2019 International Seminar on Electron Devices Design and Production (SED) | 2019
To the Problem of Vibration Resistance Ensuring of Microwave Radio Receivers
Abstract
The way to increase the vibration resistance of the aircraft on-board systems is considered. It is proposed to use circuit design methods slightly covered in the literature known to the authors, in relation to vibration effects for solving the problem of conservation of their functional reliability. On the basis of the radar receiver chosen as the object of the analysis, its cascades, making the greatest contribution to reducing the vibration resistance, namely, the antenna assembly, and to a lesser extent, the mixer and the heterodyne, are determined. The fluctuation parameters of antennas, mixers, and heterodynes are defined. It is proposed to consider for the analysis the parts of a receiver in the form of linear parametric two-port networks. The method for using the effects of modulated interference in dealing with fluctuation noise is determined. The schematic method to improve the vibration resistance by changing the transfer function of the optimum filter and the threshold value is considered. The described results allow drawing the attention to such an important component of protection methods against mechanical impacts, as the vibration response of the instrument in the schematic and system design.