公开(公告)号：US20170295420A1

公开(公告)日：2017-10-12

申请号：US15446055

申请日：2017-03-01

Applicant: Fujikon Industrial Co.,Ltd

Inventor： Siu Chung YEUNG ,  Man Tai LAM ,  Kit Bun CHAN

IPC: H04R1/10 ,  H01Q9/30 ,  H01Q1/27

CPC classification number: H04R1/1016 ,  H01Q1/243 ,  H01Q1/273 ,  H01Q1/362 ,  H01Q3/02 ,  H01Q9/30 ,  H01Q9/32 ,  H01Q21/29 ,  H04R1/1025 ,  H04R1/1075 ,  H04R5/033 ,  H04R2420/07 ,  H04R2420/09

Abstract: The present invention relates to a pair of pure wireless earphones using optimal monopole antennae in the technical field of communications, comprising in-ear type earphone housings and RF signal generation devices disposed in the in-ear type earphone housings, wherein positioning stages matched with the shape of auricular concha cavities are at the tops of bottom housings; each RF signal generation device consists of an antenna, a main PCB and a battery; each antenna is used for establishing an RF communication link with an audio source and a secondary earpiece; and a ball is drawn with each antenna as a center point and the outer wall of the corresponding in-ear type earphone housing closest to the antenna as a radius to form a space as an antenna holding area in which the antenna is located, and the radius of the ball is greater than 4 mm. When a distance between each antenna and the skin or tissues of a human body is greater than 4 mm, an optimal coupling can be formed therebetween to possibly create an optimal RF creeping wave communication link, the antenna gain and efficiency attenuation of an in-ear type Bluetooth device is within an acceptable range, and the antenna can also maintain a proper RF communication link between a primary earpiece and a mobile phone.

公开(公告)号：US20180077484A1

公开(公告)日：2018-03-15

申请号：US15680178

申请日：2017-08-17

Applicant: Fujikon Industrial Co.,Ltd

Inventor： Siu Chung YEUNG ,  Man Tai LAM

IPC: H04R1/10 ,  H01Q1/48 ,  H01Q1/27 ,  H01Q1/38 ,  H01Q1/36

CPC classification number: H04R1/1091 ,  H01Q1/273 ,  H01Q1/362 ,  H01Q1/38 ,  H01Q1/48 ,  H01Q19/10 ,  H04R1/1016 ,  H04R1/1075 ,  H04R5/033 ,  H04R2201/109 ,  H04R2420/07

Abstract: The present invention relates to a pure wireless headphone with a ground reflector, pertaining to the field of communication technology, including an in-ear headphone shell and an RF signal generating device arranged in the in-ear headphone shell. The RF signal generating device includes an antenna, a main RF PCB, a battery and a charging PCB, wherein the helical antenna is used, the top tail end of which is connected with a laterally extending metal tail line. The RF signal generating device further includes a metal frame and a metal ground ring. The main RF PCB is arranged at the top of the metal frame, the metal ground ring is located under the helical antenna, and a gap is reserved between a bottom coil of the helical antenna and the top of the metal ground ring. The metal ground ring can change a radiation ground current, and adjust the angle of the radiation direction. The radiation direction of the antenna inclines about 15 degrees. A change in radiation direction ensures more stable transmission and reception of the wireless signal between the earbuds and between the main device and the audio frequency source, such that the wireless connection is more stable and reliable.