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1. US20090253456 - DUAL BAND RECEIVER WITH CONTROL MEANS FOR PREVENTING SIGNAL OVERLOADING

Office United States of America
Application Number 12306166
Application Date 12.06.2007
Publication Number 20090253456
Publication Date 08.10.2009
Publication Kind A1
IPC
H04B 7/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
H04B 1/06
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
06Receivers
H04M 1/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
MTELEPHONIC COMMUNICATION
1Substation equipment, e.g. for use by subscribers
Applicants NXP B.V.
Inventors Toh Yeow Teng
Kwong Kam Choon
Agents NXP, B.V.;NXP INTELLECTUAL PROPERTY &; LICENSING
Priority Data 06115911 22.06.2006 EP
Title
(EN) DUAL BAND RECEIVER WITH CONTROL MEANS FOR PREVENTING SIGNAL OVERLOADING
Abstract
(EN)

A portable dual band receiver (D), intended for equipping a mobile equipment, comprises a first antenna (AN1), a second antenna (AN2), a two-states switching means (SW) connected to the first (AN1) and second (AN2) antennas and arranged to deliver either first signals comprised into a first band when it is set into a first state or second signals comprised into a second band when it is set into a second state, at least one low noise amplifier (A1, A2) arranged to amplify the signals delivered by the switching means (SW), a processing means (PM) arranged to process the signals outputted by the low noise amplifier(s) (A1,A2) either in a first mode or in a second mode, and a control means (CM) arranged, when the processing means (PM) works in the second mode, to determine which of the first (AN1) and second (AN2) antennas induces the best reception quality into the processing means (PM), and to set the switching means (SW) in the state which allows it to deliver the signals received by the antenna that it has determined.