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Compact circularly polarized GNSS antenna with broad beam and stable phase center based on fragment‐type crossed dipoles
Author(s) -
Zhang Wenjuan,
Zhang Hongliang,
Wu Xiaopo,
Wang Gang
Publication year - 2021
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.32881
Subject(s) - phase center , beamwidth , gnss applications , glonass , antenna measurement , coaxial antenna , turnstile antenna , physics , optics , dipole antenna , antenna (radio) , computer science , global positioning system , telecommunications
This study is dedicated to the comprehensive design of a compact circularly polarized microstrip antenna and the integration of essential properties of stable phase center, broad bandwidth, and wide beamwidth into that antenna. Such a compact antenna in electronically low size was firstly achieved by technically using paired fragment‐type crossed dipoles and applying multi‐objective evolutionary algorithm with enhanced genetic operators. The design method has proved a triumphant one in simulations and experimental tests that it guarantees the proposed antenna to hold the capability of operating in broad band covering the popular GNSS, such as the GPS, BeiDou, Galileo, and GLONASS. The verified antenna has also demonstrated a great flexibility to design requirement that it allows the stable phase center beneath 3.5° over the whole GNSS bands, relatively wide beamwidth more than 130°, and much compact structure.