Antenna structure and wearable equipment with the same

Abstract

The invention discloses an antenna structure and wearable equipment with the same. The antenna structure comprises a metal part, a circuit mainboard, a coupling antenna and a feed antenna; the circuitmainboard is arranged opposite to the metal part, and the gap between the circuit mainboard and the metal part forms a feed space; the coupling antenna is arranged in the feed space, the coupling antenna is coupled with the metal part, and a ground pin of the coupling antenna is electrically connected with earth electricity of the circuit mainboard; the feed antenna is arranged in the feed space,the feed antenna is coupled with the metal part, and a feed source of the feed antenna is connected with a radio frequency port of the circuit mainboard, wherein a beginning antenna branch of the ground pin of the coupling antenna and the beginning antenna branch of the feed source of the feed antenna are placed on the circumference of the metal part, and the circumferential distance between thefeed source of the feed antenna and the ground pin of the coupling antenna is adjusted so as to adjust the frequency band of the right-handed circularly polarized work of the antenna structure to meetthe frequency band of a global navigation satellite positioning system (GNSS).

Description

technical field [0001] The invention relates to the field of electronic communication, in particular to an antenna structure and a wearable device with the antenna structure. Background technique [0002] With the continuous development of electronic communication technology and wearable device technology, wearable devices, especially wearable devices with Global Navigation Satellite System (Global Navigation Satellite System, GNSS) positioning function, are more and more popular. And widely used in various fields. [0003] At present, most wearable devices mainly adopt the following antenna structures: 1) Place the GNSS antenna radiator on a non-metallic shell (such as plastic, ceramic, etc.), and the antenna form is mainly PIFA, IFA, monopole or loop antenna Equilinearly polarized antennas. 2) The metal shell of the wearable device is used as the antenna radiator, and the GNSS linearly polarized antenna is formed by contacting the metal shell with the feeding shrapnel or...

AI Technical Summary

Problems solved by technology

[0004] However, the above antenna structure has the following obvious problems when receiving right-handed circularly polarized electromagnetic waves emitted by GNSS satellites: 1) In theory, using a linearly polarized antenna to receive right-handed circularly polarized electromagnetic waves emitted by GNSS satellites will cause energy loss , the maximum energy loss can reach 3dB, which reduces the receiving performance and affects the positioning speed and positioning accuracy

2) Limited by factors such as the product structure and appearance design of wearable devices, the working frequency band of the right-handed circular polarization of the antenna cannot be flexibly adjusted

3) Restricted by factors such as the product structure and appearance design of wearable devices, the final antenna may be left-handed circularly polarized, which will greatly reduce the performance of receiving GNSS satellite signals, or even fail to receive right-handed circularly polarized electromagnetic waves

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