Some properties of an injection-locked pulsed magnetron in a coherent-echo-detection system

Abstract

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Phase Locking of Relativistic Magnetrons

“…! " 3 In these experiments the power of the driving master oscillator was much smaller than that of the driven oscillator. In the experiments reported here, the powers are of the same order.…”

“…Having demonstrated phase locking at a power level of 3 GW, 3 orders of magnitude higher than previous magnetron work, 3 we are currently investigating geometry effects for groups of oscillators in the configurations. Series-connected oscillators, such as that shown in Fig.…”

Observations of Phase Locking in a Single-Cavity Gyrotron Oscillator

“…T HE SYNCHRONIZATION, or locking, of nonlinear l oscillators was reported as early as the 17th century when Huygens observed the phenomenon in clocks placed on a common wall [1]. More recently, it has been reported in microwave tubes, particularly in klystrons and magnetrons [2], [3]. Phase locking, i.e., the locking of the phase, and hence the frequency, of one oscillator with another, is useful whenever mutual coherence is required.…”

“…In a somewhat more straightforward manner, Adler [8] has modeled a general nonlinear oscillator circuit with lumped elements, determining that the maximum initial detuning between the free-running oscillator frequency fo and the input signal frequency is f fQ (Po) (1) where Pi is the input power, P0 is the output power of the free-running oscillator, and Q is the quality factor of the cavity in the presence of the electron beam. This rather general formula has been applied to magnetrons with some success [2]. For a gyrotron with a typical Q of 500, an Manuscript received April 9, 1985; revised July 16, 1985.…”