Ka frequency-band solid-state power amplifier

Abstract

The invention discloses a Ka frequency-band solid-state power amplifier, which relates to an uplink channel transmission device in the field of satellite communication. The solid-state power amplifier comprises a level control unit, a driving amplifier, a solid-state power amplification module, an output coupler, a wave detector, a monitoring unit, a temperature sensor, a module power supply, and the like. The invention relates to an intra-waveguide space 12-route power combining technique, and a three-route waveguide power splitter and a three-route power combiner for waveguide branch lines are designed; four power single-chips are assembled on a four-route power combiner consisting of the waveguide branch lines, waveguide T-shaped nodes, and waveguide-microstrip probes in a transitional manner; and three four-route power combining modules subjected to special testing, together with a three-route power splitter and a four-route power combiner, from a 12-route power combining module. The power amplifier disclosed by the invention has the characteristics of compact structure, high integration degree, stable and reliable performance, light weight, low power consumption, and wide operating temperature range; and the power amplifier is especially applicable to the power amplification services of satellite communication microwave channels.

Description

technical field [0001] The invention relates to a Ka-band solid-state power amplifier in the field of satellite communication, and is especially suitable for power amplification of satellite communication microwave channels. Background technique [0002] With the increase of satellite communication business volume, the original C and Ku frequency band frequency resources are close to saturation, unable to meet the growing communication requirements. Ka frequency satellite communication has the characteristics of large communication capacity, good security and confidentiality, and high transmission quality, which is convenient To realize the miniaturization of the satellite ground station, the power amplifier is one of the components of the satellite uplink, and its function is to amplify the power of the uplink modulated signal to meet the channel transmission requirements. [0003] C. Solid-state power amplifiers in the Ku frequency band are mostly implemented by circuit sy...

AI Technical Summary

Problems solved by technology

[0003] C, Ku-band solid-state power amplifiers are mostly implemented by circuit synthesis. However, due to the increase in operating frequency in the Ka-band, the loss caused by the original synthesis method has reached an unbearable level, which reduces the synthesis efficiency and reduces the The output power increases the power consumption of the device itself, which is not conducive to the actual use of this frequency band

Images