Chip antenna

Patent metadata

Field	Value
Publication number	US-10079426-B2
Application number	US-201515317262-A
Country	US
Kind code	B2
Filing date	May 18, 2015
Priority date	Jun 13, 2014
Publication date	Sep 18, 2018
Grant date	Sep 18, 2018

Abstract

Provided is a chip antenna (1), including: an antenna pattern (3); and a base body (2), which has a hexahedral shape, the antenna pattern (3) including: an antenna part (31), which is held on an upper surface of the base body (2); and a plurality of terminal parts (32), which are held on a lower surface of the base body (2), each of the plurality of terminal parts (32) being soldered to a circuit board (10), in which the antenna pattern (13) further includes a band-shaped protruding part (34), which extends in a long-side direction of the antenna part (31), and is embedded in the base body (2), and the band-shaped protruding part (34) is provided at least along a range of each of two long sides of the antenna part (31) excluding a range in which the plurality of terminal parts (32) are arranged.

First claim

The invention claimed is:

1. A chip antenna, comprising:
an antenna pattern formed through bending a conductive plate into a three-dimensional shape; and
a base body, which is formed through injection molding a resin with the antenna pattern being inserted, and has a hexahedral shape holding the antenna pattern on a surface thereof,
the antenna pattern comprising:
an antenna part, which is located on an upper surface of the base body, and has a substantially rectangular shape in which two long sides are arranged along a longitudinal direction of the base body;
a plurality of terminal parts, which are located on a lower surface of the base body, and are arranged along the two long sides of the antenna part, each of the plurality of terminal parts being soldered to a circuit board; and
a band-shaped protruding part, which extends in a long-side direction of the antenna part, and is embedded in the base body, the band-shaped protruding part being provided at least along a range of each of the two long sides of the antenna part excluding a range in which the plurality of terminal parts are arranged,

wherein the base body has a through hole, which is formed at a location immediately below the antenna part, extends in a thickness direction of the antenna part, and is opened to the upper surface of the base body and a surface of the base body opposite to the upper surface of the base body, the through hole having an inner wall surface, which is a molded surface formed using a mold of the base body.

2. The chip antenna according to claim 1 , wherein the band-shaped protruding part is further provided between the two long sides of the antenna part.

3. The chip antenna according to claim 1 , wherein the band-shaped protruding part forms an angle that is set to an obtuse angle with respect to the antenna part.

4. The chip antenna according to claim 1 , wherein a part of the antenna pattern at least at a contact surface with the base body has a surface roughness Ra of 1.6 or more.

5. The chip antenna according to claim 1 , wherein the base body is formed through injection molding a resin having a permittivity of 4 or more.

6. The chip antenna according to claim 1 , wherein
the base body has an opening at least in the lower surface, and
the opening is defined by a pair of side walls provided upright along two long sides of a rectangular plate-shaped top wall which is substantially parallel to the circuit board, and a pair of end walls provided upright along two short sides of the top wall.

7. The chip antenna according to claim 1 , wherein the base body has a solid hexahedral shape.

Assignees

• Ntn Toyo Bearing Co Ltd

Inventors

• Sonozaki Tomokazu
• Noda Hiroyuki
• Mori Natsuhiko

Classifications

• H01Q1/38

  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)} · CPC title

• H01Q1/2283 Primary

  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 title

• H01Q1/36

  Structural form of radiating elements, e.g. cone, spiral, umbrella; {Particular materials used therewith}(H01Q1/08, H01Q1/14 take precedence) · CPC title

• H01Q1/40

  Radiating elements coated with or embedded in protective material · CPC title