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Parametric Oscillation - Microwave Frequency Divider



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Microwave Frequency Divider

Gregory explains what is Parametric Modulation and how it can lead to Parametric Oscillation.

Parametric amplifiers and frequency dividers are a class of devices less known by RF enthusiasts.

Modulation of some parameter of the circuit, commonly the active gain or the resonant susceptances, enables amplification by energy pumping or sub-harmonic oscillation.

The phenomenon is used, over a microwave oscillator, to generate injection locking at half the input frequency. In the example, the circuit is excited with 2.6GHz and the output is a clean tone of 1.3GHz.

The circuit utilizes a single transistor and, with the help of microstrip resonators, can be used as a frequency divider for very high frequencies.

Original article at Gusberti Analog:


TYLKO ZAREJESTROWANI I ZALOGOWANI UŻYTKOWNICY WIDZĄ LINKI. DARMOWA REJESTRACJA



Video showing the oscillator topology, from Matjaz Vidmar:


TYLKO ZAREJESTROWANI I ZALOGOWANI UŻYTKOWNICY WIDZĄ LINKI. DARMOWA REJESTRACJA