Broadband and tunable negative monolithic circuits for microwave active filters compensation

Broadband and tunable negative monolithic circuits for microwave active filters compensation

In this article, GaAs MMIC negative resistance chips are presented. These devices are used to improve the performances of planar microstrip resonator structures. The broadband capabilities of these negative resistance circuits are illustrated with their use to compensate for the losses of two 4-pole...

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Bibliographische Detailangaben
Hauptverfasser: Brucher, A., Meunier, P., Cenac, C., Jarry, B., Guillon, P.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Active filters
Band pass filters
Dielectric substrates
Gallium arsenide
Microstrip filters
Microstrip resonators
Microwave circuits
Microwave devices
MMICs
Tunable circuits and devices
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Beschreibung
Zusammenfassung:In this article, GaAs MMIC negative resistance chips are presented. These devices are used to improve the performances of planar microstrip resonator structures. The broadband capabilities of these negative resistance circuits are illustrated with their use to compensate for the losses of two 4-pole bandpass microstrip half wave filters designed with alumina substrate and centered respectively at 1.5 GHz and 4 GHz. Finally, experimental results of bandstop active filters built on lossy high permittivity dielectric substrate (/spl epsi//sub r/=36) and also compensated for with these monolithic circuits confirm their potential.< >
ISSN:0149-645X
2576-7216
DOI:10.1109/MWSYM.1995.406000