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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
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73! Stanisław SP6MLK
Kłodzko JO80IK06AO
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Przemiennik SR6DKL 439.4750 MHz / 94,8 Hz |
