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A radio frequency topology system for LTE-FDD carrier aggregation

A technology of LTE-FDD and carrier aggregation, applied in transmission systems, electrical components, etc., can solve problems such as interference

Active Publication Date: 2021-09-10
宁波麦度智联科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the fact that the uplink and downlink channels of the current duplexer are likely to cause interference, the present invention provides a radio frequency topology system for LTE-FDD carrier aggregation

Method used

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  • A radio frequency topology system for LTE-FDD carrier aggregation
  • A radio frequency topology system for LTE-FDD carrier aggregation
  • A radio frequency topology system for LTE-FDD carrier aggregation

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0031] figure 1 The duplexer in is the bottleneck device of LTE-FDD. For carrier aggregation, a quadruplexer needs to contain four filters, that is, four passbands. Therefore, integrating multiple bandpass filters in a limited space can easily cause uplink and downlink data interference, and it is not easy to reduce this interference. The core of carrier aggregation is to combine multiple radio channels within a frequency band and across frequency bands, and use it as a wider frequency band. Through unified baseband processing, high-speed transmission on a wide frequency band can be achieved, and delays can be reduced.

[0032] Therefore, the present invention aims at the problem existing in the prior art, provides such as image 3 A radio frequency topology system for LTE-FDD carrier aggrega...

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Abstract

The invention relates to a communication data transmission, in particular to a radio frequency topology system. It includes a radio frequency antenna receiving circuit and a radio frequency antenna transmitting circuit. The radio frequency antenna receiving circuit receives downlink channel data, including: receiving antenna, receiving signals within the preset frequency range; receiving antenna switch, controlling the working state of the radio frequency antenna receiving circuit; the first band The pass filter filters and outputs the signal sent by the receiving antenna switch; the frequency divider divides the signal sent by the receiving antenna switch into signals of different frequencies and outputs it; the RF antenna transmitting circuit sends uplink channel data, including: The frequency converter combines multiple signals that need to be transmitted; the second band-pass filter filters the uplink pass-band data; the transmitting antenna switch controls the working state of the RF antenna transmitting circuit; the filter with relatively simple technology, Frequency dividers and frequency combiners are used to replace technically complex multiplexers, making the realization of multi-carrier technology easier.

Description

technical field [0001] The present invention relates to a radio frequency topology system, in particular to a radio frequency topology system for LTE-FDD carrier aggregation. Background technique [0002] In the communication field, in order to meet the requirements of single-user peak rate and system capacity improvement, one of the most direct solutions is to increase the system transmission bandwidth. However, under the existing frequency band distribution, it is difficult to find a continuous spectrum resource for use, so the LTE-Advanced (Long Term Evolution-Advanced, long-term evolution technology upgrade version) system introduces a technology to increase the transmission bandwidth, that is, CA (Carrier Aggregation, carrier aggregation). [0003] The current topology of carrier aggregation is as follows: figure 1 As shown, ANT1 is an antenna, IC1 is an antenna switch, IC2 is a duplexer, and IC3 is a quadruplexer. This topology shares an antenna ANT1 for receiving a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/00H04B1/40
CPCH04B1/005H04B1/0067H04B1/40
Inventor 常爱民刘军生周陈力杨东杨永刚
Owner 宁波麦度智联科技股份有限公司
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