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Technique for Improving Settling Time of a Radio Receiver

IP.com Disclosure Number: IPCOM000108407D
Publication Date: 2005-Mar-22
Document File: 2 page(s) / 38K

Publishing Venue

The IP.com Prior Art Database

Abstract

The present disclosure addresses the need to improve settling time of a radio receiver found in low power wireless telecommunication devices. The type of wireless communication devices which carry such radio receiver include, but are not limited to, computer peripherals, security systems, thermostats, low power network devices, telemetry systems, battery operated network interfaces such as Bluetooth and wireless Ethernet, and personal communications devices such as pagers and mobile telephones. The proposed technique of the present disclosure permits the circuitry within the radio receiver to settle quickly without compromising the decoupling among the circuits.

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Technique for Improving Settling Time of a Radio Receiver

Background

                    The present disclosure relates to wireless telecommunication devices, in particular, to a radio receiver having low frequency radio circuits.  The radio receiver requires very low frequency decoupling circuits, which can take a relatively long time to settle prior to becoming stable.  The type of wireless communication devices which carry such radio receiver include, but are not limited to, computer peripherals, security systems, thermostats, low power network devices, telemetry systems, battery operated network interfaces such as Bluetooth and wireless Ethernet, and personal communications devices such as pagers and mobile telephones.

                    The radio receiver within the mobile phone for example, can generate an undesirable DC offset that adversely affects or increases a transient settling time while searching for channel activity.  The transient settling time or start-up time is the length of time required within a filter to reduce the undesirable DC offset to an acceptable level before being able to output a desired signal from the radio receiver.  The proposed technique of the present disclosure permits the circuitry within the radio receiver to settle quickly without compromising the decoupling among the circuits.

Description

                    The present disclosure addresses the need to improve settling time of a radio receiver found in low power wireles...