# US 10,374,307 B2 · High-frequency antenna element and high-frequency antenna module

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- Number: US 10,374,307 B2
- Document ID: US10374307B2
- Status: Granted
- Kind: B2
- Application number: 15/468,623
- Filed: 2017-03-24
- Published: 2017-10-05
- Granted: 2019-08-06
- Earliest claimed: 2016-03-31
- Assignees: The University of Tokyo; Tokyo Ohka Kogyo Co., Ltd.
- Applicants: The University of Tokyo; Tokyo Ohka Kogyo Co., Ltd.
- Inventors: Shin-ichi Ohkoshi; Asuka Namai; Marie Yoshikiyo; Takashi Ono
- Web page: https://patentgrep.com/patent/US10374307B2

## CPC

- H01Q 1/526: {Electromagnetic shields}
- 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)}
- H01Q 1/405: {Radome integrated radiating elements}
- H01Q 3/30: varying the {relative} phase {between the radiating elements of an array (H01Q3/2605, H01Q3/2658, H01Q3/2682, H01Q3/44 take precedence)}
- H01Q 9/0407: {Substantially flat resonant element parallel to ground plane, e.g. patch antenna (dipole H01Q9/285; monopole H01Q9/40)}
- 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}
- H01Q 1/36: Structural form of radiating elements, e.g. cone, spiral, umbrella; {Particular materials used therewith}(H01Q1/08, H01Q1/14 take precedence)
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)

## 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.

## Claims

### Claim 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.

### Claim 2 (depends on 1)

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.

### Claim 3 (depends on 1)

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-Fe2O3 crystal and a crystal having a crystalline structure and a space group identical to a crystalline structure and a space group of the ε-Fe2O3 crystal, in which a part of Fe sites in the ε-Fe2O3 crystal is substituted by an element M other than Fe, and is represented by a formula ε-MxFe2-xO3, wherein x is at least 0 and less than 2; and
a relative permittivity of the coating layer is 6.5 to 65.

### Claim 4 (depends on 1)

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

### Claim 5 (depends on 1)

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