Lastpage

42435

Abstract

A new GaAs MMIC active resonator employing negative resistance compensation for the passive inductor has been designed. The power consumption has been minimised, and sensitivities to parasitic effects and supply voltage variations have been reduced. In the light of the study carried out in this paper, the new resonator has the potential to achieve significantly lower noise figures than active inductor based filters, providing the passive components have sufficiently good quality factor. A prototype 2.4 GHz resonator was fabricated with the GMMT F20 MMIC process. Measured results show that a maximum power of 9.5 dBm can be handled, whilst drawing only 27 mW from a 3 V supply

Keywords

field effect MMIC; 2.4 GHz; 27 mW; 3 V; GMMT F20 MMIC process; GaAs; MMIC active filters; MMIC active resonator; active negative resistance circuits; negative resistance compensation; noise figures; parasitic effects; passive LC resonators; passive inductor; power consumption; quality factor; supply voltage variations;

fLanguage

English

Publisher

iet

Conference_Titel

Advanced Signal Processing for Microwave Applications (Digest No.: 1996/226), IEE Colloquium on

Conference_Location

London

Type

conf

DOI

10.1049/ic:19961209

Filename

640298