Worldwide interoperability for microwave access (WiMAX) radio frequency front end two-way amplifier

Abstract

The invention discloses a worldwide interoperability for microwave access (WiMAX) radio frequency front end two-way amplifier. The WiMAX radio frequency front end two-way amplifier comprises a downlink power amplifier circuit, an uplink low noise amplifier circuit, a high speed radio frequency switch and a synchronous control circuit, wherein the high speed radio frequency switch is composed of two groups of single-pole double-throw switch circuits, one group of single-pole double-throw switch circuits is connected with a base station, the output end of the one group is connected with the input end of the downlink power amplifier circuit, and the input end of the one group is connected with the output end of the uplink low noise amplifier circuit; the other group of single-pole double-throw switch circuits is connected with a receiving antenna, the input end of the other group is connected with the output end of the downlink power amplifier circuit, and the output end of the other group is connected with the input end of the uplink low noise amplifier circuit; and the signal output end of the synchronous control circuit is respectively connected with each group of single-pole double-throw switch circuits. The WiMAX radio frequency front end two-way amplifier is small in size, low in cost, small in occupied bandwidth, low in power consumption, high in switching speed between the power amplifying and the low noise amplifying, and large in isolation of output / input of the power amplifier circuit and the low noise amplifier circuit.

Description

Technical field [0001] The invention relates to a WiMAX radio frequency front-end bidirectional amplifier. Background technique [0002] WiMAX is an emerging wireless communication technology that can provide high-speed Internet-facing connections. WiMAX's wireless signal transmission distance can reach up to 50 kilometers, and its network coverage area is 10 times that of 3G base stations. According to data, "WiMAX" has become the most searched communication keyword on the Internet recently. This technology has become the new favorite of the wireless industry with its long-range coverage and high-bandwidth characteristics. [0003] The full name of WiMAX is World Interoperability for Microwave Access, that is, the global microwave access interoperability system. It is a broadband wireless access metropolitan area network (BWAMAN) technology based on the IEEE802.16 standard. WiMAX is also often referred to as IEEE Wireless MAN (Metropolitan Area Network), and its basic goal is to...

AI Technical Summary

Problems solved by technology

[0004] FDD communication systems usually use a duplexer to isolate and combine the uplink and downlink amplification links. However, in the existing WiMAX radio frequency communication system, both the downlink power amplifier circuit and the uplink low-noise amplifier circuit use unidirectional amplifiers, and the radio frequency signal can only Input from one end, amplified signal output from the other end

The use of this traditional unidirectional amplifier in the WiMAX RF front-end will result in a large volume and high cost of the RF front-end, which cannot meet the design requirements of the WiMAX RF front-end.

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