Development of a High Power Ultra High Frequency Multifunctional Ferrite Coaxial Device with a Telemetry Sensor for Onboard Repeaters

Introduction. Ferrite non-reciprocal devices are widely used in various space qualified transmit/receive modules. The layout of modern satellite communication systems is becoming more compact, which requires multifunctional devices capable of replacing several different components. Thus, the creation of hybrid ferrite devices capable of performing additional functions along with microwave signal isolation represents a relevant research task.
Aim. Creation of a multifunctional hybrid device for high RF power. Development of a telemetry sensor capable of providing a DC voltage value proportional to the level of reflected power.
Materials and methods. Calculations were performed in specialized CAD systems for electrodynamic and thermal analysis. Measurements and tests on high RF power were performed using the facilities of the Ferrite-Domen Scientific Research Institute.
Results. A multifunctional ferrite device with a built-in reflected power telemetry sensor is developed. The sensor is implemented exclusively on passive components; the hybrid device does not require an external power source. The DC voltage value at the sensor output does not exceed 4.5 V. The required dependence of the output voltage on the reflected power value is obtained. The device exhibits increased reliability, meeting the requirements of modern space application systems. Its input/output VSWR does not exceed 1.25, with the insertion and isolation losses being no more than 0.35 dB and no less than 20 dB, respectively.
Conclusion. The developed multifunctional device meets modern requirements for space electronic components. The implemented reflected power sensor has no analogues in the world. The obtained results can serve as a basis for the creation of similar devices for different frequencies and power levels

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