Источник двухчастотного перестраиваемого СВЧ-излучения на основе гироклистрона в режиме биений с входным сигналом

A new scheme of a two-frequency radiation source based on a gyroklystron amplifier operating in the self-excitation mode and controlled by the input signal is proposed. Using a powerful 3-mm gyroklystron as an example, it is shown that, when operating in the beat mode (i.e., outside the synchronization band), by varying the frequency and power level of the input signal, it is possible to implement continuous independent tuning of the distance between spectral components in the 10-150 MHz range. and the ratio of their amplitudes in the range from -10 to 0 dB.

Comlexed RF-module with synchronized generators M-type

On the basis of previously carried out works [2, 3], it has been established that the most effective way for coherent summation of the power of two generators with a waveguide output is to use a waveguide 3-decibel bridge as an adder. In this case, the output power of the synchronized device within the synchronization band can reach 95% of the total power of the generators. Purpose of the work is to describe the installation «microwave module», which uses the method of coherent summation of the powers of two magnetrons in the power adder. Mutual phased synchronization of two magnetrons is provided by a phase shifter, matching is provided by a short-circuiting piston. The summed signal is sent to the output (antenna) path of the radar. The microwave generator module is designed to generate probing pulse signals in a multifunctional receiving-transmitting radar measuring complex. For the first time in Russia, JSC «Pluton» has created a «microwave module» installation in the 2-centimeter wavelength range, which makes it possible to use the principle of coherent addition of the powers of two commercially available magnetrons. The installation cost and manufacturing time are many times less than those for a newly developed magnetron with the parameters presented in this article.

SYNCHRONIZATION OF FRACTIONAL VAN-DER-POL OSCILLATOR

A model of self-oscillating system with a differential equation of motion of fractional order under the action of external harmonic signal is proposed. Solutions of equation of motion which correspond to the regime of steady-state synchronized oscillations and the regime of beats near the synchronization band are obtained in the quasiharmonic approximation. The amplitude frequency and phase-frequency characteristics of synchronization of fractional Van-der-Pol oscillator are analyzed. An analogy between the generator with a fractional feedback circuit and the generator with delayed feedback is established.