Ka/Ku dual-frequency BUC of integrated design

Abstract

The invention discloses a Ka / Ku dual-frequency BUC of an integrated design. The BUC includes an intermediate-frequency signal and reference signal shared input port, two radio frequency output ports,a power input port and a low-frequency control signal input port. The Ka / Ku dual-frequency BUC is integrated with frequency up-conversion units and power amplification units on two frequency bands ofKa and Ku. The frequency up-conversion units and the power amplification units realize switching through a control terminal, and have a shared heat dissipation unit, power supply unit and monitoring unit at the same time. The intermediate-frequency input end of the dual-frequency BUC receives a signal, the Ka frequency band or the Ku frequency band is selected through the control terminal, power amplification is carried out on the selected frequency band, and the same is sent to an antenna. According to the small-volume Ka / Ku dual-frequency BUC of the invention, dual-frequency integrated alternate working can be carried out to ensure that a commercial aircraft flies in global airspace across different regions and different satellite communication frequency bands, and arbitrary switching and real-time communication can be realized.

Description

technical field [0001] The invention relates to the communication field, in particular to a Ka / Ku dual-frequency BUC. Background technique [0002] With the development of science and technology and the advent of the Internet era, the wifi service in civil aviation is rapidly becoming popular all over the world and gradually matures. The wifi service in domestic civil aviation is still in its infancy, and is being explored and caught up. [0003] The satellite communication system is the key equipment to realize the wifi service in civil aviation, and it mainly works in the range of microwave and millimeter waves (ie, Ku and Ka frequency bands) to avoid interference. As the most important part of the satellite communication system, the BUC that can work in the Ka and Ku frequency bands is suitable for civil aviation communications and is a necessary device to ensure the interconnection of air-ground information for passengers in civil aviation cabins. [0004] At present, ...

AI Technical Summary

Problems solved by technology

[0010] In view of the actual situation that the satellite communication system installed on commercial aircraft needs to use the channels of Ka and Ku frequency bands and realize real-time switching, the traditional independent frequency band transmitter will increase the occupied space of the overall system and the unfavorable conditions such as complex control interface , a kind of dual-frequency BUC (up-conversion power amplifier) ​​of the present invention intends to design the power supply, heat dissipation, control, and structural units to share one by designing the circuit; Technology), space synthesis technology, and by greatly merging similar circuit units such as frequency doubling units, RF channels to minimize volume

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