H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 1/40 (2006.01) H03G 3/30 (2006.01) H04B 7/005 (2006.01) H04Q 7/32 (2006.01)
Patent
CA 2148600
METHOD AND APPARATUS FOR STABILIZING THE GAIN OF A CONTROL LOOP IN A COMMUNICATION DEVICE Abstract of the Disclosure A gain stabilization loop performs discrete time adjustments to the RF amplifier forward gain path of a closed-loop transmitter power control system based on a measurement of the gain in the control loop. The stabilization of the RF amplifier gain allows the transmitter's control loop to remain functional over varying gain conditions which are prevalent within stages of the RF amplifier gain path. The effects of gain changes within the stages due to part-to-part variations and temperature effects are minimized or eliminated by this gain trimming.
Une boucle de stabilisation de gain exécute des ajustements de temps discrets sur le chemin de gain vers l'avant, de l'amplificateur RF (210, 212, 214, 302, 216, 218) d'un circuit de régulation de puissance (300) d'un émetteur à boucle fermée sur la base d'une mesure du gain dans le circuit de régulation. La stabilisation du gain de l'amplificateur RF (210, 214, 216) permet que le circuit de régulation de l'émetteur reste fonctionnel dans des conditions de gain variable qui sont prédominantes dans des étages (210, 214, 216) du chemin de gain de l'amplificateur RF (210, 212, 214, 302, 216, 218). Les effets des modifications de gain dans les étages (210, 214, 216), dus aux variations de pièce à pièce et aux effets de température, sont réduits ou éliminés par cet ajustage de gain.
Bontrager Paul R.
Holoubek Kevin J.
Keniuk Richard J.
Gowling Lafleur Henderson Llp
Motorola Inc.
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