KU wave band tuner

Abstract

The invention discloses a KU wave band tuner. The tuner comprises a circuit board protection shell, an aluminum limiting plate, fixing screw holes, output heads, a connecting pipe, an isolation protection shell and a sliding connection buckle. The circuit board protection shell is of a rectangular structure. The aluminum limiting plate is fixedly connected to the left side of the circuit protection shell; the multiple fixing screw holes are fixed to the surface of the aluminum limiting plate at equal angle. The four output heads are connected to the surface of the aluminum limiting plate through bolts at equal angles. According to the invention, the advanced ultra-low noise technology at the present stage is adopted; dual local oscillators are used to balance frequency mixing, the intermediate frequency is amplified to optimize an integrated circuit, so that the tuner is obvious in power gain, low in noise, excellent in phase noise index and high in reliability, meanwhile, the tuner isof a split structure, the sliding connection buckle over the connecting pipe can be disassembled and assembled in a sliding mode, internal elements are convenient to check and replace when being damaged, and the service life of the tuner is prolonged.

Description

technical field [0001] The patent of the present invention relates to a KU band tuner. Background technique [0002] my country's existing satellite broadcast TV frequency band is still dominated by C-band, which is the frequency band shared by official TV and communication, so the two often interact with each other, resulting in unsatisfactory reception quality. At present, satellite TV broadcasting in the world The KU frequency band is used, which has high frequency and short wavelength, and reduces the volume of the antenna, which is conducive to reducing production costs and is more worthy of promotion. It can be seen that the use of the KU frequency band is an inevitable trend in the development of satellite TV broadcasting. . [0003] At present, most of the tuners in the C-band are used in China, and many of them use discrete devices with complex structures. However, the phase noise of a few tuners in the KU-band is not ideal, which affects the reception of TV signals ...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the tuners in the C-band are used in China, and many of them use discrete devices with complex structures. However, the phase noise of a few tuners in the KU-band is not ideal, which affects the reception of TV signals to a large extent. Since the tuner often uses an integrated structure, it is not easy to replace some parts after damage, which reduces the sustainable practicability of the tuner

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