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Mobile communication terminal

A mobile communication terminal and signal technology, applied in the direction of amplifiers, electrical components, amplification control, etc., can solve the problems of signal quality degradation and interference with the main signal transmission channel, etc.

Inactive Publication Date: 2009-06-10
INSPUR LG DIGITAL MOBILE COMMUNICATIONS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In the process of detecting the above-mentioned transmission signal, a resistor is used to couple the main transmission path of the amplifier unit 1 and the antenna unit 2 and the inspection path of the transmission signal detector 3, because the above-mentioned resistance will be affected by the above-mentioned transmission signal. The influence of the reflected wave of the signal detector interferes with the main sending channel, which will lead to the problem of degrading the quality of the sending signal.

Method used

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Examples

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Embodiment Construction

[0017] The accompanying drawings describe in detail the practical embodiments of the present invention.

[0018] figure 2 It is a structural diagram of an embodiment of a mobile communication terminal applicable to the present invention.

[0019] refer to figure 2 , the mobile communication terminal applicable to the present invention includes an amplifying unit 100 for amplifying the signal; in the process of receiving and transmitting the amplified signal, the phase of the reflected signal is used to remove the reflected signal and output the reflected signal of the two signals Removal unit 200; Receive the first output signal output by the second 90-degree hybrid coupler from the above-mentioned reflection signal removal unit 200 and send it to the external antenna unit 300; receive the first output signal of the second 90-degree hybrid coupler from the above-mentioned reflection signal removal unit The second output signal output by the second 90-degree hybrid coupler ...

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Abstract

The present invention relates to a mobile communication terminal characterized by comprising an amplifying part amplifying signal; a reflection signal eliminating part using phase of reflection signal to eliminate reflection and output two signal in process of receiving said amplified signal and sending the same; an antenna part receiving said first output signal from said reflection signal and outputting the same outside; a sending signal wave detecting part receiving said second output signal from said reflection signal and converting AC voltage value of said second output signal into DC voltage value; a control part receiving DC voltage value from said sending signal wave detecting part and controlling said amplifying part. The invention eliminates reflection by using 90 degrees mix coupling device, which can send sending signal with high quality.

Description

technical field [0001] The invention relates to a mobile communication terminal, in particular to a mobile communication terminal which uses a 90° Hybrid Coupler (90° Hybrid Coupler) to remove reflected signals. Background technique [0002] figure 1 It is a structural diagram of an existing mobile communication terminal. [0003] refer to figure 1 , the amplification unit (Power Amp) 1 amplifies the signal to be sent and outputs it to the antenna (Antenna) unit 2 . [0004] The antenna (Antenna) unit 2 receives the transmission signal from the amplifier unit 1 and transmits it to the outside. [0005] The sending signal detector (RF Tx Signal Detector) 3 receives the above-mentioned sending signal from the above-mentioned amplification unit 1, converts the AC voltage of the above-mentioned sending signal into a DC voltage, and finally sends the DC voltage value of the above-mentioned sending signal to the mobile communication terminal modem 4 . [0006] The sending sig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/40
CPCH03F3/24H03F2200/411H03G3/3042H04B1/04H04B2001/0416
Inventor 郑泰槿
Owner INSPUR LG DIGITAL MOBILE COMMUNICATIONS CO LTD
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