3results about How to "Improve electromagnetic compatibility characteristics" patented technology

The invention belongs to the technical field of radar and electronic equipment, and discloses a universal miniaturized filter bank. The miniaturized filter bank comprises a multilayer ceramic substrate, a filter, a switch, a capacitor and a circuit interconnection wire. According to the invention, not only are the types and the number of component-level components greatly reduced, but also the problems of electromagnetic noise and signal interference caused by nonlinearity of the components are reduced through airtight packaging, and the electromagnetic compatibility characteristic of the system is improved.

A comprehensive task system compatible with multiple aerial carrier platforms mainly comprises a distribution board, a main control board, an external interface, a power supply module, a power supply switch and the like, integrates fire control and launch control, is designed in a highly integrated mode, is small in size, light in weight, good in electromagnetic compatibility, high in system matching performance and capable of being compatible with the multiple aerial carrier platforms for use. And a large amount of software and hardware research and development expenditure and personnel cost are reduced.

This invention discloses a space phased array based on metasurfaces and its control method. The space phased array includes a time-domain reflectometric metasurface array and an optical fiber control unit. The time-domain reflectometric metasurface array is composed of metasurface elements arranged continuously in an array configuration. The optical fiber control unit contains optical paths with the same number of metasurface elements as the time-domain reflectometric metasurface array. All optical paths are connected one-to-one to the photodiode input terminals on the back of different metasurface elements. Each optical path can independently control the light intensity of the input photodiode. By controlling the light intensity of each optical path, the output voltage of the photodiodes on different metasurface elements in the time-domain reflectometric metasurface array and the bias voltage across the varactor diodes are changed, causing different metasurface elements to generate corresponding microwave reflection harmonic distributions, thereby directly mapping the optical signal onto the microwave signal. This invention can achieve control over the reflection of spatial electromagnetic waves in any direction.