H - Electricity – 03 – L
Patent
H - Electricity
03
L
H03L 7/093 (2006.01) H04J 3/06 (2006.01)
Patent
CA 2270192
Apparatus (82), and an associated method (202), for calibrating a device (44) responsive to values of a reference signal (89). The reference signal may be subject to short-term disturbances. In one implementation, a cellular radio base station utilizes a Stratum-2 oscillator (84) to which to phase-lock a base station VCO (44). Compensation is made for the aging of the Stratum-2 oscillator, thereby to provide a regulation signal causing the VCO to exhibit acceptable short term and long-term frequency stability characteristics.
L'invention concerne un appareil (82) et un procédé (202) associé destinés à étalonner un appareil (44) sensible aux valeurs d'un signal (89) de référence. Le signal de référence peut subir des perturbations de courte durée. Selon une mise en oeuvre, une station de base radio cellulaire utilise un oscillateur (84) Stratum-2 auquel on asservit en phase un oscillateur (44) commandé en tension de station de base. On compense le vieillissement de l'oscillateur Stratum-2, ce qui a pour effet l'émission d'un signal de régulation, par lequel l'oscillateur commandé en tension présente des caractéristiques de stabilité de fréquence acceptables à court et à long terme.
Lindskog Mats Kristian
Osterling Jacob Kristian
Marks & Clerk
Telefonaktiebolaget Lm Ericsson
LandOfFree
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