H - Electricity – 03 – F
Patent
H - Electricity
03
F
H03F 3/45 (2006.01)
Patent
CA 2201624
A low noise linear amplifier and a microwave voltage controlled oscillator constructed from such amplifier. Each amplifier within the VCO utilizes a ratioed transistor configuration to generate a linear output over a wide range of inputs. Output current from the amplifier is split into a main output current and components of in-phase and 180· out-of-phase current. A logarithmic tuning control combines the components of in-phase and 180· out-of- phase currents in inverse ratio to provide a constant d.c. feedback current.
Amplificateur linéaire à faible bruit et oscillateur hyperfréquence commandé en tension construit à partir dudit amplificateur. Chaque amplificateur de l'oscillateur utilise une configuration de transistor à rapport pour générer une sortie linéaire sur une large gamme d'entrée. Le courant de sortie de l'amplificateur est divisé en un courant principal de sortie et des composantes de courant en phase et déphasées à 180~. Une commande d'accord logarithmique combine les composantes des courants en phase et déphasées à 180~ en rapport inverse pour fournir un courant de rétroaction continu constant.
de Wilton Angela C.
Nortel Networks Limited
Northern Telecom Limited
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