injection locking


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injection locking

[in′jek·shən ¦läk·iŋ]
(electronics)
The capture or synchronization of a free-running oscillator by a weak injected signal at a frequency close to the natural oscillator frequency or to one of its subharmonics; used for frequency stabilization in IMPATT or magnetron microwave oscillators, gas-laser oscillators, and many other types of oscillators.
References in periodicals archive ?
The rto is needed to characterize the devices the group makes for injection locking experiments, measurement of relaxation oscillations of lasers, and narrow line width measurements of lasers.
Local stability of nonlinear circuits in large-signal regime, nonlinear analysis, stability and bifurcations, and injection locking are explained.
Injection locking may be obtained via mutual coupling, external feedback or an external source.
The notch array can be used as a transmitter with an external injection locking source for mechanical beam steering.
Clearly, a nonlinear mechanism is required to generate harmonics of the reference signal so that efficient injection locking of oscillators at 8 GHz, 12 GHz and 24 GHz can be maintained.
Locked oscillator frequency dividers operate by subharmonic injection locking.
This also helps to isolate the final output, making it less sensitive to output mismatching, and eliminating injection locking of the VCO.
In this system, the injection locking signals are generated by the stable master oscillator (STAMO) and without filtering, injected into the RF coherent oscillator (Coho) and amplifier chain, respectively.