Chip-antenna

• US 6,028,568 A
• Filed: 12/09/1998
• Issued: 02/22/2000
• Est. Priority Date: 12/11/1997
• Status: Expired due to Term

• Current Assignee: Murata Manufacturing Co Limited
• Original Assignee: Murata Manufacturing Co Limited
• Inventors: Asakura, Kenji, Oida, Toshifumi, Mandai, Harufumi
• Primary Examiner(s): Wong, Don
• Assistant Examiner(s): PHAN, THO GIA
• Application Number:
  US09/208,223
• Time in Patent Office: 440 Days
• Field of Search: 343/700 MS, 343/702, 343/787, 343/788, 343/872, 343/873, 343/895
• US Class Current: 343/895
• CPC Class Codes: H01Q 1/362 for broadside radiating helical antennas
• CPC Class Codes: H01Q 1/38 formed by a conductive layer on an insulating support patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142

Abstract

The invention provides a chip-antenna, comprising: a base member including a mounting surface and made of at least one of dielectric ceramic and magnetic ceramic; at least two conductors disposed within said base member or on a surface of said base member, at least a portion of said conductors being substantially perpendicular to the mounting surface of said base member; a feeding electrode for applying a voltage to said conductors and disposed on the surface of said base member; a ground electrode disposed at least one on the surface of and within said base member; one of said conductors being served as a first conductor, one end of which is connected to said feeding electrode; the rest of said conductor being served as a second conductor, one end of which are connected to said ground electrode; and the other end of said first conductor and the other end of said second conductor being connected.

Claims

1. A chip-antenna, comprising:

a base member including a mounting surface and made of at least one of dielectric ceramic and magnetic ceramic;

at least two conductors disposed within said base member or on a surface of said base member, at least a portion of said conductors being substantially perpendicular to the mounting surface of said base member;

a feeding electrode for applying a voltage to said conductors and disposed on the surface of said base member;

a ground electrode disposed at least one on the surface of and within said base member;

one of said conductors being served as a first conductor, one end of which is connected to said feeding electrode;

the rest of said conductor being served as a second conductor, one end of which are connected to said ground electrode; and

the other end of said first conductor and the other end of said second conductor being connected.

2. The chip-antenna according to claim 1, wherein a capacitance loading conductor is disposed at least one on the surface of or within said base member, and the other end of said first conductor and the other end of said second conductor are connected via said capacitance loading conductor.

3. The chip-antenna according to claim 2, wherein a gap portion is provided in said base member between said first conductor and second conductor.

4. The chip-antenna according to claim 3, wherein said first and second conductors are wound in substantially spiral shape.

5. The chip-antenna according to claim 3, wherein said first and second conductors are wound in substantially helical shape.

6. The chip-antenna according to claim 2, wherein said first and second conductors are wound in substantially spiral shape.

7. The chip-antenna according to claim 2, wherein said first and second conductors are wound in substantially helical shape.

8. The chip-antenna according to claim 1, wherein a gap portion is provided in said bass member between said first conductor and second conductor.

9. The chip-antenna according to claim 8, wherein said first and second conductors are wound in substantially spiral shape.

10. The chip-antenna according to claim 8, wherein said first and second conductors are wound in substantially helical shape.

11. The chip-antenna according to claim 1, wherein said first and second conductors are wound in substantially spiral shape.

12. The chip-antenna according to claim 1, wherein said first and second conductors are wound in substantially helical shape.