Circuit with flat electromagnetic band gap resonance structure

摘要

Circuit with flat electromagnetic band gap resonance structure, includes a plurality of flat units formed at a conductor layer; each flat unit spirally revolves inward from a first end to an internal point following a rotation direction, and spirally revolves outward from the internal point to a second end following an opposite rotation direction. Each flat unit is connected to a ground plane by a conductive stand (e.g., a via) at a connection point, for suppressing noise resonances at certain frequencies, and the frequencies are related to a stub length of each flat unit, and the stub length is related to a route length from the connection point to an end.

主权项

1. A circuit with electromagnetic band gap resonance structure, comprising:
a first conductor layer; a second conductor layer comprising a predetermined quantity of flat units; each of the flat units spirally revolving inward from an end to an internal point, and spirally revolving outward from the internal point to an other end; and a predetermined number of conductive stands, each of the conductive stands associated with one of the predetermined quantity of flat units, for connecting the associated flat unit to the first conductor layer; wherein the predetermined quantity of flat units are arranged to suppress a response of at least a frequency, each said frequency associates with a stub length of each of the flat units; each of the flat units are connected to the associated conductive stand at a connection point, and the stub length of each of the flat units associated with a route length from the connection point to one of the two ends of each of the flat units.