Patent ID: 9577766
Date: 2017-02-21
CPC Classifications: H01J,H04B

Claim:
1. A space X-ray communication system, comprising a transmitting apparatus and a receiving apparatus, wherein the transmitting apparatus comprises a digital signal transmitting source, a communication interface of a transmitting end, a carrier signal generator of the transmitting end, a modulator, a signal shaping circuit, a grid-controlled X-ray source and an X-ray collimator, wherein the digital signal transmitting source inputs a digital signal to be transmitted into the modulator through the communication interface of the transmitting end, the carrier signal generator of the transmitting end inputs a generated carrier signal of the transmitting end into the modulator, the modulator modulates the digital signal with the carrier signal of the transmitting end to generate a digital modulated signal and then inputs the digital modulated signal into the signal shaping circuit, the signal shaping circuit amplifies the digital modulated signal and performs a level conversion and then inputs the shaped signal into the input end of the grid-controlled X-ray source, the grid-controlled X-ray source outputs an X-ray pulse signal and the X-ray pulse signal is collimated by the X-ray collimator and then transmitted to the receiving apparatus; the grid-controlled X-ray source comprises an X-ray tube package, components located orderly in the X-ray tube package and an output window located on the X-ray tube package, wherein the components comprises a filament, a thermionic cathode, a modulation grid, an electronic beam focusing electrode and a metallic target anode; wherein one end of the filament is grounded and the other end is connected with the anode of a power supply, the thermionic cathode is located at the side of the filament and the emergence hole thereof faces the filament, the modulation grid is an electrode plate with a small hole which faces the emergence hole of the thermionic cathode, the electronic beam focusing electrode is located on the two sides of the small hole of the modulation grid to form a focusing channel facing the small hole, an electronic beam is focused by the electronic beam focusing electrode and then transmitted to the metallic target anode, wherein the transmitting surface of the metallic target anode faces the outlet of the focusing channel and the other surface is connected with the anode of the power supply, and the output window is located on an reflection path of the electronic beam which is from the metallic target anode.