directivity

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directivity [də‚rek′tiv·əd·ə]

(electronics)

The ability of a logic circuit to ensure that the input signal is not affected by the output signal.

(electromagnetism)

The value of the directive gain of an antenna in the direction of its maximum value.

The ratio of the power measured at the forward-wave sampling terminals of a directional coupler, with only a forward wave present in the transmission line, to the power measured at the same terminals when the direction of the forward wave in the line is reversed; the ratio is usually expressed in decibels.

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No references found			The wave front emitted by the vibrating surface is phase coherent, producing a plane wave with very high directivity and very accurate sound imaging. Now, flat, flexible speakers to revolutionise loudspeakers in public ... by Asian News International I quickly discovered that asking a student open-ended directive questions with a low degree of directivity can actually be beneficial to both the tutee and the session itself. Overcoming the silence: an exploration of the middle ground of ... by Kopec, Lauren / Writing Lab Newsletter Also, for both the horizontal and vertical measurements, the microphone was moved rather than the speaker, which will explain the discrepancy in the low bass measurements, where directivity should not be manifest. NHT classic four loudspeakers by Strauss, Glenn Oliver / Sensible Sound			directional drilling directional filter directional gain directional gyro Directional Gyroscope directional homing directional hydrophone directional lighting directional log directional microphone directional pattern directional phase shifter directional property directional relay directional response pattern directional separation filter Directional Signal directional solidification directional stability directional structure directional well directive directive feed directive gain directive therapy directivity Directivity Factor directivity index Directivity of Acoustic Transmitters and Receivers Directivity Pattern directly congruent figures Directly Executable Test Oriented Language directly heated cathode Directness, Continuity, and Oral Nature of Judicial Examination Directoire style director director circle Director-class switch director-sight system director-type computer director-type fire control directorate Directorate of Public Schools directories Directory Directory Access Protocol directory board directory harvest attack directory listings directory management directory path			Directive Management Information System Directive Management Office Directive on Markets in Financial Instruments Directive on Privacy and Electronic Communications Directive on the Patentability of Computer Implemented Inventions Directive on Traditional Herbal Medicinal Products Directive Principles of State Policy Directive Produits de Construction Directive Relative a la Performance Énergétique des Bâtiments directive splint directive splint directive splint Directive sur les Eaux Résiduaires Urbaines Directive Technology Integrators directive therapy directive therapy Directive to Apprehend Directive-Type Memorandum Directive/Procedure directiveness Directives Directives Directives Directives Directives Documentation Directives et Ordonnances Administratives de la Defense Directives Maintenance Team Directives Management Directives Points of Contact Directives, Publications and Reports Index directivity directivity factor Directivity Fractional Bandwidth directivity index Directivity of Acoustic Transmitters and Receivers Directivity pattern Directivity pattern Directline for Business Directlink Joint Venture directly directly Directly Above the Centre of the Earth directly administered antiretroviral therapy directly affected by the outcome of a controversy directly after Directly Attributable Incremental Cost Directly Authorised Intermediary Firms Directly Binary Coded Current Source directly congruent figures Directly Connected Impervious Area Directly Earthed Appliances Directly Embedded Heating System Directly Executable Representation Directly Executable Test Oriented Language Directly Executable Test Oriented Language directly heated cathode Directly Heated Triode Directly Interpretable Representation

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directivity