Open AccessQUAD-FREQUENCY LINEARLY-POLARIZED AND DUAL-FREQUENCY CIRCULARLY-POLARIZED MICROSTRIP PATCH ANTENNAS WITH CRLH LOADING
Author(s) -
Daniel Segovia-Vargas,
Francisco Javier Herráiz-Martínez,
Eduardo Ugarte-Muñoz,
Luis Enrique García-Muñoz,
Vicente GonzálezPosadas
Publication year - 2013
Publication title -
electromagnetic waves
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 89
eISSN - 1559-8985
pISSN - 1070-4698
DOI - 10.2528/pier12072413
Subject(s) - microstrip , microstrip antenna , orthogonal polarization spectral imaging , physics , patch antenna , optics , circular polarization , polarization (electrochemistry) , computer science , antenna (radio) , telecommunications , laser , chemistry
In this paper, a novel technique to develop multifrequency microstrip patch antennas with polarization diversity or circular polarization is presented. The proposed approach consists of exciting modes with orthogonal polarizations in microstrip patches partially fllled with Composite Right/Left-Handed (CRLH) cells. Two difierent kinds of quad-frequency single-layer patch antennas are proposed. The flrst one has two orthogonal ports with high isolation between them. The second kind of quad-frequency patch antennas consists of exciting the four modes with two orthogonal polarizations through only one port. Finally, the proposed approach is used to develop dual-frequency circularly-polarized (CP) patch antennas by exciting the modes with orthogonal polarizations in quadrature phase. Prototypes of all the designs are manufactured and measured, showing good performance.
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