TD-SCDMA amplifier adopting radio-frequency switch array
A TD-SCDMA, radio frequency switch technology, applied in the field of TD-SCDMA amplifiers, can solve problems such as waste of radio frequency hardware resources, and achieve the effect of low investment cost and reliable operation
Active Publication Date: 2009-12-23
CHINA YOUKE COMM TECH
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Problems solved by technology
However, at present, for repeaters in the ordinary sense, uplink signals and downlink signals are amplified by different radio frequency links, which is obviously a waste of radio frequency hardware resources
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[0019] The specific embodiment of TD-SCDMA amplifier of the present invention is as figure 2 As shown: the uplink and downlink signals use a common amplifier through the cooperation of the RF switch and the duplexer. The solid line arrow in the figure is the downlink reverse, and the dotted line arrow is the uplink reverse. The link includes an input stage filter and an output stage filter, an input stage circulator and an output stage circulator, a radio frequency switch array, and a radio frequency amplification module; it is characterized in that: the uplink signal link is connected to the output stage filter, connected to the output stage The circulator is connected to a group of electronic switches in the radio frequency switch array; the downlink signal link is connected to the input stage filter, connected to the input stage circulator, and then connected to another group of electronic switches in the radio frequency switch array; the radio frequency amplification modul...
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The invention relates to a TD-SCDMA amplifier using a radio frequency switch array, which is characterized in that it includes an input stage filter and an output stage filter, an input stage circulator and an output stage circulator, a radio frequency switch array, and a radio frequency amplification module; That is: the uplink signal link is connected to the output stage filter, connected to the output stage circulator, and then connected to a group of electronic switches in the radio frequency switch array; the downlink signal link is connected to the input stage filter, connected to the input stage circulator, and then Connect to another group of electronic switches in the radio frequency switch array; the input end of the radio frequency amplification module is connected to an electronic selection switch in the radio frequency switch array, and the other end of the electronic selection switch is connected to an electronic switch in the uplink signal link and a downlink signal link respectively. An electronic switch in the signal chain is connected; the output end of the radio frequency amplification module is connected to another electronic selection switch in the radio frequency switch array, and the other end of the electronic selection switch is respectively connected to another electronic switch in the uplink signal chain and the downlink Another electronic switch in the signal chain is connected. The device is reliable in operation and low in investment cost. It can not only easily realize the synchronization of the uplink and downlink switching systems of the repeater, but also realize the sharing of the same set of radio frequency amplification links for the uplink and downlink signals.
Description
Technical field: [0001] The invention relates to a TD-SCDMA amplifier using a radio frequency switch array. Background technique: [0002] TD-SCDMA is one of the third-generation mobile communication space interface technical specifications officially released by ITU. It has been fully supported by CWTS and 3GPP. It is the first complete communication technology standard of China Telecom in the past century. The solution is a mobile communication technology that integrates the technical advantages of CDMA and TDMA, has large system capacity, high spectrum utilization rate, and strong anti-interference ability. It adopts smart antenna, joint detection, synchronous CDMA, multi-slot, variable spread Frequency system, adaptive power adjustment and other technologies. [0003] The chip rate of TD-SCDMA is 1.2Mc / s, and the carrier frequency bandwidth is 1.6MHz. Its downlink and uplink information are transmitted on different time slots of the same frequency. figure 1 It is the f...
Claims
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IPC IPC(8): H04B7/005H04B7/04
Inventor 赖克中陈志阳张健荣吴亮陈群峰
Owner CHINA YOUKE COMM TECH