PURE WIRELESS HEADPHONES USING OPTIMAL MONOPOLE ANTENNAS

Title:

PURE WIRELESS HEADPHONES USING OPTIMAL MONOPOLE ANTENNAS

Document Type and Number:

WIPO Patent Application WO/2017/177351

Kind Code:

A1

Abstract:

The present invention relates to pure wireless headphones using optimal monopole antennas in the technical field of communications. The headphone comprises an in-ear headphone housing and an RF signal generation apparatus provided in the in-ear headphone housing. The top of a bottom housing is a positioning table that matches the shape of a concha cavity. The RF signal generation apparatus consists of an antenna, a main PCB, and a battery. The antenna is used for establishing an RF communication link with an audio source and an antenna of a secondary receiver. A sphere is drawn by using the antenna as a center point and using the outer wall of the in-ear headphone housing closest to the antenna as a radius. The space formed by the sphere is an antenna placing area, the antenna is located in the antenna placing area, and the radius of the sphere is greater than 4 mm. When the distance between an antenna and a human body skin or tissue is greater than 4 mm, the antenna can form optimal coupling with the human body skin, and can generate an optimal RF creeping wave communication link; the antenna gain and efficiency attenuation of an in-ear Bluetooth device are in acceptable ranges; the antenna can also maintain an appropriate RF communication link between a main receiver and a mobile phone.

Inventors:

YEUNG SIU CHUNG (CN)
LAM MAN TAI VINCENT (CN)
CHAN KIT BUN (CN)

Application Number:

PCT/CN2016/000279

Publication Date:

October 19, 2017

Filing Date:

May 25, 2016

Export Citation:

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Assignee:

FUJIKON IND CO LTD (CN)

International Classes:

H04R1/10

Foreign References:

CN204887344U	2015-12-16
CN204090085U	2015-01-07
CN104683902A	2015-06-03
CN203554656U	2014-04-16
US20090231211A1	2009-09-17

Other References: