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A waveguide component that uses a ferrite section to give zero phase shift for one direction of propagation and 180° phase shift for the other direction; in other words, it causes a reversal of signal polarity for one direction of propagation but not for the other direction. Also known as microwave gyrator.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



a directional phase shifter, a microwave device. This device creates a half-wave phase change of electromagnetic waves propagating in opposite directions. Gyrators are used as a component in various microwave devices, such as gates, modulators, circulators, and switches. The operating principle of gyrators is based on the irreversible properties of magnetized ferrite; these properties cause rotations of polarization plane, phase shift, and so on. The simplest kind of gyrator consists of a circular radio waveguide that contains an appropriately dimensioned, magnetized ferrite rod (magnetized in a magnetic field of a previously determined intensity). A circular waveguide is coupled to a rectangular waveguide by matching transitions.


Gurevich, A. G. Ferrity na sverkhvysokikh chastotakh. Moscow, 1960.
Lax, B., and K. Batton. Sverkhvysokochastotnye ferrity i ferrimagnetiki. Moscow, 1965. (Translated from English.)


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
(10) The Gyrator was designed as a method to relieve "brain congestion." (10) And the tranquilizer chair provided an approach directed at reducing the flow of stimulating blood to the brain.
Ailing, "An optical color image watermarking scheme by using compressive sensing with human visual characteristics in gyrator domain," Optics and Lasers in Engineering, vol.
Calvo, "Gyrator transform: properties and applications," Optics Express, vol.
In order to construct devices such as circulators [1-6,9,11], gyrators [7] or isolators [8,10] the FCL section has to be cascaded with reciprocal section providing input signals to the FCL which are either in phase or out of phase.
A special case of the quadripole is the gyrator, defined as an anti-reciprocal passive linear quadripole:
The chosen way of implementation of this circuit simulator is based initially on nodal formulation and gyrator transforms, leading to a very general and powerful architecture.
Controlled vibration, supplied by the company's patented gyrator, fluidizes material as it enters the mixing trough of the blender.
Liu et al., "Image encryption by using gyrator transform and Arnold transform," Journal of Electronic Imaging, vol.
Using a negative impedance converter, the resistance of the coil can be compensated or the circuit can be converted to a Non-Foster circuit which has more bandwidth and a gyrator would allow to replace the capacitor by a second inductor (which would also couple to the magnetic field) [22-24].
Adjacent-channel rejection is provided using tunable on-chip gyrator filters.