Antenna

Patent metadata

Field	Value
Publication number	US-10290928-B2
Application number	US-201515504702-A
Country	US
Kind code	B2
Filing date	Jul 3, 2015
Priority date	Aug 26, 2014
Publication date	May 14, 2019
Grant date	May 14, 2019

Abstract

An antenna includes: a connection device for connection with an electronic device; a cable connected to the connection device; and a high-frequency cutoff unit that is formed of a material having high impedance in a high frequency and disposed at a given position of the cable. The cable with a length defined by the high-frequency cutoff unit functions as an antenna.

First claim

The invention claimed is:

1. An antenna comprising:
a connection device for connection with an electronic device;
a cable connected to the connection device; and
a high-frequency cutoff unit that is formed of a material having high impedance at a high frequency and is spaced from the connection device along the cable,
wherein the cable with a length defined by the high-frequency cutoff unit functions as an antenna.

2. The antenna according to claim 1 ,
wherein the length defined by the high-frequency cutoff unit is a length of nearly ¼ of a wavelength to be received.

3. The antenna according to claim 2 ,
wherein a signal at a higher frequency than a frequency of a signal to be received can also be received by high-frequency excitation.

4. The antenna according to claim 1 ,
wherein the material having high impedance in a high frequency is a magnetic material such as ferrite.

5. The antenna according to claim 1 ,
wherein a cylindrical or ring-shaped core is formed of the material having high impedance in a high frequency, and
the cable penetrates through a center hole of the core or is wound a given number of times to form the high-frequency cutoff unit.

6. The antenna according to claim 1 ,
wherein the cable is a cable with a shield including a shield line and a signal transmission line in the shield line, the shield line functioning as an antenna, and
the high-frequency cutoff unit is disposed for the signal line at an opposite end to the connection device.

7. The antenna according to claim 6 ,
wherein another connection device is provided at the opposite end of the cable to the connection device, and
the high-frequency cutoff unit is provided for the signal line at a connection position between the cable and the other connection device.

8. The antenna according to claim 7 ,
wherein a length of the shield line is a length of nearly 1/4 of a wavelength to be received.

9. The antenna according to claim 8 ,
wherein a signal at a higher frequency than a frequency of a signal to be received can also be received by high-frequency excitation.

10. The antenna according to claim 6 ,
wherein the signal transmission line is an audio signal transmission line, and an earphone is connected to the signal transmission line.

Assignees

• Sony Semiconductor Solutions Corp

Inventors

• Yoshino Yoshitaka
• Makishima Makoto
• Tsuboi Satoru
• MURAKAMI Tomomichi

Classifications

• H01Q1/245 Primary

  with means for shaping the antenna pattern, e.g. in order to protect user against rf exposure · CPC title

• H01Q1/46 Primary

  Electric supply lines or communication lines · CPC title

• H01Q9/02

  Non-resonant antennas · CPC title

• H01Q1/526

  Electromagnetic shields · CPC title

• H01Q7/08

  Ferrite rod or like elongated core · CPC title