V.S. Berdyev - Ph. D. (Eng.), Head of Department, PJSC «Radiofizika» (Moscow); Lecturer, Department of Radiophysics and Engineering Cybernetics, Moscow Institute of Physics and Technology (State University) B.A. Levitan - Ph. D. (Eng.), General Director, PJSC «Radiofizika» (Moscow); Head of Department of Radiophysics and Engineering Cybernetics, Moscow Institute of Physics and Technology (State University) P.A. Tushnov - Main Technologist, PJSC «Radiofizika» (Moscow); Lecturer, Moscow Aviation Institute (National Research University) A.V. Shishlov - Ph. D. (Eng.), Head of Department, PJSC «Radiofizika» (Moscow); Deputy Head of Department of Radiophysics and Engineering Cybernetics, Moscow Institute of Physics and Technology (State University)

Development of advanced transmit-receive modules (TRM) with not only phase control but also output power control is a valuable step in perfection of active electronically scanning antennas (AESA). This control makes it possible to increase capabilities and efficiency of radioelectronic systems with AESA [1−2]. JSC «Radiofizika» intensively develops TRMs using innovative technologies [3−15]. The factory for mass production, tuning and test of TRMs is created [30]. The TRMs with amplitude and output power control are required for both directly radiated AESAs and array-fed reflector antennas. Power control in array channels is key property of TRMs providing high performances of the latter antennas [16−20]. There are many approaches to output power control and improvement of power efficiency of amplifiers [21−26]. Recently, TRMs with output power control were designed in JSC «Radiofizika» [27−29]. The power control is implemented with help of controllable power supply chips. In saturation mode the GaN power amplifiers have high efficiency of about 70%. Total power efficiency of the whole TRM is about 40% with power variation in the range over 10 dB. The proposed technology of TRM with output power control has the following advantages: forming of amplitude and phase distributions over channels of AESA with high power efficiency of amplifiers; decreasing of output power tolerances in array channels due to power calibration. Several options of power calibration for basic TRMs and appropriate positive results for AESAs are considered in the paper. Using ap-proaches [31, 32] it is shown that selecting a level of power calibration it is possible to simplify cooling and power supply systems or increase reliability of AESA or increase its radiated power. Estimations made with help of [33−37] show achievable improvement of AESA-s radiation performances due to power control in array channels. Simulation of array-fed reflector antenna [16−20, 39, 40] con-firms advantages of power control in channels for the antenna performances.

 

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