Descriptions for H03H and notes/indexes are displayed on this screen.
| H03H
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IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS (measuring, testing G01R; arrangements for producing a reverberation or echo sound G10K 15/08; impedance networks or resonators consisting of distributed impedances, e.g. of the waveguide type, H01P; control of amplification, e.g. bandwidth control of amplifiers, H03G; tuning resonant circuits, e.g. tuning coupled resonant circuits, H03J; networks for modifying the frequency characteristics of communication systems H04B)
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Note(s)
This subclass covers:[3,7]networks comprising lumped impedance elements;networks comprising distributed impedance elements together with lumped impedance elements;networks comprising electromechanical or electro-acoustic elements;networks simulating reactances and comprising discharge tubes or semiconductor devices;constructions of electromechanical resonators. In this subclass, the following expression is used with the meaning indicated:"passive elements" means resistors, capacitors, inductors, mutual inductors, or diodes Attention is drawn to the Notes following the titles of class B81 and subclass B81B relating to "microstructural devices" and "microstructural systems".In this subclass, main groups with a higher number take precedence
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Subclass indexes
NETWORKS | Adaptive | 21/00 | Using digital techniques | 17/00 | Transversal filters | 15/00 | Using passive elements only: | one port; multi-port | 5/00; 7/00 | Using electromechanical or electro-acoustical elements | 9/00 | Using active elements | 11/00 | Using time varying elements | 19/00 | Using other elements or techniques | 2/00 | DETAILS | 1/00 | MANUFACTURE | 3/00 |
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