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S-band autonomous switching bidirectional power amplifier

A power amplifier and autonomous switching technology, applied in the circuit field, can solve problems such as reducing communication quality, increasing communication link costs, increasing equipment complexity, etc., achieving the effects of increasing transmission distance, simple structure, and shortening switching time

Inactive Publication Date: 2015-04-01
NO 8357 RES INST OF THE THIRD ACADEMY OF CHINA AEROSPACE SCI & IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, it increases the complexity of the equipment and reduces the communication quality, and on the other hand, it increases the cost of the communication link

Method used

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  • S-band autonomous switching bidirectional power amplifier
  • S-band autonomous switching bidirectional power amplifier
  • S-band autonomous switching bidirectional power amplifier

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Embodiment Construction

[0023] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] The present invention provides an S-band self-switching bidirectional power amplifier, which is mainly used to expand the communication coverage of a single node, and simultaneously realizes bidirectional transmission and reception together with a transceiver, and is directly applied to a wireless communication system compatible with a special network (its application scene such as figure 1 shown). Such as figure 1 , figure 2 As shown, when the power amplifier of the present invention is working, the power amplifier 1 is cross-linked with the transceiver, and the corresponding system antenna is installed at the antenna port, and when the transceiver is in the transmitting state, power amplification is realize...

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Abstract

The invention relates to an S-band autonomous switching bidirectional power amplifier and belongs to the technical field of circuits. A specific amplifier chip is adopted to realize S-band amplification, a special control method is adopted and an automatic monitoring circuit is adopted to perform real-time control on receiving and transmission, and therefore, the S-band bidirectional power amplifier which is simple in structure and capable of realizing autonomous switching can be realized. According to the S-band autonomous switching bidirectional power amplifier, for a transmission path, two power amplification chips are adopted to realize two-path combination, and consequently, the transmission power is increased and the transmission distance of signals is greatly increased; a low noise amplifier chip in which a amplitude limiter is arranged is adopted for a receiving path, and due to the characteristics of low noise, high gain and high destroy resistance of the low noise amplifier chip, the receiving sensitivity is remarkably improved and the receiving and transmission properties are balanced; complying with the design principles of balance and symmetry, consistent biasing circuit and filter circuit are adopted for the two-path power amplifier, the switching time is shortened and the receiving noise coefficient is reduced.

Description

technical field [0001] The invention relates to the field of circuit technology, in particular to an S-band autonomous switching bidirectional power amplifier. Background technique [0002] At present, the RF front-end used in the time division duplex transceiver system is equipped with an external control circuit, which is generally switched by manually adding different levels, although this solution has great advantages in terms of equipment reliability and long-distance communication. Great advantages, but it also brings a series of problems. On the one hand, it increases the complexity of the equipment and reduces the communication quality, and on the other hand, it increases the cost of the communication link. [0003] How to design a bidirectional power amplifier with a simple structure, which can complete autonomous switching, improve receiving sensitivity, reduce cost, and realize long-distance wireless transmission in half-duplex mode, in consideration of the actua...

Claims

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Application Information

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IPC IPC(8): H03F3/20
CPCH03F3/24
Inventor 刘天保
Owner NO 8357 RES INST OF THE THIRD ACADEMY OF CHINA AEROSPACE SCI & IND
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