A ku-band tuner

Abstract

The invention discloses a KU-band high-frequency head, which comprises a circuit board protection case, an aluminum limiting plate, a fixing screw hole, an output head, a connecting pipe, an isolation protection case, and a sliding buckle. The circuit board protection case is rectangular structure, the aluminum limiting plate is fixedly connected to the left side of the circuit protection case, multiple fixed screw holes are fixed on the surface of the aluminum limiting plate at equal angles, and the four output heads are connected to the surface of the aluminum limiting plate with equiangular bolts, The present invention adopts the advanced ultra-low noise technology at the present stage, uses dual local oscillators, balances the frequency mixing, amplifies the intermediate frequency, and optimizes the integrated circuit. Therefore, this kind of tuner has obvious power gain and low noise , The phase noise index is excellent and the reliability is high. At the same time, the invention adopts a split structure, and the sliding buckle above the connecting pipe can be slid, disassembled and installed. When the internal components are damaged, it is convenient to check and replace, and the service life of the tuner is increased.

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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