Translated Title

A Compact Eight-arm Spiral Slot Antenna with Cross-coupled Feeding

Translated Abstract

A　compact　cross-coupled　feed　eight-arm　spiral　slot　antenna　for　satellite　navigation　terminal　is　proposed.Eight　slit　spiral　arms　are　used　as　the　radiating　units　of　the　antenna　and　are　etched　on　the　outer　surface　of　a　square　columnar　structure　formed　by　an　FR4　dielectric　substrate.The　feed　network　is　a　cross-dipole　microstrip　line　structure　with　upper　and　lower　mutually　orthogo-nal　three-quarter　circles,which　extends　to　the　outer　surface　to　realize　cross-coupled　feed.The　size　of　the　antenna　is　0.082　λ0×　0.082　λ0×0.130　λ0(λ0　is　the　free-space　wavelength　corresponding　to　the　center　frequency　of　1.561　GHz),and　the　test　results　show　that　the　antenna　has　a-10　dB　impedance　bandwidth　of　1.554　GHz～1.591　GHz　and　a　3　dB　axial　ratio　bandwidth　of　1.535　GHz～1.594　GHz.The　gains　reach　2.56　dBi　and　2.75　dBi　at　the　center　frequency　of　the　Beidou　navigation　satellite　system　Bl　band(1.561　GHz)and　the　center　frequency　of　the　global　positioning　system　L1　band(1.575　GHz),respectively.The　antenna　adopts　a　structure　combining　a　crossed　dipole　arm　coupled　feed　and　an　eight-arm　slit　helix　to　achieve　a　better　circular　polarization　perform-ance　with　broadband　and　compact　size　characteristics.

Translated Keyword

circular polarization
coupling feeding
crossed dipole
eight-arm spiral slot antenna
satellite navigation terminal

Classification

Type

Project Name

Project No.

Access Number

WF:perioarticalwbxb202405012

Language

Chinese

Corresponding s email

Author Info