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FDD (Frequency Division Duplex) high-temperature superconducting RF (Radio Frequency) front end subsystem

A high-temperature superconducting, radio frequency front-end technology, applied in transmission systems, electrical components, etc., can solve problems such as unfavorable system sensitivity, improvement, and large loss of duplexers, achieving compact structure, excellent technical indicators, and convenient grid connection.

Inactive Publication Date: 2011-06-22
天津海泰超导电子有限公司
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AI Technical Summary

Problems solved by technology

The current basic access method is to directly connect superconducting filters in series between the duplexer and the low-noise amplifier in the existing RF front-end subsystem. The access method is simple, but the disadvantage is that the conventional duplexer has a large loss , which introduces additional loss, which is not conducive to the improvement of system sensitivity

Method used

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  • FDD (Frequency Division Duplex) high-temperature superconducting RF (Radio Frequency) front end subsystem
  • FDD (Frequency Division Duplex) high-temperature superconducting RF (Radio Frequency) front end subsystem
  • FDD (Frequency Division Duplex) high-temperature superconducting RF (Radio Frequency) front end subsystem

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Embodiment 1

[0020] Embodiment 1: A frequency-division duplex high-temperature superconducting radio frequency front-end subsystem 300, including three parts: a duplexer 301, a high-temperature superconducting filter 201 and a low-temperature low-noise amplifier 302, characterized in that the duplexer 301 is asymmetric Diplexer.

[0021] The above-mentioned asymmetric duplexer 301 in the frequency division duplex high temperature superconducting RF front-end subsystem 300 includes a transmitting channel and a receiving channel in its structure, and the order of the transmitting channel filter is 8, which is higher than that of the receiving channel. The order of the channel filter is 4th order.

[0022] The above-mentioned asymmetric duplexer 301 in the frequency division duplex high temperature superconducting RF front-end subsystem 300 has a receiving channel filter bandwidth of 810MHz to 840MHz, which is not narrower than and covers a receiving frequency bandwidth of 825MHz to 835MHz, a...

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Abstract

The invention relates to a FDD (Frequency Division Duplex) high-temperature superconducting RF (Radio Frequency) front end subsystem, which comprises a duplexer, a high-temperature superconducting filter and a low-temperature low-noise amplifier and is characterized in that the duplexer is an unsymmetrical duplexer. The invention has the advantages that the original emitting channel filter characteristics of a conventional RF front end are kept, a receiving channel integrates the advantages of high frequency selectivity of the superconducting filter and low noise of the low-temperature low-noise amplifier, and the FDD high-temperature superconducting RF front end subsystem has the advantages of compact structure, excellent technological indexes, rapidness in parallel networking, and the like.

Description

(1) Technical field: [0001] The invention relates to a frequency division duplex radio frequency front end subsystem, in particular to a frequency division duplex high temperature superconducting radio frequency front end subsystem. (two) background technology: [0002] In various civil communication and military communication systems, the RF front-end subsystem is an important part, and its technical indicators play a key role in the performance of the entire system. In frequency-division duplex communication systems, the RF front-end subsystem generally includes a duplexer and a low-noise amplifier, and the duplexer has a symmetrical structure and has the same filter order in the transmit and receive channels. The function of the subsystem is to filter the high-power signal to be transmitted through the transmission channel of the duplexer, and then transmit it from the antenna through the common port of the duplexer. The low-power signal received by the antenna is first ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/56
Inventor 孙钧王朗李演奇季来运李晨晨刘彬
Owner 天津海泰超导电子有限公司
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