Ku-band satellite uplink tester and working method thereof

Abstract

The invention discloses a Ku-band satellite uplink tester and a working method thereof. The Ku-band satellite uplink tester comprises an oscillator, an amplifier, an adjustor, a frequency mixer, a low-noise amplifier, an adjustable attenuator, a filter and a direct-current blocker; the adjustor is separately connected with the oscillator, the amplifier, the frequency mixer and the low-noise amplifier; the output end of the oscillator is connected with the input end of the amplifier; both the output end of the amplifier and the output end of the low-noise amplifier are connected with the input end of the frequency mixer; the output end of the frequency mixer is connected with the input end of the filter; the output end of the filter is connected with the input end of the direct-current blocker; the direct-current blocker is connected with an output interface; an input interface is connected to the adjustable attenuator; and the output end of the adjustable attenuator is connected to the input end of the low-noise amplifier. The action of a satellite repeater is realized through combined connection of the existing components; and thus, a satellite uplink testing program can be very simple.

Description

technical field [0001] The invention relates to a link tester, in particular to a Ku frequency band satellite uplink tester and its working method. Background technique [0002] In the current domestic satellite transmission and launch industry, especially during the link test of the satellite earth station uplink system, it is necessary to check whether the indicators of the uplink system are in compliance with the "Specifications for Acceptance of Satellite Radio and Television Earth Stations" by the State Administration of Press, Publication, Radio, Film and Television before it is officially put into use. Or after system adjustment, it is necessary to test whether various indicators meet the requirements, and an uplink system link test is required. According to the general process, after the high-power amplifier transmits the carrier wave, it is sent to the satellite uplink antenna through the waveguide, and reaches the satellite transponder through a free space of 35,78...

AI Technical Summary

Problems solved by technology

[0003] Traditional methods require renting satellite transponders for testing, such as figure 1 As shown, this requires all parties to coordinate transponder resources with the satellite company. Even if a suitable transponder can be leased, certain security risks will be borne. For example, the maximum power copying test is generally not allowed by the satellite company, and the rental fee is high.

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