Circularly polarized positioning antenna and wearable equipment

A positioning antenna, circular polarization technology, applied in the direction of antennas, loop antennas, antenna components, etc., can solve the problem of low positioning accuracy of antennas, achieve the effects of reducing multipath interference, good reception, and improving positioning accuracy
CN111490346APending Publication Date: 2020-08-04GUANGDONG XIAOTIANCAI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGDONG XIAOTIANCAI TECH CO LTD
Publication Date
2020-08-04

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Abstract

The invention discloses a circularly polarized positioning antenna and wearable equipment. The circularly polarized positioning antenna comprises a first annular radiator working in a first frequencyband, a first branch knot which is in coupling connection with the first annular radiator and is used for accessing a first feed signal so as to excite the first annular radiator to work in a first radiation mode, and a second branch knot which is in coupling connection with the first annular radiator; a preset distance is formed between the second branch knot and the first branch knot; the secondbranch knot is used for grounding or used for accessing a second feed signal; the two radiation modes have the same amplitude and 90-degree phase difference, namely the annular radiator generates right-handed circular polarization radiation. Therefore, the positioning antenna can better receive navigation satellite signals, and right-handed circular polarization radiation generated by the annularradiator can also filter left-handed circular polarization navigation satellite signals reflected by a high-rise building or the ground to reduce multipath interference, thereby effectively improvingthe positioning precision of the positioning antenna of the wearable equipment.
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Description

technical field

[0001] The present application belongs to the technical field of antennas, and in particular relates to a circular polarization positioning antenna and a wearable device. Background technique

[0002] In the field of smart watches or bracelets, positioning accuracy has always been a pain point that people pay attention to. Traditional positioning antennas for smart watches or bracelets are mostly linearly polarized antennas, but the signals sent by navigation satellites are right-handed circularly polarized signals after passing through the ionosphere, so the positioning antennas of smart watches or bracelets cannot receive all signals from navigation satellites , and the navigation satellite signal is reflected by the ground, tall buildings, trees and other odd times, it will become a left-hand circularly polarized signal, and the multipath interference will seriously affect the positioning effect of the whole machine. Contents of the invention

[0003] T...

Claims

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