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Method, decomposing and synthesizing router and terminal for decomposing and synthesizing three-frequency range code division multiple access signal

A technology for synthesizing signals and splitters, which is used in code division multiplexing systems, multiplexing communications, circuits, etc. question

Inactive Publication Date: 2010-08-04
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structure of band-pass filter and band-stop filter is more complex, and the insertion loss is relatively large

Method used

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  • Method, decomposing and synthesizing router and terminal for decomposing and synthesizing three-frequency range code division multiple access signal
  • Method, decomposing and synthesizing router and terminal for decomposing and synthesizing three-frequency range code division multiple access signal
  • Method, decomposing and synthesizing router and terminal for decomposing and synthesizing three-frequency range code division multiple access signal

Examples

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Embodiment Construction

[0065] A combination of high-pass filter and low-pass filter is used on the terminal PCB to form the decomposition and synthesis of two-way signals with a T-shaped structure. For the decomposition and synthesis of three-band CDMA signals, three frequency bands need to be formed through two T-shaped structures. Signal decomposition and synthesis.

[0066] The basic idea of ​​the present invention is: when decomposing the three-band CDMA signal, the common end of the first T-shaped joint receives the three-band CDMA signal, and one end of the T-shaped joint separates the high-frequency band signal through a high-pass filter; The composite signal of the remaining two frequency band signals is separated by the pass filter, and connected to the common end of the second T-shaped connector, and one end of the T-shaped connector of the second T-shaped connector is separated by a high-pass filter to separate the The intermediate frequency band signal, and the low-frequency band signal ...

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Abstract

The invention discloses a method for decomposing and synthesizing a three-frequency range CDMA (Code Division Multiple Access) signal. When the three-frequency range CDMA signal is decomposed, the common port of a first T-shaped joint receives the three-frequency range CDMA signal, a high-band filter and a low-band filter at both ends of the T-shaped joint separate a high-frequency range signal and a synthesis signal of two remained frequency range signals, the synthesis signal is accessed into the common port of a second T-shaped joint, and a high-band filter and a low-band filter at both ends of the second T-shaped joint separate a medium-frequency range signal and a low-frequency range signal in the synthesis signal. When the three-frequency range CDMA is synthesized, the three frequency range signals are transmitted on the two T-shaped joints in the reverse direction, thereby obtaining the three-frequency range CDMA signal. The invention also discloses a decomposing and synthesizing router and a terminal for decomposing and synthesizing the three-frequency range CDMA signal, thereby decomposing and synthesizing the three-frequency range CDMA signal through the simple structure.

Description

technical field [0001] The invention relates to decomposing and synthesizing signal technology, in particular to a method for decomposing and synthesizing three-band code division multiple access signals, a splitter-combiner and a terminal. Background technique [0002] The splitter is to decompose one signal into multiple signals, which have the same frequency split and different frequency split; the combiner is to combine several radio frequency signals from different transmitters into one and send it to the antenna. [0003] At present, there is a platform that supports three frequency bands of Code Division Multiple Access (CDMA) at the same time: 1.9GHz, 800MHz, and 450MHz; a CDMA terminal will be able to roam in networks using different frequency bands; at present, the antennas for 1.9GHz and 800MHz signals are shared The transmitter makes the two frequency bands share one antenna, and the 450MH frequency band uses a separate antenna. With the advancement of antenna t...

Claims

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Application Information

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IPC IPC(8): H01P1/213H04B1/00
CPCH04J13/00H04L5/0016
Inventor 丁国林
Owner ZTE CORP