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Apparatus for sharing CDMA scheme and japanese cdma scheme in communication system

A communication system and code division multiple access technology, applied in the field of equipment sharing specific functional modules, can solve problems such as increasing the size and complexity of portable terminals

Inactive Publication Date: 2007-10-31
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] However, a conventional portable terminal uses an LNA and a mixer in a dual manner illustrated in FIG. 1, which increases the size and complexity of the portable terminal

Method used

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  • Apparatus for sharing CDMA scheme and japanese cdma scheme in communication system
  • Apparatus for sharing CDMA scheme and japanese cdma scheme in communication system

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Embodiment Construction

[0023] Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the subject matter of the present invention with unnecessary detail.

[0024] The present invention provides a portable terminal capable of using a CDMA communication system and a JCDMA communication system, and also provides an apparatus for sharing a common function in the portable terminal. Block diagram of the switch and RX function blocks of the portable terminal. Referring to Fig. 2, described portable terminal comprises: antenna 200, controller 201, first switch 203, CDMA multiplexer 205, JCDMA multiplexer 219, second switch 207, LNA 209, the 3rd switch 211 , CDMA RX BPF 213, JCDMA RX BPF 221, fourth switch 215, fifth switch 223, and mixer 217 (such as a CDMA 800MHz mixer).

[0025] Multiplexers 205 and 219 are connected ...

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Abstract

Provided is an apparatus for sharing specific functions in a portable terminal capable of selectively using one of a CDMA communication system and a JCDMA communication system. The portable terminal includes a first switch unit and a second switch unit. The first switch unit selectively separates one of a CDMA RX signal and a JCDMA RX signal from a signal received through an antenna and outputs the separated signal to a low-noise amplifier. The second switch unit separates a frequency band of the selected communication system from an output signal of the LNA to select a specific-band signal and outputs the specific-band signal to a mixer.

Description

technical field [0001] The present invention generally relates to sharing a specific function when selectively using a code division multiple access (CDMA) communication system and a Japanese CDMA (JCDMA) communication system, and more particularly, to an apparatus for sharing a specific function module in a portable terminal, The portable terminal can selectively use one of a CDMA communication system and a JCDMA communication system. Background technique [0002] With the gradual development of technologies for manufacturing portable terminals, portable terminals capable of operating in heterogeneous communication systems are being developed. A currently commercial CDMA communication system in Korea uses a reception (RX) frequency band of approximately 824-849 MHz and a transmission (TX) frequency band of approximately 869-894 MHz when using a frequency band below 1 GHz. [0003] Unlike the Korean CDMA communication system, JCDMA uses a frequency band of 800 MHz, but uses...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J13/00H04B1/40H04Q7/32H04B1/3822H04B1/692H04B1/707
CPCH04B1/406H04B2201/7071H04B1/707H04W88/06
Inventor 金钟溶朴在善金基德李成旭
Owner SAMSUNG ELECTRONICS CO LTD