High-frequency antenna element and high-frequency antenna module

Patent metadata

Field	Value
Publication number	US-10374307-B2
Application number	US-201715468623-A
Country	US
Kind code	B2
Filing date	Mar 24, 2017
Priority date	Mar 31, 2016
Publication date	Aug 6, 2019
Grant date	Aug 6, 2019

Abstract

A high-frequency antenna element that is easily downsized even when an electromagnetic wave absorber is used, and is capable of protecting a receiving antenna unit by covering the receiving antenna unit, and provides a high-frequency antenna module including the high-frequency antenna element. The high-frequency antenna element includes a substrate, a dielectric layer, a receiving antenna unit, and a coating layer, in which the dielectric layer is laminated on the substrate, the receiving antenna unit is mounted on the dielectric layer, the coating layer covers a surface of the dielectric layer in a portion in which the receiving antenna unit is not mounted while the coating layer is in contact with entire side surfaces of the receiving antenna unit, and the coating layer covers at least a part of an upper surface of the receiving antenna unit.

First claim

What is claimed is:

1. A high-frequency antenna element comprising a substrate, a dielectric layer, a receiving antenna unit, and a coating layer, wherein:
the dielectric layer is laminated on the substrate;
the receiving antenna unit is mounted on the dielectric layer;
the coating layer covers a surface of the dielectric layer in a portion in which the receiving antenna unit is not mounted while the coating layer is in contact with entire side surfaces of the receiving antenna unit, and the coating layer covers at least a part of an upper surface of the receiving antenna unit; and the coating layer is a film capable of imparting electromagnetic wave absorbing properties to the high-frequency antenna element.

2. The high-frequency antenna element according to claim 1 , wherein a coating layer covers an entire surface of the upper surface of the receiving antenna unit.

3. The high-frequency antenna element according to claim 1 , wherein the coating layer comprises epsilon-type iron oxide, wherein the epsilon-type iron oxide is at least one selected from an ε-Fe 2 O 3 crystal and a crystal having a crystalline structure and a space group identical to a crystalline structure and a space group of the ε-Fe 2 O 3 crystal, in which a part of Fe sites in the ε-Fe 2 O 3 crystal is substituted by an element M other than Fe, and is represented by a formula ε-M x Fe 2-x O 3 , wherein x is at least 0 and less than 2; and
a relative permittivity of the coating layer is 6.5 to 65.

4. The high-frequency antenna element according to claim 1 , wherein the coating layer includes a carbon nanotube.

5. A high-frequency antenna module comprising a module assembly comprising the high-frequency antenna element according to claim 1 .

Assignees

• Univ Tokyo
• Tokyo Ohka Kogyo Co Ltd

Inventors

• Ohkoshi Shin-Ichi
• Namai Asuka
• YOSHIKIYO Marie
• Ono Takashi

Classifications

• H01Q1/405

  Radome integrated radiating elements · CPC title

• H01Q1/2283

  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 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

• H01Q1/38 Primary

  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

• H01Q1/526 Primary

  Electromagnetic shields · CPC title