H - Electricity – 03 – F
Patent
H - Electricity
03
F
H03F 3/16 (2006.01) H03F 3/193 (2006.01) H03F 3/195 (2006.01) H04Q 7/32 (2006.01)
Patent
CA 2154584
The amplifier (201) uses transistors (301, 303) such as MOSFET transistors, in a current mirror configuration. The transistors (301, 303) are easy to package as surface mount devices. The output power of the amplifier (201) is controlled by controlling the bias current flowing through the amplifier stage (201). Additionally, the amplifier has low sensitivity to the variations of the bias current to the control signal threshold. These characteristics make the amplifier ideal for use in a radio transmitter, such as a radiotelephone (103).
L'amplificateur (201) utilise des transistors (301, 303) tels que des transistors MOSFET, dans une configuration en miroir de courant. Les transistors (301, 303) sont faciles à implanter sous la forme de dispositifs à montage en surface. La puissance de sortie de l'amplificateur (201) est gérée par régulation du passage du courant de polarisation dans l'étage amplificateur (201). De plus, l'amplificateur présente une faible sensibilité aux variations du courant de polarisation jusqu'au seuil du signal de commande. Ces caractéristiques rendent l'amplificateur idéal à une utilisation dans un émetteur radio tel qu'un radiotéléphone (103).
Gowling Lafleur Henderson Llp
Motorola Inc.
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