Printed circuit board including electromagnetic bandgap structure
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsWon Woo Cho, Dek Gin Yang, Myung Gun Chong, Jung Soo Kim, Hyung Ho Kim
Life of this patent
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Abstract
Disclosed is a printed circuit board, which includes an electromagnetic bandgap structure disposed around an antenna so as to prevent noise from being transmitted to the antenna. The printed circuit board includes an antenna, a circuit chip, a plurality of metal layers and a plurality of dielectric layers, a pair of transmission lines for transmitting a signal to the antenna, and an electromagnetic bandgap structure disposed between the antenna and the circuit chip and for preventing an electromagnetic wave from being transmitted from the circuit chip to the antenna.
Claims8
A printed circuit board, comprising:
- an antenna;
- a circuit chip;
- a plurality of metal layers and a plurality of dielectric layers;
- a pair of transmission lines for transmitting a signal to the antenna;
- and
- an electromagnetic bandgap structure disposed between the antenna and the circuit chip in the printed circuit board and for preventing an electromagnetic wave from being transmitted from the circuit chip to the antenna,
- wherein one of the pair of transmission lines is formed in a first metal layer of the plurality of metal layers so as to transmit the signal to the antenna, and the electromagnetic bandgap structure comprises a plurality of metal plates spaced apart from the one of the pair of transmission lines in a direction of the antenna;
- and a plurality of vias for connecting the one of the pair of transmission lines and the metal plates to each other, in which sets of the metal plates and the vias are periodically arranged at a predetermined interval, and
- wherein the other of the pair of transmission lines is formed in a second metal layer of the plurality of metal layers which is spaced apart from the first metal layer in a direction of the antenna, and the metal plates are formed in the second metal layer.
A printed circuit board, comprising:
- an antenna;
- a circuit chip;
- a plurality of metal layers and a plurality of dielectric layers;
- a pair of transmission lines for transmitting a signal to the antenna;
- and
- an electromagnetic bandgap structure disposed between the antenna and the circuit chip in the printed circuit board and for preventing an electromagnetic wave from being transmitted from the circuit chip to the antenna,
- wherein one of the pair of transmission lines is formed in a first metal layer of the plurality of metal layers so as to transmit the signal to the antenna, and the electromagnetic bandgap structure comprises a plurality of metal plates spaced apart from the one of the pair of transmission lines in a direction of the antenna;
- and a plurality of vias for connecting the one of the pair of transmission lines and the metal plates to each other, in which sets of the metal plates and the vias are periodically arranged at a predetermined interval, and
- wherein the other of the pair of transmission lines is formed around the one of the pair of transmission lines on the first metal layer.
Dependencies are inferred from the claim text.