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Mobile communication terminal and signal receiving method thereof

A mobile communication terminal and signal technology, applied in wireless communication, telephone communication, diversity/multi-antenna system, etc., can solve the problems of reducing radio frequency receiving sensitivity, satellite signal influence, and 1.57GHz GPS signal influence

Inactive Publication Date: 2008-07-30
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, when using the three-band antenna, the main interference signal between the 1.57GHz GPS signal and the 824-896MHs CDMA signal falls between the 2.39-2.47GHz frequency band, thus affecting the 2.6GHz DMB satellite signal
Moreover, the main interference signal between CDMA and DMB satellite signals falls between the 1.78-1.70GHz frequency band, thus affecting the 1.57GHz GPS signal
[0010] In addition, in the case of using the GPS antenna independently, the three antennas coexisting in a mobile communication terminal form a bipolar interference with each other on the radio frequency sensitivity to reduce the radio frequency receiving sensitivity.

Method used

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  • Mobile communication terminal and signal receiving method thereof
  • Mobile communication terminal and signal receiving method thereof

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Embodiment Construction

[0028] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

[0029] FIG. 2 is a block diagram of a mobile communication terminal according to a preferred embodiment of the present invention.

[0030] Referring to Fig. 2, the mobile communication terminal according to a preferred embodiment of the present invention comprises: the CDMA-DMB dual-band antenna 21 that is used to receive CDMA or DMB signal; The DMB-GPS dual-band antenna 22 that is used to receive DMB or GPS signal; A first antenna duplexer 23 for separating the CDMA or DMB signals received by the CDMA-DMB dual-band antenna 21; a second antenna duplexer 24 for separating the DMB or GPS signals received by the DMB-GPS dual-band antenna 22; Select the DMB chipset 29...

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Abstract

A mobile communication terminal and signal receiving method thereof are disclosed, by which GPS and DMB signals can be received using a dual band antenna. The present invention includes a CDMA-mobile broadcast dual band antenna receiving a CDMA or mobile broadcast signal, a mobile broadcast-GPS dual band antenna receiving a mobile broadcast of GPS signal, a first means for diverging the CDMA or mobile broadcast signal received by the CDMA-mobile broadcast dual band antenna, a second means for diverging the mobile broadcast or GPS signal received by the mobile broadcast-GPS dual band antenna, and a third means for selecting either the mobile broadcast signal outputted from the first means or the mobile broadcast signal outputted from the second means if the selected mobile broadcast signal has a signal quality better than that of the non-selected mobile broadcast signal.

Description

technical field [0001] This application claims the benefit of Korean Patent Application No. 10-2004-0096334 filed on November 23, 2004, the contents of which are incorporated herein by reference as if fully set forth. [0002] The present invention relates to a mobile communication terminal, and more particularly to a mobile communication terminal and a signal receiving method thereof. Although the present invention is suitable for a wide range of applications, it is particularly suitable for receiving GPS and mobile broadcast signals by preventing interference between wireless signals received via a dual-band antenna. Background technique [0003] In general, the standards for mobile broadcasting include FLO (Forward Link Only) proposed by Qualcomm in the United States, DVB-H proposed by Nokia in Europe, and DMB in Korea based on European Digital Audio Broadcasting (DAB). (Digital Multimedia Broadcasting). The DMB is chosen to be explained in the description below. DMB a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/18H04B1/10H04B1/40H04B7/08H04B17/40H04M1/00
CPCH04B1/0057H04B1/406H04B1/3805H04B7/082H04W88/06
Inventor 朱圣浩
Owner LG ELECTRONICS INC