Printed circuit board

• US 7,791,541 B2
• Filed: 11/23/2007
• Issued: 09/07/2010
• Est. Priority Date: 11/22/2006
• Status: Expired due to Fees

• Current Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Original Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Inventors: Chang, Ki Won, Sung, Jae Suk, Seo, Jeong Sik, Park, Hyun Do
• Primary Examiner(s): Owens; Douglas W
• Assistant Examiner(s): DUONG, DIEU HIEN
• Application Number:
  US11/944,571
• Publication Number:
  US 20080122713A1
• Time in Patent Office: 1,019 Days
• Field of Search: 343/700.MS, 343/702
• US Class Current: 343/700.0MS
• CPC Class Codes: H01Q 1/2283 mounted in or on the surface of a semiconductor substrate as a chip-type antenna or integrated with other components into an IC package
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 9/42 with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
• CPC Class Codes: H05K 1/0243 Printed circuits associated with mounted high frequency components
• CPC Class Codes: H05K 2201/10636 Leadless chip, e.g. chip capacitor or resistor
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

There is provided a printed circuit board comprising: a mounting area of a chip antenna provided on one surface thereof, and a tuning ground pattern formed on a surface opposing the one surface of the printed circuit board to have one end connected to a ground part so as to be used for tuning frequency characteristics of the chip antenna.

Claims

1. A printed circuit board comprising:

a mounting area of a chip antenna provided on one surface thereof; and

a tuning ground pattern formed on an exposed part in a rear surface opposing the one surface of the printed circuit board, the tuning ground pattern having one end connected to a ground part of the printed circuit board so as to be used for tuning frequency characteristics of the chip antenna;

wherein the ground part comprises a first ground part formed on the first surface of the board and a second ground part formed on the second surface to connect to the tuning pattern,

wherein the board further comprises at least one ground part line formed on the first surface to extend from the first ground part to the mounting area of the chip antenna.

2. The printed circuit board of claim 1, wherein the tuning ground pattern has an open-square shape defined along an edge of a portion corresponding to the mounting area of the chip antenna.

3. A printed circuit board comprising:

a board having a first surface providing a mounting area for a chip antenna and a second surface opposing the first surface, the second surface being a rear surface of the board;

a feeding signal line formed on the first surface to extend to the mounting area of the chip antenna; and

a tuning pattern formed on an exposed part of the second surface, providing capacitive coupling to a conductive component of the chip antenna to be mounted thereto, the tuning pattern at least partially removable so that the coupling capacitance between the tuning pattern and the conductive component is changed to tune frequency characteristics of the chip antenna;

wherein tuning pattern is a ground pattern, the board has a ground part and the tuning pattern is connected to the ground part;

wherein the ground part comprises a first ground part formed on the first surface of the board and a second ground part formed on the second surface to connect to the tuning pattern,

wherein the board further comprises at least one ground part line formed on the first surface to extend from the first ground part to the mounting area of the chip antenna.

4. The printed circuit board of claim 3, wherein the tuning pattern is formed on a portion of the second surface corresponding to the mounting area of the chip antenna.

5. The printed circuit board of claim 4, wherein the tuning pattern is a line bent at least once.

6. The printed circuit board of claim 5, wherein the tuning pattern has an open-square shape defined along an edge of a portion corresponding to the mounting area of the chip antenna.